Patent ID: 8499659
Filing Date: 2013-08-06
Classification: B60T,F16D,Y10T

Abstract:
1. A gearbox, comprising: a housing, a bearing positioned within the housing, a shaft positioned within the bearing to rotate relative to the housing about a rotation axis, a gear set positioned within the housing and operably coupled to the shaft, a brake for braking rotation of the shaft about the rotation axis, a hydraulic brake release for releasing the brake to rotate about the rotation axis, an annular quill detachably fastened to and enclosed within the housing, the brake release comprising a piston configured to move axially toward the quill relative to the rotation axis to release the brake in response to hydraulic pressure, the quill positioned in contact with the bearing so as to load the bearing axially relative to the rotation axis and positioned to limit axial brake-releasing movement of the piston relative to the rotation axis, and springs urging yieldably the brake toward a braking configuration, wherein the quill comprises spring-receiving through-holes receiving respectively the springs, and the springs are positioned in contact with the housing.