The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1998
Filed:
Jan. 30, 1997
Chang-Woo Son, Incheon, KR;
Yang-Rae Kim, Incheon, KR;
Daewoo Electronics Co., Ltd., Seoul, KR;
Abstract
An electric power switch for a vacuum cleaner which is capable of applying an electric voltage to a motor of the vacuum cleaner, capable of controlling a suction force which is established by the motor, is convenient to use, and can be manufactured at a low cost. An air suction passage for introducing an atmospheric air into a handle of the vacuum cleaner extends from a one side wall of a pipe hose toward a cover of the handle in order to communicate with the pipe hose. An operation knob is disposed in a space between the air suction passage and the cover and allows the air suction passage to selectively communicate with an air suction port, which is formed through the cover. A first supporting member for slideably supporting the operation knob extends from a bottom wall of the handle toward the cover up to an upper surface of the air suction passage. A plurality of locking grooves for setting a displacement of the operation knob are formed on an upper surface of the first supporting member. Locking grooves consist of a plurality of on-grooves and an off-groove which are arranged in a row. A second protrusion of the electric power switch selectively engages with the on-grooves and the off-groove in order to set the displacement of the operation knob.