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:
Aug. 01, 1978
Filed:
Jul. 07, 1976
Tsunehiko Araki, Takarazuka, JP;
Yoshihiko Okuda, Izumi, JP;
Matsushita Electric Works, Ltd., Osaka, JP;
Abstract
A light scattering type smoke detector effectively sensitive both to white and black smokes is provided. A wave length .lambda. of an incident light from a light source and a scattered light receiving angle .theta. defined by the direction of the incident light and the direction connecting between a smoke particle and a light receiving element are so determined as to satisfy .lambda. .ltoreq. 950 m.mu. when .theta. .ltoreq. 45.degree., .theta. .ltoreq. - 0.18 .lambda. + 216 when 45.degree. .ltoreq. 135.degree. and .theta. .ltoreq. 135.degree. when .lambda. .ltoreq. 450 m.mu..
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile