Patents by Inventor Hyo C. Yu

Hyo C. Yu 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: 5608589
    Abstract: A tape running system for a slide loading type magnetic recording and reproducing apparatus. The system comprises a stationary base plate mounted on a deck mechanism of the apparatus, a slide base mounted on the stationary base plate such that it is reciprocated with respect to the stationary base plate within a predetermined range, a pair of loading gears mounted on the lower surface of the stationary base plate and engaging with each other and connected to a pair of slant post assemblies through individual loading levers, and a rotational force transmitting unit transmitting the rotational force of the loading gears to the slide base for driving the slide base. The rotational force transmitting unit is connected between one of the pair of loading gears and the slide base and linearly reciprocates the slide base using the rotational force of the loading gears.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: March 4, 1997
    Assignee: Goldstar Co., Ltd.
    Inventors: Myung G. Kang, Seong S. Kang, Sung H. Choi, Mun C. Joung, Byoung G. Jang, Kye Y. Ryu, Hyo C. Yu, Sang J. Lee
  • Patent number: 5543981
    Abstract: A pivotable cassette housing for a magnetic recording and reproducing apparatus, comprising a pivotable bracket formed of a single metal plate, to have an integral construction, and a cassette holder mounted in the bracket and adapted to receive a tape cassette therein. The pivotable bracket has a pair of side walls and a pair of connecting portions integrally formed with the side walls and adapted to connect the side walls with each other, one of the connecting members having a cross section with a stepped shape and the other having a cross section with a shape having opposite protruded ends. Each of the side walls has a guide pin extending inwardly from an inner surface of the side wall and the cassette holder has a guide slot for receiving the guide pin, to mount the cassette holder in the bracket.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: August 6, 1996
    Assignee: Goldstar Co., LTD.
    Inventors: Myung G. Kang, Seong S. Kang, Sung H. Choi, Mun C. Joung, Byoung G. Jang, Kye Y. Ryu, Hyo C. Yu, Sang J. Lee
  • Patent number: 5511737
    Abstract: A brake device for a magnetic recording and reproducing apparatus, such as a slide loading type camera recorder. The supply reel brake unit includes a supply reel brake having an operating pin, and a mode switch gear having an operating protrusion pushing the operating pin in a tape running mode, thereby releasing the tape supply reel table. In addition, the supply reel brake unit may comprise a drive cam gear, a supply reel brake cooperating with the drive cam gear to selectively brake the tape supply reel table.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: April 30, 1996
    Assignee: Goldstar Co., Ltd.
    Inventors: Myung G. Kang, Seong S. Kang, Sung H. Choi, Mun C. Joung, Byoung G. Jang, Kye Y. Ryu, Hyo C. Yu, Sang J. Lee
  • Patent number: 5386333
    Abstract: A head drum cleaning device for a magnetic recording and reproducing apparatus comprising a head cleaning lever pivotally mounted to a fixed base plate of the apparatus by a pin fixed to the fixed base plate, a cleaning roller rotatably mounted to one end of the head cleaning lever by a pin fixed to the head cleaning lever, a drive member constituted by a part of a slide base of the apparatus and adapted to drive the head cleaning lever, and a head cleaning lever rotating unit operatively connected to the drive member and adapted to pivot the head cleaning lever through two steps, namely, in toward the drum and then in the reverse direction. The head drum cleaning device has a simple construction capable of achieving a smooth cleaning operation, in that the head cleaning lever is actuated by the drive member mounted to the slide base to clean the rotating head drum. The head drum cleaning device can be applied to compact camcorders such as 8 mm camcorders using the slide base.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: January 31, 1995
    Assignee: Goldstar Co., Ltd.
    Inventors: Myung G. Kang, Seong S. Kang, Sung H. Choi, Mun C. Joung, Byoung G. Jang, Key Y. Ryu, Hyo C. Yu, Sang J. Lee