Epicycloidal gear train including bushing-free planetary gear
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United States of America Patent
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Jan 2, 2018
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app pub date -
Sep 9, 2015
filing date -
Sep 9, 2015
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Abstract
An epicycloidal gear assembly for use in a vehicle seat actuator includes a planetary gear that is driven by a worm gear. The planetary gear has an outer edge surface that extends between opposed sides of the gear and has a first set of external teeth, and an inner edge surface that extends between the opposed sides and defines a central opening. The worm gear includes a gear head defining a second set of external teeth, and a gear stem extending from the gear head and passing through the central opening. An outer surface of the gear stem is configured to engage the planetary gear inner edge surface in such a way as to drive the planetary gear, and the planetary gear inner edge surface defines a smooth curve between the first side and the second side.
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