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. 16, 1986
Filed:
Apr. 26, 1985
Applicant:
Inventors:
Shinjiro Kimura, Ibaraki, JP;
Shigeru Toida, Ibaraki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05G / ; F16C / ;
U.S. Cl.
CPC ...
74479 ; 108143 ; 238318 ; 248657 ; 384905 ; 403 28 ;
Abstract
A positioning apparatus for accurately positioning an object such as a work has a guide track secured to the associated frame by a plurality of tightening devices each having a tightening force adjusting member. The guide track is also pressed laterally against a vertical face portion formed on the associated frame by means of a plurality of pressing plates which are affixed to the frame by other tightening devices each having a pressing force adjusting member. Both the tightening devices securely holds the guide track on the frame while allowing relative movement therebetween caused by a difference in the amount of thermal expansion.