Patents by Inventor Hoon-Joon Yoo

Hoon-Joon Yoo 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: 5679054
    Abstract: Disclosed is an apparatus for grinding the screen panel of a CRT. A jig pallet for holding the screen panel of a CRT is fixedly supported by a jig pallet support plate by means of a pivoting mechanism. The screen panel is fixedly mounted in the jig pallet by means of a plurality of fixing cylinders. A wheel-type grind felt device for grinding the surface of the screen panel is provided over the jig pallet. The rotational axis of the wheel-type grind felt device is parallel with the pivoting axis of the jig pallet. The wheel-type grind felt device contacts and grinds the portions of the surface of the screen panel in stepwise manner while the screen panel is pivoting about a pivot pin. A cooling fluid supply tube is provided for supplying a cooling liquid between the surface of the screen panel and the peripheral surface of the wheel-type grind felt device.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: October 21, 1997
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Hong-Seok Chun, Yong-Tae Song, Hoon-Joon Yoo