Fluid-pressure and analogous brake systems – Load control – Railway vehicle
Patent
1989-12-15
1991-08-13
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Load control
Railway vehicle
303 226, B60T 818
Patent
active
050391747
ABSTRACT:
Empty/load braking apparatus for individually controlling the braking of the trucks of railway cars and an empty/load valve unit for such use and adapted to be mounted on each truck. The valve unit has a body with a canister as a part thereof or secured thereto with a changeover spool in the body and operable by a load sensing arm, with an air passageway extending between an inlet for receiving pressurized air from the conventional air line and an outlet for connection to a brake cylinder, with a proportional spool for controlling the air passing through the passageway, with a release spool for quick release of air from the brake cylinder upon brake release and with a check valve for preventing the entrance of air into the canister from the braking apparatus during brake release.
REFERENCES:
patent: 3671086 (1972-06-01), Scott
patent: 3838893 (1974-10-01), Dalibout et al.
patent: 3883188 (1975-05-01), Wickham
patent: 3960411 (1976-06-01), Beacon
patent: 4235478 (1980-11-01), Billeter
patent: 4364609 (1982-12-01), Wickham
patent: 4648661 (1987-03-01), Schmitt
patent: 4801179 (1989-01-01), Hintner
patent: 4826259 (1989-05-01), Biegel
Beacon Robert G.
Dauber Neal
Shepherd Robert
Ellcon National, Inc.
Muratori Alfred
Oberleitner Robert J.
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