Mechanism for converting oscillatory rotation of input shaft to

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

1991-04-22

1992-08-11

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to intermittent unidirectional...

74143, 74531, 748101, F16H 2702, G05G 506

Patent

active

051368889

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.degree. between two limiting positions. Camming surfaces on the pawls and the gears respectively provide for movement of each pawl from its operative position.

REFERENCES:
patent: 167194 (1875-08-01), Pelton
patent: 832077 (1906-10-01), Pearce
patent: 1197013 (1916-09-01), Cummings
patent: 4825512 (1989-05-01), Tremper et al.
Grafstein et al., Pictorial Handbook of Technical Devices, Chemical Publishing Co., Inc. New York (1971) pp. 60-61.

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