US3177369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic expander
Assignee: Lockheed Martin Corp
•
Filing: 1961-05-02
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Granted: 1965-04-06
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Expires: 1981-05-02
Abstract
No abstract record available.
Inventors
- 👤 George A Zotos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:03
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04763; F25J3/04866; F01; F01D; F01D15/00; F01D15/005; F25J2240/00; F25J2240/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A CRYOGENIC EXPANDER COMPRISING A SPINDLE, A TURBINE LONGITUDINALLY SPACED FROM THE END OF SAID SPINDLE AND EVACUATED ROTOR MEANS INTERMEDIATE SAID TURBINE AND AN END OF SAID SPINDLE AND IN CONNECTION WITH SAID TURBINE, SAID ROTOR MEANS ENVELOPING AND BEING ROTATABLY MOUNTED UPON SAID SPINDLE WHEREBY SAID TURBINEMAY PERFORM EXPANDING FUNCTIONS BY ROTATION ABOUT SAID SPINDLE WHILE
Claim 2
Dependent Claim
58 words
A CRYOGENIC EXPANDER COMPRISING A SPINDLE, A TURBINE LONGITUDINALLY SPACED FROM THE END OF SAID SPINDLE AND EVACUATED ROTOR MEANS INTERMEDIATE SAID TURBINE AND AN END OF SAID SPINDLE AND IN CONNECTION WITH SAID TURBINE, SAID ROTOR MEANS ENVELOPING AND BEING ROTATABLY MOUNTED UPON SAID SPINDLE WHEREBY SAID TURBINEMAY PERFORM EXPANDING FUNCTIONS BY ROTATION ABOUT SAID SPINDLE WHILE
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |