Claims
- 1. A container for pressurized fluid, comprising an envelope delimiting the space for the fluid and said envelope having an axis and including a movable wall designed to move automatically along said axis so as to reduce the volume of the space as the contents become exhausted, pressure means for exerting a positive pressure on said movable wall to continuously urge a reduction of the space, said pressure means including a vacuum chamber disposed so as to create a vacuum operable on at least a part of said movable wall, the space for the pressurized fluid and the vacuum chamber being disposed on opposite sides of the movable wall, said pressure means include resilient means separate and apart from said wall exerting on the wall a force opposed to that exerted on the latter by the pressurized fluid, means for introducing air into the vacuum chamber, so as to compensate for the reduction by release of the force exerted on the movable wall by the resilient means, and the means for the introduction of air are controlled by a device used to effect the dispensing of the pressurized fluid.
- 2. A container according to claim 1, wherein the dispensing device comprises a valve with two ranges of operation, one for dispensing the pressurized fluid and another more pronounced to actuate a valve controlling the entry of air into the vacuum chamber.
- 3. A container for pressurized fluid, comprising an envelope delimiting the space for the fluid and said envelope having an axis and including a movable wall designed to move automatically along said axis so as to reduce the volume of the space as the contents become exhausted, pressure means for exerting a positive pressure on said movable wall to continuously urge a reduction of the space, said pressure means including a vacuum chamber disposed so as to create a vacuum operable on at least a part of said movable wall, the space for the pressurized fluid and the vacuum chamber being disposed on opposite sides of the movable wall, said pressure means include resilient means separate and apart from said wall exerting on the wall a force opposed to that exerted on the latter by the pressurized fluid, means for introducing air into the vacuum chamber, so as to compensate for the reduction by release of the force exerted on the movable wall by the resilient means, and the entry of air into the vacuum chamber is controlled by a valve held in closing position by the pressure prevailing in the space for the fluid.
- 4. A container for pressurized fluid, comprising an envelope delimiting the space for the fluid and said envelope having an axis and including a movable wall designed to move automatically along said axid so as to reduce the volume of the space as the contents become exhausted, pressure means for exerting a positive pressure on said movable wall to continuously urge a reduction of the space, said pressure means including a vacuum chamber disposed so as to create a vacuum operable on at least a part of said movable wall, the space for pressurizing fluid and the vacuum chamber being disposed on opposite sides of the movable wall, said pressure means including resilient means separate and apart from said wall exerting on the wall a force opposed to that exerted on the latter by the pressurized fluid, and the vacuum chamber is annular shaped and acts as a housing for the resilient means formed by a coil spring.
- 5. A container for pressurized fluid, comprising an envelope delimiting the space for the fluid and said envelope having an axis and including a movable wall designed to move automatically along said axis so as to reduce the volume of the space as the contents become exhausted, pressure means for exerting a positive pressure on said movable wall to continuously urge a reduction of the space, said pressure means including a vacuum chamber disposed so as to create a vacuum operable on at least a part of said movable wall, the space for the pressurized fluid and the vacuum chamber being disposed on opposite sides of the movable wall, said pressure means including resilient means separate and apart from said wall exerting on the wall a force opposed to that exerted on the latter by the pressurized fluid, the envelope being a cylindrical envelope having a sealing wall at both ends, the movable wall being slidably mounted in the cylindrical envelope between the sealing walls, the space for the fluid and the vacuum chamber being formed inside the envelope, on opposite sides of the movable wall, and fluid-tight sealing between the space for the fluid and the vacuum chamber is achieved by a flexible sheath fixed by its two respective ends to the movable wall and to one of the sealing walls.
- 6. A container for pressurized fluid, comprising an envelope delimiting the space for the fluid and said envelope having an axis and including a movable wall designed to move automatically along said axis so as to reduce the volume of the space as the contents become exhausted, pressure means for exerting a positive pressure on said movable wall to continuously urge a reduction of the space, said pressure means including a vacuum chamber disposed so as to create a vacuum operable on at least a part of said movable wall, the space for the fluid and the vacuum chamber are situated on the same side of the movable wall, a flexible wall able to extend and contract along the axis of movement of the movable wall and ensuring the separation between the space for the fluid and the vacuum chamber, the ability of the flexible wall to extend and contract is afforded by its flexibility, and the movable wall is slidably mounted in the manner of a piston in a cylindrical envelope sealed by a cover at one end, the flexible wall being a sheath in the form of a bellows fixed by its two respective ends to the cover and to the piston to delimit an internal space, surrounded by an annular space, usable as desired one as the space for the fluid, the other as the vacuum chamber.
- 7. A container according to claim 6, in which the fluid-tightness of the annular space at the sliding joint of the piston is achieved by a flexible sheath fixed by its two respective ends to the piston and to the cylindrical wall.
