Fan filter

Details Fan filter Fan filter

1982-07-06

1984-10-16

Prunner, Kathleen J.

Gas separation

With gas flow effecting means

Impeller within or proximate to space encompassed by...

55491, 55500, 55509, 55529, B01D 4610

Patent

active

044772726

ABSTRACT:
A filter used in conjunction with a motor driven fan is mounted on the cage which covers the fan blades. The filter has a configuration similar to that of the cage and has a slot extending from its outer periphery to its central area to permit the filter to be slipped over the motor. Drawstrings are sewn into the filter about its outer periphery and are used to secure the filter to the cage. One end of each drawstring is rigidly connected to one of the corners of the slot and the other end of each drawstring has a hook which is hooked onto a bar of the cage to hold the drawstring taut. The cage and filter are disposed on the intake side of the fan so that the air is filtered before it impinges on the fan blades. This prevents the accumulation of dust and dirt on the fan.

REFERENCES:
patent: 1438868 (1922-12-01), Shull et al.
patent: 1750446 (1930-03-01), Wallace et al.
patent: 1967713 (1934-07-01), Kelley
patent: 2096262 (1937-10-01), Roth
patent: 2161027 (1939-06-01), Dollinger
patent: 2304309 (1942-12-01), Leathers
patent: 2627217 (1953-02-01), Hainke et al.
patent: 3051230 (1962-08-01), Hart

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