Patents by Inventor Charles S. Shaffer

Charles S. Shaffer 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).

  • Fish strike sensor
    Patent number: 5570532
    Abstract: A fish strike sensor adapted to mount on various surfaces and includes a cradle for supporting a fishing rod and reel. The fish strike sensor includes a movable spring retainer that releasably retains a portion of the fishing line such that when a fish strikes the bait on a fishing line the removable retainer moves a certain distance with the fishing line at which point the line is released. When the removable retainer moves, a switch is actuated which activates a buzzer and LED.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: November 5, 1996
    Inventors: Charles S. Shaffer, Mark A. Priest