Patent ID: 9239093
Filing Date: 2016-01-19
CPC Classification: F16F,F16H

Claim Text:
1. A decoupling pulley comprising; a rim securely attached to a first power transmission element, a bell securely attached to a second power transmission element one of the power transmission elements being driving and the other of the power transmission elements being driven, and a torsion spring having several turns mounted in and centered inside the bell, which spring has a first and a second end region, wherein the rim is coaxial to the bell, surrounds the bell and has at least one first drive abutment having a first face cooperating with the first end region of the spring to drive the latter in a first relative rotational direction between the rim and the bell which corresponds to a direction of closure whereas the second end region of the spring bears on a bearing face of the bell, and wherein the bell comprises at least one first bell abutment, the angular position of which defines a first given maximum value (α