Patents by Inventor Kam Luen Hui

Kam Luen Hui 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: 20080257193
    Abstract: The toy grenade is provided with a non-destructive main casing. Smoke simulated powder is filled in a powder container in communication with a compression air cylinder. A plunger rod slidably mounted on a safety support in located at the top of the main casing. The plunger rod is operative by the removal of a pivot arm to release the compressed air from the air cylinder to force the powder to emit under pressure from two emission openings at the side wall of the main casing to provide simulation of the operation of a grenade.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 23, 2008
    Inventors: See Lap Siu, Kam Luen Hui, Lap Shan Lee
  • Patent number: 7338343
    Abstract: A toy grenade has a container enclosed in a casing consisting of two separable half oval-shaped casings. The container is filled with a mixture of powder and color dye and compressed air. The top of the container is normally retained by a spring biased elongated rod pressed down by a pivotal handle which is mounted by a removable pull pin. The grenade may be activated by removing the pull pin such that the elongated rod will retract to open the top of the container so that the compressed air will cause two casing halves to separate and the mixture of powder and color dye will spread in the air over the intended target area.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: March 4, 2008
    Inventors: See Lap Siu, Kam Luen Hui, Lap Shan Lee