Patent US734055A successfully refreshed from Google Patents.
Patent US92973A successfully refreshed from Google Patents.
Patent CH320243A successfully refreshed from Google Patents.
Patent US3168902A successfully refreshed from Google Patents.
US3168902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant volume flow control valve
Assignee: RTX Corp
•
Filing: 1961-09-05
•
Granted: 1965-02-09
•
Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 David R Pearl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:54
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/263; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7788; Y10T137/7837; Y10T137/7869
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A VALVE ADAPTED TO CONTROL THE FLOW OF FLUID AT A CONSTANT VALUE COMPRISING A HOUSING HAVING AN INLET AND OUTLET, A FIXED METERING ORIFICE DISPOSED BETWEEN THE INLET AND OUTLET, ADJUSTING MEANS INCLUDING A MOVABLE MEMBER ADAPTED TO MOVE IN THE VALVE FOR RESTRICTING FLUID FLOW FOR MAINTAINING THE PRESSURE DROP CROSS THE ORIFICE AT A CONSTANT VALUE, A CONTOURED PLUG EXTENDING THROUGH SAID ORIFICE AND CONNECTED TO SAID MOVABLE MEMBER AND MOVEABLE IN RESPONSE TO SAID ADJUSTING MEANS.
Claim 2
Dependent Claim
80 words
A VALVE ADAPTED TO CONTROL THE FLOW OF FLUID AT A CONSTANT VALUE COMPRISING A HOUSING HAVING AN INLET AND OUTLET, A FIXED METERING ORIFICE DISPOSED BETWEEN THE INLET AND OUTLET, ADJUSTING MEANS INCLUDING A MOVABLE MEMBER ADAPTED TO MOVE IN THE VALVE FOR RESTRICTING FLUID FLOW FOR MAINTAINING THE PRESSURE DROP CROSS THE ORIFICE AT A CONSTANT VALUE, A CONTOURED PLUG EXTENDING THROUGH SAID ORIFICE AND CONNECTED TO SAID MOVABLE MEMBER AND MOVEABLE IN RESPONSE TO SAID ADJUSTING MEANS.
References Cited (Backward Citations)
US1538427A
Cited
US1468434A
Cited
US1923595A
Cited
US2288297A
Cited
US2951501A
Cited
US2981283A
Cited
US2968315A
Cited
US2973778A
Cited
US3085590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |