US4926935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed fin heat sink
Assignee: Robinson Fin Machines Inc
•
Filing: 1989-03-06
•
Granted: 1990-05-22
•
Expires: 2009-03-06
Abstract
Abstract A heat sink is created from a single or multiple lengths of compressed, corrugated fin, eliminating the need for a heat sink base plate. A length of corrugated fin is compressed in a fixturing operation to form a continuous top flat surface and a continuous bottom flat surface. After the fixturing operation, a bonding operation is performed to generate permanent continuous top and bottom flat surfaces on which elements requiring temperature control may be mounted directly, eliminating the cost and weight of a base plate.
Inventors
- 👤 Frederick W. Haushalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:06
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/20; H10W40/22; H10W40/226; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A heat sink created from a length of fin, the heat sink being formed by method steps, said steps comprising: generating a continuous corrugated piece of fin from a flat sheet of a metal, the fin including top and bottom connecting surfaces for connecting interposing lines of fin; compressing the fin to form continuous top and bottom flat surfaces; and bonding the compressed corrugated top and bottom connecting surfaces of the fin to generate permanent continuous top and bottom flat surfaces, whereby components may be directly mounted on the flat surface without the need for an intervening base plate.
Claim 2
Dependent Claim
99 words
A heat sink created from a length of fin, the heat sink being formed by method steps, said steps comprising: generating a continuous corrugated piece of fin from a flat sheet of a metal, the fin including top and bottom connecting surfaces for connecting interposing lines of fin; compressing the fin to form continuous top and bottom flat surfaces; and bonding the compressed corrugated top and bottom connecting surfaces of the fin to generate permanent continuous top and bottom flat surfaces, whereby components may be directly mounted on the flat surface without the need for an intervening base plate.
Claim 3
Independent Claim
94 words
A method for creating a heat sink from a length of fin, the method comprising: generating a continuous corrugated piece of fin from a flat sheet of a metal, the fin including top and bottom connecting surfaces for connecting interposing lines of fin; compressing the fin to form continuous top and bottom flat surfaces; and bonding the compressed corrugated top and bottom connecting surfaces of the fin to generate permanent continuous top and bottom flat surfaces, whereby components may be directly mounted on the flat surface without the need for an intervening base plate.
Claim 4
Independent Claim
94 words
A method for creating a heat sink from a length of fin, the method comprising: generating a continuous corrugated piece of fin from a flat sheet of a metal, the fin including top and bottom connecting surfaces for connecting interposing lines of fin; compressing the fin to form continuous top and bottom flat surfaces; and bonding the compressed corrugated top and bottom connecting surfaces of the fin to generate permanent continuous top and bottom flat surfaces, whereby components may be directly mounted on the flat surface without the need for an intervening base plate.
References Cited (Backward Citations)
US1527689A
Cited
US3160132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |