EP0749785A1 - Pulvérisateur à pompe actionné par une gâchette - Google Patents

Pulvérisateur à pompe actionné par une gâchette Download PDF

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Publication number
EP0749785A1
EP0749785A1 EP96303263A EP96303263A EP0749785A1 EP 0749785 A1 EP0749785 A1 EP 0749785A1 EP 96303263 A EP96303263 A EP 96303263A EP 96303263 A EP96303263 A EP 96303263A EP 0749785 A1 EP0749785 A1 EP 0749785A1
Authority
EP
European Patent Office
Prior art keywords
pump
stem
shroud
pump body
sprayer according
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Withdrawn
Application number
EP96303263A
Other languages
German (de)
English (en)
Inventor
Douglas B. Dobbs
Ronald Wadsworth
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.)
Silgan Dispensing Systems Corp
Original Assignee
Calmar Inc
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 Calmar Inc filed Critical Calmar Inc
Publication of EP0749785A1 publication Critical patent/EP0749785A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1681—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, sliding valve or cock and a lift valve
    • 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
    • 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
    • B05B11/1009—Piston pumps actuated by a lever
    • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke

Definitions

  • This invention relates generally to a trigger sprayer having an adjustable spray control which is operated remotely from the spray nozzle.
  • Trigger pump sprayers of various types have been developed for the discharge of liquids from containers to which the trigger sprayer is mounted.
  • the wide variety of liquids to be dispensed may include many household products, such as window cleaners, oven cleaners, bathtub and tile cleaners, furniture cleaners, automotive cleaners, etc.
  • the trigger sprayer typically has a sprayer nozzle capable of adjusting the spray upon nozzle rotation between off, spray and stream positions, or upon rotation into variable spray positions.
  • spin mechanics of known types for producing a vortex of the liquid product are formed on an inner surface of the nozzle cap wall and/or on a confronting surface of a stem or other element cooperating with such wall.
  • the nozzle cap is either rotated about its axis without axial shifting movement into selected discharge positions, or the nozzle cap is rotated to shift the cap axially for varying the conicity of the discharge.
  • an elongated stem extends along the discharge barrel with its downstream end surrounded by a fixed nozzle, that end being formed with spin mechanics in cooperation with the nozzle.
  • the stem is rotatable about its axis without axial movement by the provision of a handle which may be in the form of a thumbwheel or the like mounted at or near its opposite end, and accessible from outside the pump body.
  • spin mechanics the stem is manually rotated between off, stream and spray positions upon actuating the thumb control wheel at a location remote from the nozzle.
  • a cover shroud surrounding the pump body has an opening through which the thumb wheel protrudes for manual access external to the shroud.
  • the elongated stem is shifted along its axis upon manual rotation of the thumb control wheel for adjusting the spray pattern relative to the fixed nozzle.
  • Similar spin mechanics may be provided at the downstream end of the stem, as in the first embodiment, or spray mechanics may be formed at the inner wall of the fixed nozzle confronting the downstream end of the stem.
  • Indicia may be provided on the thumbwheel and on an adjacent wall portion of the shroud for indicating a selected spray mode at the remote location from the fixed nozzle.
  • the trigger actuated pump sprayer of Fig. 1 is similar in structure and 1 operation to that of U.S. Patent 4,747,523, commonly owned herewith.
  • the trigger sprayer comprises a pump body 10 mountable on neck 11 of a container product to be dispensed.
  • the pump body is mounted in place by a threaded closure cap 12, and an inner cylinder 13 of the pump body supports a tube retainer 14 which suspends a dip tube 15 extending into the interior of the container.
  • a gasket seal 16 surrounds the tube retainer and is interposed between the lower edge of the pump body and the upper edge of the container neck as shown.
  • Cylinder 13 defines an Inlet passage 17 valve controlled by inlet ball check valve 18 or the like.
  • the pump body extends transversely above closure cap 12 and has a pump cylinder 19 and a manually reciprocable pump piston 21 defining, together with the pump cylinder, a variable volume pump chamber 22.
  • a piston return spring urges the piston outwardly of its cylinder, and the cylinder has an inlet port 24 communicating with the inlet passage, and an outlet port 25 communicating with a discharge passage 26 defined by a discharge barrel or tubular outlet member 27.
  • a trigger actuator 28 is hinged to the pump body in some suitable manner and has a tup 29 bearing against an outer circular rim 31 of the piston for manual actuation of the pump against the force of the return spring.
  • a nozzle cap 32 is mounted about the downstream or forward end of the discharge barrel as by snapping an internal groove 33 of the cap over a rib 34 formed on the discharge barrel.
  • the nozzle cap is fixedly mounted in place against a rotation by the provision of either a tight frictional fit or by some other suitable means.
  • the pump body may be enclosed by a shroud cover 35 having a top wall 36, side walls 37 (only one shown) and a closed rear wall 38 having a substantially horizontal wall portion 39 for resting on the crook of the operator's and during the pump spraying operation.
  • Upper wall 36 may have an extension 41 projecting into an open groove 42 formed in the nozzle cap to assure against nozzle rotation.
  • An elongated solid stem 43 extends along the discharge passage concentrically within the discharge barrel.
  • One end 44 of the stem extends into inner cylindrical skirt 45 of the nozzle, and opposing end 46 of the stem extends outwardly through a suitable opening 47 in the pump body.
