Patents by Inventor Edward J. Dietrich

Edward J. Dietrich 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).

  • Mechanized door operating means for a motor vehicle
    Patent number: 4121382
    Abstract: An electrically powered drive system for automatically opening and/or closing the door of a motor vehicle. An electric drive assembly including a motor and an irreversible gear box is coupled to the hinge of the door by means of a normally-disengaged clutch. Control means are provided for selectively energizing the motor and clutch. In a preferred embodiment a solenoid is coupled to the system for unlatching the door preparatory to energization of the drive motor.
    Type: Grant
    Filed: July 14, 1977
    Date of Patent: October 24, 1978
    Inventors: Edward J. Dietrich, Henry Hoiler