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:
Jul. 21, 2009
Filed:
Sep. 25, 2007
Jang-keun OH, Gwangju, KR;
Min-ha Kim, Gwangju, KR;
Jin-gon Lee, Gwangju, KR;
Jung-gyun Han, Gwangju, KR;
Seung-yong Cha, Gwangju, JP;
Jang-keun Oh, Gwangju, KR;
Min-ha Kim, Gwangju, KR;
Jin-gon Lee, Gwangju, KR;
Jung-gyun Han, Gwangju, KR;
Seung-yong Cha, Gwangju, JP;
Samsung Gwangju Electronics Co., Ltd., Gwangju, KR;
Abstract
A dust sensing unit for use in a vacuum cleaner, which can detect whether there is dust or dirt on a surface to be cleaned and inform a user of the detected result in cleaning, is disclosed. The dust sensing unit includes a body having an air flowing passage therein to move air laden with dust or dirt drawn in through a suction nozzle, a detecting sensor disposed on the air flowing passage to detect whether the dust or dirt is passing through the air flowing passage, a lamp part to operate according to a signal outputted from the detecting sensor, a rotating part disposed to the body to rotate by air flowing through the air flowing passage, and an electric generator rotated by the rotating part to generate an electric power.