Patent US3559679A successfully refreshed from Google Patents.
US3559679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge valve
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1968-11-26
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Granted: 1971-02-02
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Expires: 1988-11-26
Abstract
Abstract A hinge valve is described which controls fluid flow by means of movable flap sections which are actuated by fluid pressure on associated linkage so as to move from a closed position to an opened position - or vice versa.
Inventors
- 👤 Johannes R Smirra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:09
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/223; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/7869; Y10T137/7875; Y10T137/8158; Y10T137/8225; Y10T137/8242; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87491
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
191 words
A flow control valve for controlling the flow of fluid in a conduit, that improvement which comprises: a support member in said conduit, said support member extending substantially diametrically across the interior of said conduit, at least two-flap members pivotally attached to said support member, said flap members being adapted to move from an open position to allow flow of fluid through said conduit to a closed position to prevent flow of fluid, said flap members when in an open position presenting substantially the same cross-sectional area as said support member to said fluid flow; and actuating means adapted to move said flap members from one of said positions to the other of said positions And to positions intermediate thereof, said actuating means being located in said support member whereby fluid flow through said conduit is unobstructed by said actuating means, said at actuating means comprising linkage connected to said flap members and further comprising a piston pivotally attached to said linkage, and means to exert fluid pressure against said piston whereby to actuate said linkage and said flap members from one of said positions to the other of said position.
Claim 2
Dependent Claim
191 words
A flow control valve for controlling the flow of fluid in a conduit, that improvement which comprises: a support member in said conduit, said support member extending substantially diametrically across the interior of said conduit, at least two-flap members pivotally attached to said support member, said flap members being adapted to move from an open position to allow flow of fluid through said conduit to a closed position to prevent flow of fluid, said flap members when in an open position presenting substantially the same cross-sectional area as said support member to said fluid flow; and actuating means adapted to move said flap members from one of said positions to the other of said positions And to positions intermediate thereof, said actuating means being located in said support member whereby fluid flow through said conduit is unobstructed by said actuating means, said at actuating means comprising linkage connected to said flap members and further comprising a piston pivotally attached to said linkage, and means to exert fluid pressure against said piston whereby to actuate said linkage and said flap members from one of said positions to the other of said position.
Claim 3
Dependent Claim
31 words
A flow control valve according to claim 1 wherein said flap members include magnet means associated with said flap members whereby to prevent chattering of said flap members during fluid flow.
Claim 4
Dependent Claim
45 words
A flow control valve according to claim 1 and further including means on at least one of said flap members adapted to actuate a proximity switch and further including a proximity switch associated with said conduit whereby to indicate the position of said flap members.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |