CN100571558C - Respirator - Google Patents

Respirator Download PDF

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Publication number
CN100571558C
CN100571558C CNB2004800100112A CN200480010011A CN100571558C CN 100571558 C CN100571558 C CN 100571558C CN B2004800100112 A CNB2004800100112 A CN B2004800100112A CN 200480010011 A CN200480010011 A CN 200480010011A CN 100571558 C CN100571558 C CN 100571558C
Authority
CN
China
Prior art keywords
helmet
respirator
fan
hanging scrolls
plug
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 - Fee Related
Application number
CNB2004800100112A
Other languages
Chinese (zh)
Other versions
CN1774187A (en
Inventor
科林·丘奇
伊恩·特雷弗·丹普尼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Helmet Integrated Systems Ltd
Original Assignee
Helmet Integrated Systems Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Helmet Integrated Systems Ltd filed Critical Helmet Integrated Systems Ltd
Publication of CN1774187A publication Critical patent/CN1774187A/en
Application granted granted Critical
Publication of CN100571558C publication Critical patent/CN100571558C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/04—Gas helmets
    • A62B18/045—Gas helmets with fans for delivering air for breathing mounted in or on the helmet
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/18—Face protection devices
    • A42B3/22—Visors
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/082—Assembling eyepieces, lenses or vision-correction means in or on gas-masks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

A kind of respirator helmet (10 ') or other are suitable for receiving by plug (66) and socket arrangements (70) helmet of bar (62) that can pivot; the described bar that pivots (62) carrying protection screen (63), described like this screen can move between the position of the lower position of the front portion of the wearer's of the helmet face and rising.

