Patents by Inventor Sergey Levkov

Sergey Levkov 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: 6382200
    Abstract: A trigger mechanism having a trigger plate slidably carried in a firearm frame for linear movement. The plate includes a rear cam surface on which a sear functions via a cam follower. The plate is provided with a single hole for holding a leg or pin of a firing valve L-shaped member. The frame has a pair of aligned slots separated by the trigger plate for slidably receiving the leg or pin of the L-shaped member. A stop lug is integrally provided on the trigger plate ahead of the L-shaped member mounting hole operable to engage the frame to stop forward movement by the trigger plate. An anti-frictional coating or finish is carried on external surfaces of the trigger plate and the sear.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: May 7, 2002
    Inventor: Sergey Levkov
  • Patent number: 6286497
    Abstract: An air valve and regulator system for an air gun includes a cylindrical body having an internal air chamber operably connected at one end to a high pressure air supply. The other end of the cylinder is provided with a discharge orifice having a conical or frustro-conical member mounted coaxially with the cylinder and which partially occupies the discharge orifice so that exhausting air strikes the tapered surface and is distributed in a radial direction exteriorly of the air gun. A support brace mounts the member across the orifice and the surrounding surface of the discharge orifice is similarly tapered so that its surface is parallel with the exterior surface of the member. The space in between represents a circular discharge opening or orifice through which the high pressure exhaust is directed exteriorly of the gun. A regulator valve stem and regulator seal in movable relationship with respect to the member is provided so that reciprocal movement is permitted between the member and the stem.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: September 11, 2001
    Inventor: Sergey Levkov