US5590712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sink
Assignee: Aavid Thermalloy LLC
•
Filing: 1995-05-12
•
Granted: 1997-01-07
•
Expires: 2015-05-12
Abstract
Abstract A process for forming a profiled element from a generally longitudinally extending extruded sheet-form member having a plurality of transversely spaced longitudinally extended ribs upstanding therefrom is provided. The process includes the step of removing longitudinally spaced apart portions from some of the ribs by means of a transversely acting punching means.
Inventors
- 👤 Francis E. Fisher
- 👤 Robin D. Johnson
- 👤 David G. Gove
- 👤 Michael D. Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:14
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/20; H10W40/22; B; B21; B21C; B21C23/00; B21C23/02; B21C23/04; B21C23/14; B21C23/142; B21C35/00; B21C35/02; B21C35/023; B21C35/026; H10W40/01; H10W40/03; H10W40/037; H10W40/226; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49826; Y10T29/49895; Y10T29/49897; Y10T29/49995; Y10T29/49996; Y10T29/51; Y10T409/00; Y10T409/40; Y10T409/404375; Y10T409/405775
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
A heat dissipating element comprising an extruded longitudinally extending base member having a plurality of transversely spaced rows of longitudinally extending and spaced apart rib portions upstanding therefrom, wherein the rib portions taper progressively in a depthwise direction towards the extruded base member, said heat dissipating element having gaps between said spaced apart rib portions which are removed in a transverse punching operation, and wherein said base member and rib portions are formed of metal or other suitable thermally conductive material.
Claim 2
Dependent Claim
81 words
A heat dissipating element comprising an extruded longitudinally extending base member having a plurality of transversely spaced rows of longitudinally extending and spaced apart rib portions upstanding therefrom, wherein the rib portions taper progressively in a depthwise direction towards the extruded base member, said heat dissipating element having gaps between said spaced apart rib portions which are removed in a transverse punching operation, and wherein said base member and rib portions are formed of metal or other suitable thermally conductive material.
Claim 3
Dependent Claim
27 words
A heat dissipating element as claimed in claim 1 wherein the rib portions of adjacent rows are arranged so as not to be generally in transverse alignment.
Claim 4
Dependent Claim
24 words
A heat dissipating element as claimed in claim 1 wherein the rib portions taper incrementally in a depthwise direction towards said extruded base member.
References Cited (Backward Citations)
US3180404A
Cited
US3135321A
Cited
US3242984A
Cited
US3313339A
Cited
US3695081A
Cited
US3730477A
Cited
US4078288A
Cited
US4746479A
Cited
US4701828A
Cited
US4588028A
Cited
US4884331A
Cited
US4884331B1
Cited
US4879981A
Cited
US5383517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-07 | 2000-07-08 | 2001-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-07 | 2004-07-08 | 2005-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-07 | 2008-07-08 | 2009-01-07 | $7700.00 | Window Closed / Lapsed |