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:
Mar. 07, 2006
Filed:
Apr. 23, 2004
Applicants:
Kazuhiko Kodama, Utsunomiya, JP;
Shigeru Oshima, Utsunomiya, JP;
Inventors:
Kazuhiko Kodama, Utsunomiya, JP;
Shigeru Oshima, Utsunomiya, JP;
Assignee:
Mitutoyo Corporation, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 21/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A main scale is firmly bonded to a metal tape having a desired coefficient of linear expansion by a powerful adhesive. At the same time, the metal tape is fixed to a frame by a two-sided adhesive tape so as to be capable of expansion and contraction. A length measuring apparatus is provided, wherein a scale material which is unstable with respect to variations in temperature and humidity is stabilized, thereby achieving a desired coefficient of linear expansion.