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
  • B05B11/1028—Pumps having a pumping chamber with a deformable wall
  • B05B11/1029—Pumps having a pumping chamber with a deformable wall actuated by a lever
  • B05B11/103—Pumps having a pumping chamber with a deformable wall actuated by a lever without substantial movement of the nozzle in the direction of the pressure 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
  • B05B11/1028—Pumps having a pumping chamber with a deformable wall
  • B05B11/1033—Pumps having a pumping chamber with a deformable wall the deformable wall, the inlet and outlet valve elements being integrally formed, e.g. moulded
• • 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
  • B05B11/0037—Containers
  • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
  • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means

Definitions

• the pump of the present invention is a manually operated trigger actuated dispenser pump including a main housing with a trigger connected thereto, a tubular bladder which fits into the housing, and a nozzle connected to the housing. Fluids are dispensed from the nozzle by depressing the trigger which strikes a strip which in turn strikes the bladder and forces fluids therefrom outwardly through the nozzle.
• a manually operated trigger actuated dispenser pump including a main housing with a trigger connected thereto, a tubular bladder which fits into the housing, and a nozzle connected to the housing. Fluids are dispensed from the nozzle by depressing the trigger which strikes a strip which in turn strikes the bladder and forces fluids therefrom outwardly through the nozzle.
• Figure 1 is a side elevational view of the pump mounted on a container.
• Figure 2 is a front elevational view of the pump mounted on a container.
• Figure 3 is a cross-sectional view taken along lines 3-3 of Figure 2.
• Figure 4 is a cross-sectional view taken along lines 3-3 of Figure 2 in which the trigger is being depressed.
• Figure 5 is an enlarged, cut-away view taken along lines 5-5 of Figure 4.
• Figure 6 is a cross-sectional view taken along lines 3-3 of Figure 2 in which the trigger is being released.
• Figure 7 is a rear plan view of a flexible valve member.
• Figure 8 is a side view of a liquid conduit.
• Figure 9 is a front end view of the conduit of Figure 8.
• Figure 10 is a front plan view of the flexible valve member of Figure 7.
• Figure 11 is a side view of the flexible valve member of Figure 7.
• Figure 12 is a front end view of a flexible bladder.
• Figure 13 is a side elevational view of the bladder of Figure 12.
• pump 10 can be seen to be mounted on container 14.
• the pump 10 is'held onto the container neck 12 by screw cap ' 24.
• screw cap 24 could be replaced with any con ⁇ ventional closure, such as a snap-on closure.
• the pump 10 includes a housing, generally indicated by the number 16, having, preferably, an integrally molded trigger 18.
• trigger 18 can be connected to the pump assembly or housing 16 by any conventional means, such as pinning, bolting, or the like.
• Housing 16 has a generally horizontal portion 16a_ and a generally vertical portion 16b.
• Horizontal portion 16a_ forms an approximate right, angle with vertical portion 16b.
• horizontal portion 16a is approximately horizontal and vertical portion 16b is vertical.
• Horizontal portion 16a_ has a generally horizontal cavity 19 therein for receipt of bladder 20 and nozzle 22.
• cavity 19 has a tapered upstream end 19b for
• OMPI re ⁇ eipt of the tapered end 20a of bladder 20.
• a vertical channel 21 in vertical portion 16b connects suction tube 28 with cavity 19.
• the end 20a of bladder 20 covers the upper end of channel 21.
• Suction tube 28 is connected to the lower end
• the lower end 16c of vertical portion 16b can be tapered so that it may be easily inserted in the top of cap 24 and may be provided with a shoulder 16d for force fitting into hole 24a. in cap 24.
• the lower end 16£ of vertical portion 16b could also be threaded to screw into a conventional closure, or formed in any other conventional manner.
• Bladder 20 is made of an elastic material such as rubber, plastic, or other flexible materials, which can be depressed and relaxed and expanded to its natural profile.
• the bladder has a cylindrical end port 20b_ on its left end or downstream end which cooperates with post 50 to function as a one-way nipple-type valve that allows fluids to pass outwardly only from the bladder.
• the upstream end or right end 20a_ of bladder 20 is tubular in shape and open on the end.
