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Title: Ball transfer mechanism with polycrystalline diamond bearing support

Patent ·
OSTI ID:2222069

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.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
DOE Contract Number:
NA0003525
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
Patent Number(s):
11,719,046
Application Number:
17/190,881
OSTI ID:
2222069
Resource Relation:
Patent File Date: 03/03/2021
Country of Publication:
United States
Language:
English

References (6)

Modular fluid powered linear piston motors with harmonic coupling patent October 2018
Down-hole mud actuated hammer patent March 1995
Fluid-powered linear motor with rotary pistons and motion rectifier patent-application April 2019
Multi-function power tool patent-application May 2012
Fastener driving device patent-application September 2009
Systems and methods that use harmonic drives for converting reciprocating axial motion to continuous rotary motion, helical drives for converting reciprocating rotary motion to reciprocating axial motion and combinations thereof for converting reciprocating rotary motion to continuous rotary motion patent-application May 2019

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