US4918308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated detector dewar cryoengine
Assignee: Raytheon Co
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Filing: 1989-03-20
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Granted: 1990-04-17
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Expires: 2009-03-20
Abstract
Abstract The present invention is directed to an integrated detector dewar cryoengine (10). The integrated detector dewar cryoengine (10) includes a detector (12) for detecting received electromagnetic radiation. The integrated detector dewar cryoengine (10) further comprises expander end cap (18) for removing thermal energy from said detector (12) which is in mechanical communication with said detector (12).
Inventors
- 👤 Fred J. Neitzel
- 👤 Leonard E. Peck, Jr.
- 👤 Richard M. Rall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:34
CPC Classifications
F; F25; F25D; F25D19/00; F25D19/006; G; G01; G01J; G01J5/00; G01J5/02; G01J5/06; G01J5/061; G01J2005/065
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
An apparatus for detecting electromagnetic radiation comprising: detector means for detecting electromagnetic radiation; means for removing thermal energy from said detector means by repeated compression and expansion of a fluid, said means for removing thermal energy comprising an expander operable to receive said fluid and having a cylindrical body with a disc-shaped projection at one end; and means for environmentally isolating said detector means and said means for removing thermal energy from said detector means so as to permit a vacuum to be formed in a region of said apparatus adjacent said detector means and said expander, said means for environmentally isolating further comprising an assembly housing and a bulkhead, said assembly housing mechanically communicating with said bulkhead.
Claim 2
Independent Claim
118 words
An apparatus for detecting electromagnetic radiation comprising: detector means for detecting electromagnetic radiation; means for removing thermal energy from said detector means by repeated compression and expansion of a fluid, said means for removing thermal energy comprising an expander operable to receive said fluid and having a cylindrical body with a disc-shaped projection at one end; and means for environmentally isolating said detector means and said means for removing thermal energy from said detector means so as to permit a vacuum to be formed in a region of said apparatus adjacent said detector means and said expander, said means for environmentally isolating further comprising an assembly housing and a bulkhead, said assembly housing mechanically communicating with said bulkhead.
Claim 3
Dependent Claim
34 words
The apparatus of claim 1, wherein said means for environmentally isolating said detector means and said means for removing thermal energy from said detector means further comprises a shield mechanically communicating with said bulkhead.
Claim 4
Dependent Claim
34 words
The apparatus of claim 2, wherein said means for environmentally isolating said detector means and said means for removing thermal energy from said detector means further comprises a frame mechanically communicating with said shield.
Claim 5
Dependent Claim
35 words
The apparatus of claim 3, wherein said means for environmentally isolating said detector means and said means for removing thermal energy from said detector means further comprises a distribution board mechanically communicating with said frame.
Claim 6
Dependent Claim
36 words
The apparatus of claim 4, wherein said means for environmentally isolating said detector means and said means for removing thermal energy from said detector means further comprises a window housing mechanically communicating with said assembly housing.
Claim 7
Dependent Claim
35 words
The apparatus of claim 5, wherein said means for environmentally isolating said detector means and said means for removing thermal energy from said detector means further comprises a window mechanically communicating with said window housing.
Claim 8
Dependent Claim
37 words
The apparatus of claim 1, wherein said means for removing thermal energy from said detector means comprises a detector mount disposed on said disc-shaped projection of said expander, said detector means mechanically communicating with said detector mount.
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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) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |