Patents by Inventor Jarvis D. Tien

Jarvis D. Tien 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: 20040069797
    Abstract: A gas extraction apparatus is used within a pressure vessel for extracting gas from the vessel while leaving liquid. A neck fitting is adapted for threaded engagement within a neck of a pressure bottle. An expansion chamber is threaded into the neck fitting. The expansion chamber extends distally and axially into the pressure bottle. The expansion chamber is threaded into the adapter fitting and a suction tube terminates with a circular flange engaged for rotation within the adapter fitting. A compression spring is fitted between the obverse side of the circular flange of the suction tube and a terminal distal surface of the expansion chamber. A seal is positioned between the reverse side of the circular flange and an internal annular surface of the adapter fitting. A further seal is positioned between the proximal end of the tube body and an annular seal retaining groove within the adapter fitting.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 15, 2004
    Inventors: Andrew Tien, Jarvis D. Tien
  • Patent number: 6508384
    Abstract: A paintball dispensing hopper has an insulating sidewall enclosing a paintball storage space with an open top. A hinged top cover moves between an open position providing access to the open top of the container for filling the storage space with paintballs, and a closed position sealing the open top of the container. All interior surfaces of the sidewall are curved in a manner for directing the paintballs toward a lower frontal dispensing tube. A dispensing valve is engaged with the dispensing tube for dispensing the paintballs by either rotation or linear motion.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: January 21, 2003
    Inventors: Andrew Tien, Jarvis D. Tien