Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1992-10-28
1993-05-04
Look, Edward K.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
415119, 4152131, 361427, 361429, F04D 2966
Patent
active
052087301
ABSTRACT:
To isolate a computer housing structure from vibration created by an internal cooling fan, the fan is provided with a pair of specially designed resilient vibration isolation members. In one embodiment, the vibration isolation members each comprise a spaced pair of pocketed end portions having generally triangular cross-sections and joined by a thin strip of resilient material. These end portions are fitted onto the corners of the fan's rectangular outer frame which is then pushed forwardly into a rectangular mounting frame, the pocketed isolation member end portions serving to space the inserted fan frame apart from the mounting frame. The rear side of the mounting frame is then secured to an inner side surface of the computer housing structure. In another embodiment, a pair of elongated resilient vibration isolation members are removable mounted on opposite outer side edge portions of a rectangular mounting frame into which the rectangular fan frame is removably inserted. The mounting frame has a pair of resilient barb structures, projecting downwardly from its bottom side, which are snapped into suitably configured openings in a printed circuit power supply board disposed within a portion of the computer housing structure. Contiguous wall portions of the computer housing structure portion press inwardly against the installed vibration isolation members which function to firmly hold the cooling fan in place and substantially reduce the amount of fan vibration transmitted to the computer housing structure.
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patent: 5079438 (1992-01-01), Heung
Compaq Computer Corporation
Lee Michael S.
Look Edward K.
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