Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1990-12-03
1992-12-29
Thompson, Gregory D.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
361383, 361400, 361387, H05K 720
Patent
active
051756684
ABSTRACT:
A circuit board (2) for receiving a component (38) requiring heat sinkage. The circuit board has a base portion (4) and a heat sink form portion (6) integral with the base portion. The heat sink form portion has a heat sink form and a coating (58) of thermally conductive material thereon to produce a heat sink. The heat sink has an aperture (32, 34) between a front surface (10) for contacting the component and a back surface (12) remote from the component to allow heat to be conducted directly from the front surface to the back surface. An integral resilient clamp (46-52) holds the component in contact with the heat sink. The integral nature of the base portion, the heat sink and the clamp provides a simple one piece board and the aperture enhances the heat sink efficiency by providing a direct heat conduction path to the back surface.
REFERENCES:
patent: 4729061 (1988-03-01), Brown
patent: 4803590 (1989-02-01), Fassel et al.
patent: 4922378 (1990-05-01), Malhi et al.
patent: 4972294 (1990-11-01), Moses, Jr. et al.
Moore John H.
Motorola Inc.
Thompson Gregory D.
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