IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0912052
(2001-07-23)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
3 |
초록
▼
A piston for a pressurized container (i.e., “aerosol can”), the piston including a body having circumferential fins, with the fins being of uniform thickness, decreasing thickness radially away from the body, or varying thickness circumferentially. Further disclosed are container precursors and cont
A piston for a pressurized container (i.e., “aerosol can”), the piston including a body having circumferential fins, with the fins being of uniform thickness, decreasing thickness radially away from the body, or varying thickness circumferentially. Further disclosed are container precursors and containers incorporating such a piston, and methods of filling and dispensing from such containers.
대표청구항
▼
1. A container precursor suitable for making a pressurized product dispensing container, the precursor comprising: a hollow cylindrical body with a top end suitable for receiving a valved cap, and a bottom end suitable for receiving a bottom wall, defining a reservoir; and, a piston positioned
1. A container precursor suitable for making a pressurized product dispensing container, the precursor comprising: a hollow cylindrical body with a top end suitable for receiving a valved cap, and a bottom end suitable for receiving a bottom wall, defining a reservoir; and, a piston positioned within the reservoir, dividing the reservoir into an upper product containing chamber, and a lower propellant containing chamber, wherein the piston comprises a body and at least one fin circumferentially positioned around the body, wherein the fin is of uniform thickness. 2. The container precursor of claim 1, wherein the piston comprises at least two fins, a first fin and a second fin, circumferentially positioned around the body.3. The container precursor of claim 2, wherein at least a portion of the fins comprise a friction reducing material.4. The container precursor of claim 2, wherein the first fin is angled toward the upper chamber and the second fin is angled toward the lower chamber.5. The container precursor of claim 2, wherein both the first fin and the second fin are angled toward the lower chamber.6. A piston for use in a pressurized piston operated product dispensing container, the piston comprising a body; and, a first fin and a second fin, both circumferentially positioned around the body, wherein each fin forms an inclusive angle with the body in the range of greater than 0° to about 90°, and wherein the thickness of the fins decreases radially away from the body. 7. The piston of claim 6, wherein the body comprises a top and a bottom, and wherein the first fin points toward the bottom of the body, and the second fin points toward the top of the body.8. The piston of claim 7, wherein the body comprises a top and a bottom, and wherein the first fin is angled toward the top and the second fin is angled toward the bottom.9. The piston of claim 7, wherein both the first fin and the second fin are angled toward the bottom.10. The piston of claim 7, wherein at least a portion of the fins comprise a friction reducing material.11. A container precursor suitable for making a pressurized product dispensing container, the precursor comprising: a hollow cylindrical body with a top end suitable for receiving a valved cap, and a bottom end suitable for receiving a bottom wall, defining a reservoir; and, a piston positioned within the reservoir, dividing the reservoir into an upper product containing chamber, and a lower propellant containing chamber, wherein the piston comprises a body and a first fin and a second fin, both circumferentially positioned around the body, wherein each fin forms an inclusive angle with the body in the range of greater than 0° to about 90°, and wherein the thickness of the fins decreases radially away from the body. 12. The container precursor of claim 11, wherein the piston comprises at least two fins, a first fin and a second fin, circumferentially positioned around the body.13. The container precursor of claim 12, wherein at least a portion of the fins comprise a friction reducing material.14. The container precursor of claim 12, wherein the first fin is angled toward the upper chamber and the second fin is angled toward the lower chamber.15. The container precursor of claim 12, wherein both the first fin and the second fin are angled toward the lower chamber.16. A method of dispensing from a container, the container comprising a hollow cylindrical body with a top end and a bottom end, defining a reservoir, a bottom wall sealing the bottom end, and a valved cap sealing the top end, and a piston positioned within the reservoir, dividing the reservoir into an upper chamber containing a product, and a lower chamber containing a propellant, wherein the piston comprises a body and a first fin and a second fin both fins circumferentially positioned around the body, wherein each fin forms an inclusive angle with the body in the range of greater than 0° to about 90° and wherein the thic kness of the fins decreases radially away from the body, the method comprising: (A) operating the valved cap to dispense product. 17. The method of claim 16, wherein the body comprises a top and a bottom, and wherein the first fin points toward the bottom of the body, and the second fin points toward the top of the body.18. A piston for use in a pressurized piston operated product dispensing container, the piston comprising a body; and, at least one fin circumferentially positioned around the body, wherein the thickness of the fin varies circumferentially around the fin. 19. The piston of claim 18, comprising at least two fins, a first fin and a second fin, circumferentially positioned around the body.20. The piston of claim 19, wherein the body comprises a top and a bottom, and wherein the first fin is angled toward the top and the second fin is angled toward the bottom.21. The piston of claim 19, wherein both the first fin and the second fin are angled toward the bottom.22. The piston of claim 19, wherein at least a portion of the fins comprises a friction reducing material.23. A container precursor suitable for making a pressurized product dispensing container, the precursor comprising: a hollow cylindrical body with a top end suitable for receiving a valved cap, and a bottom end suitable for receiving a bottom wall, defining a reservoir; and, a piston positioned within the reservoir, dividing the reservoir into an upper product containing chamber, and a lower propellant containing chamber, wherein the piston comprises a body and at least one fin circumferentially positioned around the body, wherein the thickness of the fin varies circumferentially around the fin. 