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:
Feb. 21, 1995
Filed:
Apr. 06, 1993
Applicant:
Inventor:
Pier L Migliorini, Terranuova Bracciolini, IT;
Assignee:
Solis S.R.L., Florence, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250559 ; 2502 / ; 250563 ; 356430 ;
Abstract
The apparatus has an optical reflecting sensor, an operational amplifier buffer with the electrical input connected to the output of the optical sensor, structure for averaging and delating a signal picked up at the output of the sensor, structure for the differential amplification of the signals on output respectively from the buffer and structure for comparing the signal outputting from the means with a known predetermined signal.