Patents by Inventor Ihui Ho

Ihui Ho 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).

  • Structure of key and lock barrel for lock set
    Patent number: 5131248
    Abstract: A new structure of key and lock barrel for lock set, comprising holder, nut, rotating body, braking bar, washers, barrel plates, covering plate and key; by inserting the key into the rectangular space of all barrel plates and by turning to let its slant faces of different depth push all barrel plates one after another to rotate and turn the notch of all barrel plates to one radial location, the braking bar falls into rotating body to let it rotate within the holder so as to drive corresponding lock plug making the lock open.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: July 21, 1992
    Inventor: Ihui Ho