US 12,092,453 B2
Absolute encoder
Katsunori Saito, Kanagawa (JP); Yasuo Osada, Saitama (JP); Hiroki Negishi, Tokyo (JP); and Norikazu Sato, Saitama (JP)
Assigned to MINEBEA MITSUMI Inc., Nagano (JP)
Appl. No. 17/441,446
Filed by MINEBEA MITSUMI Inc., Nagano (JP)
PCT Filed Mar. 24, 2020, PCT No. PCT/JP2020/013066
§ 371(c)(1), (2) Date Sep. 21, 2021,
PCT Pub. No. WO2020/203474, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-068909 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0163317 A1, May 26, 2022
Int. Cl. G01B 7/30 (2006.01); G01D 5/14 (2006.01); G01D 5/16 (2006.01)
CPC G01B 7/30 (2013.01) [G01D 5/145 (2013.01); G01D 5/16 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An absolute encoder comprising:
a first drive gear configured to rotate in accordance with rotation of a main spindle; and
a first driven gear of which a central axis is perpendicular to a central axis of the first drive gear, the first driven gear engaging with the first drive gear,
wherein the first drive gear is formed using a first material,
wherein the first driven gear is formed using a second material different from the first material, and
wherein the first material is a resin containing a filler.