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:
Oct. 27, 1981
Filed:
Feb. 25, 1980
John M Rodgers, Redlands, CA (US);
Other;
Abstract
Apparatus for monitoring strip loop position, having a plurality of light sources and a corresponding plurality of photo-detectors spaced from each other in the strip loop reservoir on opposite sides of the strip loop path; each photo-detector is connected to the input of a corresponding photocell amplifier which is normally biased to be driven to positive or negative saturation as a function of the input voltage applied to the photocell amplifier. The outputs of all the photocell amplifiers are coupled together through a summing junction to the input of an output amplifier for amplifying the voltage and current signals appearing at the summing junction. Display and/or control means are coupled to the output of the output amplifier.