Patents by Inventor Donald Tumidajewicz

Donald Tumidajewicz 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).

  • End stress relief configuration for flexible element of elastomeric coupling
    Patent number: 4634400
    Abstract: An improvement in shaft couplings having a flexible elastomeric center element positioned between and bonded to annular metal shoes, which increases the service life of the coupling by forming the elastomer to preferred shapes, contours and thicknesses adjacent a circumferential discontinuity of the shoes and center element.
    Type: Grant
    Filed: May 13, 1980
    Date of Patent: January 6, 1987
    Assignee: Rexnord Inc.
    Inventors: Neil W. Butzow, Gerald G. Lambert, Donald Tumidajewicz
  • Speed reducer apparatus
    Patent number: D269014
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: May 17, 1983
    Assignee: Rexnord Inc.
    Inventors: Donald Tumidajewicz, Fritz A. Callies