Patents by Inventor Jack Trethowan

Jack Trethowan 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: 5127811
    Abstract: A bladderless tire mold press for tires including lower and upper platens and a mechanism for moving the platens relatively toward one another from an open position to a closed molding position. Each of the platens includes side wall molds for molding the tire sidewalls and thread molds for molding the tire thread. Each of the platens further includes a mechanism for molding tire beads. The tire bead molding mechanism including central mechanisms which are movable relative to their respective platens for insertion into the center of the tire.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: July 7, 1992
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventor: Jack Trethowan
  • Patent number: 4637644
    Abstract: A jig for transporting a green tire carcass in a horizontal position without causing any distortion comprising a lower bead support, a concentric tire shoulder support and a set of fingers for supporting the upper bead of the carcass.The fingers are spring biassed towards a position in engagement with the upper bead, but may be moved radially inwards while a tire carcass is either placed on or removed from the jig.
    Type: Grant
    Filed: May 9, 1985
    Date of Patent: January 20, 1987
    Assignee: W & A Bates Limited
    Inventor: Jack Trethowan