Patents by Inventor Patrick D. Marks

Patrick D. Marks 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).

  • Patent number: 5534093
    Abstract: A method and apparatus of applying a tire tread to a tire carcass including the steps of conveying a tread on conveyor between two self-centering guides which are slidably mounted on a frame over the conveyor, the guides having parallel rows of rollers for engaging opposite edges of the treads; adhering one end of the tread to the tire carcass on a tire building drum; rotating the tire building drum to pull the tread over the tire carcass; and applying a predetermined uniform pressure against the opposite edges of the tire tread through the rollers to uniformly resist movement of the tread toward the tire building drum and thereby uniformly stretch the tread. The apparatus includes the use of a pneumatic piston cylinder which urges the rollers against the edges of the tread, applying uniform force perpendicular to the tread's axis regardless of the width or width variations of the tread.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: July 9, 1996
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Patrick D. Marks, Michael W. Smith
  • Patent number: 5389187
    Abstract: A method an apparatus of applying a tire tread to a tire carcass including the steps of conveying a tread on a conveyor between two self-centering guides which are slidably mounted on a frame over the conveyor, the guides having parallel rows of rollers for engaging opposite edges of the treads; adhering one end of the tread to the tire carcass on a tire building drum; rotating the tire building drum to pull the tread over the tire carcass; and applying a predetermined uniform pressure against the opposite edges of the tire tread through the rollers to uniformly resist movement of the tread toward the tire building drum and thereby uniformly stretch the tread. The apparatus includes the use of a pneumatic piston cylinder which urges the rollers against the edges of the tread, applying uniform force perpendicular to the tread's axis regardless of the width or width variations of the tread.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: February 14, 1995
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Patrick D. Marks, Michael W. Smith