Patents by Inventor Donald W. McKinney

Donald W. McKinney 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).

  • Crimping apparatus with heating and cooling cage
    Patent number: RE28906
    Abstract: A stuffer crimper having a closed housing forming a heating chamber and a set of spaced rods supporting the core of crimped yarn and holding the core spaced from the walls of the housing. Choke members engage the sides of said core near the inlet end of said heating chamber to control the back pressure of the core. Steam under low pressure is introduced into the chamber between the walls and the core and is caused to permeate the core and act as a heat transfer agent to facilitate the setting of the crimp.
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: July 20, 1976
    Assignee: Indian Head Inc.
    Inventors: Donald W. McKinney, Henry A. Sinski