CA2440737A1 - Liquid jet pump - Google Patents
Liquid jet pump Download PDFInfo
- Publication number
- CA2440737A1 CA2440737A1 CA002440737A CA2440737A CA2440737A1 CA 2440737 A1 CA2440737 A1 CA 2440737A1 CA 002440737 A CA002440737 A CA 002440737A CA 2440737 A CA2440737 A CA 2440737A CA 2440737 A1 CA2440737 A1 CA 2440737A1
- Authority
- CA
- Canada
- Prior art keywords
- stem
- cylinder
- valve
- liquid
- vertically movable
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract 48
- 230000002093 peripheral effect Effects 0.000 claims abstract 11
- 230000001105 regulatory effect Effects 0.000 claims 5
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1059—Means for locking a pump or its actuation means in a fixed position
- B05B11/106—Means for locking a pump or its actuation means in a fixed position in a retracted position, e.g. in an end-of-dispensing-stroke position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
- B05B11/0064—Lift valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
- B05B11/1039—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being mechanically opened after a defined accumulation stroke
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1066—Pump inlet valves
- B05B11/1067—Pump inlet valves actuated by pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1073—Springs
- B05B11/1077—Springs characterised by a particular shape or material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1097—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke
Abstract
A liquid jetting pump of the present invention is constructed such that an intra container liquid is sucked into a cylinder through a suction valve by moving a vertically movable member up and down, and the intra cylinder liquid is jetted out of a nozzle through a discharge valve from a stem. A plurality of ribs are protruded in a peripheral direction from a lower edge part within the cylinder. Engagement recessed portions are formed in inner parts of the upper surfaces of the ribs. A
lower edge of a coil spring for biasing the vertically movable member is secured to each of the engagement recessed portions, thereby permitting a flow of liquid on both sides of the lower edge of the spring internally externally.
lower edge of a coil spring for biasing the vertically movable member is secured to each of the engagement recessed portions, thereby permitting a flow of liquid on both sides of the lower edge of the spring internally externally.
Claims (18)
1. A liquid jetting pump comprising:
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward within said container;
a stem provided so that said stem is vertically movable in a central portion within said cylinder in an upward biased state and having a discharge valve in which a valve hole formed in an inner upper part is closed by a valve member vertically movable by a liquid pressure;
an annular piston having its outer peripheral surface slidably fitted to the inner surface of said cylinder, and connected to a lower part of the outer surface of said stem to permit a flow of liquid in the inner peripheral surface lower part;
an annular auxiliary piston so fitted to the lower part of the outer periphery of said stem as to be vertically movable at a predetermined stroke, having its outer peripheral surface slidably attached to the inner surface of said annular piston and formed so that a through-hole holed in a peripheral wall portion of said stem is openable and closable; and a head, with a nozzle, so provided in continuation from an upper edge of said stem as to be vertically movable above said mounting cap, the liquid within said cylinder being led into said stem via said opened through-hole and jetted out of said nozzle through said discharge valve by pushing down said push-down head, and the liquid within said container being sucked into said cylinder through a suction valve by negative-pressurizing the interior of said cylinder when said push-down head is raised, wherein said through-hole can be closed by said auxiliary piston only in a maximum ascent position of said stem.
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward within said container;
a stem provided so that said stem is vertically movable in a central portion within said cylinder in an upward biased state and having a discharge valve in which a valve hole formed in an inner upper part is closed by a valve member vertically movable by a liquid pressure;
an annular piston having its outer peripheral surface slidably fitted to the inner surface of said cylinder, and connected to a lower part of the outer surface of said stem to permit a flow of liquid in the inner peripheral surface lower part;
an annular auxiliary piston so fitted to the lower part of the outer periphery of said stem as to be vertically movable at a predetermined stroke, having its outer peripheral surface slidably attached to the inner surface of said annular piston and formed so that a through-hole holed in a peripheral wall portion of said stem is openable and closable; and a head, with a nozzle, so provided in continuation from an upper edge of said stem as to be vertically movable above said mounting cap, the liquid within said cylinder being led into said stem via said opened through-hole and jetted out of said nozzle through said discharge valve by pushing down said push-down head, and the liquid within said container being sucked into said cylinder through a suction valve by negative-pressurizing the interior of said cylinder when said push-down head is raised, wherein said through-hole can be closed by said auxiliary piston only in a maximum ascent position of said stem.
2. ~A liquid jetting pump according to claim 1, wherein a vertical stroke of said discharge valve member is regulated so that Vb - Vc is equal to or larger than Va, wherein Va is the volumetric capacity of said nozzle, Vb is the volumetric capacity of the liquid passageway where said discharge valve member is vertically movable, and Vc is the volume of said discharge valve member.
3. ~A liquid jetting pump according to claim 1, wherein a suction valve member constituting said suction valve is always biased in a valve hole closing direction.
4. ~A liquid jetting pump according to claim 1, wherein said auxiliary piston is always biased upward with respect said stem, and said through-hole can be closed by said auxiliary piston only when said stem is raised at the maximum.
5. ~A liquid jetting pump according to claim 1, wherein said auxiliary piston is capable of engaging with said cylinder in a closed state of said through-hole in the maximum ascent position of said stem but capable of disengaging after said through-hole has been opened by pushing down said head.
6. ~A liquid jetting pump comprising:
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward into said container;
a stem having an annular piston fitted to an interior of said cylinder and protruding from a lower part of an outer periphery, and so provided as to be vertically movable in an upward-biased state;
a push-down head, with a nozzle, disposed in continuation from an upper edge of said stem and so provided as to be vertically movable above said mounting cap; and a discharge valve provided with a valve member for closing a valve hole by placing it on a valve seat provided on an inner upper part of said stem, a liquid within said container being sucked into said cylinder through said suction valve, and a liquid within said cylinder being jetted out of said nozzle through said discharge valve from said stem by vertically moving a vertically movable member constructed of said stem and said push-down head, wherein a bar-like member with its upper edge part protruding into said stem is provided, a tip of said bar-like member is in a lower position of said valve seat of said discharge valve in the maximum ascent position of said vertically movable member, the tip of said bar-like member protrudes with a gap along the periphery upwardly of said valve seat by pushing down said vertically movable member, and the liquid existing downstream of said discharge valve flows back upstream of said discharge valve via the gap when said vertically movable member is raised.
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward into said container;
a stem having an annular piston fitted to an interior of said cylinder and protruding from a lower part of an outer periphery, and so provided as to be vertically movable in an upward-biased state;
a push-down head, with a nozzle, disposed in continuation from an upper edge of said stem and so provided as to be vertically movable above said mounting cap; and a discharge valve provided with a valve member for closing a valve hole by placing it on a valve seat provided on an inner upper part of said stem, a liquid within said container being sucked into said cylinder through said suction valve, and a liquid within said cylinder being jetted out of said nozzle through said discharge valve from said stem by vertically moving a vertically movable member constructed of said stem and said push-down head, wherein a bar-like member with its upper edge part protruding into said stem is provided, a tip of said bar-like member is in a lower position of said valve seat of said discharge valve in the maximum ascent position of said vertically movable member, the tip of said bar-like member protrudes with a gap along the periphery upwardly of said valve seat by pushing down said vertically movable member, and the liquid existing downstream of said discharge valve flows back upstream of said discharge valve via the gap when said vertically movable member is raised.
7. ~A liquid jetting pump according to claim 6, wherein said suction valve is a suction valve including a valve member always biased in a valve hole closing direction by a resilient member.
8. ~A liquid jetting pump according to claim 6, wherein said suction valve is a suction valve including a suction valve member having a weight that is more than twice the weight of said discharge valve member.
9. ~A liquid jetting pump comprising:
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and having its lower edge part extending downward into said container;
a bar-like suction valve member having its lower surface closely fitted onto a valve seat provided in an inner lower part of said cylinder to form a suction valve and erecting upward so as to be vertically movable at a predetermined stroke;
a stem which has an annular seal portion with its inner peripheral edge liquid-tightly slidably fitted to the outer periphery of said member, protruding from a lower edge of the inner periphery and is vertically movable in an upward biased state;
an annular piston so fitted to a lower edge part of the outer periphery of said stem as to be vertically movably at a predetermined stroke, having its outer peripheral edge slidably attached to the inner surface of said cylinder and formed so that a through-hole holed in the lower edge part of said stem is openable and closable; and a push-down head, with a nozzle, provided in continuation from an upper edge of said stem so as to be vertically movable above said mounting cap, a liquid within said cylinder being led into said stem via said opened through-hole by pushing down said push-down head, and a liquid in said container being sucked up into said cylinder by negative-pressurizing the interior of said cylinder, wherein said liquid jetting pump comprises a discharge valve in which a valve hole formed in an inner upper part of said stem is closed by a valve member vertically moved by a liquid pressure, said suction valve member including a vertical groove for a liquid backflow that is formed along its outer periphery.
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and having its lower edge part extending downward into said container;
a bar-like suction valve member having its lower surface closely fitted onto a valve seat provided in an inner lower part of said cylinder to form a suction valve and erecting upward so as to be vertically movable at a predetermined stroke;
a stem which has an annular seal portion with its inner peripheral edge liquid-tightly slidably fitted to the outer periphery of said member, protruding from a lower edge of the inner periphery and is vertically movable in an upward biased state;
an annular piston so fitted to a lower edge part of the outer periphery of said stem as to be vertically movably at a predetermined stroke, having its outer peripheral edge slidably attached to the inner surface of said cylinder and formed so that a through-hole holed in the lower edge part of said stem is openable and closable; and a push-down head, with a nozzle, provided in continuation from an upper edge of said stem so as to be vertically movable above said mounting cap, a liquid within said cylinder being led into said stem via said opened through-hole by pushing down said push-down head, and a liquid in said container being sucked up into said cylinder by negative-pressurizing the interior of said cylinder, wherein said liquid jetting pump comprises a discharge valve in which a valve hole formed in an inner upper part of said stem is closed by a valve member vertically moved by a liquid pressure, said suction valve member including a vertical groove for a liquid backflow that is formed along its outer periphery.
10. A liquid jetting pump according to claim 9, wherein a vertical stroke of said discharge valve member is regulated so that Vb - Vc is equal to or larger than Va, wherein Va is the volumetric capacity of said nozzle, Vb is the volumetric capacity of the liquid passageway where said discharge valve member is vertically movable, and Vc is the volume of said discharge valve member.
11. A liquid jetting pump according to claim 9, wherein said suction valve member is a suction valve member always biased in a valve hole closing direction by a resilient member.
12. A liquid jetting pump comprising:
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward into said container;
a stem having its lower edge surface closed and provided so that said stem is vertically movable in a central portion within said cylinder in an upward biased state and including a discharge valve with a valve hole so holed in an upper part of the interior as to be closed by a valve member vertically moved by a liquid pressure;
an annular piston so fitted to a lower edge part of the outer periphery of said stem as to be vertically movable at a predetermined stroke, having its outer peripheral surface slidably fitted to the inner surface of said cylinder and so provided as to be make openable closable a through-hole holed in the lower edge part of said stem; and a head, with a nozzle, so provided in continuation from an upper edge of said stem as to be vertically movable above said mounting cap, a liquid within said cylinder being led into said stem via said opened through-hole and jetted out of said nozzle through a discharge valve by pushing down said push-down head, and the liquid within said container being sucked into said cylinder through a suction valve by negative-pressurizing the interior of said cylinder when said push-down head is raised, wherein said annular piston is always biased upward with respect to said stem, and said through-hole is so formed as to be closable only in a maximum ascent position of said stem.
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward into said container;
a stem having its lower edge surface closed and provided so that said stem is vertically movable in a central portion within said cylinder in an upward biased state and including a discharge valve with a valve hole so holed in an upper part of the interior as to be closed by a valve member vertically moved by a liquid pressure;
an annular piston so fitted to a lower edge part of the outer periphery of said stem as to be vertically movable at a predetermined stroke, having its outer peripheral surface slidably fitted to the inner surface of said cylinder and so provided as to be make openable closable a through-hole holed in the lower edge part of said stem; and a head, with a nozzle, so provided in continuation from an upper edge of said stem as to be vertically movable above said mounting cap, a liquid within said cylinder being led into said stem via said opened through-hole and jetted out of said nozzle through a discharge valve by pushing down said push-down head, and the liquid within said container being sucked into said cylinder through a suction valve by negative-pressurizing the interior of said cylinder when said push-down head is raised, wherein said annular piston is always biased upward with respect to said stem, and said through-hole is so formed as to be closable only in a maximum ascent position of said stem.
