US5197295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stirling miniature integral cooler/dewar assembly
Assignee: Individual
•
Filing: 1991-11-04
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Granted: 1993-03-30
•
Expires: 2011-11-04
Abstract
Abstract A double stage Stirling cryogenic cooler with an IR Focal Plane array detector directly mounted on top of the cooler's expander second stage and with the radiation shield assembly mounted and cooled by the expander first stage to a temperature range of 200-100 K.
Inventors
- 👤 Nachman Pundak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:26
CPC Classifications
F; F25; F25B; F25B9/00; F25B9/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A cryogenic Stirling two stage cooler for cooling of focal plane array type infra red sensors, said cooler comprising: a first stage, a second stage expander, a detector assembly directly mounted on top of the second stage expander, and a radiation shield assembly mechanically mounted and thermally grounded to the first stage.
Claim 2
Dependent Claim
52 words
A cryogenic Stirling two stage cooler for cooling of focal plane array type infra red sensors, said cooler comprising: a first stage, a second stage expander, a detector assembly directly mounted on top of the second stage expander, and a radiation shield assembly mechanically mounted and thermally grounded to the first stage.
References Cited (Backward Citations)
US3650118A
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US3969907A
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US4044567A
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US4852356A
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US4769997A
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US4825660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |