US3744559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-transfer device for cooling heat-generating components
Assignee: AT&T Inc
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Filing: 1971-03-03
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Granted: 1973-07-10
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Expires: 1991-03-03
Abstract
Abstract A heat-transfer device of unitary structure for dissipating heat generated by semiconductors and the like is composed of a heatconducting metal. The device includes a flat base having fingers formed integrally and upwardly along longitudinal opposite edges thereof. An opening is formed in the central portion of the base to facilitate the positioning of the heat-transfer device over the accommodating structure of a semiconductor after the semiconductor has been assembled with and secured to a printing wiring board. The heat-transfer device is integrally formed with clinching tabs which are bent after the device has been assembled with the printed wiring board to secure the device with the board independently of the semiconductor.
Inventors
- 👤 R Overholt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:18
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/60; H10W40/641
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
211 words
A heat-transfer device for dissipating heat generated by an electronic component, which comprises: a heat-dissipating member of unitary structure composed of a heat-conductive material; the member being formed with a base portion and upturned fingers along opposite side edges of the base portion and opposite end edges being open to form a substantially U-shaped channel which facilitates the circulation of air therethrough; the base portion being formed with a through opening in a portion thereof with the opening being shaped generally to be positioned over a complimentary structure of an electronic component; a pair of tabs extending integrally from a portion of the base portion adjacent said through opening for facilitating the assembly and securing of the member with a supporting structure; the pair of tabs and the through opening in the base being located to permit the assembly of the member with the supporting structure independently of the assembly and securing of the component with the supporting structure, and the base portion being formed integrally with a plurality of legs which extend from the base portion to maintain the member in a spaced relationship with the supporting structure after securing of the member with the structure so that air is permitted to circulate about substantially all portions of the member.
Claim 2
Dependent Claim
211 words
A heat-transfer device for dissipating heat generated by an electronic component, which comprises: a heat-dissipating member of unitary structure composed of a heat-conductive material; the member being formed with a base portion and upturned fingers along opposite side edges of the base portion and opposite end edges being open to form a substantially U-shaped channel which facilitates the circulation of air therethrough; the base portion being formed with a through opening in a portion thereof with the opening being shaped generally to be positioned over a complimentary structure of an electronic component; a pair of tabs extending integrally from a portion of the base portion adjacent said through opening for facilitating the assembly and securing of the member with a supporting structure; the pair of tabs and the through opening in the base being located to permit the assembly of the member with the supporting structure independently of the assembly and securing of the component with the supporting structure, and the base portion being formed integrally with a plurality of legs which extend from the base portion to maintain the member in a spaced relationship with the supporting structure after securing of the member with the structure so that air is permitted to circulate about substantially all portions of the member.
Claim 3
Dependent Claim
26 words
The heat-transfer device as set forth in claim 1, wherein the pair of tabs extend in a direction generally opposite the direction of the upturned fingers.
Claim 4
Dependent Claim
24 words
The heat-transfer device as set forth in claim 1, wherein the legs extend in a direction substantially parallel to the direction of the tabs.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |