Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D47/00—Closures with filling and discharging, or with discharging, devices
• • 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
  • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
  • B05B11/026—Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
• • 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
  • B05B11/1066—Pump inlet valves
  • B05B11/1067—Pump inlet valves actuated by pressure
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material

Definitions

• the invention relates to a manually controlled metering pump for a bottle with a deformable envelope.
• Certain liquid or pasty products in particular medicinal products, are presented in bottles, and should not be placed in the presence of air to keep their properties or to avoid degradation.
• the bottles which contain them must then have a deformable envelope, so that the volume of this envelope always corresponds to the volume of the liquid present in the bottle.
• the object of the present invention is to propose a pump ensuring the tightness of the bottle whatever its position.
• the subject of the invention is a manually controlled metering pump for a bottle with a deformable envelope, comprising a metering chamber between a lower valve and an upper valve, a pusher repelled by a spring and a spout communicating with the metering chamber by means of the 'intermediate a central channel, characterized in that the lower valve is flexible and of frustoconical shape, and in that the upper valve is carried by a disc constituting the base of a hollow rod secured to the pusher, and bears under a hollow piston capable of being driven by the pusher.
• the hollow piston slides in the metering chamber and carries a narrowing on which comes to bear a central tube carried by the pusher.
• the hollow piston carries an O-ring to seal in the metering chamber.
• the O-ring is held in a groove carried by the hollow piston.
• the groove surrounds the O-ring on three sides;
• the groove holds the O-ring on the top and inside, and the bottom is held by the edge of the disc constituting the base of the hollow rod;
• the lower valve is carried by a frustoconical part ie of the bottom of the pump;
• the lower valve is held on the bottom of the pump by a key.
• Figure 1 - a sectional view of a bottle with a deformable envelope equipped with a pump according to the invention
• Figure 2 - a sectional view of the pump of Figure 1 at the end of the pumping stroke for the expulsion of the liquid.
• Figure 3 - a sectional view of an alternative embodiment of a deformable envelope bottle equipped with a pump according to the invention.
• Figure 4 - a sectional view of the pump of Figure 3 during pumping.
• the bottle fitted with the pump according to the invention comprises a rigid outer envelope 1 and a deformable inner envelope 2 placed inside the rigid envelope 1.
• the neck 3 of the deformable envelope 2 is placed on the neck 4 of the rigid envelope 1.
• a metering pump 5 is placed on the envelopes 1 and. 2 of the bottle with interposition of a neck seal 6.
• a protective cover 7 is placed on the pump 5.
• the pump 5 comprises a body 8 having an external cylindrical skirt 9 capable of snapping in from the outside onto the rigid envelope 1 of the bottle, an intermediate skirt 10 applying to the interior of the deformable interior envelope 2 of the bottle, and. an inner skirt 11. These three coaxial skirts are carried by a flat ring 12 which rests on the neck seal 6 by compressing it to ensure the seal between the interior of the deformable envelope 2 and. the outside of the bottle.
• a bottom 13 of the pump 5 Under the flat ring 12 is disposed a bottom 13 of the pump 5.
• This bottom 13 has an external cylindrical wall 14 applying to the interior of the intermediate skirt 10 and an internal cylindrical wall 15 applying to the interior of the inner skirt 11 of the body 8 of the pump 5.
• These two walls 14 and 15 are connected by a frustoconical part 16 open downward, and the outer edge of which protrudes slightly from the outer wall 14 to cooperate with a groove presented by the intermediate skirt 10 in order to ensure the locking in position of the bottom 13 on the body 8.
• the frustoconical part 16 is extended inward by another part frustoconical 17 open upwards and having a central orifice 18.
• the frustoconical part 17 of the bottom 13 moreover has at least one orifice 19 intended to make the interior of the deformable envelope 2 communicate with the metering chamber 20 placed above from the bottom 13.
• a flexible, frusto-conical lower valve 21 is arranged and held in abutment on the bottom 13 by a key 22 passing through the valve 21 and the central orifice 18 of the bottom 13. This valve 21 closes the orifice 19 for communication between the inner envelope 2 of the bottle and the metering chamber 20 of the pump.
• the body 8 of the pump 5 has from the outside towards the inside, three coaxial walls: an outer wall 23 extending in the extension of the outer skirt 9, then after a constriction 24, extending by a cylindrical part 25 provided with an annular rib towards the outside to cooperate with the cover 7 while ensuring its maintenance; an intermediate wall 26, attached at least partially to the outer wall 23 at its upper part by radial arms 27; and an inner wall 28 substantially the same height as the intermediate wall 26.
• the inner wall 28 carries a flat ring 29 which extends towards the axis 30 of the bottle, and is extended by a cylindrical wall 31 extending upwards.
• This cylindrical wall 31 serves as a guide for the piston 32 of the pump 5.
• This piston 32 is cylindrical and hollow. It has about halfway up, a narrowing 33 intended to serve as a support for the push 34 of the pump 5.
• I l po rte at its base is an annular enlargement 35 capable of coming to bear under the flat ring 29. Under this enlargement 35 is disposed an annular groove 36 in which is disposed an O-ring 37 ensuring the seal against the internal wall 28.
