Automatic air filter changer

Details Automatic air filter changer Automatic air filter changer

B - Operations, Transporting

01

D

183/80

B01D 46/18 (2006.01)

Patent

CA 1145684

ABSTRACT OF THE DISCLOSURE The changer includes a filter supporting frame attached to a supply spool containing fresh filter material and a take-up spool for storing the clogged filter material. The frame is substantially rectangular in shape and has attached thereto a sensor switch which is disposed medially of the frame and the filter material disposed thereacross. The switch is actuated when the filter material become a clogged to a point where deflected inn of the material in response to circulating air flow occurs. The switch actuates a drive motor attached to the take-up spool causing the take-up spool to wind the clogged material thereon thereby replacing it with clean filter material from the supply spool. The filter material itself contains transverse enlarged linear elements which are longitudinally spaced along the filter material at intervals equivalent to the width of the frame. The enlarged areas actuate a switch which causes cessation of the motor drive, thereby insuring accurate placement of the fresh filter material.

348857

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