• bladder 20 has a relatively thin wall thickness as can be seen in Figure 3 at 2 ⁇ £ so that the end 20a_ of bladder 20 can act as a flapper valve as shown in Fig 6.
• the section 2 ⁇ £ may be tapered to aid in assembly.
• Nozzle 22 Located downstream from bladder 20 is nozzle 22.
• Nozzle 22 can be any conventional type nozzle which has an orifice 22a therein.
• a preferred nozzle is that disclosed in U.S. Patent No. 4,257,561, issued March 24, 1981. As can be seen in the drawings, the nozzle is generally indicated by the numeral 22.
• nozzle 22 has a hollow cavity 111 therein for receipt of conduit 122.
• Conduit 122 is shown in detail in Figures 8 and 9.
• Conduit 122 has an upstream end 122a which can be glued or force fitted into the downstream end of housing 16.
• Conduit 122 has a hollow channel 122b therein through which liquids flow when trigger 18 is depressed.
• Conduit 122 has a solid post 50 at the upstream end thereof.
• Two channels 122£-122£ are formed in the upstream end for liquids to enter channel 122b.
• Flexible valve member 128 has a central, generally hemispherical portion 130 surrounded by apertures 132.
• the apertures 132 provide fluid flow passages between the outlet conduit 122 and the aperture 22a. in nozzle 22 when flexible outlet valve 128 is open.
• Valve 128 is opened and clo.sed by screwing nozzle 22 outwardly and inwardly, respectively.
• the main housing 16 has a thin leaf-like strip
• Strip 30 can include a bump or raised portion 30a. to increase the volume of liquid displaced from bladder 20. However, if desired, the thin leaf-like strip 30 can be omitted to permit the upper portion 18a_ of trigger 18 to contact bladder 20 directly and a bump may be incorporated on the upper portion 18a_ of trigger 18 to increase the volume of liquid displaced.
• Housing 16 can be seen to have a recess 17 therein.
• Recess 17 is a hollow portion in housing 16 which is pro- vided for the purposes of saving material and decreasing cost of the housing.
• the front portion of recess 17 can best be seen in Figure 1 to lie directly behind the trigger.
• a similar recess 17 is provided on the back part of housing 16.
• the operation of the pump of the present invention is depicted in drawings 4 and 6.
• trigger 18 When trigger 18 is depressed in the direction of the arrow indicated in Fi ⁇ ure 4, the upper portion 18a_ thereof forces. he lower end of bladder 20 upward, thereby compressing the fluid contained within bladder 20. The fluid is compressed and moves out ⁇ wardly through valve 20b and orifice 22a. of nozzle 22 as indicated in Figure 4.
• Vent 45 allows air to enter the container when the pump is actuated.
• the path of the air flov/ is from the atmosphere through slots 31, shown in Figure 5, into the space 32, shown in Figure 1, which is immediately behind thin leaf-like strip 30, and downwards through vent 45.
• Such a means for venting is desirable when the pump has an air-tight seal with the container.
• the complete pump assembly includes a relatively small number of component parts, i.e., a main housing with an integrally formed trigger, a nozzle, a bladder, a screw cap, a gasket, and a dip tube.
• the main housing snap fits into the screw cap and incorporates a leak-proof seal.
• the screw cap pre ⁇ ferably has integrally molded score marks (not shown) on the underside which allow air to enter the container between the gasket and cap to displace fluid discharge by the pump.
• the pump of the present invention can thus be seen to be easily assembled.
• To assemble the pump one merely inserts the bladder 20 into cavity 19 and then inserts conduit 122, valve 128, and nozzle 22 into cavity 19 downstream from the bladder 20. Dipper tube 28 may then be forced upwardly into channel 21.
• the entire pump may be made entirely of plastic material as is well known in the art.
• the bladder of course, should be made of a flexible material which will return to its natural profile after being deformed and depressed.

Landscapes

• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Closures For Containers (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=43875312

Family Applications (1)

Country Status (4)

Cited By (9)

Families Citing this family (3)

Citations (5)

Family Cites Families (4)

• 1981
  • 1981-12-28 JP JP57500593A patent/JPS57502053A/ja active Pending
  • 1981-12-28 WO PCT/US1981/001772 patent/WO1982002372A1/en unknown
  • 1981-12-30 CA CA000393376A patent/CA1165288A/en not_active Expired
• 1982
  • 1982-01-22 EP EP82300341A patent/EP0084697A1/en not_active Withdrawn

Patent Citations (5)

Also Published As

Similar Documents

Legal Events