US Patent No. 10,921,156

ROTARY ENCODER WITH ADDITIVE MANUFACTURING FEATURES


Patent No. 10,921,156
Issue Date February 16, 2021
Title Rotary Encoder With Additive Manufacturing Features
Inventorship Andrew S. Babel, West Hartford, CT (US)
Jagadeesh Kumar Tangudu, South Windsor, CT (US)
Assignee Simmonds Precision Products, Inc., Vergennes, VT (US)

Claim of US Patent No. 10,921,156

1. A rotary encoder comprising:a planar magnetic encoder disc comprising a plurality of linear, areal, and/or other geometric magnetic features added to the planar encoder disc by additive manufacturing distributed over a surface of the encoder disc configured for attachment to an end of a rotatable shaft, wherein the linear, areal, and/or other geometric magnetic features are interrupted by blank spaces to provide additional information;
a cylindrical magnetic encoder feature comprising a plurality of linear, areal, and/or other geometric magnetic features added to a cylindrical encoder feature by additive manufacturing distributed over a surface of the encoder feature configured for attachment to an outer diameter surface of the rotatable shaft, wherein the linear, areal, and/or other geometric magnetic features are interrupted by blank spaces to provide additional information;
a first magnetic sensor positioned adjacent to the end of the rotatable shaft to detect magnetic signals from the magnetic features on the planar encoder disc; and
a second magnetic sensor positioned adjacent to the outer diameter surface of the rotatable shaft to detect magnetic signals from the magnetic features on the cylindrical encoding feature.