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:
May. 03, 1983
Filed:
Apr. 19, 1982
Applicant:
Inventor:
Siegbert Holstein, Stein, DE;
Assignee:
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
3312 / ;
Abstract
A measuring instrument having a flexible steel measuring scale mounted inside a flanged groove defined by a tubular housing includes a scanning unit, guided along the interior of the housing to scan the scale, and a magnet, mounted on the scanning unit. The magnet acts to pull the steel scale towards the scanning unit, into contact with the flanges of the groove. The spacing between the scanning unit and the flanges is precisely controlled and, therefore, the magnet provides precise control over the spacing between the scale and the scanning unit.