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
• • 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
  • B05B11/1042—Components or details
  • B05B11/1073—Springs
  • B05B11/1074—Springs located outside pump chambers

Definitions

• the present invention relates to a pump and more particularly a low capacity pump for dispensing liquid products such as perfumes and cosmetic or pharmaceutical products.
• Traditional pumps generally comprise a plastic body delimiting a metering chamber provided at a first end with a valve for admitting liquid product supplied from a tank and at a second end with a worn exhaust valve. by the internal part of an axially movable nozzle tube cooperating with a helical spring.
• the intake valve includes a ball, made with metallic materials, which is housed inside the pump body in the metering chamber just like the return means generally consisting of a spring itself. also metallic
• the pump body is made with an opaque plastic material to mask the internal metallic elements.
• the reservoir most often consists of a glass or transparent plastic bottle which reveals the body of the pump, which is not satisfactory from an aesthetic point of view.
• the return means consist of a helical spring arranged outside the metering chamber.
• the return spring is held in slight compression around the external part of the spray tube, in particular by pressing its upper end into the bottom of a cavity formed on a dispensing head covering the end of said tube. Consequently, such an embodiment does not make it possible to separate the pump from the dispensing head safely because, in this In this case, the spring would no longer be attached to any part and would then be liable to be lost, particularly during storage or automatic transfer operations.
• the present invention aims to solve these technical problems satisfactorily.
• the intake valve comprises in particular a non-metallic ball while the external part of the spray tube is provided with a lateral shoulder against which a first end said spring is in wedging support.
• the body and the ball are made with a transparent or at least translucent plastic material.
• the pump also comprises an internal sleeve fitted in said body to close said chamber around the internal part of the nozzle tube and the bottom of which is intended to receive support from the second end of the spring.
• the internal end of said sleeve forms a stop for the exhaust valve carried by the internal part of said tube.
• said ball is made of glass or polypropylene while the pump body is made of polypropylene.
• the face of the shoulder in contact with the first end of the spring is flat and perpendicular to the axis of the spray tube.
• the face of the shoulder situated on the side of the external end of the spray tube is bevelled.
• said shoulder is formed around the entire periphery of the tube.
• the pump of the invention allows a transfer of the product without contact with any metallic element, which preserves the qualities of the product and simplifies the manufacturing and assembly operations while offering an economical cost price. Furthermore, all the components of the pump which are arranged inside the tank are made with a translucent or transparent material to light, which considerably improves the overall aesthetic appearance insofar as the pump does not appear practically no longer within the liquid product.
• FIG. 1 is a single sectional view of an embodiment of the pump of the invention.
• the pump shown in FIG. 1 comprises a body 1 produced with a transparent or at least translucent plastic material, for example polypropylene.
• the body 1 defines a metering chamber 10 provided at a first end with an inlet valve 11 for liquid product supplied via a dip tube 6 also translucent from a reservoir or a bottle (not shown).
• the inlet valve 11 comprises a non-metallic ball 5, made with a material transparent to light or at least translucent such as glass or propylene.
• the chamber 10 is provided at a second end, opposite the first end, with an exhaust valve 12 carried by the internal part 2a of a nozzle tube 2 delimiting an axial ejection duct 20.
• the spray tube 2 is axially movable by cooperating with a helical spring 3 ensuring the return to the closed position of the valve 12.
• the spring 3 is mounted coaxially around the external part of the tube 2.
• the external part of the tube 2 is provided with a lateral shoulder 21 against which a first end 31 of the spring 3 is in wedging support.
• the spring 3 is held in slight compression even in the closed position of the exhaust valve 12.
• the shoulder 21 is here produced around the entire periphery of the tube 2 and has a flat face 21a of contact with the turn of the end 31 of the spring 3.
• the face 21a is, moreover here, perpendicular to the axis X of the tube 2 and pump.
• the face 21b of the shoulder situated on the side of the external end 2b of the tube 2 is bevelled and optionally forms a stop for mounting a dispensing head or a push button (not shown) intended to cover the tube 2.
• the dispensing head will then comprise either a cylindrical bore allowing the fitting into abutment on the end 2b of the tube or a cavity with a frustoconical profile intended to receive the shoulder 21 by cone-on-cone assembly.
• the pump also includes an internal sleeve 4 fitted into the body 1 to close off the chamber 10 around the internal part of the nozzle tube 2.
• the sleeve 4 is provided with a support flange 41 on the external edge of the body 1 which extends inside the chamber 10 by a skirt 42.
• the skirt 42 is fixed by snap-fastening in the internal lateral wall of the chamber 10.
• the internal end of the skirt 42 forms a high stop for the exhaust valve 12 carried by the internal part of the tube 2. This stop corresponds to the closed position of the valve 12.
• the bottom 4a of the sleeve 4 is intended to receive the support of the second end 32 of the spring 3.

Landscapes

• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Reciprocating Pumps (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Lubrication Of Internal Combustion Engines (AREA)
• Closures For Containers (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9531661

Family Applications (1)

Country Status (13)

Families Citing this family (23)

Family Cites Families (20)

• 1998
  • 1998-10-16 FR FR9813004A patent/FR2784717B1/fr not_active Expired - Fee Related
• 1999
  • 1999-10-15 US US09/806,480 patent/US6415959B1/en not_active Expired - Lifetime
  • 1999-10-15 EP EP99947587A patent/EP1121203B1/de not_active Expired - Lifetime
  • 1999-10-15 BR BR9914769-6A patent/BR9914769A/pt not_active IP Right Cessation
  • 1999-10-15 AU AU60980/99A patent/AU6098099A/en not_active Abandoned
  • 1999-10-15 CA CA002347140A patent/CA2347140A1/en not_active Abandoned
  • 1999-10-15 DE DE69938311T patent/DE69938311T2/de not_active Expired - Lifetime
  • 1999-10-15 CN CN99812205A patent/CN1104964C/zh not_active Expired - Fee Related
  • 1999-10-15 WO PCT/FR1999/002514 patent/WO2000023199A1/fr active IP Right Grant
  • 1999-10-15 ES ES99947587T patent/ES2303384T3/es not_active Expired - Lifetime
  • 1999-10-15 AT AT99947587T patent/ATE387964T1/de not_active IP Right Cessation
  • 1999-10-15 JP JP2000576967A patent/JP4307736B2/ja not_active Expired - Fee Related
• 2002
  • 2002-03-14 HK HK02101969.3A patent/HK1040210B/zh not_active IP Right Cessation

Non-Patent Citations (1)

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