Patents by Inventor Raimo Ruohonen

Raimo Ruohonen 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).

  • Cartridge for spraying a liquid into the barrel of a firearm
    Patent number: 5421263
    Abstract: A cartridge for firearms, comprising a shell (1), a primer disposed in the shell, and a liquid space containing a liquid (5) to be spread on the inner surface of a barrel. According to the invention, the liquid space (3a) is formed by a cylinder within which there is mounted a piston (4). When the primer (2) is detonated by the action of a firing pin, the piston (4) propels the liquid (5) in front of it, whereby the liquid (5) expels a plug (6) from the orifice through which oil is to be sprayed and spreads as a spray on the inner surface of the barrel.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: June 6, 1995
    Assignee: Raikka Oy
    Inventor: Raimo Ruohonen