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:
Mar. 29, 2016
Filed:
Aug. 29, 2011
Tadayuki Shibuya, Tokyo, JP;
Takuya Ookawa, Tokyo, JP;
Masao Iguchi, Tokyo, JP;
FENWAL CONTROLS OF JAPAN, LTD., Tokyo, JP;
Abstract
A photoelectric smoke sensor capable of detecting smoke with high accuracy is provided. The present invention relates to the photoelectric smoke sensor which detects smoke flowing into a housing by light. The present invention is provided with a light emitting element provided by being faced with a detection region in the housing and emitting inspection light to the detection region, a light receiving element provided at a position shifted from an optical path of the inspection light of the light emitting element by being faced with the detection region and receiving diffused light which is the inspection light having hit the smoke and diffused, so as to detect the smoke, and a reflecting member provided in the housing and deflecting and reflecting the inspection light emitted from the light emitting element so as not to enter the light receiving element.