IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0821218
(2001-03-29)
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발명자
/ 주소 |
- Hademenos, Jim P.
- Harkins, Randall D.
- Kelly, Thomas P.
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출원인 / 주소 |
- Cooper Cameron Corporation
|
대리인 / 주소 |
Hartmann, Michael P.Bielinski, Peter A.
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인용정보 |
피인용 횟수 :
4 인용 특허 :
15 |
초록
▼
A valve and valve actuator utilizing a disconnected piston design that separates under conditions of excessive actuator internal pressure to prevent overloading and damaging the threaded connection between the valve stem and actuator piston is disclosed. The hydraulically actuated valve actuator com
A valve and valve actuator utilizing a disconnected piston design that separates under conditions of excessive actuator internal pressure to prevent overloading and damaging the threaded connection between the valve stem and actuator piston is disclosed. The hydraulically actuated valve actuator comprises a spring housing including a bonnet for coupling the spring housing to a valve. The spring housing includes an upper head and a packing gland that are sealingly attached to the spring housing to form an interior pressure chamber. The interior pressure chamber has a pressure responsive actuator piston disposed therein with a coil spring designed to move the actuator piston from a normally open to a fail closed position. The pressure responsive actuator piston includes a piston and a spring retainer nut that are separable after closing of the valve to prevent ambient pressure acting within the pressure chamber on the pressure responsive actuator piston from overloading the valve stem.
대표청구항
▼
A valve and valve actuator utilizing a disconnected piston design that separates under conditions of excessive actuator internal pressure to prevent overloading and damaging the threaded connection between the valve stem and actuator piston is disclosed. The hydraulically actuated valve actuator com
A valve and valve actuator utilizing a disconnected piston design that separates under conditions of excessive actuator internal pressure to prevent overloading and damaging the threaded connection between the valve stem and actuator piston is disclosed. The hydraulically actuated valve actuator comprises a spring housing including a bonnet for coupling the spring housing to a valve. The spring housing includes an upper head and a packing gland that are sealingly attached to the spring housing to form an interior pressure chamber. The interior pressure chamber has a pressure responsive actuator piston disposed therein with a coil spring designed to move the actuator piston from a normally open to a fail closed position. The pressure responsive actuator piston includes a piston and a spring retainer nut that are separable after closing of the valve to prevent ambient pressure acting within the pressure chamber on the pressure responsive actuator piston from overloading the valve stem. rent width than at least one other space. 10. The device in accordance with claim 8, wherein each space has substantially the same width as each of the other spaces, at least one of the reed wires has a thickness different from the thickness of at least one other reed wire, and at least one of the discs has a thickness different from the thickness of at least one other disc. 11. The device in accordance with claim 8, wherein at least one space is of a different width than at least one other space, at least one reed wire has a thickness different from at least one other reed wire, and at least one of the discs has a thickness different from the thickness of at least one other disc. 12. The device in accordance with claim 8, further comprising a plurality of dent groups, each dent group comprising a plurality of reed wires and corresponding spaces, and a plurality of discs and corresponding spaces, the width of each dent in a dent group being substantially the same as the width of the other dents in the group and different from the width of the dents of at least one of the other dent groups. 13. The device in accordance with claim 1, wherein the weaving elements comprise lamellae. 14. The device in accordance with claim 13, wherein each lamella has substantially the same thickness as each of the other lamellae, and at least one space is of a different width than at least one other space. 15. The device in accordance with claim 13, wherein each space has substantially the same width as each of the other spaces and at least one lamella has a thickness different from the thickness of at least one other lamella. 16. The device in accordance with claim 13, wherein at least one space is of a different width than at least one other space, and at least one lamella has a thickness different from the thickness of at least one other lamella. 17. The device in accordance with claim 13, further comprising a plurality of dent groups, each dent group comprising a plurality of lamellae and corresponding spaces, the width of each dent in a dent group being substantially the same as the width of the other dents in the group and different from the width of the dents of at least one of the other dent groups. 18. A device for weaving a fabric, comprising, in combination: a plurality of reed wires, each reed wire being separated from adjacent reed wires by a space; a plurality of dents, each dent comprising a reed wire and an adjacent space of predetermined precision, with at least one of the dents having a width different from the width of other dents so that the fabric woven by the device has precise controlled air permeability in a predetermined cross-section of the woven fabric. 19. A device for weaving a fabric, comprising, in combination: a plurality of reed wires, each reed wire being separated from adjacent reed wires by a space; a plurality of dents, each dent comprising a reed wire and an adjacent space, wherein at least one of the dents has a width different from the width of other dents, providing a predetermined air permeability across a width of a fabric woven on the device. 20. A device for weaving a fabric, comprising, in combination: a plurality of reed wires, each reed wire being separated from adjacent reed wires by a space; a plurality of discs, each disc being separated from adjacent discs by a space a plurality of dents, each dent comprising one of a reed wire and a disc, and an adjacent space, wherein at least one of the dents has a width different from the width of other dents, providing a predetermined air permeability across a width of a fabric woven on the device. 21. A device for weaving a fabric, comprising, in combination: a plurality of lamellae, each lamella being separated from adjacent lamellae by a space; a plurality of dents, each dent comprising a lamella and an adjacent space, wherein at least one of the dents has a width different from the width of other dents, providing a predetermined ai
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