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:
Jan. 08, 1985
Filed:
Apr. 04, 1983
Applicant:
Inventor:
Souji Ichikawa, Kanagawa, JP;
Assignee:
Mitutoyo Mfg. Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
3312 / ; 3312 / ; 2502 / ;
Abstract
In a linear scale type displacement measuring instrument capable of measuring a relative displacement between two workpieces to be measured from a relative movement between a main scale and an index scale, there are provided elastic member non-joining portions each having a pitch and a length to be determined by the material qualities of the main scale, an elongate case and elastic members to connect the main scale to the elongate case, and the length of the main scale, whereby a thermal stress acting on the main scale through the elastic members at the time of temperature change is reduced.