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. 01, 2022
Filed:
Jun. 04, 2020
Hemy8 SA, Morges, CH;
Hans Ulrich Meyer, Morges, CH;
hemy8 SA, Morges, CH;
Abstract
An inductive absolute position sensor has a scale with planar conducting features on a pattern repeating every spatial period Talong a measuring path and a reading head with planar windings: multipolar sine and cosine sense windings of spatial period T=T/M, M an integer, a unipolar first drive winding surrounding the sense windings and a multipolar second drive winding of spatial period T/N along the measuring path, with N=M±1. An electronic circuit makes a first mode measurement using the first drive winding and a second mode measurement using the second drive winding. The absolute position in a range Tis computed from both modes' measurements. The sensor may be as compact as the incremental sensor it replaces, as the scale pattern and second drive winding needed for making it absolute do not need extra space.