Mechanism for converting oscillatory rotation of input shaft...

Details Mechanism for converting oscillatory rotation of input shaft... Mechanism for converting oscillatory rotation of input shaft...

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 19/08 (2006.01) B65B 13/30 (2006.01) F16H 31/00 (2006.01)

Patent

CA 2066350

IMPROVED MECHANISM FOR CONVERTING OSCILLATORY ROTATION OF INPUT SHAFT TO UNIDIRECTIONAL ROTATION OF OUTPUT SHAFT ABSTRACT In a mechanism for converting oscillatory rotation of an input shaft to unidirectional rotation of an output shaft, two bevel gears are mounted around the input shaft and a bevel gear intermeshed therewith is coupled to the output shaft. Each bevel gear mounted around the input shaft can be alternately coupled to and uncoupled from the input shaft via an associated pawl disposed in a socket in the input shaft and biased toward an operative position wherein such pawl is extended into a single recess in a bearing surface of such bevel gear. Paired pawls and paired recesses may be optionally employed where high torque is encountered. Oscillatory rotation of the input shaft is limited to a range of approximately 180° between two limiting positions. Camming surfaces on the pawls and the gears respectively provide for movement of each pawl from its operative position.

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