Patents by Inventor George H. Dunbeker

George H. Dunbeker 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 for blow molding of thermoplastic articles
    Patent number: 4192843
    Abstract: A mixture of water and surfactant is introduced interiorly of a parison in the course of blow molding thereof. Lessening of die closure time and improved conformity of dimensions of molded articles to corresponding dimensions of forming dies are achieved.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: March 11, 1980
    Assignee: Rheem Manufacturing Company
    Inventors: George E. Trieschock, George H. Dunbeker
  • Method for making a plastic container having a port adjacent the container periphery
    Patent number: 4092392
    Abstract: Method for making containers having enhanced emptying capability include a filling/emptying opening disposed closely adjacent the container sidewall and extending through integral top closure structure. The container sidewall has a portion contiguous with the filling/emptying opening which extends therefrom without radial step discontinuity, thus avoiding well formation adjacent the opening. A parison is stretched unidirectionally and transversely against restraint by a blow pin to avoid buildup of material in the sidewall portion contiguous with the filling/emptying opening and the stretched parison is blow molded to form the container.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: May 30, 1978
    Assignee: Rheem Manufacturing Company
    Inventor: George H. Dunbeker
  • Molded plastic container
    Patent number: 4033473
    Abstract: Containers having enhanced emptying capability include a filling/emptying opening disposed closely adjacent the container sidewall and extending through integral top closure structure. The container sidewall has a portion contiguous with the filling/emptying opening which extends therefrom without radial step discontinuity, thus avoiding well formation adjacent the opening.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: July 5, 1977
    Assignee: Rheem Manufacturing Company
    Inventors: Paul H. Raley, George H. Dunbeker, Eugene E. Stark