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:
Aug. 08, 1989
Filed:
Oct. 02, 1987
Wolfgang Jacob-Grinschgl, Munich, DE;
Udo Muller, Unterschleissheim, DE;
Kontron Holding A.G., Zurich, CH;
Abstract
A digitizer comprising a measuring table having a substrate on which a grid is mounted, and a movable coil inductively coupled to the grid. When a time variable current is applied, a variable magnetic flux produces a measuring signal in the form of an induced voltage. The grid is a plurality of side-by-side, parallel conductors, each having opposite axial ends and arranged in pairs. A bridge is provided between adjacent ends of a plurality of the pairs of conductors. Current flowing into the opposite end of one conductor of a pair of conductors, thus, produces oppositely directed magnetic fields around the conductors of the pair, or a changing magnetic flux produced by the coil and interacting with the conductors of a pair induces voltages of opposite polarity in the conductors of the pair.