Description

Respirator
Technical field
The present invention relates to respirator (respirator), perhaps other helmet, for example crash helmet of zone face first (visored).
Background technology
The respirator that holds form certainly that uses in the environment of oxygen abundance is at GB 2,183, is illustrated in 488.Respirator comprises the cheese housing of incorporating headband (harness) into, is used for cooperating with user's head, and has and rely on from the front portion at its edge with on user's face and around the vizard (visor) of user's face extension.Separately, cross head from after-opening and extend then passage on the face after vizard downwards to limit by and projection before headband and afterwards on headband for housing.Battery-driven electric fan is placed in the passage adjacent with its after-opening ambient air is drawn in the opening with the described passage of flowing through.Housing is provided with the pad filter, and described pad filter crosses the passage after-opening and is engaged.
Be limited at from the chemoprotectant specified level that physical protection and filter gave of the housing of respirator by such protection that respirator gave.
In its preferred embodiment at least, the objective of the invention is to solve this and other problem.
Summary of the invention
An aspect of of the present present invention provides a kind of set of hanging scrolls of using with the respirator helmet that claim 1 limited or other helmet (screen bar).The set of hanging scrolls of this type can be used to the helmet is added further guard block (for example welding shielding part).Other aspect provides a kind of helmet that is suitable for receiving such set of hanging scrolls, and the combination of the helmet and set of hanging scrolls.
In addition, stop up or along with the decline of the voltage of fan battery, air flows through along with filter becomes, the pressure in the respirator will reduce, and reduce the efficient of respirator, and reduce to give user's protection like this.In order to detect decline efficient, being well known that device is installed in provides within the respirator of vision indication of protection decline degree the user.For example, GB 2,130, and 893 have described the installed part of pressure measurer of the floating type in the respirator and user's visual field.But, the ACTIVE CONTROL that such device can not provide any air to supply with within respirator.
In a further embodiment, the present invention attempts to address these and other problems.
Other one side of the present invention provides a kind of respirator, comprise and be used to surround the cover of user's face area at least, filter, be used to produce fan by the air stream of filter, the airflow that is used for being filtered is passed near the pipeline (duct) user's the face, be used for bypass duct that the part of described stream is extracted from pipeline, and the remainder that then part that is extracted is sent back to described stream, be used to measure the air by bypass duct flow velocity device and be used to respond the device that measured flow velocity is used to control described fan.
According to an aspect of the present invention, a kind of respirator is provided, comprise the cover, the filter that surround user's face area at least, be used to produce fan by the air stream of filter, the airflow that is used for being filtered is passed near the pipeline of user's face, be used for extracting the remainder that the bypass duct of a part of described stream and the part that then will be extracted send back to described stream, be used to measure the device of the air velocity by described bypass duct and be used to respond the device that measured flow velocity is controlled described fan from described pipeline.
According to a further aspect of the invention; a kind of set of hanging scrolls that the respirator helmet or other are suitable for carrying the helmet of protection screen that is used for is provided; and the arm and the bar that comprise pivot, extend from described pivot adjacent to each end of described set of hanging scrolls; described bar is connected to arm at the some place that separates with pivot; thereby the free end of described bar back extends towards described pivot; described free end has half that plug and socket is arranged; described thus set of hanging scrolls can be positioned on the helmet described screen is arranged on the front portion of wearer's face, can rise described protection screen when the described helmet is worn.
In addition, the present invention also provides a kind of respirator or other helmet, is suitable for by aforementioned set of hanging scrolls carrying protection screen, the described helmet comprises on each side that described plug and socket arranges other half.
Other advantage of the present invention will be illustrated in the dependent claims, below accompanying drawing be described.
Description of drawings
The preferred embodiments of the present invention describe with reference to accompanying drawing, wherein:
Fig. 1 is the lateral perspective of respirator;
Fig. 2 is the perspective view of the respirator of Fig. 1;
Fig. 3 is that a part of parts are omitted the lateral perspective with the respirator of Fig. 1 of the position that shows air duct;
Fig. 4 has shown the viewgraph of cross-section of the respirator of Fig. 1;
Fig. 5 has illustrated the filter of respirator and the viewgraph of cross-section of fan;
Fig. 6 has shown the system of the fan of the respirator that is used for control chart 1;
Fig. 7 A has shown the respirator that is suitable for holding the bar that carries other protection screen;
Fig. 7 B has shown the respirator of Fig. 7 A with bar and the screen that is connected;
Fig. 8 has shown the end of bar, has shown the mechanism that is fixed to respirator by it;
Fig. 9 has shown and has formed arm and the bar that makes the part of described mechanism that is fixed to respirator by it;
Figure 10 has shown that bar is fixed to the mode of respirator;
Figure 11 has shown the detailed view that is fixed to the mechanism of respirator by its described screen in lower position;
Figure 12 has shown the detailed view that is fixed to the mechanism of respirator with the bar of the screen in the raised position.
The specific embodiment
With reference to Fig. 1-4, respirator 10 comprises having cover, and described cover has the dome-shaped shock resistance shell body 12 of inner housing 14 that is used to carry vizard 16 of the rigidity of being connected to, and vizard 16 is pivotably connected on it.The peripheral sealed ventilator to the end 18 of inner housing 14, described ventilator 18 are formed the scope with the area of bed that cooperates designated user.Ventilator 8 surrounds user's head, and with inner housing 14 and vizard 16, limits user 20 breathing area.Neck seal 22 (Fig. 4) is connected to ventilator and uses with the top part sealing around user's neck.Alternatively, head ventilator 18 can be incorporated in the whole tights.
Air is transferred to breathing area to transmit by the air transmission pipeline 24 that extends from the rear portion of inner housing 14 with air stream is near user 22 face.The fan 26 that is positioned on the rear portion of inner housing 14 promotes air by pipeline 24.Air cleaner 28 is configured to filter the air that enters fan 26 by air intake 27.Fan 26 provides energy by battery 29, battery 29 can be contained in removedly to be settled on the either side of housing 14 near among the chamber 29a of user's ear (to be provided for the lower center of gravity that respirator is used), perhaps is arranged on in the band knapsack (belt pack) of being with the waist that is bundled into user 22.The expiration that comes from breathing area is from respirator 10 one or more hole 44 releases by can valve regulation (valved) the part of the bottom of respirator.
