Gearless differential speed reducer device

Details Gearless differential speed reducer device Gearless differential speed reducer device

1991-04-29

1993-03-30

Braun, Leslie A.

Planetary gear transmission systems or components

Planet periphery surrounds axis of interacting gear

Gear teeth comprise rolling bodies

F16H 128, F16H 1306

Patent

active

051979306

ABSTRACT:
In a gearless differential speed reducer, first and second discs are provided in a manner to oppose each other, and a plurality of semi-spherical recesses circumferentially are provided on the opposing surface of the first disc along a certain pitch circle. A groove provided on the opposing surface of the second disc, the groove defined as a cycloidal-based curve running along a pitch circle. A rollable ball is provided to be placed at each of the semi-spherical recess and the groove. The balls are adapted to roll within the recess, and at the same time, roll along the groove when a rotational movement is transmitted to the second disc to impart the second disc with a nutational movement. A rectifier member provided to pick up a rotational movement from the nutational movement of the second disc.

REFERENCES:
patent: 4542664 (1985-09-01), Sladek et al.
patent: 4643047 (1987-02-01), Distin et al.
patent: 4829851 (1989-05-01), Imase

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