Patent ID: 8118143
Filing Date: 2012-02-21
Classification: F16D

Abstract:
1. A braking assembly comprising: a mounting ring operable to be mounted to a machine; a braking ring threadably mounted to the mounting ring; first and second braking stops mounted to an inside surface of the braking ring; a braking insert operable to be mounted to a shaft coupled to the machine, said braking insert including a center cylinder through which the shaft extends and a chamber provided between an outer wall of the insert and the center cylinder; first and second opposing weights positioned within the chamber in the braking insert; a first braking pin rigidly mounted to the first weight and a second braking pin rigidly mounted to the second weight, said first braking pin passing through a bore in the first weight, a bore in the center cylinder and a bore in the outer wall of the insert, and said second braking pin passing through a bore in the second weight, a bore in the center cylinder and a bore in the outer wall of the insert; and a calibration device mounted to the insert and coupled to the first braking pin, said calibration device holding the first weight in a retracted position until the speed of the shaft causes the calibration device to release the first weight, which causes the first and second weights to slide under centrifugal force so as to extend the first and second braking pins beyond the outer wall of the insert and engage the first and second braking stops to cause the braking ring to rotate on the mounting ring and stop the rotation of the shaft.