Patent ID: 9528596
Filing Date: 2016-12-27
CPC Classification: F16D,F16H

Claim Text:
1. A gear box comprising: a housing including structural members defining a hollow interior of the housing; a planetary gear train contained in the housing hollow interior, the planetary gear train comprising a sun pinion engaging at least one planet gear, the at least one planet gear being rotatably mounted to a planet gear carrier, the planet gear carrier being configured to drive an output shaft, the output shaft being configured to be operatively connected to a load, the at least one planet gear being configured to rotate within a ring gear; and a clutch comprising a hub and a coupling, the coupling being operatively mounted to the ring gear, the hub and the coupling each having a drive portion, the hub drive portion and coupling drive portion being movable relative to each other between an engaged position and a disengaged position, wherein in the engaged position, the hub drive portion and the coupling drive portion are engaged in a manner to allow torque to be transmitted between the hub and the coupling, wherein the disengaged position the hub drive portion and the coupling drive portion are spaced apart in a manner to prevent torque from being transmitted between the hub and the coupling, the clutch having an actuator configured to move the hub drive portion and the coupling drive portion between the engaged position and the disengaged position, wherein in moving the hub drive portion and the coupling drive portion to the engaged position, the actuator is driven by spring pressure exerted by at least one spring operatively bearing on the actuator, and wherein in moving the hub drive portion and the coupling drive portion to the disengaged position, the actuator is driven by hydraulic pressure operatively applied against the actuator sufficient to overcome the spring pressure exerted by the at least one spring; wherein the hub is operatively mounted to at least one structural member of the housing.