  • a ring 48 formed on the stem provides a seal against leakage through opening 47.
  • a handle 49 in the form of a thumb wheel, knob or the like, is fixedly mounted to end 46 of the stem in some suitable manner as by the provision of a pin 51 for rotating stem 43 without axial displacement upon turning of the handle by the operator.
  • the handle projects through an opening 40 located at the joinder between shroud walls 36 and 38 for easy access by the operator.
  • the discharge passage is valve controlled by the provision of a suitable valve such as a ring valve 50 anchored to the stem and bearing against the inner wall of the discharge barrel forming a valve seat.
  • a suitable valve such as a ring valve 50 anchored to the stem and bearing against the inner wall of the discharge barrel forming a valve seat.
  • Skirt 45 of the nozzle cap has at least one, and in the example illustrated, three, equally spaced open grooves 52 forming internal flow passages at its inner wall.
  • End 44 of the stem has a plurality of equally spaced longitudinal grooves 53 forming external flow passages in its outer periphery, at least two of such grooves being required, and six of such grooves being illustrated in the drawings, although even numbers of grooves 53 other than two or six may be provided without departing from the invention.
  • End wall 54 of the stem has a central depression 55 forming a spin chamber with a confronting wall 30 of the nozzle cap shown in Fig. 1 which wall contains a discharge orifice 56 coaxial with the spin chamber.
  • a set of three equally spaced radial channels 57, and a set of three equally spaced tangential channels 58 are likewise formed in end wall 54, the radial and tangential channels being alternatively disposed, as shown in Figs. 2 to 5.
  • stem 43 is rotated about its axis without axial displacement upon rotation in one direction or the other of thumbwheel 49.
  • the discharge is closed when longitudinal grooves 52 and 53 are mismatched as shown in the off position of Fig. 3.
  • the discharge is placed in an open position for stream discharge shown in Fig. 4.
  • the discharge is placed in an open position for spraying as shown in Fig. 5 as product passing through the tangentials is swirled in the spin chamber before discharging through orifice 56 in the form of a fine mist spray.
  • top wall 36 of the shroud may have a marking M forming indicia together with a "spray” notation on thumbwheel 49 for indicating the spray mode selected upon thumbwheel rotation.
  • marking M forming indicia together with a "spray” notation on thumbwheel 49 for indicating the spray mode selected upon thumbwheel rotation.
  • "off" and “stream” indicia may be similarly provided.
  • the trigger actuated sprayer of Fig. 7 has like parts to that of Fig. 1 which are identified by like reference numerals, and has an elongated stem 59 formed at its one end 44 with similar spin mechanics details of Fig. 2 cooperating with the details of skirt 45 of the nozzle cap, as described with reference to Figs. 2 to 5, except that radial channels 57 are eliminated. Also, opposing end 46 of the stem is rectangular or otherwise out-of-round for keying within a complementarily shaped receptacle 61 formed in the shroud.
  • end 46 may be externally threaded as an 62 for threaded engagement with the internal threads of thumbwheel 49, the opposing surfaces of the thumbwheel bearing against a downturned wall 63 of the shroud and a confronting edge 64 of receptacle 61.
  • stem 59 is shifted without rotation from its Fig. 7 position to that of Fig. 8 for adjusting the spray from, for example, a fell spray pattern of Fig. 7, in which end 54 contacts end wall 30, to a less divergent spray pattern of Fig. 8 in which end 54 is spaced from end wall 30.
  • longitudinal grooves 52 are matched with longitudinal grooves 53 of tangentials 58 in the position shown in Fig. 3 at which the spin chamber 55 is closed by the confronting end wall 32 of the nozzle cap such that product flowing through the discharge passage and into the spin chamber is swirled before exiting the discharge orifice as a wide divergent spray.
  • Fig. 7 longitudinal grooves 52 are matched with longitudinal grooves 53 of tangentials 58 in the position shown in Fig. 3 at which the spin chamber 55 is closed by the confronting end wall 32 of the nozzle cap such that product flowing through the discharge passage and into the spin chamber is swirled before exiting the discharge orifice as a wide divergent spray.
  • spin chamber 55 opens such than the effect of the tangentials is partially negated, whereby the liquid issues through discharge orifice 56 in a less divergent spray cone.
  • the spray from a full divergent spray pattern of Fig. 7 to less divergent spray patterns is controlled by the distance which stem 59 is shifted away from the confronting end wall 30 of the fixed nozzle until the spray issues substantively as a stream from the discharge orifice.
  • variable spray adjustment is made possible, and indicia in the form of a gradually widening arc 64 (Fig. 11) can be applied to wall 63 of the shroud, and a lever 65 or the like can be formed on thumbwheel 49 for indicating to the operator the variable spray pattern selected.
  • elongated stem 66 has no groove, channels, or spin chamber formed on its downstream end, but rather the downstream end is smooths except that its end wall has a central detent or tip 67 which, in the forwardmost (downstream) adjusted position of stem 66 (not shown), plugs into discharge orifice 56 for closing the discharge.
  • skirt 45 has a pair of longitudinal channels 68 leading to a pair of tangential channels 69 formed in the confronting wall of the nozzle cap together with a central spin chamber 71.
  • stem 66 can be rotated about its axis while shifting along its axis, without departing from the invention.
  • the thumbwheel would be fixed to the stem, and the keying arrangement as at 46, 61 would be eliminated, while edge 64 would be spaced a sufficient distance from the rearward wall of the thumbwheel to permit the wheel to shift axially together with the stem as in a pipe stem.
  • grooves 68 forming flow passages could alternately be formed on end 44 of the stem, without departing from the invention.

