Rotary actuator for energy efficient ice cube dispenser door system
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United States of America Patent
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May 19, 2015
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app pub date -
Jul 13, 2012
filing date -
Jul 15, 2011
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Abstract
A rotary actuator suitable for use in a refrigerator ice-dispensing door provides a rotating shaft driven by a DC permanent magnet motor through a gear train and subject to a returning force of an internal spring. The gear train communicates with a switch to reduce current to the motor when a limit of travel is reached and a shunting path is provided around the motor to produce generative braking when power is removed from the motor and the actuator rotates backward to its initial position.
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