Variable loading roller

Details Variable loading roller Variable loading roller

1988-01-21

1989-06-27

Herrmann, Allan D.

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

74569, F16H 1314

Patent

active

048417920

ABSTRACT:
An automatic loading roller for transmitting torque in traction drive devices in manipulator arm joints includes a two-part camming device having a first cam portion rotatable in place on a shaft by an input torque and a second cam portion coaxially rotatable and translatable having a rotating drive surface thereon for engaging the driven surface of an output roller with a resultant force proportional to the torque transmitted. Complementary helical grooves on the respective cam portions interconnected through ball bearings interacting with those grooves effect the rotation and translation of the second cam portion in response to rotation of the first.

REFERENCES:
patent: 1416905 (1922-05-01), Stoeckicht
patent: 1775479 (1930-09-01), Arter
patent: 2123008 (1938-07-01), Hayes
patent: 3283614 (1966-11-01), Hewko
patent: 4483216 (1984-11-01), Takahashi et al.

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