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:
Dec. 13, 1994
Filed:
May. 20, 1993
Masaaki Kobayashi, Tokyo, JP;
Shinko Denshi Company Limited, Tokyo, JP;
Abstract
An apparatus for measuring a length of an article which is transported by a conveyor including first and second light sensors arranged along the conveyor being separated from each other by a reference distance which is similar to a minimum length or an average length of the articles, a rotary encoder secured to a roller of the conveyor ant at least one counter for counting output pulses from the rotary encoder, the counting operation of the counter being controlled by output signals from the first and second light sensors. A length of the article is calculated as a sum of the reference length and a length derived from at least one count value of the counter. The reference length can be predetermined precisely, so that the length of the article can be measured very accurately.