Patents by Inventor Pil Kee KIM

Pil Kee KIM 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).

  • Active energy harvesting device
    Patent number: 9520763
    Abstract: Disclosed is an active energy harvesting device. The device includes a rigid body configured to vibrate corresponding to vibration of an external vibration body and including a first end at which an energy harvesting structure is provided to convert mechanical energy into electric energy, a magneto-rheological material provided at a second end of the rigid body to be bound to the rigid body and including a material which is changed in elastic force according to the surrounding magnetic field strength, a fixing unit for binding the second end of the rigid body and the magneto-rheological material and connecting the rigid body to the external vibration body, and a first permanent magnet arranged symmetrically apart from the magneto-rheological material while interposing the magneto-rheological material therebetween and provided so as to adjust a gap from the magneto-rheological material and change an elastic coefficient of the magneto-rheological material according to the gap.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: December 13, 2016
    Assignee: CHUNG-ANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Jong Won Seok, Wan Sun, Pil Kee Kim, Jee Hyun Jung
  • ACTIVE ENERGY HARVESTING DEVICE
    Publication number: 20150280538
    Abstract: Disclosed is an active energy harvesting device. The device includes a rigid body configured to vibrate corresponding to vibration of an external vibration body and including a first end at which an energy harvesting structure is provided to convert mechanical energy into electric energy, a magneto-rheological material provided at a second end of the rigid body to be bound to the rigid body and including a material which is changed in elastic force according to the surrounding magnetic field strength, a fixing unit for binding the second end of the rigid body and the magneto-rheological material and connecting the rigid body to the external vibration body, and a first permanent magnet arranged symmetrically apart from the magneto-rheological material while interposing the magneto-rheological material therebetween and provided so as to adjust a gap from the magneto-rheological material and change an elastic coefficient of the magneto-rheological material according to the gap.
    Type: Application
    Filed: October 31, 2014
    Publication date: October 1, 2015
    Inventors: Jong Won SEOK, Wan SUN, Pil Kee KIM, Jee Hyun JUNG