US3704727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control valve
Assignee: Individual
•
Filing: 1971-06-01
•
Granted: 1972-12-05
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Expires: 1991-06-01
Abstract
Abstract A fluid control valve for relieving line pressure. A shuttle valve having a longitudinal bore is reciprocably mounted in a housing. The housing is provided with a line pressure inlet having a metering orifice, a central chamber, a line pressure outlet and an exhaust outlet having a valve seat. The shuttle valve is normally biased to seal the exhaust outlet from the central chamber. An externally mounted solenoid coil provides a means for unseating the shuttle valve and venting the control chamber via the exhaust outlet.
Inventors
- 👤 Carmeli Adahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:32
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/044; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
150 words
A fluid control valve comprising: a housing having a central chamber, a fluid inlet adapted to be coupled to a fluid pressure source, a metering orifice connecting said central chamber and said fluid inlet, a first fluid outlet normally communicating with said fluid inlet via said central chamber for supplying fluid under pressure from said source to a utilization device, and a second fluid outlet open to an ambient pressure for venting said central chamber, said second fluid outlet having a valve seat; a shuttle valve reciprocably mounted in said housing and having a sealing surface for mating with said valve seat, said shuttle valve having a longitudinal bore for maintaining both ends thereof at said ambient pressure; means for biasing said valve in a position wherein said sealing surface is mated with said valve seat; and externally mounted means for unseating said valve in response to a control signal.
Claim 2
Dependent Claim
150 words
A fluid control valve comprising: a housing having a central chamber, a fluid inlet adapted to be coupled to a fluid pressure source, a metering orifice connecting said central chamber and said fluid inlet, a first fluid outlet normally communicating with said fluid inlet via said central chamber for supplying fluid under pressure from said source to a utilization device, and a second fluid outlet open to an ambient pressure for venting said central chamber, said second fluid outlet having a valve seat; a shuttle valve reciprocably mounted in said housing and having a sealing surface for mating with said valve seat, said shuttle valve having a longitudinal bore for maintaining both ends thereof at said ambient pressure; means for biasing said valve in a position wherein said sealing surface is mated with said valve seat; and externally mounted means for unseating said valve in response to a control signal.
Claim 3
Dependent Claim
22 words
The apparatus of claim 1 wherein said shuttle valve comprises a generally cylindrical member having an intermediate portion with a reduced diameter.
Claim 4
Dependent Claim
21 words
The apparatus of claim 2 wherein said shuttle valve sealing surface comprises an O-ring mounted circumferentially of a first end thereof.
Claim 5
Dependent Claim
13 words
The apparatus of claim 1 wherein said biasing means comprises a tensioned spring.
Claim 6
Dependent Claim
21 words
The apparatus of claim 1 wherein said unseating means comprises a solenoid coil positioned about a portion of said shuttle valve.
Claim 7
Dependent Claim
16 words
The apparatus of claim 1 wherein said fluid pressure source comprises a source of compressed air.
Claim 8
Dependent Claim
14 words
The apparatus of claim 1 wherein said utilization device comprises a pneumatic braking system.
Claim 9
Dependent Claim
23 words
The apparatus of claim 1 wherein said unseating means comprises a solenoid coil adapted to be coupled to a skid control signal generator.
References Cited (Backward Citations)
US2634751A
Cited
US3527257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |