Patents by Inventor Howard M. Larsen

Howard M. Larsen 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).

  • Method and apparatus for friction welding
    Patent number: 4552609
    Abstract: Friction welding apparatus for joining a rotatable element to a fixed element by means of a continuous drive system including apparatus for precisely orienting the rotational position of the rotatable element relative to the fixed element. Control apparatus is provided terminating the applied rotational force after a predetermined number of rotations and allowing the rotatable element to enter a coast down welding stage for a predetermined period of time, after which time the coast down rotation is stopped and a final forge pressure is applied whereby the rotational position of the rotatable element is precisely located relative to the fixed element when weldment is complete.
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: November 12, 1985
    Assignee: Homac Mfg. Company
    Inventor: Howard M. Larsen