Patents Assigned to TECH GROUP HONG KONG
  • Publication number: 20100307472
    Abstract: The present device is a launcher for a projectile, comprising an enclosure that is adapted to be held by a human hand. The enclosure comprises a barrel aperture, a pump aperture, and a trigger aperture. The launcher further comprises a pump assembly that comprises a pump piston traversing the pump aperture. The pump piston is configured to be actuated by a user and can be reciprocated in and out of a pump cylinder. The launcher comprises a compression chamber in fluid communication with the piston cylinder through a check valve that only allows air to pass from within the piston cylinder into the compression chamber. The launcher comprises a trigger that opens the compression chamber and sends compressed air into a barrel that can have a projectile stored therein. The trigger is configured to be manually operated by a user. The barrel is in fluid communication with the compression chamber through a trigger valve.
    Type: Application
    Filed: June 8, 2009
    Publication date: December 9, 2010
    Applicant: TECH GROUP HONG KONG
    Inventor: John Witzigreuter
  • Publication number: 20090084372
    Abstract: The present device is a projectile launcher using compressed air. The device includes a barrel adapted to receive the projectile proximate a rear end. The device further includes a cylinder, a piston, and a firing handle fixed to a rear side of the piston. A valve provides selective fluid communication between the cylinder and the barrel. A bolt rod is fixed to the valve. The valve is actuated when the piston is pushed to a front end of the cylinder and the firing handle comes into contact with the bolt rod. Air compressed within the cylinder by the piston is thereby being released into the barrel to propel the projectile from the barrel. The barrel further includes a bolt slidable within the barrel between a loading position and a firing position. The bolt is fixed to the front end of the bolt rod and includes a bolt air passageway.
    Type: Application
    Filed: March 20, 2008
    Publication date: April 2, 2009
    Applicant: TECH GROUP HONG KONG
    Inventor: John Douglas Witzigreuter