Patents by Inventor James Earl DeGroat

James Earl DeGroat 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).

  • Booster for handgun silencers
    Patent number: 7891282
    Abstract: A booster apparatus that is to be used with an autoloading handgun is provided. The proposed novel device utilizes a piston with five spokes which are secured against rotational movement by interfacing with five of ten indexing notches that are machined on the stopping flange of the booster housing. There are ten indexing notches provided which allows for ten positions of orientation for the silencer in relation to the bore of the host firearm. Unnecessary rotational movement is prevented by the indexing notches which are robust and secure the piston in place. This device when utilized with a handgun silencer will facilitate the proper semi automatic function of the host firearm.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: February 22, 2011
    Assignee: Advanced Armament Corp.
    Inventor: James Earl DeGroat
  • BOOSTER FOR HANDGUN SILENCERS
    Publication number: 20110036233
    Abstract: A booster apparatus that is to be used with an autoloading handgun is provided. The proposed novel device utilizes a piston with five spokes which are secured against rotational movement by interfacing with five of ten indexing notches that are machined on the stopping flange of the booster housing. There are ten indexing notches provided which allows for ten positions of orientation for the silencer in relation to the bore of the host firearm. Unnecessary rotational movement is prevented by the indexing notches which are robust and secure the piston in place. This device when utilized with a handgun silencer will facilitate the proper semi automatic function of the host firearm.
    Type: Application
    Filed: July 23, 2008
    Publication date: February 17, 2011
    Inventor: James Earl DeGroat