Vent damper drive

Details Vent damper drive Vent damper drive

1982-10-21

1983-12-20

Tapolcai, William E.

Stoves and furnaces

Dampers

Electric

236 1G, 192142R, F23L 300

Patent

active

044210965

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: 2610810 (1952-09-01), Pelough
patent: 3090558 (1963-05-01), Vaughn
patent: 4079884 (1978-03-01), Sherman
patent: 4205783 (1980-06-01), Dietsche et al.
patent: 4264023 (1981-04-01), Kutzner et al.
patent: 4264296 (1981-04-01), Folkerts

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