US3379210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High vacuum valve
Assignee: Varian Medical Systems Inc
•
Filing: 1962-08-06
•
Granted: 1968-04-23
•
Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 William R Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:39
CPC Classifications
F; F16; F16K; F16K51/00; F16K51/02; F16K41/00; F16K41/10; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6154
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A VALVE COMPRISING A CYLINDRICAL TUBULAR VALVE BODY, A CYLINDRICAL INLET CONDUIT HAVING A VALVE SEAT FORMED AT ONE END PROTRUDING FROM ONE END OF SAID BODY AND WELDED IN GAS-TIGHT RELATION THERETO WITH SAID SEAT DISPOSED WITHIN SAID BODY, A CYLINDRICAL OUTLET CONDUIT PROTRUDING FROM THE SIDE OF SAID BODY, AND A VALVE STEM ASSEMBLY DISPOSED TO MOVE AXIALLY WITHIN SAID BODY, SAID VALVE STEM ASSEMBLY COMPRISING AN INTERNALLY THREADED NUT WELDED GAS-TIGHT TO THE OTHER END OF SAID BODY, AN EXTERNALLY THREADED SLEEVE THREADED INTO SAID NUT, A PLUNGER ROTATABLY ATTACHED TO SAID SLEEVE BY AN INTERNALLY AND EXTERNALLY THREADED SWIVEL BOLT MEANS COMPRISING A CLAMPING BOLT THREADED THROUGH SAID SWIVEL BOLT TO PREVENT BACKLASH, SAID PLUNGER HAGVING A RECESS FACING SAID VALVE SEAT, A RIGID-FLAT-METAL GASKET DISPOSED WITHIN SAID RECESS, AND A METAL BELLOWS WELDED GAS-TIGHT AT ONE END TO SAID NUT MEMBER AND AT THE OTHER END TO SAID PLUNGER, SAID VALVE SEAT HAVING A CONICAL ANNULAR SURFACE MAKING AN ANGLE WITH SAID GASKET, SAID ANGLE HAVING A VALUE BETWEEN 10* AND 35*.
Claim 2
Dependent Claim
177 words
A VALVE COMPRISING A CYLINDRICAL TUBULAR VALVE BODY, A CYLINDRICAL INLET CONDUIT HAVING A VALVE SEAT FORMED AT ONE END PROTRUDING FROM ONE END OF SAID BODY AND WELDED IN GAS-TIGHT RELATION THERETO WITH SAID SEAT DISPOSED WITHIN SAID BODY, A CYLINDRICAL OUTLET CONDUIT PROTRUDING FROM THE SIDE OF SAID BODY, AND A VALVE STEM ASSEMBLY DISPOSED TO MOVE AXIALLY WITHIN SAID BODY, SAID VALVE STEM ASSEMBLY COMPRISING AN INTERNALLY THREADED NUT WELDED GAS-TIGHT TO THE OTHER END OF SAID BODY, AN EXTERNALLY THREADED SLEEVE THREADED INTO SAID NUT, A PLUNGER ROTATABLY ATTACHED TO SAID SLEEVE BY AN INTERNALLY AND EXTERNALLY THREADED SWIVEL BOLT MEANS COMPRISING A CLAMPING BOLT THREADED THROUGH SAID SWIVEL BOLT TO PREVENT BACKLASH, SAID PLUNGER HAGVING A RECESS FACING SAID VALVE SEAT, A RIGID-FLAT-METAL GASKET DISPOSED WITHIN SAID RECESS, AND A METAL BELLOWS WELDED GAS-TIGHT AT ONE END TO SAID NUT MEMBER AND AT THE OTHER END TO SAID PLUNGER, SAID VALVE SEAT HAVING A CONICAL ANNULAR SURFACE MAKING AN ANGLE WITH SAID GASKET, SAID ANGLE HAVING A VALUE BETWEEN 10* AND 35*.
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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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |