EP1075874A2 - Distributeur à pompe comprenant un piston vertical muni d'un siège moulé pour la valve de sortie - Google Patents
Distributeur à pompe comprenant un piston vertical muni d'un siège moulé pour la valve de sortie Download PDFInfo
- Publication number
- EP1075874A2 EP1075874A2 EP00116250A EP00116250A EP1075874A2 EP 1075874 A2 EP1075874 A2 EP 1075874A2 EP 00116250 A EP00116250 A EP 00116250A EP 00116250 A EP00116250 A EP 00116250A EP 1075874 A2 EP1075874 A2 EP 1075874A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lip
- plunger
- ball
- barrel
- compartment
- 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.)
- Withdrawn
Links
Images
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
- 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
Definitions
- This invention relates to a pump dispenser. More specifically, this invention relates to a pump dispenser in which a plunger reciprocates inside a hollow cylindrical body.
- the plunger includes an outlet check valve with a molded seat.
- the U.S. patent 3,062,416 to Cooprider discloses a liquid dispenser comprising a hollow body and a one-piece plunger including an actuator/piston.
- the piston has an enlarged head at its lower end inside the hollow body.
- Inlet and outlet check valves are provided and a spring urges the plunger upward.
- the present invention is, of course, defined in the claim language. In summary, it relates to the annular lip and the structure of the plunger thereadjacent.
- the invention is a plunger having a longitudinal axis with a piston head at its lower end and an actuator at its upper end, the upper end including an outlet check valve compartment defined by a hollow cylindrical barrel extending axially downward in the actuator.
- the barrel has at its lower end a downward annular lip inclined toward the axis, the lip having its inner end defining an opening and adapted to serve as a seat for a ball check in the compartment.
- the tubular plunger has inward ribs formed along its interior, the ribs being spaced outward from the lip and extending radially inward above the lips to meet and reinforce the barrel, whereby the lips are adapted to flex outward to permit forceful passage of said ball in assembly.
- a pump dispenser embodying the invention is generally designated 10 in Fig. 1. It comprises a hollow cylindrical body 12 and a cooperating one-piece plunger 14. Rotatably surrounding the upper end of the body is the threaded closure 16.
- the body 12 is essentially cup-shaped including a bottom wall 18 which is centrally formed with an inlet opening 20 surrounded by a downward tubular connector 22 receiving a dip tube 21. Above the opening 20 is formed an upward bevelled annular seat 24. A cylindrical side wall 26 extends upward from the perimeter of bottom wall 18 and terminates in a circular mouth 26A.
- the sidewall 26 (Fig. 1) extends upward to include a vent opening 27 and a tapered zone 28 at which the wall flares slightly outward on the inside of the body at surface 30 (Fig. 5) and is thickened as the upper end of the body 12 is approached.
- the side wall Above the tapered zone 28 the side wall is formed on the inside of the body with an annular radial shoulder 32. From the periphery of the shoulder the side wall extends upward in a cylindrical sleeve 34. Outward from a midpoint of the sleeve portion extends an integral annular flange 36, and spaced above the flange the cylindrical sleeve is formed with an outward peripheral bump 38.
- the closure 16 is a threaded cap comprising a sidewall 40 and a top wall 42 which is formed with an aperture 44 to receive the cylindrical sleeve 34 at the upper end of the body. In installation, there is sufficient "give" in the bump 38 and the margin of the aperture 44 to permit the top wall 42 to snap by the bump so that the cap is entrapped between the bump 38 and the flange 36.
- the cap is loosely enough disposed on the sleeve 34 so that it can spin as it is screwed onto the finish (not shown) of a container.
- the flange 36 will, of course, sit on the top of the finish and be sealingly compressed thereagainst when the cap is screwed tight.
- the plunger 14 comprises an elongate tubular piston 50.
- the piston 50 is defined by a stem 51 and an enlarged tubular piston head 52. Intermediate the head and the stem there is formed a narrow annular upward shoulder 54.
- the lower end of the head is formed with an annular seal 56 sealingly engaging the inside of the side wall 26 of the body 12. Inside, above the seal 56, the head presents an annular downward face 58.
- the plunger 14 is tubular, formed with an axial passage 64 which may be provided with integral inward ribs 66.
- the actuator 70 is formed therein with a check valve compartment 72 (Fig. 4) defined by a recess in the actuator and a downward barrel 73 at the lower end of which is an inward annular lip 74.
- the inner end of the lip comprises a discharge opening 75 and the upper surface of the lip is adapted to serve as a seat for the ball 81.
- a central ball stop 76 extends downward from the actuator head into the upper portion of the compartment 72.
- a laterally extending portion of the actuator 70 forms the spout 78 (Fig. 5) having a discharge passage 80.
- the ribs 66 are formed along the interior of the tubular plunger stem 51. In the area of the lip 74, the ribs 66 are spaced outward from the lip whereby the lip is free to flex outward to permit passage of the ball as explained in assembly.
- the ribs have upper inward radial portions 66A (Fig. 4) which meet and reinforce the barrel 73 in a cylindrical portion of the compartment 72.
- the inner face of the seat formed by the preferred form of lip has an angle a (Fig. 4) in a range of 10 degrees to about 40 degrees with the axis of the plunger. Preferably angle a is about 25 degrees.
- the opening for the ball is 0.144 inch while the diameter of the ball 81 is .156 inch.
- the inner edge 75A of the lip may be rounded with a radius in the range of .002 inch to .020 inch. Preferably the radius is about .005 inch.
- Both the body 12 and the plunger 14 are molded of a plastic (the body may be polypropylene, while the plunger may be high density polyethylene) which is resilient in thin sections and rigid in thick section. The resilience in thin sections is used to advantage in the lip 74.
- the discharge valving for the dispenser comprises the inlet check ball 81 which seats on seat 24 at the lower end of the body 12, and the discharge check ball 82 which seats on the inward lips 74 at the upper end of the plunger.
- the ball 82 is installed by being forcibly inserted through the lip 74 from below.
- a spring 84 is compressively disposed between the annular face 58 and the bottom wall 18 of the body and urges the plunger upward. Flap 100, molded with the body 12, serves as a stop, limiting the upward travel of the plunger when the shoulder 54 hits it.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36987299A | 1999-08-09 | 1999-08-09 | |
US369872 | 1999-08-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1075874A2 true EP1075874A2 (fr) | 2001-02-14 |
EP1075874A3 EP1075874A3 (fr) | 2003-05-21 |
Family
ID=23457268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00116250A Withdrawn EP1075874A3 (fr) | 1999-08-09 | 2000-08-08 | Distributeur à pompe comprenant un piston vertical muni d'un siège moulé pour la valve de sortie |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1075874A3 (fr) |
JP (1) | JP2001070844A (fr) |
AU (1) | AU5052200A (fr) |
CA (1) | CA2314600A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008027987A1 (de) * | 2008-03-04 | 2009-09-17 | Kist-Europe Forschungsgesellschaft Mbh | Dosierungsvorrichtung |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3062416A (en) | 1958-12-01 | 1962-11-06 | Drackett Co | Liquid dispenser |
US6053371A (en) | 1998-05-15 | 2000-04-25 | Owens-Illinois Closure Inc. | Pump dispenser and method for making same |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3128018A (en) * | 1961-07-07 | 1964-04-07 | Drackett Co | Fluid dispensing pump with sealing means |
JP3668311B2 (ja) * | 1996-02-16 | 2005-07-06 | 株式会社吉野工業所 | 樹脂製ポンプにおける逆止弁構造 |
-
2000
- 2000-07-27 CA CA002314600A patent/CA2314600A1/fr not_active Abandoned
- 2000-08-03 AU AU50522/00A patent/AU5052200A/en not_active Abandoned
- 2000-08-08 EP EP00116250A patent/EP1075874A3/fr not_active Withdrawn
- 2000-08-09 JP JP2000240823A patent/JP2001070844A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3062416A (en) | 1958-12-01 | 1962-11-06 | Drackett Co | Liquid dispenser |
US6053371A (en) | 1998-05-15 | 2000-04-25 | Owens-Illinois Closure Inc. | Pump dispenser and method for making same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008027987A1 (de) * | 2008-03-04 | 2009-09-17 | Kist-Europe Forschungsgesellschaft Mbh | Dosierungsvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
CA2314600A1 (fr) | 2001-02-09 |
JP2001070844A (ja) | 2001-03-21 |
AU5052200A (en) | 2001-02-15 |
EP1075874A3 (fr) | 2003-05-21 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
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AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB IT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20031122 |