Patents by Inventor Inhan Chang

Inhan 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).

  • Wheel
    Patent number: 11254161
    Abstract: A wheel includes a body (10) having a cylindrical outer circumference; a first ring member (21) provided at one side edge of the body (10) in the form of a protruding ring; a second ring member (22) provided at the other side edge of the body (10) in the form of a protruding ring; a rotation ring (30) located between the first ring member (21) and the second ring member (22) and located out of the body (10) and rotatably coupled thereto; a plurality of pivoting plates (40) coupled to the rotation ring (30) to be pivotal outward and configured to protrude out of the rotation ring (30); a connection member (50) located between the plurality of pivoting plates (40) to connect the first ring member (21) and the second ring member (22) and serve as a stopper for limiting a pivoting range of the pivoting plate (40); a first opening (31) formed at the rotation ring (30) along a rotation direction of the rotation ring (30); a second opening (11) formed at the body (10) at a position corresponding to the first opening
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: February 22, 2022
    Inventor: Inhan Chang
  • WHEEL
    Publication number: 20200156406
    Abstract: A wheel includes a body (10) having a cylindrical outer circumference; a first ring member (21) provided at one side edge of the body (10) in the form of a protruding ring; a second ring member (22) provided at the other side edge of the body (10) in the form of a protruding ring; a rotation ring (30) located between the first ring member (21) and the second ring member (22) and located out of the body (10) and rotatably coupled thereto; a plurality of pivoting plates (40) coupled to the rotation ring (30) to be pivotal outward and configured to protrude out of the rotation ring (30); a connection member (50) located between the plurality of pivoting plates (40) to connect the first ring member (21) and the second ring member (22) and serve as a stopper for limiting a pivoting range of the pivoting plate (40); a first groove (31) formed at the rotation ring (30) along a rotation direction of the rotation ring (30); a second groove (11) formed at the body (10) at a position corresponding to the first groove (3
    Type: Application
    Filed: April 26, 2018
    Publication date: May 21, 2020
    Inventor: Inhan Chang