Patents by Inventor Byung S. Yang

Byung S. Yang 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).

  • Device of sensing dust for a vacuum cleaner
    Patent number: 5319827
    Abstract: A device for sensing the amount of dust, refuse, etc., flowing into a dust suction tubular member of a vacuum cleaner. The device comprises a light emitting element and photoreceptor, the light emitting element and photoreceptor facing each other with a dust path between them provided in the inside of the dust suction tubular member, a detector for detecting the amount of the light supplied from the light emitting element and photoreceptor from being flush with the inside of the dust suction tubular member, a ring-shaped projection formed in the inside of the dust suction tubular member for increasing the inflow speed of the air including dust, refuse, etc., through the space between the light emitting element and photoreceptor.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: June 14, 1994
    Assignee: Gold Star Co., Ltd.
    Inventor: Byung S. Yang