Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1988-04-18
1989-12-12
Diehl, Dwight G.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74713, F16H 144
Patent
active
048859567
ABSTRACT:
A power transmission with differential action employs hydraulic screw pumps for stepless variable coupling between the drive shaft and a driven shaft, axle or axles. The pump screws are driven by gears respectively engaging oppositely facing bevel tooth sets on a master gear. Centrifugal forces urge choke sleeves slidable on the screw pump housings to close the ports progressively, ultimately approximating drive conditions at a predetermined speed of the driven shaft, axle or axles.
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