US2735446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boyce
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:47
CPC Classifications
F; F16; F16K; F16K23/00; B; B67; B67C; B67C3/00; B67C3/02; B67C3/20; B67C3/22; B67C3/26; B67C3/2637; B67C2003/2657; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86831; Y10T137/86847; Y10T137/86855
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
VALVE STRUCTURE COMPRISING A VALVE CHAMBER DEFINED BY A CYLINDRICAL WALL AND HAVING AN AXIALLY DISPOSED PASSAGE THEREIN, SAID CHAMBER WALL HAVING A PAIR OF ADJACENT PORTS EXTENDING RADIALLY THERETHROUGH, A SHAFT ROTATABLY MOUNTED IN SAID CHAMBER AND HAVING AN ECCENTRIC VALVE STEM PROJECTING THEREINTO, A CYLINDRICAL VALVE OF DEFORMABLE MATERIAL ROTATABLY MOUNTED ON SAID STEM, THE DISTANCE BETWEEN THE VALVE STEM AXIS AND THE WALL BETWEEN SAID PORTS BEING LESS THAN THE RADIUS OF AN UNCOMPRESSED PORTION OF THE CYLINDRICAL VALVE BY AN AMOUNT SUFFICIENT
Claim 2
Dependent Claim
86 words
VALVE STRUCTURE COMPRISING A VALVE CHAMBER DEFINED BY A CYLINDRICAL WALL AND HAVING AN AXIALLY DISPOSED PASSAGE THEREIN, SAID CHAMBER WALL HAVING A PAIR OF ADJACENT PORTS EXTENDING RADIALLY THERETHROUGH, A SHAFT ROTATABLY MOUNTED IN SAID CHAMBER AND HAVING AN ECCENTRIC VALVE STEM PROJECTING THEREINTO, A CYLINDRICAL VALVE OF DEFORMABLE MATERIAL ROTATABLY MOUNTED ON SAID STEM, THE DISTANCE BETWEEN THE VALVE STEM AXIS AND THE WALL BETWEEN SAID PORTS BEING LESS THAN THE RADIUS OF AN UNCOMPRESSED PORTION OF THE CYLINDRICAL VALVE BY AN AMOUNT SUFFICIENT
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |