Patents by Inventor William E. Heap

William E. Heap 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).

  • Rectifier assembly for a lawn mower
    Patent number: 4306404
    Abstract: An electric lawn mower having a permanent magnet motor and a dynamic braking feature includes a rectifier which is assembled in a switch-box. The novel arrangement of the rectifier in the switch-box assembly is attached to an upper portion of the handle of the mower to permit use of standard three wire cord for connection between the switch-box and the motor.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: December 22, 1981
    Assignee: Canadian General Electric Company Limited
    Inventors: Edward Szymanis, William E. Heap