Heat sink fastener
US6752577B2 · kind B2 · utility
19Cited by
18References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2002 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Oct 24, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/913
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A heat sink fastener includes a locating bolt having a compressible barbed tip for securing the heat sink to the circuit board, and a buffer spring mounted on the locating bolt and adapted to force the heat sink downwards into close contact with the CPU at the circuit board, the buffer spring has a top ring defining a top receiving space, a bottom ring defining a bottom receiving space, and a double conical spiral spring body connected between the top ring and the bottom ring and receivable in the top receiving space and the bottom receiving space when compressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.