B - Operations – Transporting – 61 – H
Patent
B - Operations, Transporting
61
H
B61H 13/02 (2006.01) B60T 7/12 (2006.01) B61H 13/00 (2006.01)
Patent
CA 2251998
A power source activated handbrake release mechanism for automatically releasing a parking brake assembly for a railroad vehicle braking system is provided. The power source activated handbrake release mechanism includes a hydraulically or pneumatically activated piston assembly including a piston rod mounted for movement upon activation of a piston within the piston assembly. An elongated member is associated at one end with this piston rod such that it moves laterally with respect to a bottom surface of the piston rod upon vertical movement of this piston rod. Another end of the elongated member is secured with the release shaft of the handbrake such that the lateral movement of the elongated member results in a rotational force being applied to the release shaft causing the automatic release of the handbrake. A system is also provided which allows the quick release handle of the handbrake to remain stationary during application of a rotational force to the release shaft via the power source activated handbrake release mechanism of the invention while maintaining the ability for an operator to manually release the handbrake with this handle should a power source be unavailable.
Macrae & Co.
Westinghouse Air Brake Company
LandOfFree
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