Patents by Inventor Tian-Ding Hwang

Tian-Ding Hwang 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: 4827764
    Abstract: A needle-type tire pressure gauge includes a drum body having a closed end and an open end defining therebetween a receiving room, a tire pressure taking means communicating with the receiving room and having a head having an annular indentation and an air intake communicating with the indentation, a tire pressure actuated means pivotally mounted in the receiving room, having a toothed surface and connected to the tire pressure taking means, a resilient means connected between the receiving room and the tire pressure actuated means for the restoration of the tire pressure actuated means, a gear rotatably mounted in the receiving room and meshing with the toothed surface, and a gear stopping means for temporarily stopping the rotation of the gear for a convenient reading of the position of a needle which is connected to the gear and pivotally mounted on a cover which has a scale thereon and engages the open end so that when the tire pressure a actuated means is actuated by an air coming from the tire pressure
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: May 9, 1989
    Inventor: Tian-Ding Hwang
  • Patent number: D320170
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: September 24, 1991
    Inventor: Tian-Ding Hwang