US3112759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for vacuum systems
Assignee: RESITRON LAB Inc
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Filing: 1962-06-15
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Granted: 1963-12-03
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Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 Lucia Victor E De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:26
CPC Classifications
F; F16; F16K; F16K51/00; F16K51/02; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6031; Y10T137/6035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A VALVE ADAPTED FOR USE IN HIGH VACUUM SYSTEMS COMPRISING A CYLINDRICAL GLASS BODY, MEANS WITHIN THE BODY FORMING A FLAT VALVE SEAT, A CYLINDRICAL METAL BAND FUSED TO ONE END OF THE GLASS BODY AND PROTRUDING THEREFROM, A CUP-SHAPED MEMBER FITTING WITHIN SAID BAND CONTIGUOUSLY THEREWITH, SAID BAND AND CUP-SHAPED MEMBER BEING WELDED TOGETHER ADJACENT THE OUTER ENDS THEREOF FORMING A SEAL WHEREBY THE WELDED END PART MAY BE
Claim 2
Dependent Claim
70 words
A VALVE ADAPTED FOR USE IN HIGH VACUUM SYSTEMS COMPRISING A CYLINDRICAL GLASS BODY, MEANS WITHIN THE BODY FORMING A FLAT VALVE SEAT, A CYLINDRICAL METAL BAND FUSED TO ONE END OF THE GLASS BODY AND PROTRUDING THEREFROM, A CUP-SHAPED MEMBER FITTING WITHIN SAID BAND CONTIGUOUSLY THEREWITH, SAID BAND AND CUP-SHAPED MEMBER BEING WELDED TOGETHER ADJACENT THE OUTER ENDS THEREOF FORMING A SEAL WHEREBY THE WELDED END PART MAY BE
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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |