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:
Sep. 27, 2022
Filed:
Oct. 05, 2020
Hochiki Corporation, Tokyo, JP;
Hochiki Corporation, Tokyo, JP;
Abstract
Provided is a detectorattached to an installation surfaceof a ceiling, the detectorhaving an attachment surfacefacing the installation surface, in which the detectorincludes a light shielding spaceinto which smoke flows, a light emitting unitand a light receiving unitthat detects smoke flowing into the light shielding space, an outer coverthat accommodates the light emitting unit, the light receiving unit, and the light shielding space, an outer cover-side inner side inflow/outflow openingand an outer cover-side outer side inflow/outflow openingthat allow gas containing smoke to flow into and flow out of the light shielding space, the outer cover-side inner side inflow/outflow openingand the outer cover-side outer side inflow/outflow openingbeing provided toward an opposite side from the attachment surfacein the outer coverwith reference to a direction substantially orthogonal to the attachment surface, and a main body-side inclination portionand a guide portion-side inclination portionthat guide gas so that gas flows into the light shielding spacethrough the outer cover-side inner side inflow/outflow openingand the outer cover-side outer side inflow/outflow opening