US PATENT SUBCLASS 476 / 63
.~ Ball actuator


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



476 /   HD   FRICTION GEAR TRANSMISSION SYSTEMS OR COMPONENTS

61  DF  CONDITION RESPONSIVE MEANS TO VARY CONTACT PRESSURE {2}
63.~ Ball actuator


DEFINITION

Classification: 476/63

Ball actuator:

(under subclass 61) Subject matter wherein said means include a spherical member. [figure] [caption] 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 transition of the second cam portion in response to rotation of the first.