Patents by Inventor Gerald Grushow

Gerald Grushow 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).

  • Change of direction sensing mechanism
    Patent number: 4207770
    Abstract: In a preferred embodiment, a device incorporating a change-of-direction slip-clutch magnet unit monitors movement in a changed-direction within a range as small as 0.005 inch responsive to a force of a magnitude as small as an ounce, and the change of direction may be of any of varying direction to be detected.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: June 17, 1980
    Inventor: Gerald Grushow