Patents by Inventor Ronald E. Trudeau

Ronald E. Trudeau 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).

  • Shotshell cartridge adapter
    Patent number: 4702170
    Abstract: A shotshell cartridge adapter is disclosed that enables safe firing of subcaliber rim-fire shot cartridges in conventional shotguns. In the preferred embodiment, the invention comprises an outer hull shaped like a standard shotgun shell; an adapter tube fixed within the hull; and a cylindrical firing pin mechanism removably housed within the lower end of the tube. This firing pin mechanism has a recessed piston-shaped firing pin with a chisel-pointed protrusion that strikes a shot cartridge loaded in the adapter.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: October 27, 1987
    Inventor: Ronald E. Trudeau
  • Multimodal high pressure waveguide window
    Patent number: 4032868
    Abstract: A multimode waveguide window which provides an RF connection through a me barrier such as the hull of a submarine. RF transmission is effected with a minimum of insertion loss and the structure is capable of withstanding hydrostatic pressures up to 1000 psi. In the event that the incoming waveguide structure is accidentally severed from the ship, the window provides a watertight seal.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: June 28, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Ronald E. Trudeau