Patent US5218516A successfully refreshed from Google Patents.
US5218516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic module
Assignee: Zarbana Digital Fund LLC
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Filing: 1991-10-31
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Granted: 1993-06-08
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Expires: 2011-10-31
Abstract
Abstract Electronic module of printed circuit board with electronic components on one side and its other side in heat conducting contact with a heat sink enables the electronic components to be sealed from ambient atmosphere and thus unpackaged chips may be used. The modules are mountable in a support frame with air cooling passages of the heat sinks extending vertically for convected cooling air. In each module, a resistor network may extend into a cavity formed in a heat exchange rib and an electronic chip, perhaps unpackaged in the sealed environment, may be in heat conductive relationship with the heat sink.
Inventors
- 👤 Hugh M. Collins
- 👤 Hasler R. Hayes
- 👤 John S. Moss
- 👤 Clifford D. Read
- 👤 Tristano F. Nicoletta
- 👤 John B. Drayton
- 👤 David J. Pell
- 👤 Roman Katchmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:13
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20536; H05K7/20545
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
169 words
An electronic module comprising: heat sink means having two spaced and opposed sidewalls and two end walls at opposite edges of the sidewalls to define passage means bordered by the sidewalls and by the end walls, the passage means having opposite ends which are open for slow of a cooling fluid through the passage means, each sidewall having an outer surface facing away from the passage means, the heat sink means also having heat release projection means extending into the passage means from the sidewalls; two printed circuit boards which are mounted one upon each of the outer surfaces of the sidewalls to form an assembly of heat sink means and printed circuit boards with each printed circuit board having a major surface remote from the heat sink means and electronic components mounted upon said remote major surface; and a cover means which is mounted upon the assembly of heat sink means and printed circuit boards and which covers the electronic components on each of the printed circuit boards.
Claim 2
Dependent Claim
169 words
An electronic module comprising: heat sink means having two spaced and opposed sidewalls and two end walls at opposite edges of the sidewalls to define passage means bordered by the sidewalls and by the end walls, the passage means having opposite ends which are open for slow of a cooling fluid through the passage means, each sidewall having an outer surface facing away from the passage means, the heat sink means also having heat release projection means extending into the passage means from the sidewalls; two printed circuit boards which are mounted one upon each of the outer surfaces of the sidewalls to form an assembly of heat sink means and printed circuit boards with each printed circuit board having a major surface remote from the heat sink means and electronic components mounted upon said remote major surface; and a cover means which is mounted upon the assembly of heat sink means and printed circuit boards and which covers the electronic components on each of the printed circuit boards.
Claim 3
Dependent Claim
44 words
An electronic module according to claim 1 wherein an additional circuit board is mounted upon the outer surface of an end wall and at least one of the printed circuit boards is interconnected with the additional circuit board through a flexible circuit board means.
Claim 4
Dependent Claim
19 words
An electronic module according to claim 1 wherein the projection means comprises spaced-apart ribs extending into the passage means.
Claim 5
Dependent Claim
26 words
An electronic module according to claim 2 wherein the ribs extend from each sidewall and are rectilinear with the ribs lying mutually in substantially parallel relationship.
Claim 6
Dependent Claim
29 words
An electronic module according to claim 3 wherein each rib of each sidewall has a free end opposing a free end of a corresponding rib of the other sidewall.
Claim 7
Dependent Claim
17 words
An electronic module according to claim 4 wherein the free ends of corresponding ribs contact each other.
Claim 8
Dependent Claim
29 words
An electronic module according to claim 2 wherein the ribs extend across the passage means from sidewall to sidewall to form the heat sink means into an integral structure.
References Cited (Backward Citations)
US3348148A
Cited
US4656559A
Cited
GB2167906A
Cited
US4858071A
Cited
US4916575A
Cited
US5060112A
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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) | 1996-06-07 | 1996-12-07 | 1997-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-07 | 2000-12-07 | 2001-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-07 | 2004-12-07 | 2005-06-08 | $7700.00 | Window Closed / Lapsed |