Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1983-12-27
1987-02-10
Dorner, Kenneth J.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74337, 74665K, 408126, 408133, F16H 5710, F16H 552, B23B 4714
Patent
active
046415513
ABSTRACT:
The present invention provides apparatus which can be incorporated into a powered instrument that rotates a tool at varying rotational speeds and torques. The invention includes at least two drive plates, each of which rotates at a different speed and which exerts a different magnitude of torque. A movable member within the instrument selectively engages one of the two drive plates to couple that drive plate to the output shaft of the instrument. The apparatus can include a torque limiter which couples the input shaft to the output shaft only when the resistance to rotation offered by a drive plate is less than a predetermined value.
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Dorner Kenneth J.
Hall Surgical Division of Zimmer Inc.
Rolnicki Joseph M.
Yeager Robert D.
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