Pneumatic braking system for tractor and trailer

Details Pneumatic braking system for tractor and trailer Pneumatic braking system for tractor and trailer

1990-07-03

1992-05-26

Graham, Matthew C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 973, 303 40, 303 54, B60T 822

Patent

active

051161079

ABSTRACT:
A pneumatic braking system for a tractor and trailer which delivers air to the trailer substantially first and in a greater amount than to the tractor but which continues to deliver to the tractor until the pressure at the tractor approaches the pressure at the trailer. This gives better control and substantially avoids jack-knifing. A valve is also provided to lessen the time factor of air to the tractor when a greater braking pressure is applied. Also when "bob-tailing" only substantially 50% of air is delivered to the tractor to prevent over-braking.

REFERENCES:
patent: 3085835 (1963-04-01), Alfieri
patent: 3747992 (1973-07-01), Schnipke
patent: 3790807 (1974-02-01), Rossigno
patent: 3951464 (1976-04-01), Donahue et al.
patent: 3992064 (1976-11-01), Carton et al.
patent: 4003605 (1977-01-01), Fannin
patent: 4131324 (1978-12-01), Kurichh
patent: 4175588 (1979-11-01), Gute
patent: 4210368 (1980-07-01), Sontheimer
patent: 4324436 (1982-04-01), Reinecke
patent: 4418965 (1983-12-01), Reinecke
patent: 4641846 (1987-02-01), Ehrhart
patent: 4726626 (1988-02-01), Angelillo

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