Patents by Inventor Keun I. Chang

Keun I. Chang 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).

  • Cable chain for automobile tire
    Patent number: 5103885
    Abstract: A cable chain for mounting on an automobile tire to provide improved traction in snow or ice conditions, comprises two longitudinal cables and a plurality of transverse cables each having two ends attached to the two longitudinal cables respectively. When the longitudinal cables are mounted on the tire and extend substantially peripherally thereof at opposite respective sides of the tire, the transverse cables extend across the tire tread. Traction sleeves are mounted on at least one of the transverse cables, and each traction sleeve has multiple lateral faces each having two substantially planar edge regions and a recessed portion therebetween.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: April 14, 1992
    Inventor: Keun I. Chang
  • Helical cable tire chain having multi-angular traction sleeves and rubber rings
    Patent number: 4830078
    Abstract: A helical cable tire chain having a series of small multi-angular metal traction sleeves, a series of rubber rings, which are supported on a helical cable when it is attached to a tire so that the chain enhances the traction and gripping power on ice or snow.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: May 16, 1989
    Inventor: Keun I. Chang