Patents by Inventor Glenn D. Gregory

Glenn D. Gregory 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).

  • Patent number: 4896446
    Abstract: An adjustable comb and buttplate assembly for shoulder firearms, such as shotguns, having a stock and a recoil reducing or absorbing means at the butt end of the stock, comprises a buttplate slidably and removably mounted at the rear of the stock in engagement with the recoil absorbing means, a comb slidably mounted on the stock and interengaged with the butt plate for retaining the buttplate on the stock, the comb and buttplate being slidable as a unit relative to the stock so that the comb and buttplate may remain stationary relative to the shooter's head and body when the firearm and its stock recoil upon firing of the firearm, the comb being capable of disassociation from the buttplate to accomodate removal of the buttplate and replacement of the same by another buttplate providing a different stock length and/or a different pitchdown angle for the firearm, and means accessible from the exterior of the firearm and the stock, comb and buttplate for varying the elevation of the comb relative to the stock, t
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: January 30, 1990
    Assignee: G. Squared, Inc.
    Inventor: Glenn D. Gregory
  • Patent number: 4769937
    Abstract: A pneumatic recoil reduction device for a shotgun. The device, fitted into a cavity in the butt end of a shotgun, has an air cylinder equipped with a valved hole, or port, which is located in the end of the air cylinder, closest to the butt end of the shotgun. This permits adjusting the pressure in the air cylinder from the rear without disassemblying the butt stock.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: September 13, 1988
    Inventors: Glenn D. Gregory, Wayne E. Gilbert