EP0521520B1 - High-pressure cleaning device - Google Patents

High-pressure cleaning device Download PDF

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Publication number
EP0521520B1
EP0521520B1 EP92111325A EP92111325A EP0521520B1 EP 0521520 B1 EP0521520 B1 EP 0521520B1 EP 92111325 A EP92111325 A EP 92111325A EP 92111325 A EP92111325 A EP 92111325A EP 0521520 B1 EP0521520 B1 EP 0521520B1
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EP
European Patent Office
Prior art keywords
pressure
cleaning device
pressure cleaning
lance
cleaning lance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92111325A
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German (de)
French (fr)
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EP0521520A1 (en
Inventor
Josef Kränzle
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B08B3/028—Spray guns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0426—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with a pump attached to the spray gun or discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
    • B05B9/0861—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0211—Case coverings

Definitions

  • the invention relates to a high-pressure cleaner with the generic features of claim 1.
  • Such a high-pressure cleaning device with a drive motor and a high-pressure pump and a cleaning lance are known from DE 90 13 677 U1, which are mechanically firmly combined to form a compact unit body that can be handled as a unit.
  • the cleaning lance consists of an actuator, a jet pipe and a jet nozzle.
  • a similar high-pressure cleaner is known from EP 0 312 862 A1, the pump housing of a high-pressure pump with an electric motor arranged thereon being rigidly connected to a pistol grip projecting downwards.
  • the pump housing is also equipped with a valve housing and an attached spray tube and a jet nozzle.
  • these known high-pressure cleaners still have a considerable weight of approximately 10 to 15 kg, provided that no concessions are made to the robustness of the drives and the high-pressure pump. Due to the combination into a compact device body, the high-pressure cleaner can be handled as a unit, and in particular the high-pressure connecting line between the high-pressure pump and the cleaning lance can be dispensed with. Due to the high weight, the handling of the high-pressure cleaner is difficult and tiring, especially during longer cleaning work, since it has to be carried in an ergonomically unfavorable position. This applies in particular to powerful electric drives or internal combustion engines as drives for the mobile use of high-pressure cleaners, since this increases the weight of the high-pressure cleaners. However, such high-pressure cleaners with more than 20 kg can hardly be worn for a long time.
  • the object of the invention is to create a high-pressure cleaner which is easier to handle and enables a more comfortable working posture.
  • the cleaning lance can be coupled or uncoupled to and from the device body of the high-pressure cleaner, there are basically two advantageous operating modes of the high-pressure cleaner.
  • the entire high-pressure cleaner can be used as a portable unit for shorter cleaning work, it being possible to dispense with a separate high-pressure connection hose.
  • the cleaning lance can be uncoupled from the device body in a particularly advantageous manner for work in confined conditions or for longer cleaning work in which carrying the entire unit would be too difficult, so that only this has to be carried while the rest of the device body serves as a standard free-standing device for a high-pressure cleaner.
  • This mode of operation is particularly suitable for working in an unfavorable posture, e.g. B.
  • the device body in a stooped position or, for example, when cleaning facades on scaffolding, the device body can remain as a standing device on the floor while the cleaning lance is uncoupled and thus only this must be carried up on the scaffolding.
  • a standard high-pressure hose serves as the hydraulic connection between the cleaning lance and the high-pressure pump.
  • This positive connection is, for example, as a quick-release screw connection, for. B. with knurled screws so that a simple coupling or uncoupling of the cleaning lance from the device body is possible.
  • a snap connection with interlocking catches can also be provided or the connection can be designed as a plug-in coupling.
  • plug-in couplings in particular for connecting the outlet connection of the high-pressure pump to the inlet connection of the cleaning lance, are made, for example, of fluid lines, for. B. known in the hydraulic connection of agricultural machinery.
  • the outlet connection is in direct connection with the inlet connection of the cleaning lance, i.e. connected without the interposition of a high pressure hose.
  • the handle part is coupled in an advantageous embodiment above the high-pressure pump, so that the handle part closes on the one hand with the upper edge of the drive motor and on the other hand with the front edge of the high-pressure pump, thus resulting in an approximately cuboid, compact design of the portable unit .
  • a shoulder strap is provided on the high-pressure cleaner for carrying, since this causes the weight of the clutched together Pressure washer, especially with unfavorable postures, can be reduced considerably.
  • one end of the shoulder strap is coupled to the device body and the other end to the cleaning lance, so that the center of gravity of the entire portable unit is approximately above the high-pressure pump.
  • a second handle is provided on the cleaning lance to better guide the portable unit toward the jet nozzle.
  • the cleaning lance is coupled together, it is preferably pivotable laterally with the device body, so that a more comfortable working posture is achieved.
  • a high pressure cleaner 1 is shown schematically in side view.
  • the high-pressure cleaner consists on the one hand of a device body 2, which has a drive motor 3 and a high-pressure pump 4 flanged onto it.
  • the drive motor 3 is generally an electric motor, but can also be an internal combustion engine or a battery-operated electric motor.
  • the high-pressure pump 4 is a multi-axial piston pump driven by a swash plate, at the pump head, here the left end, an outlet connection 5 is provided, with which a cleaning lance 6 is connected via a high-pressure hose or directly.
  • the cleaning lance 6 consists of a handle part 7 with an actuating element 8 with which the spraying process of the cleaning liquid escaping under high pressure is controlled via a jet pipe 9 and a jet nozzle 10.
  • the cleaning liquid generally water, is drawn in by the high-pressure pump 4 via a suction line (not shown).
  • the cleaning lance 6 can be coupled with its handle part 7 to the device body 2 to form a portable unit 11, as indicated by the curly bracket, by means of a positive connection 12, as is shown here shortly before the coupling movement is completed.
  • the positive connection 12 can be designed as a screw connection 13 (cf. also FIG. 2) or, as is preferred here, as a latching connection 14, a latching projection 15 being provided here at the rear end of the handle part 7, while a complementary one is provided on the housing body 2 in a housing recess trained recess 16 is provided.
  • the locking projection 15 of the handle part 7 is inserted into the locking recess 16 and then the handle part 7 z. B. screwed to the high pressure pump 4 by means of a knurled nut.
  • a spring-loaded locking device can also be provided.
  • the cleaning lance 6 is locked at the outlet connection 5 of the high-pressure pump 4 by screwing a union nut 17 onto an inlet connection 18 on the cleaning lance 6 becomes.
  • the union nut 17 also assumes a coupling or locking function, so that due to the latching connection 14 and the screw connection 13 in the form of the union nut 17, a detachable, yet stable connection of the cleaning lance 6 on the device body 2 to one robust and portable unit 11 is achieved.
  • housing recesses or pockets are provided in the device body 2 on the connection surface to the handle part 7, so that the cleaning lance 7 together with the screw connection 13 and / or latching connection 14 on the device body 2 is securely anchored.
  • the handle part 7 of the cleaning lance 6 is preferably inserted above the high-pressure pump 4 approximately flush with the top and front edges of the device body 2.
  • coupling and locking devices can also be provided on the side or on the rear of the device body (here on the right of the drive motor 3), so that the handle part 7 can be coupled on the right side of the high-pressure cleaner 1 here in the latter case. This would result in a reduction in the overall length of the high-pressure cleaner 1.
  • a permanently installed connecting line could serve to connect the outlet connection 5 with the inlet connection 18 of the cleaning lance 6 which opens into the handle part 7.
  • a shoulder strap 19 is provided on the high-pressure cleaner 1 and is fastened with fastening points 20, 21.
  • the unit 11 can be carried over a long period of time without great effort.
  • one end of the shoulder strap 19 is arranged on the device body 2, while the other end on the cleaning lance 6 is arranged as far forward as possible, so that the middle of the shoulder strap 19 comes to lie approximately above the high-pressure pump 4.
  • the supporting point is located approximately in the center of gravity of the high-pressure cleaner 1.
  • a further handle 22 can be provided on the cleaning lance 6, by means of which the guidance of the jet pipe 9 and the jet nozzle 10 is improved during cleaning. For more convenient handling, this handle 22 can be folded up from a vertical position shown here to a lateral position, as is indicated by a dash-dotted arrow.
  • FIG. 2 shows a modified embodiment of the high-pressure cleaner 1, with the handle part 7 of the cleaning lance 6 being able to be coupled to the device body 2 in relation to the coupling in the area above the high-pressure pump 4, approximately via the drive motor 3.
  • the handle part 7 is provided on its top with a concave recess 23, so that the cleaning lance 6 can be inserted under a handle 24, which is provided on its underside with a corresponding curvature, up to the upright part of the handle 24 and then with the Knurled screw 13 shown here can be locked to a threaded bore 13a shown in partial section.
  • a dashed locking connection 14 'in the form of a spring-loaded locking bolt In the fully coupled position, the handle 24 and the rear part of the handle part 7 for actuating the valve 8 can be gripped by one hand.
  • the outlet connection 5 of the high-pressure pump 4 is connected to the inlet connection 18 of the cleaning lance 6 via a schematically illustrated high-pressure hose 26, the high-pressure hose 26 being connected to a holder 25 at the front end of the high-pressure pump 4 whose pump head is wound up.
  • the high-pressure cleaner 1 can be operated as a portable unit 11, one hand operating the actuating element 8 and the other hand encompassing the cleaning lance 6.
  • the cleaning lance 6 can be removed from the device body 2 by loosening the connection 12, here the knurled screw 13, and the high-pressure hose 26 can be unwound, as is indicated in broken lines.
  • the device body 2 thus serves as a standing device, while only the cleaning lance 6 has to be carried, so that even narrow cleaning points such.
  • B. the underbody of a motor vehicle is easily accessible.
  • connection for the cleaning liquid, the high-pressure hose 26, does not have to be released. If use as a portable unit 11 with a coupled cleaning lance 6 is then desired again, for example in order to directly regulate the pressure at the high-pressure pump 4 during the spraying process, only the high-pressure hose 26 is wound up on the holder 25 and the positive connection 12 by inserting the Handle part 7 under the handle 24 and locking by means of the knurled screw 13 restored. It should be noted that the shoulder strap 19 shown in FIG. 1 can also be provided in this embodiment.

