Patent US3576193A successfully refreshed from Google Patents.
US3576193A
Expired / Lapsed
US
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High flow regulating and relief valve
Assignee: Bendix Corp
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Filing: 1969-06-11
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Granted: 1971-04-27
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Expires: 1989-06-11
Abstract
Abstract A regulating and relief valve is disclosed characterized by being able to provide two stages of regulation. The first stage of regulation controls total fluid flow to the fluid pressure regulating second stage. This permits the valve to interface between a high-flow (or high-pressure) source and a utilization means requiring greatly reduced maximum pressures.
Inventors
- 👤 Neal B Rothfuss
- 👤 Frederick Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:04
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0663; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2607; Y10T137/261; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7795; Y10T137/7796; Y10T137/7801; Y10T137/7822; Y10T137/7823; Y10T137/7825; Y10T137/8593; Y10T137/87917
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
184 words
A combined regulating and relief valve for fluid systems comprising: valve housing means having first passage means adapted to transmit fluid flow therethrough; a valve seat disposed in said first passage means, said valve seat dividing said first passage means into an upstream portion and a downstream portion; regulating valve means disposed in said housing means in a flow controlling relationship with said valve seat and operative to regulate flow through said first passage means; means operative to control said regulating valve means, said operative means being responsive to pressure in said downstream portion of said first passage means; relief valve means disposed in said valve housing means operative to provide fluid relief to said downstream portion of said first passage means in the event that pressure therein exceeds a predetermined value; and flow-throttling means disposed in said valve housing means upstream of said valve seat operative to throttle flow through said valve seat independent of said regulating valve means in response to fluid pressure in said upstream portion of said first passage means in the event that pressure therein exceeds a predetermined value.
Claim 2
Dependent Claim
184 words
A combined regulating and relief valve for fluid systems comprising: valve housing means having first passage means adapted to transmit fluid flow therethrough; a valve seat disposed in said first passage means, said valve seat dividing said first passage means into an upstream portion and a downstream portion; regulating valve means disposed in said housing means in a flow controlling relationship with said valve seat and operative to regulate flow through said first passage means; means operative to control said regulating valve means, said operative means being responsive to pressure in said downstream portion of said first passage means; relief valve means disposed in said valve housing means operative to provide fluid relief to said downstream portion of said first passage means in the event that pressure therein exceeds a predetermined value; and flow-throttling means disposed in said valve housing means upstream of said valve seat operative to throttle flow through said valve seat independent of said regulating valve means in response to fluid pressure in said upstream portion of said first passage means in the event that pressure therein exceeds a predetermined value.
Claim 3
Dependent Claim
75 words
The valve as claim in claim 1 wherein said flow-throttling means comprise: a throttling cylinder reciprocally disposed about said regulating valve means operative to throttle flow through said valve seat independent of said regulating valve means; biasing means operative to bias said cylinder away from said valve seat; and second passage means operative to communicate fluid pressure from said upstream portion of said first passage means to said cylinder in opposition to said biasing means.
Claim 4
Dependent Claim
35 words
The valve as claimed in claim 2 wherein said throttling cylinder includes projections operative to limit the travel of said cylinder in opposition to the biasing means without terminating fluid communication through the valve seat.
References Cited (Backward Citations)
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US2002884A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |