US3904933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling apparatus for electronic modules
Assignee: Control Data Corp
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Filing: 1974-10-23
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Granted: 1975-09-09
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Expires: 1994-10-23
Abstract
Abstract An electronic circuit module is housed in a thermally conductive housing having fluid conduits therein for carrying coolant. The circuit module includes a stack of a plurality of circuit boards supported in the housing, each circuit board having a thermally conductive member attached to opposite side portions thereof, each member having a sawtooth edge portion. A plurality of cooling bars are sandwiched between a wall of the housing and the side members of the stack, each bar including a surface adapted to abut the inner surface of the wall and a sawtooth portion for abutting the sawtooth portion of an individual circuit board. Torque means, such as a threaded fastener, is provided for moving the plurality of cooling bars to wedge the same between the individual members and the wall to establish good thermal connection between the coolant in the fluid conduits and the circuit boards.
Inventors
- 👤 Ronald E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:44
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20536; H05K7/20663; H05K7/20681; H05K7/14; H05K7/1401; H05K7/1402; H05K7/1404; H05K7/20545
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
258 words
An electronic circuit module comprising: a thermally conductive housing supporting a stack of a plurality of substantially planar circuit boards, said housing including side wall members defining internal surfaces; fluid conduit means disposed in said wall members for containing coolant; a thermally conductive edge member mounted to a side portion of each of said circuit boards, each edge member having a sawtooth edge portion defining a nominal edge plane of said board, said nominal edge plane being disposed substantially parallel to said internal surface of the respective side wall member, the sawtooth edge portion of each edge member including first surface portions disposed at a predetermined angle to said nominal plane and second edge portions forming transitions between adjacent first edge portions; thermally conductive spacer means comprising a stack of individual spacers, each of said spacers having a first surface bearing against a respective internal surface and a sawtooth edge portion having surface portions disposed at a predetermined angle to said first surface, and frame means within said housing clamping said stack of spacers for fixedly positioning each of said spacers relative to the other spacers; and engaging means engaging said frame means to move said stack of spacers along said nominal plane thereby wedging each of said conductive spacers between said respective wall member and the respective conductive edge member of an individual circuit board of said stack of circuit boards, the surface portions of said sawtooth edge portions of said spacers bear against the first surface portions of the sawtooth edge portions of said edge members.
Claim 2
Dependent Claim
258 words
An electronic circuit module comprising: a thermally conductive housing supporting a stack of a plurality of substantially planar circuit boards, said housing including side wall members defining internal surfaces; fluid conduit means disposed in said wall members for containing coolant; a thermally conductive edge member mounted to a side portion of each of said circuit boards, each edge member having a sawtooth edge portion defining a nominal edge plane of said board, said nominal edge plane being disposed substantially parallel to said internal surface of the respective side wall member, the sawtooth edge portion of each edge member including first surface portions disposed at a predetermined angle to said nominal plane and second edge portions forming transitions between adjacent first edge portions; thermally conductive spacer means comprising a stack of individual spacers, each of said spacers having a first surface bearing against a respective internal surface and a sawtooth edge portion having surface portions disposed at a predetermined angle to said first surface, and frame means within said housing clamping said stack of spacers for fixedly positioning each of said spacers relative to the other spacers; and engaging means engaging said frame means to move said stack of spacers along said nominal plane thereby wedging each of said conductive spacers between said respective wall member and the respective conductive edge member of an individual circuit board of said stack of circuit boards, the surface portions of said sawtooth edge portions of said spacers bear against the first surface portions of the sawtooth edge portions of said edge members.
Claim 3
Dependent Claim
29 words
Apparatus according to claim 1 wherein said frame means comprises a rectangular frame receiving said thermally conductive spacers, and positioning means positioning each of said spacers in said frame.
Claim 4
Dependent Claim
35 words
Apparatus according to claim 2 wherein said positioning means comprises a plurality of fasteners threadably assembled to one end of said frame, each of said fasteners bearing against one end portion of a respective spacer.
Claim 5
Dependent Claim
40 words
Apparatus according to claim 3 further including resilient spacer means mounted to said frame at an end opposite said one end, an end portion opposite said one end portion of said of said spacers bearing against said resilient spacer means.
Claim 6
Dependent Claim
31 words
Apparatus according to claim 4 wherein said housing includes a face plAte mounted to said wall members, a forward portion of each of said circuit boards bearing against said face plate.
Claim 7
Dependent Claim
43 words
Apparatus according to claim 5 wherein said engaging means comprises threaded fastener means having a head portion engaging said face plate and a threaded portion threadably assembled to said frame means to move said frame means along the axis of said fastener means.
Claim 8
Dependent Claim
37 words
Apparatus according to claim 6 wherein an edge member is mounted to opposite side portions of said board, and a spacer means is sandwiched between said opposite edge members of the stack of boards and the housing.
Claim 9
Dependent Claim
37 words
Apparatus according to claim 4 wherein an edge member is mounted to opposite side portions of said board, and a spacer means is sandwiched between said opposite edge members of the stack of boards and the housing.
Claim 10
Dependent Claim
31 words
Apparatus according to claim 1 wherein said housing includes a face plate mounted to said wall members, a forward portion of each of said circuit boards bearing against said face plate.
Claim 11
Dependent Claim
43 words
Apparatus according to claim 9 wherein said engaging means comprises threaded fastener means having a head portion engaging said face plate and a threaded portion threadably assembled to said carrier means to move said carrier means along the axis of said fastener means.
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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |