Patents by Inventor Ching-Li TSAI

Ching-Li TSAI 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).

  • Publication number: 20130227872
    Abstract: A laser sight firing device is usable with an air gun, and includes a firing unit disposed on the gun barrel, a sensing unit, and a light emitter disposed on the firing unit. The firing unit includes a tubular member, and a position-limiting member extending from the tubular member. The tubular member has a tube wall formed with an air discharge hole and defining a passage. The sensing unit includes a piston disposed in the passage, a return mechanism disposed between the piston and the position-limiting member, a first chip module disposed on the piston, and a second chip module disposed fixedly in the passage. When air current flows from the air gun, the first chip module comes into contact with the second chip module to activate the light emitter to emit light.
    Type: Application
    Filed: February 27, 2013
    Publication date: September 5, 2013
    Inventor: Ching-Li Tsai
  • Patent number: 8453633
    Abstract: A spring-piston airsoft gun includes a cylinder-and-piston assembly disposed in a barrel to force air through a muzzle end to make a shooting action, and a coil spring disposed to exert a biasing action to drive a piston head of the cylinder-and-piston assembly when changed from a compressed state to a released state. Front and rear anchor shanks are disposed for respectively mounting front and rear coil segments of the coil spring. A major shell and a minor ring are sleeved on the rear anchor shank to permit the coil spring to be sleeved thereon. The minor ring is in frictional contact with and angularly moveable relative to the major shell such that, when the coil spring is released to expand to the released state, the rear coil segment is tensed to drag the minor ring to angularly move therewith so as to minimize the frictional force therebetween.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: June 4, 2013
    Inventor: Ching-Li Tsai
  • Publication number: 20120223602
    Abstract: An electric motor includes a motor housing configured with an inner receiving space, and including a surrounding wall formed with an air inlet, and an end wall formed with air outlets. The air inlet and the air outlets are in spatial communication with the inner receiving space. A rotor unit is disposed rotatably in the inner receiving space, and includes a rotor shaft extending along a pivot axis and rotatable relative to the motor housing about the pivot axis, and a rotor sleeved fixedly on the rotor shaft. A stator unit is mounted fixedly in the motor housing, and is disposed spacedly around the rotor. The rotor has an annular outer surface formed with an air groove that extends from a first end of the rotor to a second end of the rotor opposite to the first end in the pivot axis.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 6, 2012
    Inventor: Ching-Li TSAI
  • Publication number: 20110315134
    Abstract: A spring-piston airsoft gun includes a cylinder-and-piston assembly disposed in a barrel to force air through a muzzle end to make a shooting action, and a coil spring disposed to exert a biasing action to drive a piston head of the cylinder-and-piston assembly when changed from a compressed state to a released state. Front and rear anchor shanks are disposed for respectively mounting front and rear coil segments of the coil spring. A major shell and a minor ring are sleeved on the rear anchor shank to permit the coil spring to be sleeved thereon. The minor ring is in frictional contact with and angularly moveable relative to the major shell such that, when the coil spring is released to expand to the released state, the rear coil segment is tensed to drag the minor ring to angularly move therewith so as to minimize the frictional force therebetween.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 29, 2011
    Inventor: Ching-Li TSAI