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Ball transfer mechanism with polycrystalline diamond bearing support

United States Patent

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10,968,700
April 6, 2021
View the Complete Patent at the US Patent & Trademark Office
A ball transfer mechanism for a harmonic drive and linear piston motor is disclosed. The ball transfer mechanism includes a spherical ball and a cylindrical seat portion. The seat portion defines a hemispherical shaped recess with a contour for receiving the ball. The ball transfer mechanism is in an exterior wall of a housing for converting rotary motion to linear motion, driving a linear piston motor. The harmonic drive drives a rotor of the linear piston motor. The harmonic drive includes a hollow cylindrical coupler portion engaging a rotor portion for transferring torque to the rotor portion. Transfer mechanisms disposed along a housing wall of the linear piston motor engage the coupler portion. The coupler portion includes harmonic cam grooves for receiving spherical balls in the ball transfer mechanism that drives rotational motion in the rotor in response to axially linear movement of the piston assembly.
15/ 726,506
October 6, 2017
1/1
E21B 4/10 (20060101)E21B 17/07 (20060101)E21B 19/086 (20060101)E21B 21/01 (20060101)E21B 4/02 (20060101)B06B 1/18 (20060101)F01B 1/06 (20060101)
;173/90
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was developed under Contract No. DE-NA0003525 between the United State Department of Energy and National Technology & Engineering Solutions of Sandia, LLC, for the operation of the Sandia National Laboratories.