US3092972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light weight liquid helium control system
Assignee: Union Carbide Corp
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Filing: 1958-10-22
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Granted: 1963-06-11
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Expires: 1978-10-22
Abstract
No abstract record available.
Inventors
- 👤 Richard M Poorman
- 👤 George C Hacttinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/06; B; B64; B64C; B64C13/00; B64C13/24; Y; Y02; Y02T; Y02T50/00; Y02T50/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A METHOD OF REDUCING THE WEIGHT OF AN AIRBORNE FLUID CONTROL SYSTEM COMPRISING CONTAINING A BODY OF LIQUIDFIED HELIUM WITHIN THE CONTROL SYSTEM AND PARTIALLY INSULATING SUCH BODY FROM THE EFFECTS OF AMBIENT HEAT BY SURROUNDING THE LIQUEFIED HELIUM BODY WITH A BODY OF A SECOND LOW-BOILING LIQUEFIED GAS; AND UTILIZING THE LIQUEFIED HELIUM AS A SOURCE OF GAS PRESSURE FOR SAID CONTROL SYSTEM BY CONERTING SAID LIQUEFIED HELIUM TO GASEOUS HELIUM BY HEAT EXCHANGE WITH THE SECOND LIQUEFIED GAS BODY WITHIN
References Cited (Backward Citations)
US1543061A
Cited
US2397659A
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US2482778A
Cited
US2576984A
Cited
US2834187A
Cited
US2871669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |