Patents by Inventor Leon A. Chavis

Leon A. Chavis 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).

  • Alarm apparatus for handgun security
    Patent number: 5196827
    Abstract: An alarm apparatus for detecting the removal of a handgun from a plate where the handgun is kept for quick accessibility. Embedded sensors detect the force exerted by the handgun on the plate. A handgun is placed on the plate and upper and lower threshold controls are adjusted to create a window encompassing the force exerted by the handgun. An alarm sounds if the force on the plate exceeds the window.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: March 23, 1993
    Inventors: William J. Allen, Leon A. Chavis
  • Gas detector
    Patent number: 4340885
    Abstract: A gas detector having the features of defective sensor indication, different alarm signals for higher and lower dangerous gas levels, and an away alarm to indicate that an alarm has been activated but that the dangerous gas has by now dissipated.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: July 20, 1982
    Assignee: Super Shops, Inc.
    Inventors: Leon A. Chavis, Gordon P. Moseley