Patents by Inventor Hean Choi

Hean Choi 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).

  • Double button switch of a VCR
    Patent number: 5193667
    Abstract: Disclosed is a double button device on a VCR comprising a front panel where a double button being set, a cover door being hinged at an inner front panel and opened selectively whenever necessary, an outer button set outward on a cover door, a tact switch for sending an electrical signal to a printed circuit board by an inner or an outer button being pressed, an inner button set on an inner front panel to connect a tact switch with an outer button of frequent use, and a mode switch for changing the mode of a tact switch when a cover door is opened or closed.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: March 16, 1993
    Assignee: Goldstar Co., Ltd.
    Inventor: Hean Choi