Abstract

For improved handling capability and universal application, the invention proposes a high-pressure cleaning device (1) in which the handle part (7) of the cleaning lance (6) can be coupled to the unit body (2) with drive motor (3) and high-pressure pump (4) by means of a positive-locking connection (12) to form a portable unit (11). Preferably a shoulder strap (19) for carrying the unit (11) is provided. With this design, the high-pressure cleaning device (1) can be operated with coupled cleaning lance (6), and also the cleaning lance (6) can be quickly and simply removed by releasing the connection (12). <IMAGE>

Description

Die Erfindung betrifft einen Hochdruckreiniger mit den oberbegrifflichen Merkmalen des Patentanspruches 1.The invention relates to a high-pressure cleaner with the generic features of claim 1.

Aus der DE 90 13 677 U1 ist eine derartige Hochdruckreinigungseinrichtung mit einem Antriebsmotor und einer Hochdruckpumpe, sowie einer Reinigungslanze bekannt, die mechanisch fest zu einem als Einheit handhabbaren, kompakten Gerätekörper zusammengefaßt sind. Die Reinigungslanze besteht hierbei aus einem Betätigungselement, einem Strahlrohr und einer Strahldüse.Such a high-pressure cleaning device with a drive motor and a high-pressure pump and a cleaning lance are known from DE 90 13 677 U1, which are mechanically firmly combined to form a compact unit body that can be handled as a unit. The cleaning lance consists of an actuator, a jet pipe and a jet nozzle.

