Patents by Inventor Wen Qian Li

Wen Qian Li 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: 6808387
    Abstract: A dual-action safety arrangement for a piezoelectric lighter includes an axle holder provided at an inner side of a casing and an ignition cap, which is slidably mounted on a ceiling of the casing in a radially movable manner about an operation axle held at the axle holder, including a depressing arm extended to rest on top of a piezoelectric unit. To ignite the piezoelectric lighter, the ignition cap must be radially and rearwardly slid to actuate a gas emitting nozzle for releasing the gas from a liquefied gas storage and simultaneously depressed to depress a movable operating part of the piezoelectric unit to generate sparks to ignite the gas emitted from the gas emitting nozzle so as to ignite the piezoelectric lighter.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: October 26, 2004
    Inventor: Wen Qian Li
  • Patent number: 6494709
    Abstract: A child resistant device, incorporated with a disposable lighter, includes a pair of shelter wheels, each having a U-shaped cross section, supported on two sides of two driving wheels respectively and partially covering circumferential teeth surfaces of the two driving wheels respectively to define an actuating edge at an uncovered portion of the circumferential teeth surface of each of the driving wheels. Therefore, the disposable lighter only allows an adult's thumb to press on the shelter wheels until the surface skin of the adult's thumb contact with the actuating edges to rotate the driving wheels so as to ignite the disposable lighter.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: December 17, 2002
    Inventor: Wen Qian Li