- 8. A container for pressurized fluid, comprising an envelope delimiting a space for the fluid and having a wall designed to move automatically so as to reduce the volume of the space as the contents become exhausted, wherein a vacuum chamber is disposed so as to create a vacuum on at least a part of said wall, the movable wall has a first surface and a second surface which are exposed respectively to the fluid and to a vacuum, and having the same orientation relative to the axis of movement of the movable wall, a casing comprising an outer sleeve and two transverse walls, and wherein the movable wall is a hollow body formed of an inner sleeve sliding in the outer sleeve and of two transverse walls situated one on each side of a transverse wall of the casing, which forms a partition therein, an annular space being left between the periphery of the transverse partition and the inner surface of the outer sleeve, the transverse walls of the hollow body forming with respective transverse walls of the casing two chambers, the volume of which is variable simultaneously in the same sense through the displacement of the hollow body, one of these chambers being for the pressurized fluid and the other being the vacuum chamber.
- 9. A container according to claim 8, hwerein the outer sleeve has an axial length substantially equal to the sum of the axial lengths of the two chambers when the latter are at their maximum volume.
- 10. A container according to claim 8, in which the transverse wall of the casing associated with the vacuum chamber forms a fluid-tight bottom for the casing, the transverse partition being associated with the fluid chamber.
- 11. A container for pressurized fluid, comprising an envelope delimiting the space for the fluid and said envelope having an axis and including a movable wall designed to move automatically along said axis so as to reduce the volume of the space as the contents become exhausted, pressure means for exerting a positive pressure on said movable wall to continuously urge a reduction of the space, said pressure means including a vacuum chamber disposed so as to create a vacuum operable on at least a part of said movable wall, and the space for the fluid and the vacuum chamber are situated on the same side of the movable wall, wherein said means includes a compressed gas chamber, wherein the dispensable wall has a third surface exposed to the compressed gas and directed oppositely to the first and second surfaces and said casing comprises an outer sleeve with two end walls and an intermediate partition, an annular clearance being left between the periphery of the intermediate partition and the inner face of the outer sleeve, and wherein the movable wall is a hollow body formed of an inner sleeve mounted for sliding in the outer sleeve, and of two walls situated one on each side of the said intermediate partition, one of the two walls of the hollow body forming the said fluid chamber between it and the intermediate partition, while the other wall of the hollow body situated between the intermediate partition and the adjacent end wall, axially bounds with the said intermediate partition and end wall two respective chambers one of which is the vacuum chamber and the other the compressed gas chamber.
- 12. A container according to claim 11, in which the transverse wall of the casing associated with the fluid chamber forms a fluid-tight lid for the casing, the transverse partition being associated with the vacuum chamber.
- 13. A process for packing pressurized fluid into a container of the type comprising a chamber for pressurized fluid and a chamber for holding vacuum therein, having at least two components mounted mobile relative to each other along an axis of movement to change the volumes of said chambers, wherein each of said chambers has two axially spaced primary and secondary wall means, said two chambers being formed respectively by said two primary and said two secondary wall means, wherein the primary and secondary wall means of one of said chambers are connected by a tie located at least in part in one of said chambers, said process comprising the steps of giving the wall means the position corresponding to minimum volume for both chambers, and filling one of the chambers with pressurized fluid and thus automatically creating a vacuum in the other of the chambers.
- 14. A process for packing fluid in a container for pressurized fluid comprising an envelope delimiting a space for the fluid and having a wall designed to move automatically so as to reduce the volume of the space as the contents become exhausted, wherein a vacuum chamber is disposed so as to create a vacuum on at least a part of said wall, said process comprising the steps of giving the movable wall the position corresponding to the minimum volume for both the fluid space and the vacuum chamber, and introducing pressurized fluid into the fluid space and thus automatically creating a vacuum in the vacuum chamber.
- 15. A container for distributing pressurized flowable material, said container comprising a first chamber for receiving the material, provided with a valve-controlled outlet and a first mobile wall portion, and a variable volume self-contained vacuum second chamber for holding vacuum provided with a second mobile wall portion having two opposite faces which are exposed one to sub-stmospheric pressure from the vacuum chamber and the other to at least atmospheric pressure, with means linking said mobile wall portions together for simultaneous movement so as to cause simultaneous variations of the same sign in the volumes of both chambers, whereby the combined effect of said sub-atmospherica pressure and at least atmospheric pressure on said second wall portion is operative through the agency of said first wall portion in permanently pressurizing material in the first chamber and causing a quantity thereof to be ejected from said first chamber when said valve-controlled outlet is open, each such ejection causing simultaneous reductions in volume in both first and second chambers, with the material left in the first chamber after each such ejection remaining pressurized.
- 16. A container according to claim 15, wherein said wall portions are mobile along an axis of movement and wall means are porvided generally parallel to said axis for partitioning said container into said first and second chambers, said wall means being extensible along a direction parallel to said axis.
- 17. A container according to claim 16, wherein said wall means are flexible along said direction.
- 18. A container according to claim 16, wherein said wall means have two mutually telescoping elements.
