US3592227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure control valve unit
Assignee: Individual
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Filing: 1969-07-18
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Granted: 1971-07-13
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Expires: 1989-07-18
Abstract
Abstract A control valve for switching high-pressure fluid from a first outlet to a second outlet, to position a piston in response to a pressure signal. The pressure signal moves a diaphragm to permit the high pressure to be selectively admitted to opposed inner chambers. A movable wall separates each inner chamber. The movable walls are connected by a shaft retained in a bore connected to the high-pressure fluid. Low pressure from the atmosphere controlled by an exhaust valve is communicated to the second outlet simultaneously with high pressure being communicated to the first outlet. Upon the outlet pressure being received by the inner chambers a pressure differential is created across the movable walls causing a valve to seat on the bore from the high pressure permitting high pressure to the other inner chamber. Once the shift has occurred, the pressure differential between the inner chamber will retain the movable walls in that operative position until a subsequent pressure signal is received.
Inventors
- 👤 Charles Rivolier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:31
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/87169; Y10T137/87193
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
264 words
Valve means movable in response to a pressure signal from a first position, where fluid is communicated from a first source to a first outlet and from a second source to a second outlet, to a second position, where fluid is communicated from said first source to said second outlet and said second source to said first outlet, said valve means comprising: a housing having first and second inner chambers; a first wall member dividing said first inner chamber into a first fluid flow chamber and a first control chamber, said first fluid flow chamber being connected to said first outlet; a second wall member dividing said second chamber into a second flow chamber and a second control chamber, said second flow chamber being connected to said second outlet, said first and second control chambers receiving said pressure signal, said first and second inner chambers having bleed passages to vent excess fluid upon movement; means secured to said first and second wall members for alternatively opening and closing communication between said first source of fluid and said first and second flow chambers in response to said signal creating a pressure differential across said first and second wall members; and control means responsive to the pressure differential between said first flow chamber and said second flow chamber for alternatively opening and closing communication between said second source of fluid and said second and first flow chamber, said pressure differential between said first and second flow chambers adapted to retain said first and second walls in a stationary position until a subsequent pressure signal is received.
Claim 2
Dependent Claim
264 words
Valve means movable in response to a pressure signal from a first position, where fluid is communicated from a first source to a first outlet and from a second source to a second outlet, to a second position, where fluid is communicated from said first source to said second outlet and said second source to said first outlet, said valve means comprising: a housing having first and second inner chambers; a first wall member dividing said first inner chamber into a first fluid flow chamber and a first control chamber, said first fluid flow chamber being connected to said first outlet; a second wall member dividing said second chamber into a second flow chamber and a second control chamber, said second flow chamber being connected to said second outlet, said first and second control chambers receiving said pressure signal, said first and second inner chambers having bleed passages to vent excess fluid upon movement; means secured to said first and second wall members for alternatively opening and closing communication between said first source of fluid and said first and second flow chambers in response to said signal creating a pressure differential across said first and second wall members; and control means responsive to the pressure differential between said first flow chamber and said second flow chamber for alternatively opening and closing communication between said second source of fluid and said second and first flow chamber, said pressure differential between said first and second flow chambers adapted to retain said first and second walls in a stationary position until a subsequent pressure signal is received.
Claim 3
Dependent Claim
248 words
A two-position fluid pressure valve mechanism movable in response to a pressure signal from a first position, where fluid communication is established between high and low fluid pressure sources and separate outlets, to a second position where the communications are reversed, said mechanism comprising: a housing having first and second adjacent inner chambers having opposite ends sealed by a pair of opposed pressure responsive movable walls, said walls being attached to a movable assembly for alternatively opening and closing a bore communication between said high fluid source and said first and second inner chambers, one of said separate outlets being connected to said first inner chamber and the other to said second inner chamber, said first and second chambers being connected to said low pressure source by bleed passages for preventing a fluid lock upon movement from said first position to said second position; and exhaust means responsive to the pressure differential between the first and second inner chambers for alternatively opening and closing communication between said first and second chambers and said low-pressure source for establishing low pressure in said second chamber while high pressure is communicated to said first chamber, said pressure differential between said first and second inner chambers adapted to act on the opposed inner surfaces of said movable walls for retaining said movable assembly in said first position until a pressure signal applied from the outside of said first and second inner chambers to saiD movable walls initiates movement to said second position.
Claim 4
Dependent Claim
248 words
A two-position fluid pressure valve mechanism movable in response to a pressure signal from a first position, where fluid communication is established between high and low fluid pressure sources and separate outlets, to a second position where the communications are reversed, said mechanism comprising: a housing having first and second adjacent inner chambers having opposite ends sealed by a pair of opposed pressure responsive movable walls, said walls being attached to a movable assembly for alternatively opening and closing a bore communication between said high fluid source and said first and second inner chambers, one of said separate outlets being connected to said first inner chamber and the other to said second inner chamber, said first and second chambers being connected to said low pressure source by bleed passages for preventing a fluid lock upon movement from said first position to said second position; and exhaust means responsive to the pressure differential between the first and second inner chambers for alternatively opening and closing communication between said first and second chambers and said low-pressure source for establishing low pressure in said second chamber while high pressure is communicated to said first chamber, said pressure differential between said first and second inner chambers adapted to act on the opposed inner surfaces of said movable walls for retaining said movable assembly in said first position until a pressure signal applied from the outside of said first and second inner chambers to saiD movable walls initiates movement to said second position.
Claim 5
Dependent Claim
64 words
The valve mechanism, as recited in claim 2, wherein said exhaust means includes: a shaft retained in a bore extending through a wall separating said first and second inner chambers, said bore communicating with said low pressure source, said shaft having face members on each end for seating on said wall in response to the pressure differential between said first and second inner chambers.
Claim 6
Dependent Claim
34 words
The valve mechanism, as recited in claim 3, wherein each of said movable walls have equal surface areas for reacting to the same intensity in moving from said first position to said second position.
Claim 7
Dependent Claim
89 words
The valve mechanism, as recited in claim 1, including: a first pilot chamber in communication with said first inner chamber; and a second pilot chamber in communication with said second inner chamber, said first and second pilot chambers being connected to said high pressure source through a passage in said housing and to separate low pressure sources through separate passages, said pressure signal for operating said valve mechanism being obtained by selectively closing communications between one of said separate low pressure sources and said first and second control chambers.
Claim 8
Dependent Claim
73 words
The valve mechanism, as recited in claim 5, wherein said high-pressure passage includes: a restriction and each of said low pressure passages contains a check valve, said check valves being selectively opened and closed for preventing low pressure communication to said first and second pilot chambers while permitting high pressure to said first and second pilot chambers through said restriction causing a pressure differential across said movable walls for moving said movable assembly.
Claim 9
Dependent Claim
39 words
The valve mechanism, as recited in claim 6, wherein the effective fluid flow area of the fore of said exhaust means is substantially smaller than that of the bore communicating high pressure to the first and second inner chambers.
Claim 10
Dependent Claim
32 words
The valve mechanism, as recited in claim 7, wherein the effective flow area of said bleed passages is small as compared to the bores of said exhaust means and said high pressure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |