US3796254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature control conductive device
Assignee: United States Department of the Army
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Filing: 1972-05-25
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Granted: 1974-03-12
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Expires: 1992-05-25
Abstract
Abstract A passive temperature conductive device for use in mounting flight control units in a missile. The device controls conduction of heat to provide maximum conduction during pre-launch operation from the units and minimum conduction to the units at high altitude flights. The mating surfaces of a conductive joint allows heat to flow freely from the units to the missile skin during pre-launch operation, but restricts the reverse flow of aerodynamic heating into the units during flight.
Inventors
- 👤 F Stooksberry
- 👤 F Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:55
CPC Classifications
F; F28; F28F; F28F13/00; F42; F42B; F42B15/00; F42B15/34; F28F2013/005; F28F2013/008
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A temperature control device for use in a missile to provide maximum heat conduction during pre-launch operation and minimum heat conduction at high altitudes, said device comprising: a flight control unit having a plate for mounting heat producing electrical components contained in said flight control unit, said plate provided with a portion extending outside of said unit, said unit having an intergal flange with one surface juxtaposed to said plate, and a machined surface opposite said plate; a heat conducting device having a pair of divergently connected legs, one of said legs having a machined surface for mating with said surface on said flange; both of said surfaces having tool marks disposed to intersect at an angle of at least 45* relative to each other for minimizing surface contact, and bolt means for applying a predetermined clamping pressure on said mating surfaces.
Claim 2
Dependent Claim
142 words
A temperature control device for use in a missile to provide maximum heat conduction during pre-launch operation and minimum heat conduction at high altitudes, said device comprising: a flight control unit having a plate for mounting heat producing electrical components contained in said flight control unit, said plate provided with a portion extending outside of said unit, said unit having an intergal flange with one surface juxtaposed to said plate, and a machined surface opposite said plate; a heat conducting device having a pair of divergently connected legs, one of said legs having a machined surface for mating with said surface on said flange; both of said surfaces having tool marks disposed to intersect at an angle of at least 45* relative to each other for minimizing surface contact, and bolt means for applying a predetermined clamping pressure on said mating surfaces.
Claim 3
Dependent Claim
40 words
A device as set forth in claim 1 wherein one of said mating surfaces has a lathe finish and the other surface has an end mill finish, both surfaces having a roughness of approximately Square Root 63 and are anodized.
Claim 4
Dependent Claim
20 words
A device as set forth in claim 1 wherein said angle of intersection of said surfaces is greater than 45*.
References Cited (Backward Citations)
US3215194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |