Patents by Inventor Yi-Sing Chen

Yi-Sing Chen 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).

  • Bullet cartridge for toy air gun
    Patent number: 7540280
    Abstract: A bullet cartridge for toy air gun (air soft gun BB-gun) in which a gasket member is mounted with a metal bush and stopped at an annular stop flange between a front air chamber and a rear air chamber to support a reciprocating motion of a piston rod, and a compression spring is mounted on the piston rod and stopped between the metal bush and a collar of the piston rod to hold the piston rod in the close position where the front stop flange of the piston rod is stopped at the front side of the gasket member to seal the air passage between the CO2 steel cylinder and the jet nozzle through which compressed gas passes to drive a bullet out of the toy air gun.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: June 2, 2009
    Inventors: Jhih-Wun Liao, Yi-Sing Chen
  • Bullet cartridge for toy air gun
    Publication number: 20080289613
    Abstract: A bullet cartridge for toy air gun (air soft gun BB-gun) in which a gasket member is mounted with a metal bush and stopped at an annular stop flange between a front air chamber and a rear air chamber to support a reciprocating motion of a piston rod, and a compression spring is mounted on the piston rod and stopped between the metal bush and a collar of the piston rod to hold the piston rod in the close position where the front stop flange of the piston rod is stopped at the front side of the gasket member to seal the air passage between the CO2 steel cylinder and the jet nozzle through which compressed gas passes to drive a bullet out of the toy air gun.
    Type: Application
    Filed: May 24, 2007
    Publication date: November 27, 2008
    Inventors: Jhih-Wun Liao, Yi-Sing Chen