Patents by Inventor John Son Liu

John Son Liu 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: 5395146
    Abstract: A golf ball pick-up device mainly including a casing with an open bottom, an upper transmission tube inserted into the casing, a guiding cylinder fitted over the upper transmission tube, a seat engaged with a lower end of the guiding cylinder and fixedly connected with a lower end of the casing, and a spring-loaded sliding plate slidably fitted in the recess of the seat, whereby the golf ball picked up therein can be easily dispensed as desired.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: March 7, 1995
    Inventors: John Son Liu, Lai Chemg Wei
  • Patent number: 5143399
    Abstract: This invention relates to a golf cart and in particular to one which includes an upper rod with a handle grip, a pivot joint having an upper member, a lower member and a U-shaped member, a seat fixedly locked on the bottom of the upper member, an axle member having pivot seat, and a supporting seat fixedly mounted on the lower end of the lower rod, whereby the handle grip can be adjusted in height as desired and the golf cart may be easily assembled and provide a sturdy construction.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: September 1, 1992
    Inventor: John Son Liu