Patents by Inventor Donald T. Hatin

Donald T. Hatin 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: 5188494
    Abstract: The present invention is a torque indicator device that provides a positive indication as to whether or not a threaded fastener has been tightened to a desired torque. The present invention torque indicator device is mounted under the head of a threaded fastener and is shaped so that the indicator device is displaced from beneath the threaded fastener's head as the threaded fastener is tightened to a predetermined torque. As the threaded fastener is tightened to a predetermined torque, the brightly colored indicator device falls away from the threaded fastener giving an easily observed positive indication as to whether the threaded fastener has been properly tightened.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: February 23, 1993
    Assignee: ITT Corporation
    Inventor: Donald T. Hatin
  • Patent number: 4374434
    Abstract: In a record playback cartridge of the type having a cartridge body, a stylus arm mounted within the body, a pickup stylus mounted on one end of the arm and an elongated spring-like flylead member connected between the cartridge body and a certain point in the vicinity of the stylus, the flylead normally assuming a bow-like shape, a stop member is connected between opposing walls of the cartridge body in the vicinity of the flylead to prevent the disturbance of the bow-like shape of the flylead.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: February 15, 1983
    Assignee: RCA Corporation
    Inventor: Donald T. Hatin