Patent US3604679A successfully refreshed from Google Patents.
US3604679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve operator
Assignee: Cooper Industries LLC
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Filing: 1969-11-06
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Granted: 1971-09-14
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Expires: 1989-11-06
Abstract
Abstract There is disclosed an operator for opening and closing a valve in response to pressure differentials. The energy for providing the pressure differentials is derived from pressure variations of fluid within a flowline, and such fluid is exhausted to the flowline during operation of the valve.
Inventors
- 👤 John V Pennington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:24
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/363; F15; F15B; F15B1/00; F15B1/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
194 words
Apparatus for operating a valve by means of energy derived from a flowline subject to fluid pressure variations, comprising an actuator having a pair of oppositely reacting fluid pressure responsive surfaces and means for moving the closure member of the valve between alternate positions in response to the reaction of said surfaces to pressure differential thereacross, first conduit means for connecting one surface to the flowline, second conduit means for connecting the other surface to the flowline, means in said first and second conduit means intermediate their connections to said actuator surfaces and said flowline for selectively reversing the direction in which the pressure differential is effective across said actuator surfaces, an accumulator, means connecting the accumulator to the first conduit means intermediate said reversing means and the connection of the first conduit means to said flowline, and oneway valve means in the first conduit means intermediate its connections to the flowline and to the accumulator, whereby fluid pressure in the accumulator tends to approach one extreme value of said pressure variations to provide a differential between the accumulator pressure and another value of the flowline pressure for use in moving the closure member.
Claim 2
Dependent Claim
194 words
Apparatus for operating a valve by means of energy derived from a flowline subject to fluid pressure variations, comprising an actuator having a pair of oppositely reacting fluid pressure responsive surfaces and means for moving the closure member of the valve between alternate positions in response to the reaction of said surfaces to pressure differential thereacross, first conduit means for connecting one surface to the flowline, second conduit means for connecting the other surface to the flowline, means in said first and second conduit means intermediate their connections to said actuator surfaces and said flowline for selectively reversing the direction in which the pressure differential is effective across said actuator surfaces, an accumulator, means connecting the accumulator to the first conduit means intermediate said reversing means and the connection of the first conduit means to said flowline, and oneway valve means in the first conduit means intermediate its connections to the flowline and to the accumulator, whereby fluid pressure in the accumulator tends to approach one extreme value of said pressure variations to provide a differential between the accumulator pressure and another value of the flowline pressure for use in moving the closure member.
Claim 3
Dependent Claim
16 words
Apparatus of the character defined in claim 1, wherein said reversing means comprises a four-way valve.
Claim 4
Dependent Claim
24 words
Apparatus of the character defined in claim 1, wherein said one-way valve means includes means to prevent flow from the flowline to the accumulator.
Claim 5
Dependent Claim
24 words
Apparatus of the character defined in claim 2, wherein said one-way valve means includes means to prevent flow from the flowline to the accumulator.
Claim 6
Dependent Claim
192 words
Apparatus comprising a valve connectable in a flowline and having a closure member movable between alternate positions for opening and closing the flowline, an actuator having a pair of oppositely reacting fluid pressure responsive surfaces and means for so moving the closure member in respOnse to the reaction of said surfaces to pressure differential thereacross, first conduit means for connecting one surface to the flowline, second conduit means for connecting the other surface to the flowline, means in said first and second conduit means intermediate their connection to said actuator surfaces and said flowline for selectively reversing the direction in which the pressure differential is effective across said actuator surfaces, an accumulator connected to the first conduit means intermediate said reversing means and the connection of the first conduit means to said flowline, and one-way valve means in the first conduit means intermediate its connections to the flowline and to the accumulator, whereby fluid pressure in the accumulator tends to approach one extreme value of pressure variations in the flowline to provide a differential between the accumulator pressure and another value of the flowline pressure for use in moving the closure member.
Claim 7
Dependent Claim
192 words
Apparatus comprising a valve connectable in a flowline and having a closure member movable between alternate positions for opening and closing the flowline, an actuator having a pair of oppositely reacting fluid pressure responsive surfaces and means for so moving the closure member in respOnse to the reaction of said surfaces to pressure differential thereacross, first conduit means for connecting one surface to the flowline, second conduit means for connecting the other surface to the flowline, means in said first and second conduit means intermediate their connection to said actuator surfaces and said flowline for selectively reversing the direction in which the pressure differential is effective across said actuator surfaces, an accumulator connected to the first conduit means intermediate said reversing means and the connection of the first conduit means to said flowline, and one-way valve means in the first conduit means intermediate its connections to the flowline and to the accumulator, whereby fluid pressure in the accumulator tends to approach one extreme value of pressure variations in the flowline to provide a differential between the accumulator pressure and another value of the flowline pressure for use in moving the closure member.
Claim 8
Dependent Claim
26 words
Apparatus of the character defined in claim 5, wherein the first and second conduit means connect with the flowline on opposite sides of the closure member.
Claim 9
Dependent Claim
25 words
Apparatus of the character defined in claim 6, including means for providing said differential regardless of the direction in which fluid flows through the pipeline.
Claim 10
Dependent Claim
16 words
Apparatus of the character defined in claim 6, wherein said reversing means comprises a four-way valve.
Claim 11
Dependent Claim
24 words
Apparatus of the character defined in claim 8, wherein the one-way valve means includes means to prevent flow from the flowline to the accumulator.
Claim 12
Dependent Claim
16 words
Apparatus of the character defined in claim 5, wherein said reversing means comprises a four-way valve.
Claim 13
Dependent Claim
24 words
Apparatus of the character defined in claim 10, wherein the one-way valve means includes means to prevent flow from the flowline to the accumulator.
Claim 14
Dependent Claim
24 words
Apparatus of the character defined in claim 5, wherein the one-way valve means includes means to prevent flow from the flowline to the accumulator.
Claim 15
Dependent Claim
116 words
Apparatus for opening and closing a pipeline valve, comprising an actuator for moving the closure member of said valve, an accumulator, means including a four-way valve connecting a point on the upstream side of said valve to said actuator and said actuator to said accumulator for selectively admitting pressure fluid from said point to said actuator and exhausting pressure fluid from said actuator to the accumulator for temporarily storing same, whereby said valve may be urged toward opened or closed position, and means including a one-way valve connecting said accumulator with a point of the downstream side of said valve for exhausting said accumulator when the pressure at said downstream point falls below the accumulator pressure.
Claim 16
Dependent Claim
116 words
Apparatus for opening and closing a pipeline valve, comprising an actuator for moving the closure member of said valve, an accumulator, means including a four-way valve connecting a point on the upstream side of said valve to said actuator and said actuator to said accumulator for selectively admitting pressure fluid from said point to said actuator and exhausting pressure fluid from said actuator to the accumulator for temporarily storing same, whereby said valve may be urged toward opened or closed position, and means including a one-way valve connecting said accumulator with a point of the downstream side of said valve for exhausting said accumulator when the pressure at said downstream point falls below the accumulator pressure.
References Cited (Backward Citations)
US3044481A
Cited
US3156255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |