Patents by Inventor Chung-Jang Wang

Chung-Jang Wang 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).

  • Coupler assembly for a pressure pump
    Patent number: 5284181
    Abstract: A coupler assembly for a pressure pump includes a vertical stand and a sheave mounted rotatably on the stand. The sheave includes a main shaft which is hollowed partially adjacent to one end of the same to define a recess and which has a through hole formed in an external surface to communicate the recess and an exterior of the main shaft. An enclosed casing is fixed in the recess and has a circular plate that is disposed opposite to a bottom of the recess. The circular plate has a pressure gauge communicated with an interior of the enclosed casing, a plurality of coupling members and a release valve to release pressure from within the enclosed casing to an exterior of the enclosed casing.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: February 8, 1994
    Inventor: Chung-Jang Wang
  • Multiple outlet electrical receptacle
    Patent number: D301576
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: June 13, 1989
    Inventor: Chung-Jang Wang
  • Stationary winch
    Patent number: D340791
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: October 26, 1993
    Inventor: Chung-Jang Wang