With reference to Fig. 4,5, enter the folding glass fiber filter 28 of the air of air cleaner 28 by air intake 27, and leave filter 28 by centre bore 31 by filtered air stream.Filter 28 carrying screw threads 32 are so that filter 28 can be fixed to profile (profiled) screw thread of complying with releasedly, and described screw thread is formed on the entrance structure 33 of fan housing, are used for making that replacing filter is easy to.Fan 26 is tangential fans, and the tangent direction of the arc that the tip of the rotating vane that rotation forwarded to and fans when wherein air entered from being parallel to is described is to be discharged into the pipeline 24 by ell (elbow).Chassis 34 has the U-shaped section annulus, and it keeps elastic reactance vibration installed part, and described installed part keeps fanning two major parts 37,38 of housing conversely.Fan motor 40 is directly mounted on the fan 26, and the micro switch of operating by quadrant (quadrant) arm of being settled by relative user's head 42 switches on and off.
This layout of air cleaner and fan is used for air cleaner is settled rear portion near user's head, with the center of gravity of the respirator center near user's head.In addition, do not need recirculation plate; Entrance structure 33 prevents recirculation substantially.
In order to control the air stream by breathing area, respirator comprises the system of the speed that is used to control fan 26.Respirator 10 comprises the bypass duct 44 that is used for extracting from air transmission pipeline 24 portion of air stream.With reference to Fig. 4,6, the air that enters bypass duct 44 from pipeline 243 flows into air flow sensor 46, such as Honeywell AWM series mass (mass) air flow sensor, and the remainder of the stream of the air within sensor is got back to pipeline (duct) 24.Alternatively, bypass duct can directly be discharged in the breathing area.
The quality air flow sensor typically comprises two temperature sensors in passage, such as electro-hot regulator, each side of heater has one (upstream and downstream).The heat transfer characteristic of heater is associated with the air molecule number by it on specific speed.From the signal of sensor output is the indication of the mass velocity within the bypass duct 44, as determining from the temperature contrast between two temperature sensors.Signal 48 receives by microcomputer 50, and it is determined from described signal that mass velocity within the pipeline 24, the pass between stream in the pipeline 24 and the pipeline 44 tie up to and pre-determines in the microprocessor and programme.The flow velocity of measuring like this from pipeline 24, microprocessor 50 controls output to mark (the mark)/space ratio of signal output of motor of fan 26 to keep constant flow velocity in air duct 24.This makes owing to compensate by increasing the speed of fanning such as any decline of the caused flow velocity of loss of fragment that is gathered together gradually in the air cleaner 28 or battery power.
When the described system of beginning, the condition of air cleaner initially is unknown, and the control signal that outputs to the motor that is used to fan like this has predetermined mark/space ratio (mark/spaceratio).This ratio is then according to the output coarse adjustment that comes self-detector 46, and flow velocity descends rapidly in target window like this, and more accurate then, flow velocity is on the desired value like this.Microprocessor 50 will carry out less adjusting to keep the target flow velocity by pipeline 24 to mark/space ratio then continuously.Push-on switch (boost switch) can be set up and be used by the user and to be used for increasing air stream temporarily.
In order to warn the flow velocity measured decline of user 22 by pipeline, the display 52 that is connected to microprocessor 50 is set on the vizard 14.For example, display 52 can comprise a series of light emitting diodes, diode illuminates by microprocessor 50 gradually according to the mark/space ratio of the signal of the motor that supplies to fan, and its level is and the indication that stops the problem that degree is relevant such as air cleaner.
Other embodiment will be illustrated, and it makes the wearer of respirator that extra suitable protection is connected to his performed activity, wear described respirator (for example, welding shield or mesh vizard) simultaneously.
Fig. 7 A, B have shown that usually according to aforesaid respirator 10 ', exception is that filter 28 is invisible in the drawings.Except above-mentioned described feature, the respirator of this embodiment is suitable for holding the bar of arranging the carrying protection screen by plug, and described like this screen is set on wearer's the front portion of face.Respirator is shown not screen in Fig. 7 A, show connected described screen 60 (under the situation of welding shield) in Fig. 7 B.
Bar 62 is bent, and it roughly complies with the shape of the shell body 12 of respirator like this.Each end one of (its be displayed among Fig. 8) of bar 62 is provided with each arm 64, and its end is installed on the end of bar 62 by each pivot 66 pivotly.The layout of bar 62, arm 64 and the rotation of pivot 66 (normally coaxial) is such: arm be held like this they normally level and on identical height, bar can normally pivot up and down.On the lower end of the scope of the motion of bar 62 relative arms 64 (wherein will be arranged in the wearer's of respirator front portion from the screen that bar relied on when bar is connected thereto), arm extends (wearer of respirator relatively) usually forward and is parallel to bar 62 usually.In this position, bar 62 is limited further downward motion by pivot 66.
Free end 65 carrier bar 68 (referring to Fig. 9) forms of each arm 64 enter the plug bending of bar (relatively) again, described bar 68 extend from the end of arm 64 from pivot 66 away from, usually still form acute angles with arm 64 on the direction of pivot 66, it is connected on the described arm 64.Towards the free end of bar 68, be provided with circumferential brake (detent) 72, described brake 72 has the obtuse angle, the V-arrangement cross section.
Get back to Fig. 1,2 and 7A, adjacent with the temple zone, each side of the shell body 12 of respirator is provided with at each socket with upwardly extending passage 70 forms in side before and after usually.In an illustrated embodiment, passage 70 is arranged on the vizard pivot cover 17 of respirator and to the rear portion of pivot, it is set for the vizard 16 of himself a little.Like this, screen 63 and vizard 16 can rise together, perhaps shield 63 and can be independent of vizard 16 rises, and respirator is worn simultaneously.
With reference to Fig. 7 A, 10 and 11, each passage 70 be suitable for holding bar 68 in the lump by with passage 70 in the brake 72 that cooperates of corresponding maintenance structure 74 keep, the screen 60 that is relied on from bar 62 can be arranged on lower position (shown in Fig. 7 B) before wearer's the face from it and rotates to its discal patch 62 and cross the raised position that extend at the top of respirator usually like this, screen 60 extends forward usually, the visual field (detailed position is displayed among Figure 12) that does not stop the wearer.
When the set of hanging scrolls of this embodiment (and the screen that connects) is fixed to respirator, the wearer can raise and reduce described screen, and the helmet is worn simultaneously.
Although this embodiment is applied to respirator and has been carried out explanation with reference to it, it also can be applied on the helmet of other type with respirator function.
Each feature described in the disclosed and/or accompanying drawing can be incorporated the present invention in this specification, and is independent of other disclosed and/or illustrated feature.

Claims (24)

1. respirator, comprise the cover, the filter that surround user's face area at least, be used to produce fan by the air stream of filter, the airflow that is used for being filtered is passed near the pipeline of user's face, bypass duct, described bypass duct is used for extracting the described air stream that is filtered of a part and the part that then will be extracted sends back to the remainder of the described air stream that is filtered from described pipeline, is used to measure the device of the air velocity by described bypass duct and is used to respond the device that measured flow velocity is controlled described fan.
2. respirator according to claim 1 is characterized in that, the described device that is used to measure comprises the quality air flow sensor.
3. according to claim 1 or 2 described respirators, it is characterized in that described bypass duct is arranged to the air stream by it is sent back in the remainder of described ducted stream.
4. according to claim 1 or 2 described respirators, it is characterized in that described bypass duct is arranged to the air stream by it is sent back in the remainder of the described air stream that is filtered in the breathing area of respirator.
5. respirator according to claim 1 and 2 is characterized in that, the described device that is used to control is arranged to supply to according to measured flow velocity control the energy of the motor of fan.
6. respirator according to claim 5 is characterized in that, the described device that is used to control is suitable for controlling the mark/space ratio of the signal that outputs to the fan motor.
7. respirator according to claim 1 and 2 comprises the display unit that is used for being used for the user of respirator is provided visual alert under the situation that measured flow velocity reduces.
8. respirator according to claim 7 is characterized in that, described display unit produces visual alert according to the signal that outputs to motor.
9. respirator according to claim 8 is characterized in that, display unit comprises a plurality of light emitting diodes that a plurality of mark/space ratio that are arranged to according to described signal illuminate gradually.
10. respirator according to claim 1 and 2 is characterized in that, filter replacedly is coupled in the entrance structure of housing of fan.
11. respirator according to claim 1 and 2, it is characterized in that described fan is to be arranged to receive the tangential fan of the air stream that is filtered and will be discharged into the described pipeline with the tangent air stream of the arc of describing by the tip of blade from the filter of the rotating shaft of the blade that is basically parallel to fan.
12. respirator according to claim 1 and 2 is characterized in that, described fan comprises the housing with two major parts, and it keeps by the antivibration installed part.
13. respirator according to claim 1 and 2 is characterized in that, described respirator comprises the chamber adjacent with user's ear, is used to hold the battery that drives fan.
14. one kind is used for the set of hanging scrolls that the respirator helmet or other are suitable for carrying the helmet of protection screen; and the arm that comprises pivot, extends from described pivot adjacent to each end of described set of hanging scrolls; one bar is connected to arm at the some place that separates with pivot; thereby the free end of described bar back extends towards described pivot; described free end has plug or socket; described thus set of hanging scrolls can be positioned on the helmet described protection screen is arranged on the front portion of wearer's face, can rise described protection screen when the described helmet is worn.
15. set of hanging scrolls according to claim 14 has crooked shape roughly to comply with the shape of the helmet.
16., it is characterized in that described free end has plug according to claim 14 or 15 described sets of hanging scrolls.
17. set of hanging scrolls according to claim 16 is characterized in that, each plug comprises the bar with brake, and described brake is used for matching with the corresponding maintenance structure of described socket.
18. a respirator helmet or other helmet; be suitable for by carrying protection screen according to the arbitrary described set of hanging scrolls of claim 14-15; the described helmet has socket in each side when described free end has plug, and the described helmet has plug in each side when described free end has socket.
19. the respirator helmet according to claim 18 or other helmet, the described temple zone that is included in plug in the helmet or the socket and the helmet is adjacent.
20. the respirator helmet according to claim 19 or other helmet is characterized in that, described being included on the vizard that plug in the helmet or socket be set at the helmet.
21. according to the arbitrary described respirator helmet of claim 18-20 or other helmet, it is characterized in that described free end has plug, the described helmet has socket.
22. the respirator helmet according to claim 21 or other helmet is characterized in that, described socket is set on the vizard pivot cover of the helmet.
23. the combination of the helmet and set of hanging scrolls, the described helmet is according to the arbitrary described respirator helmet of claim 18-22 or other helmet, and described set of hanging scrolls is according to the arbitrary described set of hanging scrolls of claim 14-17.
24. the helmet according to claim 23 and set of hanging scrolls combination, the adjacent pivotally placed of the vizard of the relative helmet of each bar pivot, helmet vizard and protection screen can rise when the helmet is worn together like this.
CNB2004800100112A 2003-03-27 2004-03-29 Respirator Expired - Fee Related CN100571558C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0307111A GB2399758A (en) 2003-03-27 2003-03-27 Respirator with means for controlling a fan in response to a measured flow rate
GB0307111.5 2003-03-27
GB0324880.4 2003-10-24

