Patents by Inventor Chang Mook Chun

Chang Mook Chun 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).

  • Publication number: 20140024981
    Abstract: The wearable vibratory stimulation device includes: a measuring instrument for obtaining data relating to a body motion of a user who wears the vibratory stimulation device; a walking pattern database for storing normal walking pattern data collected by measuring general persons having normal walking patterns and information about an inherent walking pattern analysis result of a specific user; a controller for analyzing the body motion information of the user, transmitted from the measuring instrument, by comparing with the walking pattern data stored in the walking pattern database, and generating a stimulation signal to be applied to a specific body portion of the user; and an exciting unit for applying a vibratory stimulation to the specific body portion in response to the stimulation signal transmitted from the controller.
    Type: Application
    Filed: May 7, 2013
    Publication date: January 23, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chang Mook CHUN, Choong Hyun KIM, Jun Ho CHOI, Seung Jong KIM
  • Patent number: 8434384
    Abstract: Disclosed herein is a weight compensation mechanism. A weight compensation mechanism is installed in a link member rotatable in a plurality of directions. The weight compensation mechanism includes a plurality of bevel gears that rotates in harmony with the rotation of the link member. Cam plates are connected to one or more of the bevel gears to be rotated together with the bevel gears. Weight offsetting parts are connected to the cam plates, respectively, and each of the weight offsetting parts compresses an elastic member based on the rotation of the link member and the cam plate to absorb gravitation generated by the weight of the link member.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: May 7, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Sung Chul Kang, Woo Sub Lee, Chang Mook Chun, Chang Hyun Cho
  • Patent number: 8366560
    Abstract: A coupling device has a flexible member that is vertically connected to a rotating shaft and of which the length can be varied in an inward and outward direction with respect to the rotating shaft, an elastic member that is connected to the flexible member and causes the flexible member to receive an elastic force in the outward direction with respect to the rotating shaft, and a cam member that is rotatably connected to the rotating shaft and delivers a rotating force of the rotating shaft to a rotating member. The cam member has a through-hole having an initial-position portion in which the flexible member is positioned at the initial stage and a displaced-position portion which has a smaller diameter than the initial-position portion and of which the diameter is constant about the rotating shaft, and an another through-hole having an initial-position portion in which the flexible member is positioned and a return-position portion of which the radius decreases from the initial-position portion.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: February 5, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Woo Sub Lee, Sung Chul Kang, Mun Sang Kim, Jun Ho Choi, Chang Mook Chun
  • Publication number: 20110271784
    Abstract: Disclosed herein is a weight compensation mechanism. A weight compensation mechanism is installed in a link member rotatable in a plurality of directions. The weight compensation mechanism includes a plurality of bevel gears that rotates in harmony with the rotation of the link member. Cam plates are connected to one or more of the bevel gears to be rotated together with the bevel gears. Weight offsetting parts are connected to the cam plates, respectively, and each of the weight offsetting parts compresses an elastic member based on the rotation of the link member and the cam plate to absorb gravitation generated by the weight of the link member.
    Type: Application
    Filed: August 24, 2010
    Publication date: November 10, 2011
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sung Chul KANG, Woo Sub LEE, Chang Mook CHUN, Chang Hyun CHO
  • Publication number: 20110081976
    Abstract: The present invention relates to a device for generating limit torque, which generates a rotational displacement to protect a rotating device and automatically returns to the initial position when an external force is eliminated, and a rotating device using the same. The device includes a flexible member that is vertically connected to a rotating shaft and of which the length can be varied in an inward and outward direction with respect to the rotating shaft; an elastic member that is connected to the flexible member and causes the flexible member to receive an elastic force in the outward direction with respect to the rotating shaft; and a cam member that is rotatably connected to the rotating shaft and delivers a rotating force of the rotating shaft to a rotating member. The cam member has a through-hole in which a rotational displacement is generated and through which the flexible member returns to the initial position.
    Type: Application
    Filed: July 22, 2008
    Publication date: April 7, 2011
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Woo Sub Lee, Sung Chul Kang, Mun Sang Kim, Jun Ho Choi, Chang Mook Chun