Ein ähnlicher Hochdruckreiniger ist aus der EP 0 312 862 A1 bekannt, wobei das Pumpengehäuse einer Hochdruckpumpe mit daran angeordnetem Elektromotor mit einem nach unten abstehenden Pistolengriff starr verbunden ist. Das Pumpengehäuse ist weiterhin mit einem Ventilgehäuse und einem daran fest angebrachten Spritzrohr und einer Strahldüse ausgestattet.A similar high-pressure cleaner is known from EP 0 312 862 A1, the pump housing of a high-pressure pump with an electric motor arranged thereon being rigidly connected to a pistol grip projecting downwards. The pump housing is also equipped with a valve housing and an attached spray tube and a jet nozzle.

Diese bekannten Hochdruckreiniger weisen trotz Leichtbauweise noch ein erhebliches Gewicht von etwa 10 bis 15 kg auf, sofern keine Zugeständnisse an die Robustheit der Antriebe und der Hochdruckpumpe gemacht werden. Durch die Zusammenfassung zu einem kompakten Gerätekörper ist der Hochdruckreiniger als eine Einheit handhabbar, wobei insbesondere auf die Hochdruck-Verbindungsleitung zwischen der Hochdruckpumpe und der Reinigungslanze verzichtet werden kann. Aufgrund des hohen Gewichtes ist jedoch insbesondere bei längeren Reinigungsarbeiten die Handhabung des Hochdruckreinigers beschwerlich und ermüdend, da dieser in ergonomisch ungünstiger Haltung getragen werden muß. Dies gilt insbesondere bei leistungsstarken Elektroantrieben oder Verbrennungsmotoren als Antrieb für den mobilen Einsatz der Hochdruckreiniger, da hierdurch das Gewicht des Hochdruckreinigers weiter steigt. Derartige Hochdruckreiniger mit mehr als 20 kg können jedoch kaum über längere Zeit getragen werden.Despite their lightweight construction, these known high-pressure cleaners still have a considerable weight of approximately 10 to 15 kg, provided that no concessions are made to the robustness of the drives and the high-pressure pump. Due to the combination into a compact device body, the high-pressure cleaner can be handled as a unit, and in particular the high-pressure connecting line between the high-pressure pump and the cleaning lance can be dispensed with. Due to the high weight, the handling of the high-pressure cleaner is difficult and tiring, especially during longer cleaning work, since it has to be carried in an ergonomically unfavorable position. This applies in particular to powerful electric drives or internal combustion engines as drives for the mobile use of high-pressure cleaners, since this increases the weight of the high-pressure cleaners. However, such high-pressure cleaners with more than 20 kg can hardly be worn for a long time.

Zudem sind derartige Hochdruckreiniger für bestimmte Einsatzfälle, beispielsweise die Unterbodenwäsche bei Fahrzeugen nur beschwerlich handhabbar, da das erheblich höhere Gewicht gegenüber einer Reinigungslanze an sich in gebückter Arbeitsstellung besonders hinderlich ist.In addition, such high-pressure cleaners are difficult to handle for certain applications, for example the underbody washing in vehicles, since the considerably higher weight compared to a cleaning lance per se in the bent working position is particularly cumbersome.

Demzufolge liegt der Erfindung die Aufgabe zugrunde, einen Hochdruckreiniger zu schaffen, der einfacher handhabbar ist und eine bequemere Arbeitshaltung ermöglicht.Accordingly, the object of the invention is to create a high-pressure cleaner which is easier to handle and enables a more comfortable working posture.

Diese Aufgabe wird gelöst durch einen Hochdruckreiniger mit den Merkmalen des Patentanspruches 1.This object is achieved by a high-pressure cleaner with the features of patent claim 1.

Durch die An- bzw. Abkuppelbarkeit der Reinigungslanze an bzw. von dem Gerätekörper des Hochdruckreinigers ergeben sich grundsätzlich zwei vorteilhafte Betriebsweisen des Hochdruckreinigers. Im angekuppelten Zustand der Reinigungslanze kann der gesamte Hochdruckreiniger als tragbare Einheit für kürzere Reinigungsarbeiten benutzt werden, wobei auf einen gesonderten Hochdruck-Anschlußschlauch verzichtet werden kann. Zum anderen kann jedoch in besonders vorteilhafter Weise für Arbeiten unter beengten Bedingungen oder für längere Reinigungsarbeiten, bei denen das Tragen der gesamten Einheit zu beschwerlich würde, die Reinigungslanze von dem Gerätekörper abgekuppelt werden, so daß nur noch diese getragen werden muß, während der übrige Gerätekörper als übliches Standgerät eines Hochdruckreinigers dient. Diese Betriebsweise eignet sich insbesondere für Arbeiten in ungünstiger Körperhaltung, z. B. in gebückter Stellung oder beispielsweise bei der Fassadenreinigung auf Baugerüsten, wobei der Gerätekörper als Standgerät am Boden verbleiben kann, während die Reinigungslanze abgekuppelt wird und somit nur diese am Gerüst hochgetragen werden muß. In diesem Falle dient ein üblicher Hochdruckschlauch der hydraulischen Verbindung zwischen Reinigungslanze und Hochdruckpumpe. Durch diese beiden Betriebsweisen ist somit ein universeller, dem jeweiligen Einsatzzweck angepaßter Betrieb des Hochdruckreinigers möglich. Die Umwandlung des Hochdruckreinigers von der einen in die andere Betriebsstellung erfolgt dabei durch eine formschlüssige Verbindung sehr rasch und einfach.Because the cleaning lance can be coupled or uncoupled to and from the device body of the high-pressure cleaner, there are basically two advantageous operating modes of the high-pressure cleaner. In the coupled state of the cleaning lance, the entire high-pressure cleaner can be used as a portable unit for shorter cleaning work, it being possible to dispense with a separate high-pressure connection hose. On the other hand, however, the cleaning lance can be uncoupled from the device body in a particularly advantageous manner for work in confined conditions or for longer cleaning work in which carrying the entire unit would be too difficult, so that only this has to be carried while the rest of the device body serves as a standard free-standing device for a high-pressure cleaner. This mode of operation is particularly suitable for working in an unfavorable posture, e.g. B. in a stooped position or, for example, when cleaning facades on scaffolding, the device body can remain as a standing device on the floor while the cleaning lance is uncoupled and thus only this must be carried up on the scaffolding. In this case, a standard high-pressure hose serves as the hydraulic connection between the cleaning lance and the high-pressure pump. These two modes of operation are thus a universal operation of the High pressure cleaner possible. The high-pressure cleaner is converted from one to the other operating position very quickly and easily thanks to a positive connection.

Diese formschlüssige Verbindung ist beispielsweise als schnell lösbare Schraubverbindung, z. B. mit Rändelschrauben ausgebildet, so daß eine einfache Ankupplung bzw. Abkupplung der Reinigungslanze von dem Gerätekörper möglich ist. Es kann jedoch auch eine Rastverbindung mit ineinander greifenden Rasten vorgesehen sein oder die Verbindung als Steckkupplung ausgebildet sein. Derartige Steckkupplungen, insbesondere zum Verbinden des Auslaßanschlusses der Hochdruckpumpe mit dem Einlaßanschluß der Reinigungslanze sind beispielsweise aus Fluidleitungen, z. B. beim Hydraulikanschluß von Landmaschinen bekannt. In vorteilhafter Weise ist dabei der Auslaßanschluß im direkten Anschluß mit dem Einlaßanschluß der Reinigungslanze, d.h. ohne Zwischenschaltung eines Hochdruckschlauches verbunden. Es kann jedoch auch ein Hochdruckschlauch zwischen diesen beiden Anschlüssen vorhanden sein, der in dem abgekuppelten Zustand ohnehin erforderlich ist, jedoch in dem angekuppelten Zustand beispielsweise am Gerätekörper aufgewickelt werden kann und somit die hydraulische Verbindung nicht aufgetrennt werden muß, sondern vielmehr nur die Befestigung der Reinigungslanze z. B. mit den vorgenannten Rändelschrauben oder einer Rastverbindung erfolgt.This positive connection is, for example, as a quick-release screw connection, for. B. with knurled screws so that a simple coupling or uncoupling of the cleaning lance from the device body is possible. However, a snap connection with interlocking catches can also be provided or the connection can be designed as a plug-in coupling. Such plug-in couplings, in particular for connecting the outlet connection of the high-pressure pump to the inlet connection of the cleaning lance, are made, for example, of fluid lines, for. B. known in the hydraulic connection of agricultural machinery. Advantageously, the outlet connection is in direct connection with the inlet connection of the cleaning lance, i.e. connected without the interposition of a high pressure hose. However, there can also be a high-pressure hose between these two connections, which is required in the uncoupled state anyway, but can be wound up in the coupled state, for example, on the device body and thus the hydraulic connection does not have to be broken, but rather only the attachment of the cleaning lance e.g. B. with the aforementioned thumbscrews or a snap connection.

Zu einer möglichst kompakten Gestaltung des Hochdruckreinigers ist das Handgriffteil dabei in vorteilhafter Ausgestaltung über der Hochdruckpumpe angekuppelt, so daß das Handgriffteil einerseits mit der Oberkante des Antriebsmotors und andererseits mit der Vorderkante der Hochdruckpumpe abschließt und sich somit eine etwa quaderförmige, kompakte Gestaltung der tragbaren Einheit ergibt.To make the high-pressure cleaner as compact as possible, the handle part is coupled in an advantageous embodiment above the high-pressure pump, so that the handle part closes on the one hand with the upper edge of the drive motor and on the other hand with the front edge of the high-pressure pump, thus resulting in an approximately cuboid, compact design of the portable unit .

Von weiterer Bedeutung ist hierbei, daß an dem Hochdruckreiniger zum Tragen ein Schulterriemen vorgesehen ist, da hierdurch die Gewichtsbelastung des zusammengekuppelten Hochdruckreinigers, insbesondere bei ungünstigen Körperhaltungen beträchtlich reduziert werden kann. In vorteilhafter Ausgestaltung ist hierbei das eine Ende des Schulterriemens am Gerätekörper und das andere Ende an der Reinigungslanze angekuppelt, so daß der Schwerpunkt der gesamten tragbaren Einheit etwa über der Hochdruckpumpe liegt. Hierbei wird erreicht, daß der relativ schwere Antriebsmotor in Arbeitsstellung hinter der Bedienperson liegt, während die Reinigungslanze mit ihrer beträchtlichen Auskragung nach vorne absteht und sich hierbei diese beiden Bauteile in etwa im Gleichgewicht halten. Diese Anordnung ist desweiteren beim Einsatz eines Verbrennungsmotors günstig, da hierdurch der Antriebsmotor hinter der Bedienperson angeordnet ist, so daß die heißen Abgase des Verbrennungsmotors mit beträchtlichem Abstand von der Bedienperson austreten, so daß keine Verbrennungen zu befürchten sind.Of further importance here is that a shoulder strap is provided on the high-pressure cleaner for carrying, since this causes the weight of the clutched together Pressure washer, especially with unfavorable postures, can be reduced considerably. In an advantageous embodiment, one end of the shoulder strap is coupled to the device body and the other end to the cleaning lance, so that the center of gravity of the entire portable unit is approximately above the high-pressure pump. What is achieved here is that the relatively heavy drive motor lies behind the operator in the working position, while the cleaning lance protrudes forward with its considerable projection and these two components are kept approximately in equilibrium. This arrangement is furthermore favorable when using an internal combustion engine, since this places the drive motor behind the operator, so that the hot exhaust gases of the internal combustion engine emerge at a considerable distance from the operator, so that no burns are to be feared.

Weiterhin ist von Vorteil, wenn an der Reinigungslanze zur besseren Führung der tragbaren Einheit zur Strahldüse hin gelegen ein zweiter Handgriff vorgesehen ist. Dieser ist bei zusammengekuppelter Reinigungslanze mit dem Gerätekörper dabei bevorzugt seitlich verschwenkbar, so daß eine bequemere Arbeitshaltung erreicht wird.It is also advantageous if a second handle is provided on the cleaning lance to better guide the portable unit toward the jet nozzle. When the cleaning lance is coupled together, it is preferably pivotable laterally with the device body, so that a more comfortable working posture is achieved.

Weitere vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche.Further advantageous embodiments are the subject of the dependent claims.

Nachfolgend werden anhand der Figuren zwei Ausführungsbeispiele näher beschrieben und erläutert. Es zeigen:

Fig. 1
einen Hochdruckreiniger bei dem Ankuppelvorgang
Fig. 2
eine leicht abgewandelte Ausführungsform, wobei die Reinigungslanze sowohl in abgekuppeltem als auch angekuppeltem Zustand dargestellt ist
Two exemplary embodiments are described and explained in more detail below with reference to the figures. Show it:
Fig. 1
a pressure washer during the coupling process
Fig. 2
a slightly modified embodiment, wherein the cleaning lance is shown both in the uncoupled and coupled state

In Fig. 1 ist ein Hochdruckreiniger 1 schematisch in Seitenansicht dargestellt. Der Hochdruckreiniger besteht zum einen aus einem Gerätekörper 2, der einen Antriebsmotor 3 und eine daran angeflanschte Hochdruckpumpe 4 in sich aufnimmt. Der Antriebsmotor 3 ist im allgemeinen ein Elektromotor, kann jedoch auch ein Verbrennungsmotor oder ein akkubetriebener Elektromotor sein. Die Hochdruckpumpe 4 ist eine über eine Taumelscheibe angetriebene Mehrfachaxialkolbenpumpe, an deren Pumpenkopf, hier dem linken Ende, ein Auslaßanschluß 5 vorgesehen ist, mit dem eine Reinigungslanze 6 über einen Hochdruckschlauch oder direkt in Verbindung steht.In Fig. 1, a high pressure cleaner 1 is shown schematically in side view. The high-pressure cleaner consists on the one hand of a device body 2, which has a drive motor 3 and a high-pressure pump 4 flanged onto it. The drive motor 3 is generally an electric motor, but can also be an internal combustion engine or a battery-operated electric motor. The high-pressure pump 4 is a multi-axial piston pump driven by a swash plate, at the pump head, here the left end, an outlet connection 5 is provided, with which a cleaning lance 6 is connected via a high-pressure hose or directly.

Die Reinigungslanze 6 besteht aus einem Handgriffteil 7 mit einem Betätigungselement 8, mit dem der Sprühvorgang der unter Hochdruck austretenden Reinigungsflüssigkeit über ein Strahlrohr 9 und eine Strahldüse 10 gesteuert wird. Die Reinigungsflüssigkeit, im allgemeinen Wasser, wird über eine nicht näher dargestellte Ansaugleitung von der Hochdruckpumpe 4 angesaugt.The cleaning lance 6 consists of a handle part 7 with an actuating element 8 with which the spraying process of the cleaning liquid escaping under high pressure is controlled via a jet pipe 9 and a jet nozzle 10. The cleaning liquid, generally water, is drawn in by the high-pressure pump 4 via a suction line (not shown).

Wesentlich ist hierbei, daß die Reinigungslanze 6 mit ihrem Handgriffteil 7 an den Gerätekörper 2 zu einer tragbaren Einheit 11, wie durch die geschweifte Klammer angedeutet, mittels einer formschlüssigen Verbindung 12 ankuppelbar ist, wie dies hier kurz vor Abschluß der Ankuppelbewegung dargestellt ist. Die formschlüssige Verbindung 12 kann hierbei als Schraubenverbindung 13 (vgl. auch Fig. 2) ausgebildet sein oder wie hier bevorzugt als Rastverbindung 14, wobei hier am hinteren Ende des Handgriffteils 7 ein Rastvorsprung 15 vorgesehen ist, während am Gehäusekörper 2 in einer Gehäusevertiefung eine komplementär ausgebildete Rastausnehmung 16 vorgesehen ist. Beim Ankuppelvorgang wird der Rastvorsprung 15 des Handgriffteils 7 in die Rastausnehmung 16 eingeführt und dann das Handgriffteil 7 z. B. mittels einer Rändelmutter an der Hochdruckpumpe 4 verschraubt. Es kann jedoch auch eine federbelastete Rastarretierung vorgesehen sein.It is essential here that the cleaning lance 6 can be coupled with its handle part 7 to the device body 2 to form a portable unit 11, as indicated by the curly bracket, by means of a positive connection 12, as is shown here shortly before the coupling movement is completed. The positive connection 12 can be designed as a screw connection 13 (cf. also FIG. 2) or, as is preferred here, as a latching connection 14, a latching projection 15 being provided here at the rear end of the handle part 7, while a complementary one is provided on the housing body 2 in a housing recess trained recess 16 is provided. During the coupling process, the locking projection 15 of the handle part 7 is inserted into the locking recess 16 and then the handle part 7 z. B. screwed to the high pressure pump 4 by means of a knurled nut. However, a spring-loaded locking device can also be provided.

In dem hier dargestellten Ausführungsbeispiel wird die Arretierung der Reinigungslanze 6 an dem Auslaßanschluß 5 der Hochdruckpumpe 4 hergestellt, in dem eine Überwurfmutter 17 an einem Einlaßanschluß 18 an der Reinigungslanze 6 verschraubt wird. Durch diese Ausführung ist zwischen den beiden letztgenannten Anschlüssen 5 und 18 kein Verbindungsschlauch erforderlich. Zudem übernimmt die Überwurfmutter 17 neben der hydraulischen Verbindung für die Reinigungsflüssigkeit zugleich eine Kupplungs- bzw. Arretierungsfunktion, so daß aufgrund der Rastverbindung 14 und der Schraubverbindung 13 in Form der Überwurfmutter 17 eine lösbare, dennoch stabile Verbindung der Reinigungslanze 6 an dem Gerätekörper 2 zu einer robusten und tragbaren Einheit 11 erreicht wird. Um die Befestigung des Handgriffteils 7 an dem Gerätekörper 2 auch seitlich zu stabilisieren, sind in dem Gerätekörper 2 an der Verbindungsfläche zum Handgriffteil 7 Gehäusevertiefungen oder Taschen vorgesehen, so daß die Reinigungslanze 7 zusammen mit der Schraubverbindung 13 und/oder Rastverbindung 14 an dem Gerätekörper 2 sicher verankert ist.In the exemplary embodiment shown here, the cleaning lance 6 is locked at the outlet connection 5 of the high-pressure pump 4 by screwing a union nut 17 onto an inlet connection 18 on the cleaning lance 6 becomes. With this design, no connecting hose is required between the latter two connections 5 and 18. In addition to the hydraulic connection for the cleaning fluid, the union nut 17 also assumes a coupling or locking function, so that due to the latching connection 14 and the screw connection 13 in the form of the union nut 17, a detachable, yet stable connection of the cleaning lance 6 on the device body 2 to one robust and portable unit 11 is achieved. In order to also laterally stabilize the attachment of the handle part 7 to the device body 2, housing recesses or pockets are provided in the device body 2 on the connection surface to the handle part 7, so that the cleaning lance 7 together with the screw connection 13 and / or latching connection 14 on the device body 2 is securely anchored.

Um eine glattflächige Außenform des Hochdruckreinigers 1 zu erreichen, ist das Handgriffteil 7 der Reinigungslanze 6 bevorzugt oberhalb der Hochdruckpumpe 4 etwa bündig mit der Ober- und Vorderkante des Gerätekörpers 2 eingesetzt. Es können jedoch auch Ankupplungs- und Verriegelungsvorrichtungen seitlich oder an der Rückseite des Gerätekörpers (hier rechts vom Antriebsmotor 3) vorgesehen sein, so daß das Handgriffteil 7 in letzterem Fall an der hier rechten Seite des Hochdruckreinigers 1 angekuppelt werden kann. Hierdurch würde sich eine Reduzierung der Baulänge des Hochdruckreinigers 1 ergeben. Zu der Verbindung des Auslaßanschlusses 5 mit dem beim Handgriffteil 7 einmündenden Einlaßanschluß 18 der Reinigungslanze 6 könnte hierbei eine fest installierte Verbindungsleitung dienen.In order to achieve a smooth outer shape of the high-pressure cleaner 1, the handle part 7 of the cleaning lance 6 is preferably inserted above the high-pressure pump 4 approximately flush with the top and front edges of the device body 2. However, coupling and locking devices can also be provided on the side or on the rear of the device body (here on the right of the drive motor 3), so that the handle part 7 can be coupled on the right side of the high-pressure cleaner 1 here in the latter case. This would result in a reduction in the overall length of the high-pressure cleaner 1. A permanently installed connecting line could serve to connect the outlet connection 5 with the inlet connection 18 of the cleaning lance 6 which opens into the handle part 7.

In bevorzugter Ausführung ist an dem Hochdruckreiniger 1 ein Schulterriemen 19 vorgesehen, der mit Befestigungspunkten 20, 21 befestigt ist. Hierdurch wird ein Tragen der Einheit 11 auch über längere Zeit ohne größere Anstrengung möglich. Hierbei ist zweckmäßig, daß das eine Ende des Schulterriemens 19 am Gerätekörper 2 angeordnet ist, während das andere Ende an der Reinigungslanze 6 möglichst weit vorne angeordnet ist, so daß die Mitte des Schulterriemens 19 etwa über der Hochdruckpumpe 4 zu liegen kommt. Hierdurch befindet sich der Tragpunkt etwa im Schwerpunkt des Hochdruckreinigers 1. Zur verbesserten Handhabbarkeit einer derartigen Geräteeinheit 11 kann an der Reinigungslanze 6 ein weiterer Handgriff 22 vorgesehen sein, mit dem die Führung des Strahlrohres 9 und der Strahldüse 10 beim Reinigen verbessert wird. Zur bequemeren Handhabung kann dabei dieser Handgriff 22 von einer hier dargestellten vertikalen Stellung in eine seitliche Stellung hochklappbar sein, wie dies durch einen strichpunktierten Pfeil angedeutet ist.In a preferred embodiment, a shoulder strap 19 is provided on the high-pressure cleaner 1 and is fastened with fastening points 20, 21. As a result, the unit 11 can be carried over a long period of time without great effort. It is expedient here that one end of the shoulder strap 19 is arranged on the device body 2, while the other end on the cleaning lance 6 is arranged as far forward as possible, so that the middle of the shoulder strap 19 comes to lie approximately above the high-pressure pump 4. As a result, the supporting point is located approximately in the center of gravity of the high-pressure cleaner 1. To improve the manageability of such a device unit 11, a further handle 22 can be provided on the cleaning lance 6, by means of which the guidance of the jet pipe 9 and the jet nozzle 10 is improved during cleaning. For more convenient handling, this handle 22 can be folded up from a vertical position shown here to a lateral position, as is indicated by a dash-dotted arrow.

