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4763959 |
Electronic control for fluid pressure braking system
A fluid pressure braking system includes pressure sensors in each of the supply and service reservoirs and in the supply line to the trailer. The system includes an air compressor which is loaded...
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4763958 |
Apparatus for matching the brake pressure of vehicle combinations to the actual load
Apparatus for matching the brake pressure of vehicle combinations to the actual load comprising tranducers (36, 41) for adjusting the brake pressure of the units (10, 13) included in the vehicle...
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4758051 |
Proportioning control valve with spring biased control piston
A proportioning control valve for a fluid pressure braking system for a tractor-trailer combination vehicle permits unproportioned communication of control pressure when the tractor is pulling a...
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4756390 |
Remote braking system
An improved remote braking system (10, 100) is provided which allows simultaneous actuation of the braking system of a motor home (12) and an automobile (14) towed behind the motor home. An...
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4749238 |
Electronically controlled fluid pressure braking system
An electronically controlled fluid pressure braking system for a heavy duty vehicle includes an operator controlled mechanism which generates independent brake pressure command signals, each of...
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4743076 |
Anti-skid brake control systems
An anti-skid brake control system for a vehicle having a first and a second set of wheels with each wheel being provided with a brake and a brake actuator. The first set of wheels tend to lock at a...
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4735461 |
Failsafing means for an anti-skid system
A failsafing device is proposed for an anti-skid system of a tractor-trailer combination. If the trailer anti-skid system fails at the rear axle, instead of shutting off the entire anti-skid system...
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4733919 |
Integrated pressure exhaust valve and fluid coupling
An integrated pressure exhaust valve and pneumatic coupling is used on a truck trailer for bringing air brake pressure from a tractor to the truck trailer. A gladhand coupling moiety is used for...
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4725101 |
Proportioning control valve
A proportioning control valve for a fluid pressure braking system for a tractor-trailer combination vehicle permits unproportioned communication of control pressure when the tractor is pulling a...
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4721344 |
Electric brake controller
An electric brake control circuit is responsive to an activation signal and a vehicle deceleration signal for generating a brake control signal representing a predetermined amount of braking. A...
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4714297 |
Fluid pressure brake control portion
A fluid pressure control portion for a fluid brake motor is inserted in a fluid pressure control passage between a triple valve and a brake motor for a particular car truck. This portion comprises...
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4697853 |
Pressure-medium braking system for vehicles
A multiple-circuit pressure-medium braking system for vehicle and trailer combinations that increases safety by allowing the front-wheel brake, the rear-wheel brake and the trailer brake to respond...
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4697852 |
Spring-loaded parking brake and service-brake system for trailers
A spring-loaded parking-brake and service-brake system for trailers of motor-vehicle combinations is provided which increases safety. The system does this by allowing the service brake of the...
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4671578 |
Fluid pressure responsive brake for the trailer of a vehicle
A fluid pressure responsive brake system for the trailer of a vehicle. The brake system includes a trailer supply circuit, which can be connected with the supply circuit of the tractor and which...
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4660894 |
Proportioning brake valve with dual area secondary piston
A dual circuit brake valve includes a relay piston (50) having primary (82) and secondary (84) areas which are normally communicated to the pressure level at the primary outlet or delivery port...
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4645270 |
Vehicle brake system and valve
A vehicle brake system for an arrangement having a prime mover and at least one tandem trailer. The system includes a respective sub-system for the prime mover and each tandem trailer and each...
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4635758 |
Hydraulic control system for simultaneous application of brakes of towing and towed vehicles with equal intensity
Hydraulic brake system between two vehicles provides for simultaneously braking both vehicles with equal intensity. An auxiliary master cylinder in the towing vehicle controls, through fluid...
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4632466 |
Dual-circuit pressure medium brake system
A dual-circuit pressure medium brake system is equipped with relay valves disposed ahead of the brake cylinders. