Patents by Inventor Harry H. Bostrom

Harry H. Bostrom 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).

  • Power opener with manual override
    Patent number: 4137796
    Abstract: A mechanism which normally is driven by a motor, but which can be safely manually driven by a hand crank or the like in case of a power shortage or other emergency. The mechanism has a power-driven drive gear and a driven assembly which preferably includes a gear-like member, such as a worm, and a crank-receiving member, such as an internally splined hub. A disconnecting assembly which is responsive to engagement of the hand crank in the crank-receiving member is provided to disconnect the driven assembly from the power-driven drive gear.
    Type: Grant
    Filed: March 3, 1978
    Date of Patent: February 6, 1979
    Assignee: ECM Motor Company
    Inventor: Harry H. Bostrom
  • Fractional horsepower gear motor
    Patent number: 3980937
    Abstract: A fractional horsepower gear motor having improved switch actuating mechanism incorporated within the motor gearbox for operating an adjacent switch to control the rotation of the motor output shaft.
    Type: Grant
    Filed: October 24, 1974
    Date of Patent: September 14, 1976
    Assignee: Molon Motor and Coil Corporation
    Inventors: Harry H. Bostrom, John T. Joyce