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. 10, 1989
Filed:
Apr. 28, 1987
Applicant:
Inventor:
Robert N West, Chislehurst, GB;
Assignee:
Sira Limited, Chislehurst, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; H01J / ;
U.S. Cl.
CPC ...
250572 ; 250235 ; 250236 ; 350-68 ;
Abstract
An inspection apparatus for inspecting, for example, sheet material, in which a beam of radiation 12 is scanned across a sheet 13 by means of a first facet 41 of a rotating mirror drum 22. Scattered radiation from the sheet is received by a second facet 46 and 2 is passed to a photodetector 49 for analysis.