WO1990013497A1 - Pompe a double effet - Google Patents

Pompe a double effet Download PDF

Info

Publication number
WO1990013497A1
WO1990013497A1 PCT/US1989/001845 US8901845W WO9013497A1 WO 1990013497 A1 WO1990013497 A1 WO 1990013497A1 US 8901845 W US8901845 W US 8901845W WO 9013497 A1 WO9013497 A1 WO 9013497A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
pump chamber
product
port means
supplemental
Prior art date
Application number
PCT/US1989/001845
Other languages
English (en)
Inventor
Lewis A. Micallef
Original Assignee
Leeds And Micallef
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 Leeds And Micallef filed Critical Leeds And Micallef
Priority to PCT/US1989/001845 priority Critical patent/WO1990013497A1/fr
Priority to EP19890905278 priority patent/EP0424396A4/en
Priority to CA002015860A priority patent/CA2015860A1/fr
Publication of WO1990013497A1 publication Critical patent/WO1990013497A1/fr

Links

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
    • B05B11/01—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
    • B05B11/1088—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 the pump being a double-acting pump

Definitions

  • trigger sprayers and particularly double acting trigger sprayers has been clearly established in the packaging industry.
  • the object has always been to develop a trigger sprayer that is cost effective and possesses a more forceful spray and greater output per stroke which could be readily adjusted.
  • trigger pumps should preferably not be restricted to particular products to be dispensed and should possess the ability to dispense petroleum based products. Pumps of this variety because of consumer preference, must possess eye appeal to be commercially feasible.
  • a principal object of the present invention is to provide a cost effective, reliable, double acting trigger actuated piston pump with the foregoing characteristics that permits a full stroke with relatively more leverage but with comfort for high volume delivery during both the pressure and suction strokes at relatively high pressure without concern over product compatibility while being a shipper which lends to its commercial acceptability.
  • Figure 1 is a side elevational view of the double acting trigger actuated pump of this invention at the start of the pressure stroke with certain parts broken and removed and sectioned;
  • Figure 2 is a similar view during the pressure stroke with the bottle head space cable of being vented with product being dispensed from the pump chamber;
  • Figure 3 is a similar view during the suction stroke with the product drawn into the primary pump chamber with the product being dispensed from the supplemental pump chamber.
  • a double acting trigger actuated pump 10 is shown associated with the threaded neck 12 of container or bottle 14 containing the product to be dispensed.
  • an internally threaded cap 16 extends across the opening of the neck 12 and threadedly mates therewith in securing the pump 10 on bottle 14.
  • the cap 16 secures the pump base 18 and seals it across the opening of the neck 12 by engaging the circumferentially extending lip 20.
  • Base 18 includes a downwardly depending boss 22 which supports dip tube 24, which communicates with passage 26 for product flow.
  • the base is also provided with vent opening 28 cooperating in venting the head space of the bottle 14.
  • the pump 10 is provided with an outer shell 30 and a concentric inner shell 32 both supported on base 18 and both having a closed inner end 30a and 32a respectfully.
  • the outer shell 30 and inner shell 32 define a product chamber 34 which communicates with passage 26 for reception of product to be dispensed.
  • the vent opening 28 extends through the inner shell 32 for eventual communication with the atmosphere as will be described shortly.
  • the inner end 32a of inner shell 32 is provided with a valve seat 36 which receives a ball check valve 38 for closing off pump chamber 40 within inner shell 32 and isolating it from the product chamber 34 during the pressure stroke.
  • the valve 38 will open to permit product to enter the primary pump chamber 40 from the product chamber 34 during the section stroke.
  • the outer open ends of the outer shell 30 and inner shell 32 are provided with a retaining ring 41 which retains a spaced concentrical relationship of the shell parts and at the same time cooperates in maintaining the coaxial relationship of the piston 42. More importantly, this retaining ring 41 cooperates with the piston 42 and providing a supplemental pump chamber which contributes to the double action of the pump 10.
  • the piston 42 includes an inner double piston seal 44 having a pair of sealing lips 46 and 48 which form sliding seals with the interior of the inner shell 32.
  • the piston 42 is also provided with a coaxial bore 50 in the piston rod 52.
  • the piston rod is provided with a sealing lip 53 which engages with the retaining ring 41 in sealing the vent opening 28 when the pump is in its shipping condition as depicted in Figure 1.
  • a piston return spring 49 is biased against the double piston seal 44 and the inner shell wall 32a. It is also contemplated that this spring could be readily externally mounted.
  • the outer end 54 of the piston rod 52 mounts a discharge nozzle 56 which may be of any suitable design to generate the desired discharge patterns.
  • the double piston seal 44 is provided with a valve seat 58 coaxial with the bore 50 in the piston rod and cooperates with a ball check valve 60.
  • the valve 60 assumes a closed position during the suction stroke and unseats during the pressure stroke.
  • a trigger mechanism 62 is employed.
  • the trigger mechanism 62 includes a trigger 64 suitably pivoted at 65 to the trigger support 66 which may be integral with the outer shell 30.
  • the trigger 64 is provided with an actuator surface 68 designed to engage piston actuated plate 70 extending laterally from piston rod 52.
  • the zone of engagement of the trigger surface 68 and the plate 70 is of a sliding nature to provide as near as possible, a direction of force parallel to the axis of the piston rod 52 as the trigger 64 is pulled and the piston 42 is moved axially from its retracted position to its forward position during the pressure stroke.
  • a supplemental pump chamber 74 is defined between exterior surfaces of the piston rod 52 and internal surfaces of the inner shell 32 and the internal sealing lip 76 of the retaining ring 41. Access to the supplemental pump chamber 74 is obtained through lateral passages 78 at the forward end of the piston rod 52 and a clearance 80 between forward circumferentially extending surfaces of the piston rod 52 and internal surfaces of the inner shell 32.
  • the trigger mechanism 62 is released, and the spring 49 biased against inner shell wall 32a and double piston seal 44, will urge the piston 42 to its retracted position as shown schematically in Figure 3.
  • the valve 60 will close against its seal 58 and inlet valve 38 will open.
  • the product in the container 14 will be forced up dip tube 24 into passage 26 and chamber 34 passed the valve 38 into primary pump chamber 40.
  • product in the supplemental pump chamber 74 will be forced through the clearance 80 into lateral passages 78 through bore 50 and out through the nozzle 56.
  • the piston 42 will approach its fully retracted position at which the desired amount of product will be pulled into primary pump chamber 40 and the product in supplemental pump chamber 74 will be discharged.