In Fig. 2 ist eine abgewandelte Ausführungsform des Hochdruckreinigers 1 dargestellt, wobei hier das Handgriffteil 7 der Reinigungslanze 6 gegenüber der Ankuppelung im Bereich über der Hochdruckpumpe 4 in etwa über dem Antriebsmotor 3 an den Gerätekörper 2 ankuppelbar ist. Dies erfolgt beispielsweise mit einer Schraubverbindung 13 in Form einer Rändelschraube an der Unterseite des Handgriffteils 7, wobei damit eine stabile Verbindung mit dem Gehäuse des Antriebsmotors 3 erreicht wird. Das Handgriffteil 7 ist dabei an seiner Oberseite mit einer konkaven Vertiefung 23 versehen, so daß die Reinigungslanze 6 unter einen Tragegriff 24, der an seiner Unterseite mit einer entsprechenden Wölbung versehen ist, bis zum aufrechten Teil des Tragegriffes 24 eingeschoben werden kann und dann mit der hier dargestellten Rändelschraube 13 an einer im Teilschnitt dargestellten Gewindebohrung 13a arretiert werden kann. Es kann jedoch auch an dem Tragegriff 24 eine gestrichelt eingezeichnete Rastverbindung 14′ in Form eines federbelasteten Rastbolzens vorgesehen sein. In der vollständig angekuppelten Position kann dabei der Tragegriff 24 und der hintere Teil des Handgriffteils 7 zur Betätigung des Ventils 8 von einer Hand umfaßt werden.2 shows a modified embodiment of the high-pressure cleaner 1, with the handle part 7 of the cleaning lance 6 being able to be coupled to the device body 2 in relation to the coupling in the area above the high-pressure pump 4, approximately via the drive motor 3. This takes place, for example, with a screw connection 13 in the form of a knurled screw on the underside of the handle part 7, a stable connection with the housing of the drive motor 3 being thereby achieved. The handle part 7 is provided on its top with a concave recess 23, so that the cleaning lance 6 can be inserted under a handle 24, which is provided on its underside with a corresponding curvature, up to the upright part of the handle 24 and then with the Knurled screw 13 shown here can be locked to a threaded bore 13a shown in partial section. However, it can also be provided on the handle 24 a dashed locking connection 14 'in the form of a spring-loaded locking bolt. In the fully coupled position, the handle 24 and the rear part of the handle part 7 for actuating the valve 8 can be gripped by one hand.

In der hier gezeigten Stellung ist der Auslaßanschluß 5 der Hochdruckpumpe 4 über einen schematisch dargestellten Hochdruckschlauch 26 mit dem Einlaßanschluß 18 der Reinigungslanze 6 verbunden, wobei der Hochdruckschlauch 26 an einer Halterung 25 am vorderen Ende der Hochdruckpumpe 4 über deren Pumpenkopf aufgewickelt ist. Somit läßt sich in der hier gezeigten Stellung mit angekuppelter Reinigungslanze 6 der Hochdruckreiniger 1 als eine tragbare Einheit 11 betreiben, wobei die eine Hand das Betätigungselement 8 bedient und die andere Hand die Reinigungslanze 6 umfaßt.In the position shown here, the outlet connection 5 of the high-pressure pump 4 is connected to the inlet connection 18 of the cleaning lance 6 via a schematically illustrated high-pressure hose 26, the high-pressure hose 26 being connected to a holder 25 at the front end of the high-pressure pump 4 whose pump head is wound up. Thus, in the position shown here with the cleaning lance 6 coupled, the high-pressure cleaner 1 can be operated as a portable unit 11, one hand operating the actuating element 8 and the other hand encompassing the cleaning lance 6.

Für besonders diffizile Reinigungszwecke oder nach längerem Tragen oder bei der Bedienung durch weniger kräftige Bedienpersonen kann die Reinigungslanze 6 durch Lösen der Verbindung 12, hier der Rändelschraube 13 von dem Gerätekörper 2 abgenommen werden und der Hochdruckschlauch 26 abgewickelt werden, wie dies in Strichlinien angedeutet ist. Der Gerätekörper 2 dient somit als Standgerät, während nur noch die Reinigungslanze 6 getragen werden muß, so daß auch enge Reinigungsstellen z. B. der Unterboden eines Kraftfahrzeuges gut zugänglich ist.For particularly difficult cleaning purposes or after prolonged wear or when operating by less powerful operators, the cleaning lance 6 can be removed from the device body 2 by loosening the connection 12, here the knurled screw 13, and the high-pressure hose 26 can be unwound, as is indicated in broken lines. The device body 2 thus serves as a standing device, while only the cleaning lance 6 has to be carried, so that even narrow cleaning points such. B. the underbody of a motor vehicle is easily accessible.

Es sei darauf hingewiesen, daß bei dieser Ausbildung die Verbindung für die Reinigungsflüssigkeit, der Hochdruckschlauch 26, nicht gelöst werden muß. Falls dann wieder ein Einsatz als tragbare Einheit 11 mit angekuppelter Reinigungslanze 6 gewünscht wird, beispielsweise, um während des Sprühvorganges den Druck an der Hochdruckpumpe 4 direkt zu regeln, wird lediglich der Hochdruckschlauch 26 an der Halterung 25 aufgewickelt und die formschlüssige Verbindung 12 durch Einschieben des Handgriffteils 7 unter den Tragegriff 24 und Arretieren mittels der Rändelschraube 13 wieder hergestellt. Es sei darauf hingewiesen, daß auch bei dieser Ausführungsform der in Fig. 1 gezeigte Schulterriemen 19 vorgesehen sein kann.It should be noted that in this embodiment, the connection for the cleaning liquid, the high-pressure hose 26, does not have to be released. If use as a portable unit 11 with a coupled cleaning lance 6 is then desired again, for example in order to directly regulate the pressure at the high-pressure pump 4 during the spraying process, only the high-pressure hose 26 is wound up on the holder 25 and the positive connection 12 by inserting the Handle part 7 under the handle 24 and locking by means of the knurled screw 13 restored. It should be noted that the shoulder strap 19 shown in FIG. 1 can also be provided in this embodiment.

