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. 05, 1980
Filed:
Jun. 22, 1978
Applicant:
Inventors:
Mitsuo Hasegawa, Tokyo, JP;
Yoshinori Shinohara, Tama, JP;
Takashi Suzuki, Tokyo, JP;
Akira Yokota, Hino, JP;
Assignee:
Nittan Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250574 ; 356338 ;
Abstract
A smoke detector having a housing including openings for admission of smoke, a smoke detecting chamber within said housing with the wall of said chamber formed of spaced overlapping elements which form a serpentine path therebetween, means on one side of said chamber for emitting light into said chamber, a light detector adjoining and shielded from said light source and a conical reflector in said chamber and on a side opposite said light source and detector.