Motorized damper apparatus

Details Motorized damper apparatus Motorized damper apparatus

1991-04-22

1992-03-17

Rosenthal, Arnold

Valves and valve actuation

Lost motion between actuator and valve

25112911, 251305, F16K 3104

Patent

active

050961560

ABSTRACT:
Motorized damper apparatus including a conduit, a damper blade movably mounted within the conduit between an open position and a closed position, and mechanism including a motor for moving the damper blade between the open and closed positions. The damper blade is decoupled from the motor after movement of the damper blade from the closed position to the open position.

REFERENCES:
patent: 2815924 (1957-12-01), Burch
patent: 4246918 (1981-01-01), Dean
patent: 4850319 (1989-07-01), Imoehl
patent: 4917350 (1990-04-01), Beyer et al.
patent: 4981283 (1991-01-01), Bradshaw et al.

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