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. 10, 1987
Filed:
Nov. 08, 1985
Nagahiko Nagasaka, Iruma, JP;
Kabushiki Kaisha Yaskawa Denki Seisakusho, Fukuoka, JP;
Abstract
A linear resolver wherein a stator is made of a magnetic material and is toothed at equal pitches along the direction of measurement, and a movable element is an electromagnet made of an E type or C type core around which a primary single phase winding W.sub..theta. is wound, the surface of the movable element facing the stator and constituting part of a magnetic path of the linear resolver being provided with detection secondary windings bonded to the surface, and the detection secondary windings each having as its winding pitch a half the pitch between the teeth of the stator; wherein the movable element is supported relative to the stator with a constant gap therebetween and guided in sliding relation to the stator only in the longitudinal direction of the stator.