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:
Jun. 09, 1987
Filed:
May. 21, 1984
Applicant:
Inventors:
Kenji Miyahara, Ichikawa, JP;
Hisashi Sakiyama, Ichikawa, JP;
Assignee:
Mac Co., Ltd., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356152 ; 356154 ; 358107 ;
Abstract
An automatic surveying apparatus for surveying a route in tunneling work, for example, by directing a laser beam from a laser device onto a screen of a moving target to form a laser spot on the screen and detecting the positional coordinates of the laser spot on the screen by means of an image pick-up camera to obtain the positional deviation of the target with high accuracy. The angular deflections of the target can also be measured by use of a target composed of two screens and two image pick-up cameras.