IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0371178
(2003-02-20)
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발명자
/ 주소 |
- Madden, Jeremy S.
- Schnell, Richard E.
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출원인 / 주소 |
- Ross Operating Valve Company
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인용정보 |
피인용 횟수 :
14 인용 특허 :
2 |
초록
▼
A fluid control valve includes an adjustable soft start capability and pressure indicator device. The fluid control valve isolates an input port and connects an outlet port to an exhaust port when the fluid control valve is in its closed position. A system is provided for locking the fluid control v
A fluid control valve includes an adjustable soft start capability and pressure indicator device. The fluid control valve isolates an input port and connects an outlet port to an exhaust port when the fluid control valve is in its closed position. A system is provided for locking the fluid control valve in the closed position. The indicator device is used to provide an indication of the pressure within the outlet port to ensure safe operation.
대표청구항
▼
1. A fluid control valve comprising:a valve housing defining an inlet port, an outlet port and an exhaust port; a valve spool assembly movable with respect to said valve housing between an open condition and a closed condition, said inlet port being in communication with said outlet port when said v
1. A fluid control valve comprising:a valve housing defining an inlet port, an outlet port and an exhaust port; a valve spool assembly movable with respect to said valve housing between an open condition and a closed condition, said inlet port being in communication with said outlet port when said valve spool assembly is in said open position, said outlet port being in communication with said exhaust port when said valve spool assembly is in said closed position; delay means associated with said valve spool assembly for delaying full communication between said inlet port and said outlet port during a delay period beginning when said valve spool assembly is moved from said closed position to said open position, said fluid control valve operative to be fully opened or fully closed except during said delay period; and a fluid pressure indicator device fluidly coupled to said outlet port via said valve housing, said fluid pressure indicator device operable to indicate fluid pressure within said outlet port. 2. The fluid control valve according to claim 1 wherein said fluid pressure indicator is a pop-up type indicator, said pop-up type indicator is operable to extend when a first predetermined pressure is achieved within said outlet port and to retract when a second predetermined pressure is achieved within said outlet port.3. The fluid control valve according to claim 1 wherein said fluid pressure indicator is an electrical pressure switch, said electrical pressure switch is operable to produce an electrical signal only when a first pressure is achieved within said outlet port.4. The fluid control valve according to claim 1 wherein said fluid pressure indicator is chosen from the group consisting essentially of an aural indicator, an audible indicator, and a gauge indicator, which is operable to produce an output representative of a pressure within said outlet port.5. The fluid control valve according to claim 1 wherein said specified rate is adjustable.6. The fluid control valve according to claim 1 further comprising retaining means for releasably securing said valve spool assembly in said open or said closed condition.7. The fluid control valve according to claim 1 further comprising means for locking said valve spool in said closed position.8. The fluid control valve according to claim 1 wherein said indicator device is mounted through said valve housing and into said outlet port.9. The fluid control valve according to claim 1 wherein said delaying means comprises:a piston slidably disposed upon said valve spool assembly, said piston blocking said full communication between said inlet port and said outlet port when said valve spool assembly is initially moved from said closed position to said open position; and a by-pass passage disposed between said inlet port and said outlet port, said by-pass passage being opened when said valve spool assembly is initially moved from said closed to said open position, said by-pass passage allowing fluid to flow from said inlet port to said outlet port at a specified rate, said piston being moved to allow said full communication between said inlet port and said outlet port when fluid pressure at said outlet port reaches a specified value. 10. A fluid control valve comprising:a valve housing defining an inlet port, and outlet port and an exhaust port; a valve spool assembly movable with respect to said valve housing between an open condition and a closed condition; a first passage extending between said outlet port and said exhaust port; a second passage extending between said input port and said outlet port; a third passage extending between said input port and said outlet port; a piston slidably disposed upon said valve spool assembly, said piston closing said second passage and opening said third passage when said valve spool assembly is moved from said closed position to said open position, said piston opening said second passage a specified period of time after said valve spool assembly is moved to said open position, said fluid control valve operative to be fully opened or fully closed except during said specified period of time; and a fluid pressure indicator device fluidly coupled to said outlet port via said valve housing, said fluid pressure indicator device operable to indicate fluid pressure within said outlet port. 11. The fluid control valve according to claim 10 wherein said fluid pressure indicator is a pop-up type indicator, said pop-up type indicator is operable to extend when a first predetermined pressure is achieved within said outlet port and to retract when a second predetermined pressure is achieved within said outlet port.12. The fluid control valve according to claim 10 wherein said fluid pressure indicator is an electrical pressure switch, said electrical pressure switch is operable to produce an electrical signal only when a first pressure is achieved within said outlet port.13. The fluid control valve according to claim 10 wherein said fluid pressure indicator is chosen from the group consisting essentially of an aural indicator, an audible indicator, and a gauge indicator, which is operable to produce an output representative of a pressure within said outlet port.14. The fluid control valve according to claim 10 wherein said indicator device is mounted through said valve housing and into said outlet port.15. A fluid control valve comprising:a valve housing defining an inlet port, an outlet port and an exhaust port; a first passage extending through said housing connecting said outlet port to said exhaust port; a second passage extending through said housing connecting said input port to said outlet port; a valve spool assembly movable with respect to said valve housing between an open condition and a closed condition, said second passage being closed and said first passage being open when said valve spool assembly is in said closed condition, said first passage being closed when said valve spool assembly is in said open condition; a piston slidably disposed on said valve spool assembly, said piston movable between an open position and a blocked position, said piston being disposed in said blocked position to close said first passage when said valve spool assembly is first moved to said open condition; a third passage extending through said valve spool assembly connecting said input port to said outlet port, said third passage being open when said piston is in said blocked position to allow a specified flow of fluid between said input port and said outlet port such that fluid pressure increases in said outlet port at a rate slower than when said second passage is open, said piston moving from said blocked position to said open position after a delay period to open said second passage when said fluid pressure in said outlet port reaches a specified pressure, said fluid control valve operative to be fully opened or fully closed except during said delay period; and a fluid pressure indicator device fluidly coupled to said outlet port via said valve housing, said fluid pressure indicator device operable to indicate fluid pressure within said outlet port. 16. The fluid control valve according to claim 15 wherein said fluid pressure indicator is a pop-up type indicator, said pop-up type indicator is operable to extend when a first predetermined pressure is achieved within said outlet port and to retract when a second predetermined pressure is achieved within said outlet port.17. The fluid control valve according to claim 15 wherein said fluid pressure indicator is an electrical pressure switch, said electrical pressure switch is operable to produce an electrical signal only when a first pressure is achieved within said outlet port.18. The fluid control valve according to claim 15 wherein said fluid pressure indicator is chosen from the group consisting essentially of an aural indicator, an audible indicator, and a gauge indicator, which is operable to produce an output representative of a pressure within said outlet port.19. The fluid control valve according to claim 15 wherein said indicator device is mounted through said valve housing and into said outlet port.20. The fluid control valve according to claim 15 further comprising means for locking said valve spool in said closed position.
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