Heat sink and process and molding tool for production of same
US6571859B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2002 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Mar 11, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat sink of metal material, in particular a light metal alloy, for semi-conductor elements or similar components, has plate-like cooling ribs projecting from a base plate at intervals (f) and approximately parallel to each other, protrude with a connection strip into the base plate in which they are cast. A molding tool designed for production of the heat sink includes a casting mold with a mold chamber for the base plate. The mold chamber contains an area to receive the connection strips of the cooling ribs. Two parallel side walls of the casting mold and intermediate layers arranged parallel between them, each defining a receiver gap, are arranged displaceably on at least one shaft passing through them. The walls can be moved to produce the compact casting mold after insertion of the cooling ribs in the receiver gaps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.