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. 03, 1978
Filed:
Apr. 26, 1976
Applicant:
Inventor:
Reginald Stanley Emerson, Buckingham, EN;
Assignee:
Leslie Hartridge Limited, , EN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356207 ; 250343 ; 250576 ;
Abstract
Apparatus for measuring smoke density comprising a venturi passage through which smoke can pass, and a light source and at least one light-reflecting surface arranged in the vicinity of the passage to pass and reflect a light beam transversely through the throat of the venturi to form a V-shaped or multiple V-shaped beam.