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:
Jan. 07, 2020
Filed:
Aug. 09, 2018
Hitachi-lg Data Storage Korea, Inc., Seoul, KR;
Inwoo Lee, Seoul, KR;
HITACHI-LG DATA STORAGE KOREA, INC., Seoul, KR;
Abstract
The present invention provides a dust sensor comprising an impactor assembly for passing only relatively small particles among particles contained in air; a light emitting unit for radiating light in a path through which the air introduced through the impact assembly passes; and a light receiving unit for receiving light scattered from particles included in the air passing through the path. The impact assembly may comprise an upper case, a first impactor, and a second impactor. The upper case may include an inlet and an outer downward protruding portion. The first impactor may include a central downward depression and a plurality of slots. The second impactor may include an outlet, a central upward protruding portion, a double-bent portion, an outer upward protruding portion and a guide portion.