Patents Assigned to PDG, Inc.
  • Firearm bolt hold-open assembly and methods of use thereof
    Patent number: 11629925
    Abstract: The inventive technology is directed to a bolt hold-open system configured to lock the bolt of an AK-47 firearm, or variants of the AK-47, in an open position after the last cartridge in a magazine has been ejected.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: April 18, 2023
    Assignee: PDG, Inc.
    Inventors: Paul Wingrove, Douglas Norat
  • Reconfigurable tilt wheelchair
    Patent number: 7871094
    Abstract: A modular wheelchair assembly is adapted to be reconfigured between a fixed angle of tilt, a dynamically adjustable tilt-in-space configuration with the tilt axis being near the user's knees and a dynamically adjustable tilt-in-space configuration with the tilt axis being near the user's center of gravity. The reconfiguration is achieved by modifying a limited number of selectively removable components of the support assembly or the pivot assembly of the wheelchair.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: January 18, 2011
    Assignee: PDG, Inc.
    Inventors: Nancy Balcom, Louis Belanger, Torr Brown, Janusz Krawczynski, Phil Mundy, David Harding, David Cheng Cheng
  • Wheelchair with tiltable seat
    Patent number: 6447064
    Abstract: A wheelchair with a tiltable seat locates the tilt fulcrum between 3 and 7 inches from the front edge of the seat pan and between 1 and 4 inches below the surface of the seat pan. This minimizes the elevation of the rider's knees when in a tilted position, and allows for more stability and a shorter wheel base. Manual self-tilting is facilitated by a gas strut arrangement disposed on brackets below the seat pan, and operated by a rider-controlled valve.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: September 10, 2002
    Assignee: PDG, Inc.
    Inventors: Phil Mundy, Matt Delorme, Nancy Balcom