Air baffle assembly for electronic circuit mounting frame

Details Air baffle assembly for electronic circuit mounting frame Air baffle assembly for electronic circuit mounting frame

1981-12-21

1983-08-16

Tolin, G. P.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

165 80B, 361384, 361415, 174 16R, H05K 720

Patent

active

043994857

ABSTRACT:
A variable width baffle assembly maintains constant, uniform impedance to the flow of cooling air across a vacant space on a partially populated electronic mounting frame for printed circuit board assemblies. The inexpensive but reliable baffle assembly includes end boards mounted on opposite sides of the space and a web member extending therebetween. The web member has a plurality of small apertures distributed thereover with a ratio of aperture area to web member surface area selected to approximate the impedance presented by populated portions of the frame. The web member may be mounted in arched, hinged, corrugated or sliding relationship to accommodate changes in the spacing between end boards so that a single model of baffle assembly can accommodate multiple sizes of vacant spaces.

REFERENCES:
patent: 3187082 (1965-06-01), Allison
patent: 3236296 (1966-02-01), Dubin
patent: 3967874 (1976-07-01), Calabro

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