• the pusher 34 essentially consists of a spout 38 at its upper part, a central tube 39 and a bell 40, coaxial with the central tube 39.
• This bell 40 has a cylindrical skirt 41 capable of sliding inside of the intermediate wall 26.
• the bell 40 is urged upwards by a spiral spring 42, which extends from the upper part of the bell 40, inside the skirt 41 of the bell 40, outside from the inner wall 28, to the flat ring 12 on which it rests.
• the central tube 39 is capable of sliding inside the piston 32 until it comes into contact with the constriction 33. It carries inside a hollow rod 43 which is integral with the central tube 39.
• the rod 43 slides inside the constriction 33 of the central tube 39. It widens below the constriction. 33 and between its widening 45 and the narrowing. 33 is disposed an O-ring seal 44.
• the hollow rod 43 has lateral openings 46, capable of making the inside of the rod 43 communicate with the outside.
• the rod 43 carries a disc 47 on which is disposed an upper valve 48 of annular shape, which bears under the enlargement 35 of the piston 32.
• the bell 40 carries, on the outside, a ring 49. Between this ring 49 and the upper part of the intermediate wall 26, a tear-away cylindrical collar is provided, not shown, intended to ensure that the pump is not used until it has been removed.
• the plunger 34 is in the high position, the upper valve 48 is closed, the central tube 39 is not supported on the narrowing 33 of the piston 32 but slightly above, the enlargement 35 of the piston 32 is supported under the flat ring 29, and the lower valve 21 is closed.
• the metering chamber 20 is defined by the space between the upper valve 48 and the lower valve 21 inside the internal cylindrical wall 28.
• the pump 5 is shown at the end of the pumping stroke.
• the disc 47 is in the low position at the level of the flat ring 12, the upper valve 48 is open, the openings 46 of the hollow rod 43 are free, and the product contained in the metering chamber 20 of FIG. 1 has been routed to the spout 38 through the central channel 50 of the rod 43 and the tube 39.
• the operation of the pump according to the invention is. the following: a manual press on the pusher 34 lowers the central tube 39 until it presses on the narrowing 33 of the piston 32. During this descent, the upper valve 48 opens and the product contained in the chamber 20 begins to pass, through the openings 46 of the rod 43, towards the central channel 50.
• the downward movement of the pusher 34 continues by driving the piston 32 which slides in the cylindrical wall 31.
• the cylindrical skirt 41 of the bell 40 slides inside the intermediate wall 26 and the spring 42 is compressed.
• the product contained in the chamber 20 flows through the openings 46, the central channel 50 and the spout 38.
• the manual pressure on the pusher is removed and the spring 42 causes the pusher 34 driving the rod 43 which is integral therewith.
• the upper valve 48 closes and the raising of the pusher 34 causes the piston 32 to rise by pressing the valve 48 under the annular enlargement 35 of the piston 32.
• the lower valve 21 opens and the product contained in the envelope deformable 2 then rises in the chamber 20, the corresponding reduction in volume resulting in a corresponding deformation of the deformable envelope 2.
• the lower valve 21 closes.
• the body 8 of the pump 5 always has three coaxial walls, but if the intermediate wall 26 and the inner wall 28 are identical to those of FIG. 1, the outer wall 51 is modified relative to the wall 23 of FIG. 1.
• the wall 51 is brought back towards the axis 30 of the pump 5 and its outer edge is profiled to receive the protective cover 7. In addition, this wall 51 is not connected to the intermediate wall 26.
• FIG. 1 Another modification concerns the groove 36 for holding the O-ring 37.
• this groove 36 surrounds the O-ring on three sides.
• the groove 36 no longer maintains the O-ring 37 on two sides: the top and the inside.
• the underside of the O-ring 37 is held by the outer edge of the disc 47 constituting the base of the rod 43.
• This arrangement makes it possible to avoid a two-part mold for the manufacture of the piston 32 which carries the O-ring 37, which avoids a trace of the joint plane, originating from the opening and closing of the mold, in the groove of the O-ring, and thus improves the sealing of this seal.
• the relative provisions of the O-ring 37, the groove 36 and the disc 47 are clearly visible.
• the disc 47 is wide enough to drive the O-ring 37 when the plunger is raised, but it lets around the product which flows towards the central channel 50.
• the pump according to the invention has been described in the case of a bottle with a deformable wall. Its operation is identical in the case of a piston bottle rising in a cylindrical envelope to keep the product away from air.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Reciprocating Pumps (AREA)
• Closures For Containers (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9468755

Family Applications (1)

Country Status (10)

Families Citing this family (40)

Family Cites Families (9)

• 1994
  • 1994-11-10 FR FR9413582A patent/FR2726810B1/fr not_active Expired - Fee Related
• 1995
  • 1995-11-08 CA CA002204647A patent/CA2204647C/fr not_active Expired - Fee Related
  • 1995-11-08 JP JP51578496A patent/JP3235665B2/ja not_active Expired - Fee Related
  • 1995-11-08 AT AT95940287T patent/ATE165576T1/de active
  • 1995-11-08 ES ES95940287T patent/ES2116114T3/es not_active Expired - Lifetime
  • 1995-11-08 DE DE69502295T patent/DE69502295T2/de not_active Expired - Lifetime
  • 1995-11-08 WO PCT/FR1995/001470 patent/WO1996015045A1/fr active IP Right Grant
  • 1995-11-08 EP EP95940287A patent/EP0790936B1/de not_active Expired - Lifetime
  • 1995-11-08 KR KR1019970703120A patent/KR100262779B1/ko not_active IP Right Cessation
  • 1995-11-08 US US08/836,349 patent/US6021924A/en not_active Expired - Lifetime

Non-Patent Citations (1)

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