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.
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.