Landscapes

  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP96303263A 1995-06-23 1996-05-10 Pulvérisateur à pompe actionné par une gâchette Withdrawn EP0749785A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49429195A 1995-06-23 1995-06-23
US494291 1995-06-23

Publications (1)

Publication Number Publication Date
EP0749785A1 true EP0749785A1 (fr) 1996-12-27

Family

ID=23963876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96303263A Withdrawn EP0749785A1 (fr) 1995-06-23 1996-05-10 Pulvérisateur à pompe actionné par une gâchette

Country Status (4)

Country Link
EP (1) EP0749785A1 (fr)
JP (1) JPH091007A (fr)
AU (1) AU5594896A (fr)
CA (1) CA2179586A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114308476A (zh) * 2022-01-11 2022-04-12 武汉日鼎信易达自动化设备有限公司 一种渗透性强的汽车表面喷涂装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626185A (en) * 1949-09-23 1953-01-20 C W Harwin Inc Fluid stream and spray gun having a clean out pin
WO1987001618A1 (fr) * 1985-09-24 1987-03-26 Schotte Gmbh Dispositif de projection de liquides alimentes sous pression
US4706888A (en) * 1986-07-11 1987-11-17 Calmar, Inc. Multi-purpose nozzle assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626185A (en) * 1949-09-23 1953-01-20 C W Harwin Inc Fluid stream and spray gun having a clean out pin
WO1987001618A1 (fr) * 1985-09-24 1987-03-26 Schotte Gmbh Dispositif de projection de liquides alimentes sous pression
US4706888A (en) * 1986-07-11 1987-11-17 Calmar, Inc. Multi-purpose nozzle assembly

Also Published As

Publication number Publication date
CA2179586A1 (fr) 1996-12-24
JPH091007A (ja) 1997-01-07
AU5594896A (en) 1997-01-09

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