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. 26, 1989
Filed:
Apr. 05, 1988
Chihiro Marumo, Kawasaki, JP;
Yoichi Toida, Kawasaki, JP;
Masatsugu Nemoto, Kawasaki, JP;
Junichi Iida, Kawasaki, JP;
Kenji Sakuma, Kawasaki, JP;
Mitutoyo Corporation, Tokyo, JP;
Abstract
The present invention is concerned with a levelling device of a roughness measuring machine and includes a device for searching a tilt angle of the center locus of a measured value of the roughness to a base line, a device for setting a tolerable tilt angle of the center locus, a comparator for determining whether the tilt angle is included in the tolerable tilt angle or not, and a device for changing the position of an object to be measured in accordance with the result of comparison by this comparator. When the tilt angle is determined to be not included in the tolerable tilt angle, a position change device is operated to change the position of the object, so that scale-out can be avoided.