US3081095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fluorine seal
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1959-06-02
•
Granted: 1963-03-12
•
Expires: 1979-06-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Hamrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:23
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
THE METHOD OF PPREVENTING THE BURNING OF SEALS IN A LIQUID FLUORINE PUMP HAVING A PUMP CHAMBER HOUSING A ROTOR CARRIED ON A SHAFT WITH A ROTARY SEAL WHICH COMPRISES FORCING LIQUID OXYGEN IN SMALL QUANTITIES AXIALLY
Claim 2
Independent Claim
37 words
THE METHOD OF PPREVENTING THE BURNING OF SEALS IN A LIQUID FLUORINE PUMP HAVING A PUMP CHAMBER HOUSING A ROTOR CARRIED ON A SHAFT WITH A ROTARY SEAL WHICH COMPRISES FORCING LIQUID OXYGEN IN SMALL QUANTITIES AXIALLY
References Cited (Backward Citations)
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Cited
US2131927A
Cited
US2486939A
Cited
US2451261A
Cited
US2764945A
Cited
US2624599A
Cited
US2816417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |