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:
Nov. 05, 2013
Filed:
Dec. 17, 2010
Josef Siraky, Donaueschingen, DE;
Florian Grieshaber, Schönwald, DE;
Josef Siraky, Donaueschingen, DE;
Florian Grieshaber, Schönwald, DE;
Sick Stegmann GmbH, Donaueschingen, DE;
Abstract
A length measurement apparatus () has a bistable magnetic element (), an elongated physical scale () with a plurality of measurement graduation elements () spaced apart from one another and a reading head () movable relative to the physical scale () in its longitudinal extent and which includes a first and second reading head magnet () arranged transverse to the longitudinal extent and with opposite polarity to one another. The measurement graduation elements () each have a magnetic short-circuit element () to suppress the magnetic field () of the first reading head magnet () in a first relative position of the reading head () and the magnetic field () of the second reading head magnet () in a second relative position of the reading head ().