Patents by Inventor William H. Selzer

William H. Selzer 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).

  • Model airplane engine starter and drive train
    Patent number: 4651688
    Abstract: A model internal-combustion engine having a rotatable shaft driven by an engine, a propeller secured to said shaft, and a combined self-starting mechanism and propeller drive in the form of a plastic cylindrical connector mounted coaxially on the shaft with one end thereof in driving relation against the propeller, the connector including a metal hub imbedded therein, the hub being fixedly mounted on said shaft for driven rotation therewith and having a knurled end thereof bearing against said propeller to drive the same, the connector having ramp-defining walls adjacent a spring-engaging element at one of its ends, and a helically wound spring surrounding the shaft, anchored at one end to a stationary part of the engine and having a free end bearing against the ramp-defining walls of the connector with a hook formed thereon to automatically engage the spring-engaging element of the connector and thereby energize the spring when the propeller and connector are rotated in a contra-normal direction and to other
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: March 24, 1987
    Assignee: Cox Hobbies, Inc.
    Inventors: William H. Selzer, J. Dale Kirn
  • Radio transmitter control for model airplanes
    Patent number: D331083
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: November 17, 1992
    Assignee: Cox Hobbies, Inc.
    Inventors: Daniel Gunderson, William H. Selzer