Patents by Inventor Bruce M. Schaaf

Bruce M. Schaaf 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).

  • Spin-check device for arrows
    Patent number: 4497207
    Abstract: A testing apparatus for arrows is disclosed. The apparatus is made up of a stand with a v-block on it. The v-block is adjustable up and down on the stand and an arrow tip support is rotatably supported on the stand it is driven by a motor with a speed control so that an arrow leaning against the v-block and its point resting on the tip support is rotated at an optimum speed so that it can be visually checked for broadhead alignment, nock alignment, and arrow straightness.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: February 5, 1985
    Inventor: Bruce M. Schaaf