13. A liquid jetting pump according to claim 12, wherein a vertical stroke of said discharge valve member is regulated so that Vb - Vc is equal to or larger than Va, wherein Va is the volumetric capacity of said nozzle, Vb is the volumetric capacity of the liquid passageway where said discharge valve member is vertically movable, and Vc is the volume of said discharge valve member.
14. A liquid jetting pump comprising:
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward into said container;
a stem provided so that said stem is vertically movable in a central portion within said cylinder in an upward biased state and including a discharge valve with a valve hole so holed in an upper part of the interior as to be closed by a valve member vertically moved by a liquid pressure, said stem being provided with said discharge valve closed by said valve member vertically movable at a predetermined stroke in a lower part of the outer periphery of said stem;
an annular piston so fitted to a lower edge part of the outer periphery of said stem as to be vertically movable at a predetermined stroke, having its outer peripheral surface slidably fitted to the inner surface of said cylinder and so provided as to be make openable closable a through-hole holed in the peripheral wall of said stem; and a head, with a nozzle, so provided in continuation from an upper edge of said stem as to be vertically movable above said mounting cap, a liquid within said cylinder being led into said stem via said opened through-hole and jetted out of said nozzle through a discharge valve by pushing down s aid push-down head, and the liquid within said container being sucked into said cylinder through a suction valve by negative-pressurizing the interior of said cylinder when said push-down head is raised, wherein said liquid jetting pump comprises a check valve, provided in the lower edge part of said stem, for permitting a one-way flow into said cylinder from within said stem.
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward into said container;
a stem provided so that said stem is vertically movable in a central portion within said cylinder in an upward biased state and including a discharge valve with a valve hole so holed in an upper part of the interior as to be closed by a valve member vertically moved by a liquid pressure, said stem being provided with said discharge valve closed by said valve member vertically movable at a predetermined stroke in a lower part of the outer periphery of said stem;
an annular piston so fitted to a lower edge part of the outer periphery of said stem as to be vertically movable at a predetermined stroke, having its outer peripheral surface slidably fitted to the inner surface of said cylinder and so provided as to be make openable closable a through-hole holed in the peripheral wall of said stem; and a head, with a nozzle, so provided in continuation from an upper edge of said stem as to be vertically movable above said mounting cap, a liquid within said cylinder being led into said stem via said opened through-hole and jetted out of said nozzle through a discharge valve by pushing down s aid push-down head, and the liquid within said container being sucked into said cylinder through a suction valve by negative-pressurizing the interior of said cylinder when said push-down head is raised, wherein said liquid jetting pump comprises a check valve, provided in the lower edge part of said stem, for permitting a one-way flow into said cylinder from within said stem.
15. A liquid jetting pump according to claim 14, wherein a vertical stroke of said discharge valve member is regulated so that Vb - Vc is equal to or larger than Va, wherein Va is the volumetric capacity of said nozzle, Vb is the volumetric capacity of the liquid passageway where said discharge valve member is vertically movable, and Vc is the volume of said discharge valve member.
16. A liquid jetting pump according to claim 14, wherein said check valve is a check valve for integrally and vertically movably supporting a valve plate closing the lower surface of a valve hole holed in a bottom wall of said stem by use of a plurality of bar-like elastic portions protruding from an inner surface of a cylindrical proximal portion fixedly fitted to the lower edge of said stem, wherein said discharge valve is a discharge valve for integrally and vertically movably supporting a valve plate closing an upper surface of a valve hole holed in the lower edge part of the interior of said cylinder by use of a plurality of bar-like elastic portions integrally protruding from the inner surface of a cylindrical proximal portion fixedly fitted to the lower edge part of the interior of said cylinder, and a pressure required for opening said check valve is smaller than a pressure required for opening said suction valve.
17. A liquid jetting pump according to claim 16, wherein engagement protrusions for regulating a stroke of the vertical movement of each valve plate are protruded in a predetermined position under said check valve plate and in a predetermined position above said suction valve plate.
18. A pump type liquid discharge container comprising:
a mounting cylinder attached to an outer surface of a container neck portion;
a cylinder having a suction valve provided on an inner surface of a bottom portion and extending downward into said container from said mounting cylinder;
an operating member, with a discharge valve, erected from within said cylinder by biasing it upward; and a push-down head, with a nozzle, provided at an upper edge of said operating member, a liquid in the container being sucked into said cylinder and a liquid in the cylinder being jetted out of the nozzle by vertical movement of said operating member, wherein a suction valve in a bottom portion within said cylinder is constructed of a self-closing valve with a valve hole resiliently closed by a valve member, said operating member is constructed of said push-down head, a stem having a small-diameter cylinder extending downward through an outward flange from a lower edge of a cylindrical portion extending downwards into said cylinder while fixing its upper edge part to said push-down head, a lower member provided with a large-diameter board portion at a lower edge of a bar-like portion extending downward while fixing its upper part into said cylindrical portion and provided vertically with a passageway forming groove in its outer surface and a cylindrical piston including an inner cylindrical portion fitted to the outer surface of said bar-like portion so as to be vertically movable between said outward flange of said stem and said board-like portion, said cylindrical piston is formed in a triple cylindrical shape connected through a flange, an outer cylindrical portion being water-tightly fitted to a wall surface within said cylinder and an upper part of a middle cylindrical portion being water-tightly fitted to an inner wall surface of said small-diameter cylinder, the interior of the upper part of said middle cylindrical portion communicates with said passageway forming groove, a discharge valve is formed of the lower edge part of said middle cylindrical portion and of the outer peripheral part of said board-like portion, and a friction resistance of said cylindrical piston with respect to the inner wall surface of said cylinder is set larger than a friction resistance with respect to said bar-like portion and said small-diameter cylinder as well.
a mounting cylinder attached to an outer surface of a container neck portion;
a cylinder having a suction valve provided on an inner surface of a bottom portion and extending downward into said container from said mounting cylinder;
an operating member, with a discharge valve, erected from within said cylinder by biasing it upward; and a push-down head, with a nozzle, provided at an upper edge of said operating member, a liquid in the container being sucked into said cylinder and a liquid in the cylinder being jetted out of the nozzle by vertical movement of said operating member, wherein a suction valve in a bottom portion within said cylinder is constructed of a self-closing valve with a valve hole resiliently closed by a valve member, said operating member is constructed of said push-down head, a stem having a small-diameter cylinder extending downward through an outward flange from a lower edge of a cylindrical portion extending downwards into said cylinder while fixing its upper edge part to said push-down head, a lower member provided with a large-diameter board portion at a lower edge of a bar-like portion extending downward while fixing its upper part into said cylindrical portion and provided vertically with a passageway forming groove in its outer surface and a cylindrical piston including an inner cylindrical portion fitted to the outer surface of said bar-like portion so as to be vertically movable between said outward flange of said stem and said board-like portion, said cylindrical piston is formed in a triple cylindrical shape connected through a flange, an outer cylindrical portion being water-tightly fitted to a wall surface within said cylinder and an upper part of a middle cylindrical portion being water-tightly fitted to an inner wall surface of said small-diameter cylinder, the interior of the upper part of said middle cylindrical portion communicates with said passageway forming groove, a discharge valve is formed of the lower edge part of said middle cylindrical portion and of the outer peripheral part of said board-like portion, and a friction resistance of said cylindrical piston with respect to the inner wall surface of said cylinder is set larger than a friction resistance with respect to said bar-like portion and said small-diameter cylinder as well.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2485237A CA2485237C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
| CA2665953A CA2665953C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7-31358 | 1995-01-27 | ||
| JP7-31359 | 1995-01-27 | ||
| JP7031359A JPH08198302A (en) | 1995-01-27 | 1995-01-27 | Liquid spray pump |
| JP7031358A JPH08198303A (en) | 1995-01-27 | 1995-01-27 | Liquid spray pump |
| JP09810995A JP3569343B2 (en) | 1995-03-29 | 1995-03-29 | Liquid ejection pump |
| JP7-98109 | 1995-03-29 | ||
| CA002186614A CA2186614C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002186614A Division CA2186614C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2665953A Division CA2665953C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
| CA2485237A Division CA2485237C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2440737A1 true CA2440737A1 (en) | 1996-08-01 |
| CA2440737C CA2440737C (en) | 2010-08-24 |
Family
ID=27287295
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2485237A Expired - Lifetime CA2485237C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
| CA002426367A Expired - Lifetime CA2426367C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
| CA002186614A Expired - Lifetime CA2186614C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
| CA2665953A Expired - Lifetime CA2665953C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
| CA2440737A Expired - Lifetime CA2440737C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2485237A Expired - Lifetime CA2485237C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
| CA002426367A Expired - Lifetime CA2426367C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
| CA002186614A Expired - Lifetime CA2186614C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
| CA2665953A Expired - Lifetime CA2665953C (en) | 1995-01-27 | 1996-01-26 | Liquid jet pump |
Country Status (8)
| Country | Link |
|---|---|
| US (5) | US5924604A (en) |
| EP (4) | EP1543886B1 (en) |
| KR (1) | KR100311593B1 (en) |
| CN (4) | CN100375657C (en) |
| AU (1) | AU717120B2 (en) |
| CA (5) | CA2485237C (en) |
| DE (4) | DE69638012D1 (en) |
| WO (1) | WO1996022924A1 (en) |
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1996
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- 1996-01-26 EP EP05004286A patent/EP1543886B1/en not_active Expired - Lifetime
- 1996-01-26 EP EP01205079A patent/EP1210983B1/en not_active Expired - Lifetime
- 1996-01-26 DE DE69638012T patent/DE69638012D1/en not_active Expired - Lifetime
- 1996-01-26 CN CNB2005100517860A patent/CN100375657C/en not_active Expired - Lifetime
- 1996-01-26 CN CNB021199353A patent/CN100402157C/en not_active Expired - Lifetime
- 1996-01-26 US US08/716,174 patent/US5924604A/en not_active Expired - Lifetime
- 1996-01-26 KR KR1019960705313A patent/KR100311593B1/en not_active IP Right Cessation
- 1996-01-26 CN CN96190063A patent/CN1098200C/en not_active Expired - Lifetime
- 1996-01-26 DE DE69637311T patent/DE69637311T2/en not_active Expired - Lifetime
- 1996-01-26 WO PCT/JP1996/000156 patent/WO1996022924A1/en active IP Right Grant
- 1996-01-26 CA CA002426367A patent/CA2426367C/en not_active Expired - Lifetime
- 1996-01-26 DE DE69631269T patent/DE69631269T2/en not_active Expired - Lifetime
- 1996-01-26 EP EP05004287A patent/EP1579923B1/en not_active Expired - Lifetime
- 1996-01-26 CA CA002186614A patent/CA2186614C/en not_active Expired - Lifetime
- 1996-01-26 CA CA2665953A patent/CA2665953C/en not_active Expired - Lifetime
- 1996-01-26 EP EP96901130A patent/EP0757004B1/en not_active Expired - Lifetime
- 1996-01-26 CA CA2440737A patent/CA2440737C/en not_active Expired - Lifetime
- 1996-01-26 AU AU44965/96A patent/AU717120B2/en not_active Expired
- 1996-01-26 DE DE69635938T patent/DE69635938T2/en not_active Expired - Lifetime
-
1999
- 1999-01-08 US US09/227,137 patent/US6119902A/en not_active Expired - Lifetime
-
2001
- 2001-12-27 US US10/026,907 patent/US6702156B2/en not_active Expired - Fee Related
-
2002
- 2002-05-15 CN CNB021199345A patent/CN1232356C/en not_active Expired - Lifetime
-
2004
- 2004-01-15 US US10/757,396 patent/US6938803B2/en not_active Expired - Fee Related
-
2005
- 2005-03-30 US US11/093,224 patent/US7472809B2/en not_active Expired - Fee Related
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