Patents by Inventor Robert Hayhurst

Robert Hayhurst 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).

  • Oil reservoir
    Patent number: 5534062
    Abstract: An oil supply device for supplying oil to a roll of an image reproduction machine, which includes an oil reservoir formed of an open-cell melamine foam; and a layer of oil permeation control material extending over the reservoir for controlling supply of oil from the reservoir to the roll. The oil permeation control material being formed of porous PTFE produced by fusing particles of grannular PTFE such as to form a porous integral network of interconnected particles.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: July 9, 1996
    Assignee: W. L. Gore & Associates (UK) Ltd.
    Inventors: Keith Dawson, Robert Hayhurst