Patent ID: 8123004
Filing Date: 2012-02-28
Classification: B61H,Y10T

Abstract:
1. A hand brake actuator for a rail car having a rotary input connected to a rotary output by a transmission including a clutch and a ratchet wheel and pawl, a declutching mechanism for disengaging the clutch in a declutched position of the declutching mechanism, and a release handle with a first cam which drives the declutching mechanism to the declutched position when the release handle is moved from an apply position to a release position, the actuator further comprising: a second cam biased in a first direction to engage and retain the declutching mechanism in a declutched position after the release handle is removed from the release position; a follower connected to the second cam and responsive to the rotation of the input in an apply direction to rotate the second cam in a second direction opposite the first direction to release the declutching mechanism and allow the clutch to reengage; and including at least one pin mounted on the ratchet wheel and the follower engages and is deflected by the pin when the input is rotated in the apply direction.