Vent damper drive

Details Vent damper drive Vent damper drive

1979-11-13

1981-04-21

Yeung, James C.

Stoves and furnaces

Dampers

Electric

126289, 236 1G, F23L 300

Patent

active

042626528

ABSTRACT:
An automatic vent damper control mechanism for use on furnaces or the like having a spring loaded open position and an electric motor which drives it to a closed position, against the spring bias, via a gear train. A unique over-travel mechanism is provided which prevents damage to the gear train from occurring when the damper reaches the end of its travel towards its open condition.

REFERENCES:
patent: 4039123 (1977-08-01), Frankel
patent: 4205783 (1980-06-01), Dietsche

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