Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1987-05-26
1988-06-21
Joyce, Harold
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361384, H05K 720
Patent
active
047518723
ABSTRACT:
A ventilation system for cooling the accessory board area of a personal computer is disclosed. The system incorporates two thin fans capable of producing an airflow of 25 cubic feet per minute. The entire system is small enough to mount between the chassis of the computer and the outer cover, thereby avoiding disfigurement of the external appearance of the machine. A lower plenum attached to the housing of the system helps direct air toward the lower portion of the accessory boards. The fans are powered by a direct current voltage, and a grounding clip on the unit automatically attaches to the chassis, requiring only one connection to the disk drive connector. An electroluminescent lamp is employed to indicate operation of the system.
REFERENCES:
patent: 3586915 (1971-06-01), Urguhart
patent: 3971877 (1976-07-01), Lee
patent: 4106076 (1978-08-01), Miller et al.
patent: 4122508 (1978-10-01), Rumsaugh
patent: 4356531 (1982-10-01), Marino et al.
patent: 4383286 (1983-05-01), Hicks
patent: 4672509 (1987-06-01), Speran
patent: 4685303 (1987-08-01), Branc et al.
P. W. Hardin, "Integral Edge Connector", IBM Technical Disclosure Bulletin, vol. 20, No. 11A, Apr. 1978.
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