US 12,189,001 B2
Magnetic long-range position sensor
Jay Jamshid Khazaai, Commerce, MI (US); Perry Wehlmann, Eastvale, CA (US); and Gregory Scott DePue, Tustin, CA (US)
Assigned to Bourns, Inc., Riverside, CA (US)
Filed by Bourns, Inc., Riverside, CA (US)
Filed on Mar. 31, 2021, as Appl. No. 17/218,658.
Claims priority of provisional application 63/005,914, filed on Apr. 6, 2020.
Prior Publication US 2021/0311138 A1, Oct. 7, 2021
Int. Cl. G01R 33/07 (2006.01); G01D 5/14 (2006.01); G01R 33/00 (2006.01); G01R 33/09 (2006.01)
CPC G01R 33/072 (2013.01) [G01D 5/145 (2013.01); G01R 33/007 (2013.01); G01R 33/091 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A magnetic position sensor comprising:
a first magnetic rod including a first end and a second end;
a second magnetic rod including a third end and a fourth end, wherein the first magnetic rod and the second magnetic rod form a track with a center axis located between the first magnetic rod and the second magnetic rod, the first end and the third end are separated by a first distance, and the second end and the fourth end are separated by a second distance which is greater than the first distance;
a magnet spaced from the track by a vertical gap and configured to travel along the center axis; and
one or more magnetic sensors communicatively coupled to the magnet, wherein the one or more magnetic sensors include a first magnetic sensor fixed between the first end and the third end, and a second magnetic sensor situated below the track and configured to travel with the magnet.