Abstract: A stair lift includes a track, a carriage, a drive mechanism and a folding mechanism. The track has a main track section and a lower track section. The lower track section is pivotally mounted to the main track section and is moveable between a lowered position and a raised position. The folding mechanism shifts the lower track section to its lowered position whenever the carriage and seat approach the lowermost stairs and lifts the lower track section to its raised position as the carriage and seat move up the stairway. The folding mechanism is actuated and powered by movement of the carriage and does not require its own motor, cylinder, or other actuator.

Abstract: A manifold (24) is interposed between a pipe bracket (26) and a service valve (30) of a passenger rail car (20) braking system (22) also having a brake application relay valve (32), a primary control reservoir (48), a emergency control reservoir (54), and a main reservoir (44). The manifold includes electronically controlled emergency fill (78), normal fill (80), vent (82), and bypass (84) valves and pneumatically controlled secondary emergency fill (136), secondary normal fill (138), secondary vent (140) and manifold relay (142) valves. Electrical signals are received by the electronically controlled valves (78, 80, 84) which then operate the pneumatically controlled valves (136, 138, 142) to transmit pressure from the control reservoirs (48,54) to a brake application relay valve (32). The brake application relay valve then operates to transmit pressure from a main reservoir (44) to a braking device (36) which brakes the passenger rail car (20).