Spring loaded multi-wedge card retainer
US4953059A · kind A · utility
14Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1986 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Mar 6, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/1404
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A plurality of trapezoidal wedges in a channel for retaining a PCB heat sink are held in place by spring force provided by a compression spring inside the bottom end wedge. The compression forces provided by the spring are mainly effective to prevent twisting of wedges on the absence of a heat sink and to provide at least some degree of heat transfer between the heat sink and the chassis even if the responsible technician neglects to torque down the wedges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.