Abstract

Une pompe à double effet munie de déclencheur est disposée sur un récipient. Le problème des pulvérisateurs à déclencheur étant un manque de force et de rendement par coup, ledit disposisif comprend une pompe à piston améliorée, à double effet et actionnée par un déclencheur, qui présente une puissance de levier accrue par coup. La pompe (10) comprend un cylindre (40) doté d'un piston (42). Un joint à piston double (44) situé à l'extrémité intérieure dudit piston (42) comprend une soupape de sortie (60) co-axiale à un alésage longitudinal (5O) disposé dans le piston (42). Une chambre d'aspiration supplémentaire (74) qui communique également avec l'alésage (50) est définie entre les surfaces extérieures du piston (42) et les surfaces intérieures du cylindre (40) ainsi que le joint à piston double (44) et un anneau de blocage à l'arrière (41).
PCT/US1989/001845 1989-05-01 1989-05-01 Pompe a double effet WO1990013497A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/US1989/001845 WO1990013497A1 (fr) 1989-05-01 1989-05-01 Pompe a double effet
EP19890905278 EP0424396A4 (en) 1989-05-01 1989-05-01 Double acting pump
CA002015860A CA2015860A1 (fr) 1989-05-01 1990-05-01 Pompe a double effet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1989/001845 WO1990013497A1 (fr) 1989-05-01 1989-05-01 Pompe a double effet

Publications (1)

Publication Number Publication Date
WO1990013497A1 true WO1990013497A1 (fr) 1990-11-15

Family

ID=22214972

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1989/001845 WO1990013497A1 (fr) 1989-05-01 1989-05-01 Pompe a double effet

Country Status (3)

Country Link
EP (1) EP0424396A4 (fr)
CA (1) CA2015860A1 (fr)
WO (1) WO1990013497A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6468523B1 (en) 1998-11-02 2002-10-22 Monsanto Technology Llc Polypeptide compositions toxic to diabrotic insects, and methods of use
WO2004026489A1 (fr) * 2002-09-23 2004-04-01 Pfizer Health Ab Appareil et procede de distribution pour produits liquides, notamment pour produits medicaux
US7070071B2 (en) 2002-09-23 2006-07-04 Agouron Pharmaceuticals, Inc. Dispensing apparatus and method for liquid products, particularly medicinal products
CN107117381A (zh) * 2017-06-20 2017-09-01 上海帝凡奇机电设备有限公司 一种双泵双作用手扣式喷雾器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531224A (en) * 1969-04-07 1970-09-29 Cook Chem Co Hand pump having free floating valve
US3583605A (en) * 1969-01-17 1971-06-08 Diamond Int Corp Liquid dispensing pump
US4591077A (en) * 1985-01-28 1986-05-27 Corsette Douglas Frank Continuous discharge dispenser
US4646969A (en) * 1982-11-19 1987-03-03 Ceskoslovenska Akademie Ved Double acting mechanical pump liquid atomizer
US4826052A (en) * 1987-07-06 1989-05-02 Leeds And Micallef Trigger pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR479746A (fr) * 1915-08-30 1916-05-03 Alfred William French Perfectionnements apportés aux appareils à vaporiser un jet de liquide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3583605A (en) * 1969-01-17 1971-06-08 Diamond Int Corp Liquid dispensing pump
US3531224A (en) * 1969-04-07 1970-09-29 Cook Chem Co Hand pump having free floating valve
US4646969A (en) * 1982-11-19 1987-03-03 Ceskoslovenska Akademie Ved Double acting mechanical pump liquid atomizer
US4591077A (en) * 1985-01-28 1986-05-27 Corsette Douglas Frank Continuous discharge dispenser
US4826052A (en) * 1987-07-06 1989-05-02 Leeds And Micallef Trigger pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0424396A4 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6468523B1 (en) 1998-11-02 2002-10-22 Monsanto Technology Llc Polypeptide compositions toxic to diabrotic insects, and methods of use
US7022897B2 (en) 1998-11-02 2006-04-04 Monsanto Technology Llc Polynucleotides encoding Δ-endotoxins toxic to lepidoptera and coleoptera, and method of use
WO2004026489A1 (fr) * 2002-09-23 2004-04-01 Pfizer Health Ab Appareil et procede de distribution pour produits liquides, notamment pour produits medicaux
US7070071B2 (en) 2002-09-23 2006-07-04 Agouron Pharmaceuticals, Inc. Dispensing apparatus and method for liquid products, particularly medicinal products
CN107117381A (zh) * 2017-06-20 2017-09-01 上海帝凡奇机电设备有限公司 一种双泵双作用手扣式喷雾器

Also Published As

Publication number Publication date
EP0424396A1 (fr) 1991-05-02
EP0424396A4 (en) 1991-12-11
CA2015860A1 (fr) 1990-11-01

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