US4704872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally controlled T/R module test apparatus
Assignee: United States Department of the Air Force
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Filing: 1986-11-25
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Granted: 1987-11-10
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Expires: 2006-11-25
Abstract
Abstract A thermally controlled T/R module test apparatus utilizing a multi-stage thermoelectric cooling module to maintain a T/R module at predetemined temperature during test measurements. The thermoelectric cooling module provides a cooling capacity of 9 watts and a temperature differential of 80° centigrade which allows the T/R module to be thermally cycled during the test measurements.
Inventors
- 👤 Edward J. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:28
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/2851; G01R31/2855; G01R31/2872; G01R31/2874; G01R31/2875; F; F25; F25B; F25B21/00; F25B21/02; G01R29/00; G01R29/26; H; H10; H10N; H10N10/00; G01R31/286; G01R31/2865; G01R31/2867
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
A thermally controlled T/R module test apparatus for a testing T/R module during thermal cycling comprising in combination: means for thermoelectric cooling, said thermoelectric cooling means generating a temperature differential of 80° centigrade, means for support, said support means being adjustable to provide a stable platform, said thermoelectric cooling means positioned atop said support means, and, a mounting plate positioned atop said thermoelectric cooling means, said mounting plate including a means for holding, said holding means securing said T/R module to said mounting plate, said thermoelectric cooling means drawing excess heat from said mounting plate and said T/R module to maintain it at some predetermined temperature during test measurements, said thermoelectric cooling means transferring said excess heat to said support means for dissipation.
Claim 2
Dependent Claim
123 words
A thermally controlled T/R module test apparatus for a testing T/R module during thermal cycling comprising in combination: means for thermoelectric cooling, said thermoelectric cooling means generating a temperature differential of 80° centigrade, means for support, said support means being adjustable to provide a stable platform, said thermoelectric cooling means positioned atop said support means, and, a mounting plate positioned atop said thermoelectric cooling means, said mounting plate including a means for holding, said holding means securing said T/R module to said mounting plate, said thermoelectric cooling means drawing excess heat from said mounting plate and said T/R module to maintain it at some predetermined temperature during test measurements, said thermoelectric cooling means transferring said excess heat to said support means for dissipation.
Claim 3
Dependent Claim
35 words
A thermally controlled T/R module test apparatus as described in claim 1 further including a finned heat sink, said heat sink mounted to the bottom of said support means to dissipate said excess heat therefrom.
Claim 4
Dependent Claim
24 words
A thermally controlled T/R module test apparatus as described in claim 2 wherein said thermal cooling means provides a cooling capacity of 9 watts.
Claim 5
Dependent Claim
20 words
A thermally controlled T/R module test apparatus as described in claim 2 wherein said support means comprises a copper plate.
Claim 6
Dependent Claim
20 words
A thermally controlled T/R module test apparatus as described in claim 2 wherein said mounting plate comprises a copper plate.
Claim 7
Dependent Claim
55 words
A thermally controlled T/R module test apparatus as described in claim 2 further including a first thermocouple unit, said first thermocouple unit is positioned atop said mounting plate and a second thermocouple unit, said second thermocouple unit is positioned atop said support means, said first and second thermocouple units measuring temperatures up to 150° C.
Claim 8
Dependent Claim
88 words
A thermally controlled T/R module test apparatus as described in claim 2 wherein said holding means comprises in combination: a T-handle member fastened at one end to said mounting plate, a support member with an opening therein, said T-handle member passing through said opening in said support member to allow relative movement therebetween, and, a spring positioned around said T-handle member between said support member and the T-portion of said T-handle member, said spring exerting a force on said support member to maintain said T/R module in place.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |