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Title: Variable loading roller

Patent ·
OSTI ID:867016

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 4841792
OSTI ID:
867016
Country of Publication:
United States
Language:
English