Patents by Inventor John B. Thomson

John B. Thomson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Linear motion ball bearing assembly and ball conforming shaft
    Patent number: 4025995
    Abstract: A linear motion ball bearing assembly and shaft having ball conforming portions are combined to support heavier-than-normal loads and provide torque resistance. The bearing shaft is provided with one or more ball conforming grooves. The bearing assembly is provided with one or more load-bearing surfaces, each of which also includes a ball conforming groove, which may move circumferentially a very slight amount for tolerance variations in the angular spacing and parallelism of the shaft grooves, thereby assuring perfect ball conformity and line contact on the load-bearing surface of both the shaft and bearing assembly. Alternative configurations and methods of forming the ball conforming grooves on the shaft are also disclosed.
    Type: Grant
    Filed: June 5, 1974
    Date of Patent: May 31, 1977
    Assignee: Thomson Industries, Inc.
    Inventor: John B. Thomson