Patents by Inventor Kuo N. Chen

Kuo N. 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).

  • Manual driven valved piston reciprocating liquid pump
    Patent number: 5533879
    Abstract: A liquid pump comprises an insulated cylinder which is provided with a top seat and a bottom seat. The top seat is provided with a liquid inlet while the bottom seat is provided with a liquid outlet. A piston rod is fastened with the top seat and is provided at the bottom thereof with a one-way piston valve device capable of creating a vacuum in an upper chamber of the cylinder. The bottom seat comprises a receiving space in which a one-way valve device is disposed. The liquid contained in a vessel is drawn up by suction via the liquid inlet. The liquid so drawn up is discharged via the liquid outlet.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: July 9, 1996
    Inventor: Kuo N. Chen