Patents by Inventor Donald J. Rise

Donald J. Rise 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 assembling and joining thermoplastic container sections by friction welding
    Patent number: RE29448
    Abstract: .Iadd.Method and apparatus for spin-welding thermoplastic articles in which two axially mating sections are driven in rotation relative to each other and then axially abutted in mating relationship. One of the two mating sections is chucked to an inertia member which is brought up to speed by a rotary drive. The rotary drive is uncoupled as the sections are moved into axial abuttment and the braking of the inertia member by the axial abuttment of the sections is transformed into frictional heat which welds the sections to each other. Apparatus for spin welding sections on a production line basis is disclosed. .Iaddend.
    Type: Grant
    Filed: January 17, 1977
    Date of Patent: October 18, 1977
    Assignee: Koehring Company
    Inventors: Gaylord W. Brown, Donald J. Rise, Robert T. Johnson