Fluid-pressure and analogous brake systems – Motorman's valves – Details
Patent
1993-09-30
1995-08-08
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Motorman's valves
Details
137797, 137868, 303 50, 303 1, 188151A, B60T 1504
Patent
active
054392764
ABSTRACT:
A tamper-resistant independent brake valve device for use in a brake equipment on railway locomotives including a main body casing carrying a movable handle, a rotatable cam, a pivotal cam dog and an exhaust and supply valve assembly, a spring housing attached to the main body casing by a plurality of one-way screws, a break-away adjusting screw for setting the maximum brake cylinder pressure on the railway locomotive, the pivotal cam dog including an enlarged head portion to preclude the insertion of a prying tool, and the pivotal cam dog having cam engaging roller which is rotated on a round head roller pin.
REFERENCES:
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patent: 4095713 (1978-06-01), Norton
patent: 4272458 (1981-06-01), Ruth et al.
patent: 4273730 (1981-06-01), Byrnes, Jr.
patent: 4526194 (1985-07-01), Miller
patent: 4718828 (1988-01-01), Breeck et al.
patent: 5000222 (1991-03-01), Moenkhaus et al.
Chovan Dale A.
Jerina Frank J.
Romansky Michael E.
Butler Douglas C.
Sotak John B.
Westinghouse Air Brake Company
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