Pre-application of grease to heat sinks with a protective coatin

Details Pre-application of grease to heat sinks with a protective coatin Pre-application of grease to heat sinks with a protective coatin

1997-08-13

1999-04-27

Lusignan, Michael

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Means separating or dissolving a material constituent

165185, 427259, 427282, B05D 132, B05D 136, B05D 500

Patent

active

058979174

ABSTRACT:
Heat sinks pre-coated with a layer of a material such as thermal grease are disclosed. Contamination and migration of the thermal grease is substantially reduced by covering the coated areas with a protective film that is removed prior to the assembly of the heat sink into a circuit board or other assembly. By providing a pre-coated heat sink, productivity can be enhanced, by increasing accuracy with which the thermal grease is applied, thus eliminating waste and clean up. Methods for pre-coating either a heat sink or the protective film with thermal grease are also disclosed. In preferred embodiments areas of the heat sink can be either fully coated,, or portions electively coated, and the coating is most preferably accomplished by a silk screening or pad printing process. The protective film is preferably provided with a tear off tab to facilitate the removal of the protective film. The present invention also discloses improved methods of installing a heat sink using heat sinks that are pre-coated with thermal grease.

REFERENCES:
patent: 2643964 (1953-06-01), Smith-Johannsen
patent: 2711382 (1955-06-01), Smith-Johannsen
patent: 3301315 (1967-01-01), Webb
patent: 3509429 (1970-04-01), Craig et al.
patent: 3972821 (1976-08-01), Weidenbenner et al.
patent: 4602678 (1986-07-01), Fick
patent: 5168926 (1992-12-01), Watson et al.
Thermalloy, Inc. catalog, "The Best Thermal Management Solutions from Around the World", Nov., 1996, pp. A2-A7 and D9-D11.

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