US3165386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum valve
Assignee: Thermovac Industries Corp
•
Filing: 1963-02-12
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Granted: 1965-01-12
•
Expires: 1983-02-12
Abstract
No abstract record available.
Inventors
- 👤 Kapeker Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:45
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F16; F16K; F16K51/00; F16K51/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN ASSOCIATION WITH A FREEZE DRYER AND A FLASK OF THE TYPES DESCRIBED, A VACUUM VALVE FORMED OF A RESILIENT MATERIAL COMPRISING A FIRST TUBE PROVIDED OPEN AT ONE END AND CLOSED AT ITS OTHER END, ADAPTED TO BE SLIDABLY MOUNTED UPON AND IN AIR-TIGHT ENGAGEMENT WITH A PORT OF THE FREEZE DRYER, AND A SECOND TUBE INTEGRAL WITH THE FIRST BUE AT A POINT INTERMEDIATE THE ENDS OF THE FIRST TUBE AND EXTENDING THEREFROM AT AN ANGEL THERETO, THE SECOND TUBE OPENING INTO THE FIRST UBE AT THEIR POINT OF UNION AND PROVIDED OPEN AT ITS FREE END TO RECEIVE THE NECK OF THE FLASK IN AIR-TIGHT ENGAGEMENT THEREWITH,
Claim 2
Dependent Claim
110 words
IN ASSOCIATION WITH A FREEZE DRYER AND A FLASK OF THE TYPES DESCRIBED, A VACUUM VALVE FORMED OF A RESILIENT MATERIAL COMPRISING A FIRST TUBE PROVIDED OPEN AT ONE END AND CLOSED AT ITS OTHER END, ADAPTED TO BE SLIDABLY MOUNTED UPON AND IN AIR-TIGHT ENGAGEMENT WITH A PORT OF THE FREEZE DRYER, AND A SECOND TUBE INTEGRAL WITH THE FIRST BUE AT A POINT INTERMEDIATE THE ENDS OF THE FIRST TUBE AND EXTENDING THEREFROM AT AN ANGEL THERETO, THE SECOND TUBE OPENING INTO THE FIRST UBE AT THEIR POINT OF UNION AND PROVIDED OPEN AT ITS FREE END TO RECEIVE THE NECK OF THE FLASK IN AIR-TIGHT ENGAGEMENT THEREWITH,
References Cited (Backward Citations)
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Cited
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US2389452A
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US2749002A
Cited
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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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |