B - Operations – Transporting – 61 – H
Patent
B - Operations, Transporting
61
H
B61H 1/00 (2006.01) F16D 65/00 (2006.01) F16D 65/06 (2006.01) F16D 69/02 (2006.01) F16D 69/00 (2006.01)
Patent
CA 2311006
The present invention provides a friction management brake shoe adapted to engage the tread and the flange of a wheel of a railway vehicle via which the railway vehicle is guidably supported on a railed track. The friction management brake shoe comprises a backing plate having a flange member. There is a brake lining affixed to the backing plate and having a braking surface engageable with the wheel tread of a railway vehicle. The brake lining includes a first friction composition material formed with at least one of a solid high positive friction modifier and a solid very high positive friction modifier which establishes a required friction level between the wheel tread and the railed track for stopping a train. The brake shoe also has a flange part affixed to the flange member of the backing plate, such flange part having a friction surface engageable with the wheel flange of a railroad car wheel. The flange part includes a second friction material formed with a solid low coefficient of friction modifier which establishes a friction level of between about 0.08 and 0.15 at an interface between the wheel flange and the railed track.
Chiddick Kelvin
Formolo Joseph F.
Shute Bruce W.
Kelsan Technologies Corporation
Macrae & Co.
Westinghouse Air Brake Company
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