Claims (11)

  1. A high-pressure cleaning device (1) having a driving motor (3) combined therewith to form an apparatus body (2) and having attached thereto a high-pressure pump (4) including an outlet junction (5) to be hydraulically connected with a cleaning lance (6), comprising operating means (8), a jet pipe (9), and a blast nozzle (10) provided at the front end of said jet pipe,
    characterized in that
    said cleaning lance (6) is adapted to be coupled to said apparatus body (2) by means of a form-locking junction (12) to form a portable unit (11).
  2. The high-pressure cleaning device of claim 1, characterized in that said junction (12) is formed as a screw connection (13).
  3. The high-pressure cleaning device of claim 1, characterized in that said junction (12) is formed as a click-stop connection (14) comprising a notch (15) and an arresting recess (16) complementary thereto.
  4. The high-pressure cleaning device of claim 2, characterized in that said screw connection (13) is formed as a clamping nut (17) located at said outlet junction (5) and directly connected to an inlet junction (18) of said cleaning lance (6).
  5. The high-pressure cleaning device of claim 1, characterized in that said junction (12) is formed as a plug coupling.
  6. The high-pressure cleaning device of any of the preceding claims, characterized in that the handle means (7) above said high-pressure pump (4) is coupled to be almost flush with the top and front edges of said apparatus body (2).
  7. The high-pressure cleaning device of claim 1, characterized in that it provides for a shoulder belt (19) for carrying the assembly of apparatus body (2) and cleaning lance (6).
  8. The high-pressure cleaning device of claim 7, characterized in that one of the ends of said shoulder belt (19) is fastened to said apparatus body (2) and the other end thereof is fastened to said cleaning lance (6).
  9. The high-pressure cleaning device of claim 8, characterized in that the centre of the fastening points (20, 21) of said shoulder belt (19) is approximately situated above said high-pressure pump (4).
  10. The high-pressure cleaning device of any of the preceding claims, characterized in that it provides for a second handle (22) arranged at said cleaning lance (6) in the direction of said blast nozzle (10).
  11. The high-pressure cleaning device of claim 10, characterized in that said second handle (22) is pivotable from a vertical position to a laterally projecting position thereof.
EP92111325A 1991-07-04 1992-07-03 High-pressure cleaning device Expired - Lifetime EP0521520B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4122191 1991-07-04
DE4122191A DE4122191A1 (en) 1991-07-04 1991-07-04 HIGH PRESSURE CLEANER

Publications (2)

Publication Number Publication Date
EP0521520A1 EP0521520A1 (en) 1993-01-07
EP0521520B1 true EP0521520B1 (en) 1996-03-13

Family

ID=6435452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92111325A Expired - Lifetime EP0521520B1 (en) 1991-07-04 1992-07-03 High-pressure cleaning device

Country Status (3)

Country Link
EP (1) EP0521520B1 (en)
AT (1) ATE135267T1 (en)
DE (2) DE4122191A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US7854398B2 (en) 2005-10-26 2010-12-21 Techtronic Outdoor Products Technology Limited Hand held pressure washer
US8444068B2 (en) 2005-10-26 2013-05-21 Techtronic Outdoor Products Technology Limited Dual flow pressure washer

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Publication number Priority date Publication date Assignee Title
US8425203B2 (en) 2008-04-25 2013-04-23 Techtronic Outdoor Products Technology Limited Portable pressure washer system
DE102008059244A1 (en) * 2008-11-21 2010-05-27 Alfred Kärcher Gmbh & Co. Kg High pressure cleaning device, has retaining device with retainers, where one of retainers forms supporting surface, which is engaged with bottom side of accessory part and other retainer forms anti-slip locking structure
CA2744724A1 (en) * 2008-12-23 2010-07-01 Smg Brands, Inc. Sprayer
CN212508678U (en) 2015-11-20 2021-02-09 苏州宝时得电动工具有限公司 Hand-held high-pressure cleaning machine
CN207479075U (en) * 2016-12-06 2018-06-12 苏州宝时得电动工具有限公司 Handheld high-voltage cleaning machine
CN110694977A (en) * 2018-07-09 2020-01-17 苏州宝时得电动工具有限公司 Hand-held high-pressure cleaning machine and cleaning equipment

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DE3619326A1 (en) * 1986-06-09 1987-12-10 Josef Kraenzle PUMP UNIT
DE8713954U1 (en) * 1987-10-17 1987-12-03 Carl Platz Hochdrucktechnik Gmbh, 6710 Frankenthal, De
DE8815807U1 (en) * 1988-12-21 1989-11-02 Wap Reinigungssysteme Gmbh & Co, 7919 Bellenberg, De
US4972994A (en) * 1989-07-11 1990-11-27 Shop-Vac Corp. Operational mode conversion for pressure washer spray
DE9013677U1 (en) * 1990-09-29 1990-12-13 Suttner Gmbh & Co Kg, 4800 Bielefeld, De
DE9100904U1 (en) * 1991-01-26 1991-04-18 Wap Reinigungssysteme Gmbh & Co, 7919 Bellenberg, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7854398B2 (en) 2005-10-26 2010-12-21 Techtronic Outdoor Products Technology Limited Hand held pressure washer
US8444068B2 (en) 2005-10-26 2013-05-21 Techtronic Outdoor Products Technology Limited Dual flow pressure washer

Also Published As

Publication number Publication date
DE4122191A1 (en) 1993-01-07
ATE135267T1 (en) 1996-03-15
EP0521520A1 (en) 1993-01-07
DE59205647D1 (en) 1996-04-18

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