US3113590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve
Assignee: Power Control Products Inc
•
Filing: 1961-05-18
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Granted: 1963-12-10
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:06
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F16K11/0716; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B13/0402; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A CONTROL VALVE COMPRISING A HOUSING HAVING A CYLINDRICAL BORE THEREIN, A CYLINDRICALLY SHAPED SLIDE VALVE SLIDABLE IN SAID CYLINDRICAL BORE, END CAPS MOUNTED ON SAID HOUSING OVER THE ENDS OF SAID SLIDE VALVE, EACH END OF SAID SLIDE VALVE HAVING A REDUCED DIAMETER EXTENSION, EACH OF SAID REDUCED DIAMETER END EXTENSIONS HAVING AN ANNULAR GROOVE THEREIN, RUBBER O RINGS POSITIONED IN EACH OF SAID ANNULAR GROOVES IN THE END EXTENSIONS, SAID RUBBER O RINGS HAVING A CROSS SECTIONAL EXTENT EXCEEDING THE DEPTH OF SAID ANNULAR GROOVES, EACH OF SAID END CAPS HAVING AN INWARDLY PROJECTING ANNULAR FLANGE SUBSTANTIALLY EQUAL IN DIAMETER TO THE DIAMETER OF THE SLIDE VALVE END EXTENSIONS, SAID RUBBER O RINGS EFFECTING A POSITIVE SEAL BETWEEN THE END EXTENSIONS AND THE INWARDLY PROJECTING ANNULAR FLANGES, SAID SLIDE VALVE HAVING LONGITUDINALLY SPACED APART ANNULAR GROOVES, SAID HOUSING HAVING FLUID INLET AND OUTLET PASSAGES THEREIN FOR COMMUNICATION WITH CERTAIN OF THE ANNULAR GROOVES IN THE SLIDE VALVE, SAID END CAPS DEFINING FLUID CHAMBERS AND HAVING BLEEDER MEANS, AND SAID CONTROL VALVE HAVING PASSAGE MEANS JOINING SAID END CAP FLUID CHAMBERS.
Claim 2
Dependent Claim
182 words
A CONTROL VALVE COMPRISING A HOUSING HAVING A CYLINDRICAL BORE THEREIN, A CYLINDRICALLY SHAPED SLIDE VALVE SLIDABLE IN SAID CYLINDRICAL BORE, END CAPS MOUNTED ON SAID HOUSING OVER THE ENDS OF SAID SLIDE VALVE, EACH END OF SAID SLIDE VALVE HAVING A REDUCED DIAMETER EXTENSION, EACH OF SAID REDUCED DIAMETER END EXTENSIONS HAVING AN ANNULAR GROOVE THEREIN, RUBBER O RINGS POSITIONED IN EACH OF SAID ANNULAR GROOVES IN THE END EXTENSIONS, SAID RUBBER O RINGS HAVING A CROSS SECTIONAL EXTENT EXCEEDING THE DEPTH OF SAID ANNULAR GROOVES, EACH OF SAID END CAPS HAVING AN INWARDLY PROJECTING ANNULAR FLANGE SUBSTANTIALLY EQUAL IN DIAMETER TO THE DIAMETER OF THE SLIDE VALVE END EXTENSIONS, SAID RUBBER O RINGS EFFECTING A POSITIVE SEAL BETWEEN THE END EXTENSIONS AND THE INWARDLY PROJECTING ANNULAR FLANGES, SAID SLIDE VALVE HAVING LONGITUDINALLY SPACED APART ANNULAR GROOVES, SAID HOUSING HAVING FLUID INLET AND OUTLET PASSAGES THEREIN FOR COMMUNICATION WITH CERTAIN OF THE ANNULAR GROOVES IN THE SLIDE VALVE, SAID END CAPS DEFINING FLUID CHAMBERS AND HAVING BLEEDER MEANS, AND SAID CONTROL VALVE HAVING PASSAGE MEANS JOINING SAID END CAP FLUID CHAMBERS.
References Cited (Backward Citations)
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US2847879A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |