Patent US3349798A successfully refreshed from Google Patents.
US3349798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Allen variable valves
Assignee: —
•
Filing: —
•
Granted: 1967-10-31
•
Expires: 1984-10-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:16
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/078; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86549; Y10T137/86718; Y10T137/86734
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
134 words
A VALVE COMPRISING A HOUSING HAVING A FIRST CHAMBER AND A SECOND CHAMBER, A CYLINDRICAL SLEEVE SECURED TO THE HOUSING BETWEEN THE FIRST AND SECOND CHAMBERS, A CYLINDRICAL VALVE MEMBER DISPOSED WITHIN THE SLEEVE ABOUT A COMMON AXIS AND BEING AXIALLY AND ROTATIONALLY MOVABLE WITH RESPECT THERETO, SAID SLEEVE AND VALVE MEMBER EACH BEING INTEGRALLY PROVIDED WITH COOPERATING ORIFICE DEFINING MEANS FOR DEFINING A RECTANGULAR PASSAGEWAY BETWEEN THE FIRST AND SECOND CHAMBERS, RELEASABLY SECURABLE MEANS FOR SETTING THE WIDTH OF THE RECTANGULAR PASSAGEWAY AT A PRESELECTED VALUE, AND EXTERNALLY RESPONSIVE MEANS FOR VARYING THE HEIGHT OF THE RECTANGULAR PASSAGEWAY IN LINEAR RELATION TO EXTERNALLY DIRECTED MOVEMENT OF THE VALVE MEMBER AND IN WHICH THE HEIGHT OF THE RECTANGULAR PASSAGEWAY VARIES DIRECTLY WITH THE AXIAL POSITION OF THE VALVE MEMBER WITH RESPECT TO THE SLEEVE.
References Cited (Backward Citations)
US2642254A
Cited
US2145133A
Cited
US2212343A
Cited
US2171992A
Cited
US2261596A
Cited
US2197954A
Cited
US2917069A
Cited
US3213888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |