Patents by Inventor Ronald D. Walther

Ronald D. Walther 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: 5946980
    Abstract: A link construction suitable for use in carrying high dynamic loads between a pair of members generally consisting of an elongated member having a pair of spaced openings for receiving the pair of members, formed of a thermoplastic material, the member having an intermediate section between the openings therein provided with an I-shaped cross-sectional configuration, and a bushing disposed in each of the openings, formed of a polyurethane material.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: September 7, 1999
    Assignee: U.S. Farathane Corporation
    Inventors: Irfan F. Raza, Ronald D. Walther
  • Patent number: 5643516
    Abstract: A process of manufacturing an article having high load absorption, durability and wear resistance properties with increased lubricity including mixing particles of polyurethane and polytetrafluoroethylene, extruding the mixture of polyurethane and polytetrafluoroethylene particles, reducing the extruded polyurethane/polytetrafluoroethylene product to particle form and molding the polyurethane/polytetrafluoroethylene extruded particles to form the article in a selected configuration.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: July 1, 1997
    Assignee: U.S. Farathane Corporation
    Inventors: Irfan F. Raza, Ronald D. Walther
  • Patent number: 5626384
    Abstract: In vehicles, such as automobile minivans, a sliding door is sometimes provided with a stabilizer assembly that includes a male part usually attached to the sliding door and a female part usually attached to a door frame that is stationary with respect to the body of the vehicle. The stabilizer assembly helps to prevent relative movement and vibration of the sliding door while the vehicle is moving. To reduce unwanted noise generated by the stabilizer resulting from relative movement between the male and female parts while in contact, the male part is formed substantially of a urethane material and the female part is formed substantially of a nylon material. Preferably, the male part may be formed partially of a fluorocarbon resin such as Teflon.TM., for added lubricity, and the female part may be formed partially of fiberglass to enhance tensile strength, a fluorocarbon resin, or barium sulphate.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: May 6, 1997
    Assignee: U.S. Farathane Corporation
    Inventor: Ronald D. Walther
  • Patent number: 5567019
    Abstract: A wheel construction generally consisting of a hub section formed of a thermoplastic polyurethane material having a first durometer hardness and a rim section formed of a thermoplastic polyurethane material having a second durometer hardness less than the first durometer hardness, molded onto the hub section to form a molecularly adhered, integral hub and rim structure.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: October 22, 1996
    Assignee: U.S. Farathane Corporation
    Inventors: Irfan F. Raza, Thomas F. Preczewski, Ronald D. Walther