Publications (2)

Publication Number Publication Date
CN1774187A CN1774187A (en) 2006-05-17
CN100571558C true CN100571558C (en) 2009-12-23

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CNB2004800100112A Expired - Fee Related CN100571558C (en) 2003-03-27 2004-03-29 Respirator

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CN (1) CN100571558C (en)
AT (1) ATE495682T1 (en)
DE (1) DE602004031091D1 (en)
GB (3) GB2399758A (en)
NZ (1) NZ554823A (en)
SG (1) SG151101A1 (en)
ZA (1) ZA200507810B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009244722B2 (en) 2008-04-03 2012-07-12 3M Innovative Properties Company Pivot assembly for headgear
AU2011238597B2 (en) * 2010-04-06 2013-10-10 3M Innovative Properties Company Helmet-mounted respirator apparatus with a dual plenum system
CN105054473B (en) * 2015-07-14 2017-06-09 国网山东省电力公司经济技术研究院 Digging foundation safety device
CA3010830A1 (en) * 2016-01-07 2017-07-13 Thi Total Healthcare Innovation Gmbh Donnable barrier systems, devices, and methods with touchless control
CN106666909B (en) * 2017-03-02 2023-10-13 浙江雷邦光电技术有限公司 Fire-fighting helmet with improved helmet mounting structure
GB2603547A (en) * 2020-07-06 2022-08-10 Fromanteel Ltd Protective head covering
US11065479B1 (en) * 2020-08-18 2021-07-20 Alexander P Rafalovich Portable air powered respirator
AT525121A1 (en) 2021-05-28 2022-12-15 Tb Safety Ag protective hood arrangement

