Patent US3132838A successfully refreshed from Google Patents.
US3132838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug valve having an auxiliary stem seal
Assignee: Continental Manufacturing Co
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Filing: 1961-05-25
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Granted: 1964-05-12
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Expires: 1981-05-25
Abstract
No abstract record available.
Inventors
- 👤 Russell G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10; F16K41/12; F16K41/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PLUG VALVE COMPRISING A BODY MEMBER HAVING AN OPEN-TOPPED CHAMBER THEREIN AND INLET AND OUTLET FLOW PASSAGE, A VALVING MEMBER HAVING AN UPPER CONTACT FACE, AND A HEAT DISPERSABLE SEALING SLEEVE LINING THE CHAMBER OF THE BODY MEMBER, SAID VALVING MEMBER AND SAID SLEEVE LINING INCLUDING A THROUGH FLOW PASSAGE, THE CHAMBER BEING LINED BY THE SEALING SLEEVE AND SUPPORTING THE VALVING MEMBER FOR ROTATION THEREIN TO PLACE THE FLOW PASSAGE OF SAID VALVING MEMBER IN AND OUT OF COMMUNICATION WITH THE FLOW PASSAGES OF THE SLEEVE AND BODY MEMBER, FLUID UNDER PRESSURE BEING ADMITTED INTO THE VALVE CHAMBER BENEATH AND AGAINST THE BOTTOM OF THE VALVING MEMBER TENDING TO ELEVATE THE VALVING MEMBER UPON HEAT-DISPERSION OF SAID SUPPORTING SLEEVE, A STEM EXTENDING AXIALLY FROM THE VALVING MEMBER AND THROUGH THE OPEN TOP OF THE BODY MEMBER CHAMBER FOR ROTATING THE VALVING MEMBER, A HEAT DISPERSABLE SEALING DISC SURROUNDING THE STEM AND HAVING
Claim 2
Dependent Claim
154 words
A PLUG VALVE COMPRISING A BODY MEMBER HAVING AN OPEN-TOPPED CHAMBER THEREIN AND INLET AND OUTLET FLOW PASSAGE, A VALVING MEMBER HAVING AN UPPER CONTACT FACE, AND A HEAT DISPERSABLE SEALING SLEEVE LINING THE CHAMBER OF THE BODY MEMBER, SAID VALVING MEMBER AND SAID SLEEVE LINING INCLUDING A THROUGH FLOW PASSAGE, THE CHAMBER BEING LINED BY THE SEALING SLEEVE AND SUPPORTING THE VALVING MEMBER FOR ROTATION THEREIN TO PLACE THE FLOW PASSAGE OF SAID VALVING MEMBER IN AND OUT OF COMMUNICATION WITH THE FLOW PASSAGES OF THE SLEEVE AND BODY MEMBER, FLUID UNDER PRESSURE BEING ADMITTED INTO THE VALVE CHAMBER BENEATH AND AGAINST THE BOTTOM OF THE VALVING MEMBER TENDING TO ELEVATE THE VALVING MEMBER UPON HEAT-DISPERSION OF SAID SUPPORTING SLEEVE, A STEM EXTENDING AXIALLY FROM THE VALVING MEMBER AND THROUGH THE OPEN TOP OF THE BODY MEMBER CHAMBER FOR ROTATING THE VALVING MEMBER, A HEAT DISPERSABLE SEALING DISC SURROUNDING THE STEM AND HAVING
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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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |