Patents by Inventor Roy Williamson

Roy Williamson 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).

  • Muzzle blast deflector
    Patent number: 5063827
    Abstract: A muzzle blast deflector for use on a rifle having a recoil arrestor attached to the muzzle. The blast deflector is a metal cone having a central opening for installing on a threaded muzzle barrel. The recoil arrestor is threaded on the muzzle and holds the blast deflector in place. The cone projects forward and beyond gas ports of the arrestor. Expanding gases from the recoil arrestor are deflected forward, preventing shock waves from the gases from traveling toward the shooter.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: November 12, 1991
    Inventor: Roy Williamson
  • Footwear sole
    Patent number: D918551
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: May 11, 2021
    Assignee: adidas AG
    Inventors: Roy Williamson, Jochen Bartl, Olga Roman, Stephan Schneider, Kate Sinclair, Stephen Dobson, Moritz Hoellmueller