Infinite speed transmission with reciprocating yokes

Machine element or mechanism – Mechanical movements – Rotary to intermittent unidirectional motion

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Details

74121, 741255, F16H 2908, F16H 2920, F16H 2710

Patent

active

044944160

ABSTRACT:
Cams carried by a power input shaft reciprocate a pair of yokes along perpendicular paths with the ends of each yoke coupled to a pair of oscillating arm members, all carried by a shift ring. Disposed for rectilinear travel between each pair of arm members is a gear plate. Rack gears on the gear plates impart rotation to driven gears of multiple drive assemblies, each of which assemblies includes a driving gear in mesh with an output shaft mounted gear. Rectilinear movement of the gear plates in one direction in response to arm oscillation imparts rotation to the driving gear of each drive assembly while a unidirectional clutch in each drive assembly permits overrunning of the driving gear during return travel of its associated gear plate. Infinite speed changes result from shifting the axes of arm oscillation toward or away from the gear plate ends by positioning of the arm carrying shift ring. Modified gear plates include end mounted bearings of semi-circular shape which ride on arm member curved inner surfaces.

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patent: 3459056 (1969-08-01), Lea
patent: 3722305 (1973-03-01), Walters et al.
patent: 3750485 (1973-08-01), Blakemore
patent: 4413961 (1983-11-01), Griffin

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