Patents by Inventor Alan L. Echtenkamp

Alan L. Echtenkamp 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).

  • Vibration dampening bearing ring spacer means
    Patent number: 3999632
    Abstract: A power driven rotary tool having a specially constructed bearing ring spacer means adapted to oppose self-induced vibrations. The power driven rotary tool comprises an outer housing frame, a driven rotatable shaft, a set of antifriction bearings disposed between the outer frame and the rotatable shaft for support of the rotatable shaft, a bearing ring spacer means in solid contact with either the outer housing frame or the outer races of the antifriction bearing and between a set of antifriction bearings, longitudinal passageways provided in the bearing ring spacer means and rigid impact elements disposed in the passageway to oppose self-induced vibrations with a power driven rotary tool.
    Type: Grant
    Filed: August 29, 1975
    Date of Patent: December 28, 1976
    Assignee: Kennametal Inc.
    Inventors: William D. Armbrust, Robert S. Gulibon, Alan L. Echtenkamp