Machine element or mechanism – Gearing – Alternating rotary or continuous
Patent
1985-02-11
1987-03-31
Braun, Leslie
Machine element or mechanism
Gearing
Alternating rotary or continuous
74319, 74322, 74378, 173 48, 173163, F16H 308
Patent
active
046533389
ABSTRACT:
The preferred embodiment can be incorporated into a powered instrument which rotates a tool. The preferred embodiment permits changing the direction of rotation of the tool without using the hand that does not grip the instrument housing to operate the tool, and without altering the grip on the instrument. The preferred embodiment includes an actuator which moves between two positions to selectively couple two rotating members to an output shaft. The output shaft is rotated in one direction when one rotating member is coupled to the shaft and is rotated in the remaining direction when the remaining rotating member is coupled to the shaft. Movement of the actuator between its two operative positions can be achieved by pushing on the instrument housing to push the tool against the workpiece, or by pulling the instrument housing away from the chuck if the tool is embedded within the workpiece.
REFERENCES:
patent: 1581838 (1926-04-01), Claasen
patent: 3785443 (1974-01-01), Armbruster
patent: 3818855 (1974-06-01), Shimanckas
patent: 3827510 (1974-08-01), Mazepa
patent: 3931744 (1976-01-01), Wunsch
patent: 4098351 (1978-07-01), Alessio
patent: 4277209 (1981-07-01), Benjamin et al.
patent: 4395240 (1983-07-01), Blanchard
patent: 4510816 (1985-04-01), Linden
patent: 4527441 (1985-07-01), Nakahama
Braun Leslie
Diehl Dwight G.
Hall Surgical Division of Zimmer Inc.
Krieger Stuart E.
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