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003656A1 (en) * 1984-12-19 1986-07-03 Loennstedt Bo Gunnar Hinge device for a retractable face guard on a safety helmet
US4713844A (en) * 1986-07-16 1987-12-22 Gentex Corporation Protective helmet with face mask sealing means
DE8714490U1 (en) * 1987-10-30 1988-09-22 Allit-Plastic-Werk Kimnach Gmbh & Co, 6550 Bad Kreuznach, De
FR2676652A1 (en) * 1991-05-23 1992-11-27 Gallet Sa Arm for securing a breathing mask on a protective helmet
DE4132404A1 (en) * 1991-09-26 1993-04-01 Ver Energiewerke Ag Fixture for visor on safety helmet - consists of double link on each side, with strip, plug connection, curved groove and pin
DE29820078U1 (en) * 1998-11-10 2000-03-23 Enha Kunststoffverarbeitungs G Visor joint
JP2000107304A (en) * 1998-10-05 2000-04-18 Shigematsu Works Co Ltd Loose-fitting type air-sending mask

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2640701C3 (en) * 1976-09-10 1979-03-22 Draegerwerk Ag, 2400 Luebeck Protective helmet combined with a respirator
GB2058577A (en) * 1979-09-25 1981-04-15 Racal Safety Ltd Improvements in and relating to breathing apparatus
DE3032371A1 (en) * 1980-08-28 1982-03-18 Drägerwerk AG, 2400 Lübeck Respiratory protective helmet with visor - has flowmeter inside helmet near outlet end of induced air supply tube
GB2195037B (en) * 1986-07-15 1990-06-06 Martindale Protection Limited Electric motor drive
FI80606C (en) * 1987-10-05 1990-07-10 Kemira Oy FOERFARANDE FOER REGLERING AV LUFTMAONGDEN SOM MATAS IN I EN GASMASK SAMT EN GASMASK SOM GENOMFOER DENNA FOERFARANDE.
GB8815179D0 (en) * 1988-06-25 1988-08-03 Racal Safety Ltd Differential pressure sensor
DE68909707T2 (en) * 1988-07-26 1994-02-03 Racal Health & Safety Ltd Respiratory Equipment.
GB9112618D0 (en) * 1991-06-12 1991-07-31 Racal Safety Ltd Dc motor control
DE10021581B4 (en) * 2000-04-27 2005-01-13 Auergesellschaft Gmbh Volume control for fan filter units
EP1197244A3 (en) * 2000-10-11 2002-10-23 Micronel AG Breathing protection apparatus for a safety device such as protective mask, hood or clothing
US6792944B1 (en) * 2002-02-26 2004-09-21 Pabban Development Inc. Air filtration and control system including headgear

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003656A1 (en) * 1984-12-19 1986-07-03 Loennstedt Bo Gunnar Hinge device for a retractable face guard on a safety helmet
US4713844A (en) * 1986-07-16 1987-12-22 Gentex Corporation Protective helmet with face mask sealing means
DE8714490U1 (en) * 1987-10-30 1988-09-22 Allit-Plastic-Werk Kimnach Gmbh & Co, 6550 Bad Kreuznach, De
FR2676652A1 (en) * 1991-05-23 1992-11-27 Gallet Sa Arm for securing a breathing mask on a protective helmet
DE4132404A1 (en) * 1991-09-26 1993-04-01 Ver Energiewerke Ag Fixture for visor on safety helmet - consists of double link on each side, with strip, plug connection, curved groove and pin
JP2000107304A (en) * 1998-10-05 2000-04-18 Shigematsu Works Co Ltd Loose-fitting type air-sending mask
DE29820078U1 (en) * 1998-11-10 2000-03-23 Enha Kunststoffverarbeitungs G Visor joint

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GB2399759A (en) 2004-09-29
SG151101A1 (en) 2009-04-30
GB2427564A (en) 2007-01-03
CN1774187A (en) 2006-05-17
DE602004031091D1 (en) 2011-03-03
GB0324880D0 (en) 2003-11-26
GB2427564B (en) 2007-09-19
GB0613862D0 (en) 2006-08-23
ATE495682T1 (en) 2011-02-15
NZ554823A (en) 2008-08-29
GB2399758A (en) 2004-09-29
GB2399759B (en) 2006-11-22
GB0307111D0 (en) 2003-04-30
ZA200507810B (en) 2006-12-27

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