US 11,867,275 B2
Belt starter generator tuning device
Xiaohua Joe Chen, Rochester Hills, MI (US); Anthony R. Mora, Rochester Hills, MI (US); and Peter Ward, Rochester Hills, MI (US)
Assigned to Gates Corporation, Denver, CO (US)
Filed by GATES CORPORATION, Denver, CO (US)
Filed on Nov. 28, 2022, as Appl. No. 18/059,352.
Claims priority of provisional application 63/284,436, filed on Nov. 30, 2021.
Prior Publication US 2023/0167893 A1, Jun. 1, 2023
Int. Cl. F16H 55/36 (2006.01); F16D 3/12 (2006.01); F16D 41/20 (2006.01)
CPC F16H 55/36 (2013.01) [F16D 3/12 (2013.01); F16D 41/206 (2013.01); F16H 2055/366 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A tuning device comprising:
a pulley structure for receiving a belt on an external surface;
a torsion spring positioned internal to the pulley structure, with a first end of the torsion spring fixed to a spring retainer fixed to the pulley structure and a second end of the torsion spring fixed to a spring stop ring;
a shaft extending internal to the torsion spring, the shaft having a flange with at least one recess having an arcuate length; and
the spring stop ring having at least one outwardly extending tab configured to fit within the at least one recess in the flange, the tab having an arcuate length less than the arcuate length of the recess,
wherein the pulley structure, the torsion spring and the shaft have a common rotational axis.