24. The container precursor of claim 23, wherein the piston comprises at least two fins, a first fin and a second fin, circumferentially positioned around the body.25. The container precursor of claim 24, wherein at least a portion of the fins comprised a friction reducing material.26. The container precursor of claim 24, wherein the first fin is angled toward the upper chamber and the second fin is angled toward the lower chamber.27. The container precursor of claim 24, wherein both the first fin and the second fin are angled toward the lower chamber.28. A container comprising: a hollow cylindrical body with a top end and a bottom end, defining a reservoir, a bottom wall sealing the bottom end, and a valved cap sealing the top end; and, a piston positioned within the reservoir, dividing the reservoir into an upper chamber, and a lower chamber, wherein the piston comprises a body and at least one fin circumferentially positioned around the body, wherein the thickness of the fin varies circumferentially around the fin. 29. The container of claim 28, wherein the piston comprises at least two fins, a first fin and a second fin, circumferentially positioned around the body.30. The container of claim 29, wherein at least a portion of the fins comprises a friction reducing material.31. The container of claim 30, wherein the first fin is angled toward the upper chamber and the second fin is angled toward the lower chamber.32. The container of claim 30, wherein both the first fin and the second fin are angled toward the lower chamber.33. The container of claim 30, wherein a product is positioned in the upper chamber, and wherein the product is selected from the group consisting of oil-in-water emulsions, water-in-oil emulsions, polymeric gels, foams, surfactant mixtures, dispersions, colloidal dispersions, suspensions, polymer solutions, polymer melts, detergents, laundry and cleaning products, adhesives, lubricating oils and greases, paints, chemicals, flowable food products, condiments, mayonnaise, ketchup, mustard, sauces, pastes, syrup, cheeses, spreads, jams, jellies, butter, margarine, oil sprays, health, beauty and personal care products, cosmetics, lotions, creams, gels, sprays, mousses, shampoos and conditioners, and wound care products.34. T he container of claim 33, wherein the product comprises a viscosity less than about 10,000 centipoise.35. The container of claim 33, wherein the product comprises a viscosity less than about 1,000 centipoise.36. A method of dispensing from a container, the container comprising a hollow cylindrical body with a top end and a bottom end, defining a reservoir, a bottom wall sealing the bottom end, and a valved cap sealing the top end, and a piston positioned within the reservoir, dividing the reservoir into an upper chamber containing a product, and a lower chamber containing a propellant, wherein the piston comprises a body and at least one fin circumferentially positioned around the body, wherein the thickness of the fin varies circumferentially around the fin, the method comprising: (A) operating the valved cap to dispense product. 37. The method of claim 36, wherein the piston comprises at least two fins circumferentially positioned around the body, and wherein the thickness of the fin varies circumferentially around the fin.38. A container precursor suitable for making a pressurized product dispensing container, the precursor comprising: a hollow cylindrical body with a top end suitable for receiving a valved cap, and a bottom end suitable for receiving a bottom wall, defining a reservoir; and, a piston positioned within the reservoir, dividing the reservoir into an upper product containing chamber, and a lower propellant containing chamber, wherein the piston comprises a body and at least one fin circumferentially positioned around the body, wherein when the fins are in a first unactivated position, they do not radially extend to the hollow cylindrical body, and when the fins are in a second activated position, they radially extend to and contact the hollow cylindrical body. 39. The container precursor of claim 38, wherein the piston comprises at least two fins, a first fin and a second fin, circumferentially positioned around the body.40. The container precursor of claim 39, wherein at least a portion of the fins comprise a friction reducing material.41. The container precursor of claim 39, wherein the first fin is angled toward the upper chamber and the second fin is angled toward the lower chamber.42. The container precursor of claim 39, wherein both the first fin and the second fin are angled toward the lower chamber.43. A container comprising: a hollow cylindrical body with a top end and a bottom end, defining a reservoir, a bottom wall sealing the bottom end, and a valved cap sealing the top end; and, a piston positioned within the reservoir, dividing the reservoir into an upper product containing chamber, and a lower propellant containing chamber, wherein the piston comprises a body and at least two fins circumferentially positioned around the body, wherein when the fins are in a first unactivated position, they do not radially extend to the hollow cylindrical body, and when the fins are in a second activated position, they radially extend to and contact the hollow cylindrical body. 44. The container of claim 43, wherein the piston comprises at least two fins, a first fin and a second fin, circumferentially positioned around the body.45. The container of claim 44, wherein at least a portion of the fins comprises a friction reducing material.46. The container of claim 44, wherein the thickness of the fins varies circumferentially around the fin.47. The container of claim 44, wherein both the first fin and the second fin are angled toward the lower chamber.48. The container of claim 44, wherein a product is positioned in the upper chamber, and wherein the product is selected from the group consisting of oil-in-water emulsions, water-in-oil emulsions, polymeric gels, foams, surfactant mixtures, dispersions, colloidal dispersions, suspensions, polymer solutions, polymer melts, detergents, laundry and cleaning products, adhesives, lubricating oils and greases, paints, chemicals, flowable food products, condi ments, mayonnaise, ketchup, mustard, sauces, pastes, syrup, cheeses, spreads, jams, jellies, butter, margarine, oil sprays, health, beauty and personal care products, cosmetics, lotions, creams, gels, sprays, mousses, shampoos and conditioners, and wound care products.49. The container of claim 48, wherein the product comprises a viscosity less than about 10,000 centipoise.50. The container of claim 48, wherein the product comprises a viscosity less than about 1,000 centipoise.
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