- 19. A container according to claim 17, having a cylindrical envelope sealed by a cover at one end and a piston slidingly mounted therein, wherein said flexible wall means consist of a sheath in the form of a bellows fixed by its two respective ends to the cover and to the piston to delimit an internal space surrounded by an annular space, usable as desired one for the first and the other for the second chamber.
- 20. A container according to claim 19 having a flexible sheath fixed at one end thereof to the piston and at the other end thereof to the envelope with said other end positioned remote from the cover, whereby fluid-tightness of the annular space is ensured.
- 21. A container according to claim 15 formed of an assembly of two elements one of which constitutes a piston chamber and a piston while the other forms a piston and a piston chamber respectively adapted to the piston chamber and the piston of the first element, said piston chambers forming as desired one the first and the other the second said chamber.
- 22. A container according to claim 15 formed of an assembly of two elements one of which constitutes two pistons and the other two piston chambers respectively receiving the pistons of the first elements, said piston chambers forming as desired one the first and the other the second said chamber.
- 23. A container according to claim 21, wherein said piston chambers are one of cylindrical and the other of annular shape.
- 24. A container according to claim 15 wherein the first chamber has an annular shape formed around an axis and is provided at one axial end thereof with a first axially directed passageway leading to a second radially and outwardly directed passageway, terminating into said valve-controlled outlet, with a valve member fitted into said second passageway.
- 25. A container according to claim 24 wherein the valve member has a wedge-shaped portion mating with a wedge-shaped portion of the second passageway.
- 26. A container according to claim 24 wherein the valve member is mounted within the second passageway for radially directed reciprocating movement.
- 27. A container according to claim 15, having a casing comprising an outer sleeve and first and second transverse walls, with an annular gap left between the periphery of the second wall and the inner face of the outer sleeve, and a hollow body comprising an inner sleeve adapted to slide along an axis in the outer sleeve through said gap and provided with third and fourth transverse walls positioned on either side of the second wall, one of said chambers being defined by the outer sleeve together with the first and third transverse walls while the other said chamber is defined by the inner sleeve together with the second and fourth transverse walls.
- 28. A container according to claim 27 wherein the outer sleeve has an axial length substantially equal to the sum of the axial lengths of the two chambers when the latter are both at maximum volume.
- 29. A container according to claim 15 further provided with a third chamber for containing a compressed gas.
- 30. A container according to claim 27 further provided with a third chamber for containing a compressed gas, said second mobile wall portion having one face exposed to gas from said third chamber.
- 31. A container according to claim 30 wherein said third chamber is axially delimited by two of said first, second, third and fourth transverse walls.
- 32. A container according to claim 27 wherein said first transverse wall forms a fluid tight cover for the casing and is associated with the first chamber for material.
- 33. A container according to claim 30 wherein said first wall forms a fluid tight bottom for the casing and is associated with the second chamber for holding vacuum.
- 34. A container according to claim 15 wherein said wall portions are mobile along an axis of movement, said container having at least two components mounted mobile relative to each other along said axis, each of said elements having two axially spaced primary and secondary wall means, said two chambers being axially delimited respectively by said two primary and said two secondary wall means, wherein the primary and secondary wall means of one of said elements are connected by a tie located at lease in part in one of said chambers.
- 35. A container according to claim 34 wherein said tie is a rodlike component located in said axis of movement.
- 36. A container according to claim 34 wherein the primary and secondary wall means of said other element are connected by a sleevelike tie component forming casing for the container.
- 37. A process for packing pressurized flowable material into a container of the type comprising a first chamber for receiving the material and provided with a valve-controlled outlet and a first mobile wall portion and a second chamber for holding vacuum provided with a second mobile wall portion having two opposite faces which are exposed one to the second chamber and the other to at least atmospheric pressure, with means linking said mobile wall portions together for simultaneous movement between one position of minimum volume of both chambers and another position of maximum volume of both chambers, said process consisting in giving both mobile wall portions the position corresponding to minimum volume for both chambers and filling the first chamber with pressurized flowable material thereby automatically creating a vacuum in the second chamber.
- 38. A process for packing pressurized flowable material into a container of the type comprising a first chamber for receiving the material and provided with a valve-controlled outlet and a first mobile wall portion and a second chamber for holding vacuum provided with a second mobile wall portion having two opposite faces which are exposed one to the second chamber and the other to at least atmospheric pressure, with means linking said mobile wall portions together for simultaneous movement between one position of minimum volume of both chambers and another position of maximum volume of both chambers, said process consisting in applying to the mobile wall portions a force sufficient to distend the vacuum chamber by overcoming the at least atmospheric pressure acting on the second mobile wall portion, thereby simultaneously distending the first chamber, filling the first chamber with flowable material, and releasing said force whereby said material becomes pressurized.
Priority Claims (1)
Number |
Date |
Country |
Kind |
72.40290 |
Nov 1972 |
FRX |
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Parent Case Info
This is a continuation of application Ser. No. 414,135 filed Nov. 8, 1973, now abandoned.
US Referenced Citations (8)
Continuations (1)
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Number |
Date |
Country |
Parent |
414135 |
Nov 1973 |
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