Patents by Inventor Leo Chu

Leo Chu 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: 5722750
    Abstract: A sliding track assembly including an outer rail fixed to a cabinet, an intermediate rail an inner rail fixed to a drawer, a first sliding ball rack slidably connected between the outer rail and the intermediate rail, a second sliding ball rack slidably connected between the intermediate rail and the inner rail, a first stop plate fixed to the intermediate rail and having two projecting blocks for engagement with a second stop plate on the inner rail and two stop rods for stopping the second sliding ball rack in place, a second stop plate fixed to the inner rail to engage with the projecting blocks of the first plate so as to stop the drawer is place when the drawer is pulled out of the cabinet, wherein first stop plate has two parallel locating plates at the back, each locating plate having a longitudinal split and a rear bevel edge; the second sliding ball rack has two sliding faces at the bottom; the bevel edges of the locating plates guide the sliding faces of the second sliding ball rack into close conta
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: March 3, 1998
    Inventor: Leo Chu
  • Patent number: 5577821
    Abstract: A sliding track assembly including an outer rail securely fixed to the inside wall of a cabinet, an intermediate rail, an rail securely fixed to a drawer at one lateral side, a first sliding ball rack slidably connected between the outer rail and the intermediate rail, and a second sliding ball rack slidably connected between the intermediate rail and the inner rail, a first stop plate fixed to the intermediate rail at an outer end and having two projecting blocks for engagement with a second stop plate on the inner rail and two stop rods for stopping the second sliding ball rack in place, and a second stop plate fixed to the inner rail at an outer side to engage with the projecting blocks of the first stop plate so as to stop the drawer in place when the drawer is pulled out.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: November 26, 1996
    Inventor: Leo Chu