Patent US3288374A successfully refreshed from Google Patents.
US3288374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow control apparatus
Assignee: Rolls Royce PLC
•
Filing: 1965-04-08
•
Granted: 1966-11-29
•
Expires: 1985-04-08
Abstract
No abstract record available.
Inventors
- 👤 Francis J Colville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:20
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/12; F02K1/1207; F02K1/1215; F02K1/1223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
FLUID FLOW CONTROL APPARATUS COMPRSIING FIXED STRUCTURE, A FLUID CONDUIT EXTENDING THERETHROUGH, AT LEAST ONE FLAP WHICH IS PIVOTED UP THE FIXED STRUCTURE AND WHICH CONTROLS FLOW THROUGH THE FLUID CONDUIT, A PAIR OF SIMILAR, ADJACENT, CONCENTRIC, ANNULAR ROTATABLE MEMBERS FOR EACH SAID FLAP, TWO SIMILAR LINKS FOR EACH SAID FLAP WHICH ARE PIVOTALLY CONNECTED TO THEIR FLAP AT AT LEAST ONE POINT REMOTE FROM THE SAID FIXED STRUCTURE AND WHICH ARE RESPECTIVELY PIVOTALLY CONNECTED TO THEIR TWO DIFFERENT ROTATABLE MEMBERS, AND MEANS FOR SIMULTANEOUSLY ROTATING THE TWO ROTATABLE MEMBERS OF EACH SAID PAIR THEREOF IN OPPOSITE ANGULAR SENSES TO EFFECT PIVOTAL MOVEMENT OF THE RESPECTIVE FLAP, WHEREBY TO ALTER THE FLOW THROUGH SAID FLUID CONDUIT.
Claim 2
Dependent Claim
116 words
FLUID FLOW CONTROL APPARATUS COMPRSIING FIXED STRUCTURE, A FLUID CONDUIT EXTENDING THERETHROUGH, AT LEAST ONE FLAP WHICH IS PIVOTED UP THE FIXED STRUCTURE AND WHICH CONTROLS FLOW THROUGH THE FLUID CONDUIT, A PAIR OF SIMILAR, ADJACENT, CONCENTRIC, ANNULAR ROTATABLE MEMBERS FOR EACH SAID FLAP, TWO SIMILAR LINKS FOR EACH SAID FLAP WHICH ARE PIVOTALLY CONNECTED TO THEIR FLAP AT AT LEAST ONE POINT REMOTE FROM THE SAID FIXED STRUCTURE AND WHICH ARE RESPECTIVELY PIVOTALLY CONNECTED TO THEIR TWO DIFFERENT ROTATABLE MEMBERS, AND MEANS FOR SIMULTANEOUSLY ROTATING THE TWO ROTATABLE MEMBERS OF EACH SAID PAIR THEREOF IN OPPOSITE ANGULAR SENSES TO EFFECT PIVOTAL MOVEMENT OF THE RESPECTIVE FLAP, WHEREBY TO ALTER THE FLOW THROUGH SAID FLUID CONDUIT.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |