Patents by Inventor Yeon-Shik AHN

Yeon-Shik AHN 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).

  • Patent number: 9709532
    Abstract: There is provided a pipeline inspection device including: a body part contacting a pipeline and accommodating the pipeline; a coupling part coupled to the body part to enclose the pipeline; and a sensor part including a sensor on at least one of one side of the body part and one side of the coupling part which are in contact with the pipeline to inspect an internal state of the pipeline. The pipeline inspection device according to exemplary embodiments is capable of inspecting pipelines without increasing a gap between the pipelines even in a case in which the gap therebetween is relatively narrow, and is capable of readily and rapidly inspecting a large area of pipelines.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: July 18, 2017
    Assignees: Korea Electric Power Corporation, Korea East-West Power Co., Ltd.
    Inventors: Doo-Song Gil, Yeon-Shik Ahn, Gye-Jo Jung, Sang-Ki Park
  • Publication number: 20150247823
    Abstract: There is provided a pipeline inspection device including: a body part contacting a pipeline and accommodating the pipeline; a coupling part coupled to the body part to enclose the pipeline; and a sensor part including a sensor on at least one of one side of the body part and one side of the coupling part which are in contact with the pipeline to inspect an internal state of the pipeline. The pipeline inspection device according to exemplary embodiments is capable of inspecting pipelines without increasing a gap between the pipelines even in a case in which the gap therebetween is relatively narrow, and is capable of readily and rapidly inspecting a large area of pipelines.
    Type: Application
    Filed: July 17, 2013
    Publication date: September 3, 2015
    Inventors: Doo-Song Gil, Yeon-Shik Ahn, Gye-Jo Jung, Sang-Ki Park
  • Patent number: 8723513
    Abstract: The present invention discloses an eddy current probe and an eddy current inspection device including the eddy current probe for inspection of surface defect of a rotor wheel including a dovetail coupling part in which a hook is formed. The eddy current probe in accordance with an embodiment of the present invention includes: a main body, a contact part coupled to the main body and having a convex part and a concave part formed thereon corresponding to the hook, and an eddy current sensor being coupled to an end part of the convex part of the contact part. Accordingly, the detectability of a defect and the permeation depth can be enhanced, and the inspection procedures can be simplified.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: May 13, 2014
    Assignees: Korea Electric Power Corporation, Korea East-West Power Co., Ltd.
    Inventors: Yeon-Shik Ahn, Sang-Gi Park, Doo-Song Gil
  • Publication number: 20120025814
    Abstract: The present invention discloses an eddy current probe and an eddy current inspection device including the eddy current probe for inspection of surface defect of a rotor wheel including a dovetail coupling part in which a hook is formed. The eddy current probe in accordance with an embodiment of the present invention includes: a main body, a contact part coupled to the main body and having a convex part and a concave part formed thereon corresponding to the hook, and an eddy current sensor being coupled to an end part of the convex part of the contact part. Accordingly, the detectability of a defect and the permeation depth can be enhanced, and the inspection procedures can be simplified.
    Type: Application
    Filed: July 29, 2011
    Publication date: February 2, 2012
    Inventors: Yeon-Shik AHN, Sang-Gi PARK, Doo-Song GIL