Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Reexamination Certificate
2007-10-05
2011-10-25
Siconolfi, Robert (Department: 3657)
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
C303S009610, C303S009650, C303S123000, C188S00300R, C137S595000, C137S594000
Reexamination Certificate
active
08042882
ABSTRACT:
A braking system for a combined tractor-trailer assembly wherein a leading trailer is coupled to a towing tractor and a trailing trailer is coupled to the leading trailer. All of the wheels of the trailers are provided with brakes which may be applied and released in response to the operation of a brake control pedal operated by a driver in the tractor. The brakes also may be applied to the trailing trailer whenever the latter is parked. The brakes of the trailing trailer normally are maintained in applied condition by a spring assisted mechanism when such trailer is parked. Such mechanism normally is disabled by pressurized fluid when the trailer is in service and the pressured fluid is accessible via a valve which simultaneously enables the parking brakes and service brakes simultaneously to be coupled to and uncoupled from the pressure fluid system.
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Siconolfi Robert
Sy Mariano
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