US3133723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas valves
Assignee: Walworth Co
•
Filing: 1962-09-27
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Granted: 1964-05-19
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Expires: 1982-09-27
Abstract
No abstract record available.
Inventors
- 👤 Edward J Goldman
- 👤 Lee C Babb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:09
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0457; F16K5/0478
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A NON-LUBRICATED GAS VALVE OF THE PLUG VALVE TYPE, COMPRISING A METAL VALVE BODY MEMBER HAVING AN ELONGATED GAS PASSAGEWAY THERETHROUGH INTERCEPTING AN ELONGATED PLUG-RECEIVING OPENING THEREIN, AN ELONGATED METAL PLUG MEMBER DISPOSED IN SAID PLUG-RECEIVING OPENING FOR ROTATION ABOUT AN AXIS AND HAVING AN ELONGATED FLOW PASSAGEWAY THERETHROUGH EXTENDING SUBSTANTIALLY PERPENDICULARLY TO SAID AXIS, ONE OF SAID MEMBERS BEING CAST WITH AN ELONGATED ENDLESS GROOVE THEREIN IN POSITION TO SURROUND THE PASSAGEWAY THROUGH THE OTHER OF SAID MEMBERS WHEN THE VALVE IS IN A CLOSED CONDITION, THE ELONGATED PASSAGEWAY SURROUNDED BY SAID GROOVE HAVING NARROWER ENDS WHICH ARE SHAPED TO TERMINATE SUBSTANTIALLY AS POINTS, AND AN ENDLESS GASKET OF ELASTOMERIC MATERIAL BONDED DI-
Claim 2
Dependent Claim
114 words
A NON-LUBRICATED GAS VALVE OF THE PLUG VALVE TYPE, COMPRISING A METAL VALVE BODY MEMBER HAVING AN ELONGATED GAS PASSAGEWAY THERETHROUGH INTERCEPTING AN ELONGATED PLUG-RECEIVING OPENING THEREIN, AN ELONGATED METAL PLUG MEMBER DISPOSED IN SAID PLUG-RECEIVING OPENING FOR ROTATION ABOUT AN AXIS AND HAVING AN ELONGATED FLOW PASSAGEWAY THERETHROUGH EXTENDING SUBSTANTIALLY PERPENDICULARLY TO SAID AXIS, ONE OF SAID MEMBERS BEING CAST WITH AN ELONGATED ENDLESS GROOVE THEREIN IN POSITION TO SURROUND THE PASSAGEWAY THROUGH THE OTHER OF SAID MEMBERS WHEN THE VALVE IS IN A CLOSED CONDITION, THE ELONGATED PASSAGEWAY SURROUNDED BY SAID GROOVE HAVING NARROWER ENDS WHICH ARE SHAPED TO TERMINATE SUBSTANTIALLY AS POINTS, AND AN ENDLESS GASKET OF ELASTOMERIC MATERIAL BONDED DI-
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |