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. 07, 1989
Filed:
Apr. 10, 1987
Tadashi Hirata, Yamato, JP;
Katsumi Koyama, Hiratsuka, JP;
Hideaki Takahashi, Atsugi, JP;
Yasuhiro Harashima, Atsugi, JP;
Michio Kitahara, Atsugi, JP;
Katsuyuki Igarashi, Itabashi, JP;
Jun Kitamura, Yokohama, JP;
Hiroshi Kikuchi, Tokyo, JP;
Kimiyuki Narisada, Tokyo, JP;
Amada Company, Limited, , JP;
Abstract
To detect a line position described on a surface by a simple structure, the line position detecting apparatus comprises a light beam generator including a laser diode, a collimator, a prism, and a mirror; a motor for rotating a laser beam to describe a circular locus on the surface; an encoder for detecting a laser beam angular position; a photosensor for detecting a laser beam reflected from the surface; and a calculator for detecting an angular position at which light beam intensity changes due to the presence of the line at at least one point of intersection between the line and the circular locus and for calculating the point indicated by x-y coordinates on the basis of the diameter of the circular locus and the detected angular position of a line to be detected.