US3192946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breather check valves
Assignee: Heil Co
•
Filing: 1963-04-15
•
Granted: 1965-07-06
•
Expires: 1983-04-15
Abstract
No abstract record available.
Inventors
- 👤 Terje T Wiersholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1789; Y10T137/6851; Y10T137/7036; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7842
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN AN INSULATED FLUID TANK FOR CRYOGENIC SERVICE HAVING A RELIEF VALVE WITH AN EXTERNAL PORTION INCLUDING A VALVE MEMBER, SUPPORTED DIRECTLY ON SAID TANK, A PROTECTING COVER FORMED OF MATERIAL OF LOW THERMAL CONDUCTIVITY SUPPORTED IN A POSITION SURROUNDING AND COVERING SAID VALVE MEMBER AND PROJECTING EXTERNALLY OF THE TANK THEREFROM, VENT MEANS CARRIED BY SAID PROTECTING COVERING AND HAVING AN INLET END WITHIN THE INTERIOR OF SAID PROJECTING COVER AND HAVING AN OUTLET END COMMUNICATING WITH THE ATMOSPHERE CONSTITUTING THE SOLE MEANS FOR COMMUNICATION BETWEEN THE INTERIOR OF THE COVER AND THE ATMOSHPERE, AND MEANS OUTWARDLY OF SAID VENT MEANS NORMALLY DIRECTLY CLOSING SAID INLET END OF SAID VENT MEANS TO NORMALLY PREVENT ADMISSION OF ATMOSPHERE TO THE INTERIOR OF THE COVER AND SO SUPPORTED AS TO BE RESPONSIVE
Claim 2
Dependent Claim
131 words
IN AN INSULATED FLUID TANK FOR CRYOGENIC SERVICE HAVING A RELIEF VALVE WITH AN EXTERNAL PORTION INCLUDING A VALVE MEMBER, SUPPORTED DIRECTLY ON SAID TANK, A PROTECTING COVER FORMED OF MATERIAL OF LOW THERMAL CONDUCTIVITY SUPPORTED IN A POSITION SURROUNDING AND COVERING SAID VALVE MEMBER AND PROJECTING EXTERNALLY OF THE TANK THEREFROM, VENT MEANS CARRIED BY SAID PROTECTING COVERING AND HAVING AN INLET END WITHIN THE INTERIOR OF SAID PROJECTING COVER AND HAVING AN OUTLET END COMMUNICATING WITH THE ATMOSPHERE CONSTITUTING THE SOLE MEANS FOR COMMUNICATION BETWEEN THE INTERIOR OF THE COVER AND THE ATMOSHPERE, AND MEANS OUTWARDLY OF SAID VENT MEANS NORMALLY DIRECTLY CLOSING SAID INLET END OF SAID VENT MEANS TO NORMALLY PREVENT ADMISSION OF ATMOSPHERE TO THE INTERIOR OF THE COVER AND SO SUPPORTED AS TO BE RESPONSIVE
References Cited (Backward Citations)
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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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |