Method and apparatus for controlling the speed of a damper blade
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 8, 2000
Grant Date -
N/A
app pub date -
Jul 1, 1998
filing date -
Jul 1, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for controlling the movement of a damper mounted in a housing between an open position and a closed position comprises a shaft rotatably secured to the damper for pivoting the damper between an open position and a closed position. A lever arm is mounted on the shaft for rotation therewith, and a spring is connected between the housing and the lever arm for normally urging the damper towards the open position. A motor is mounted on the housing and is actuable to overcome the force of the spring to move the damper to the closed position. A control arrangement associated with the housing is provided for regulating the speed of the damper as the damper moves from the closed position to the open position.
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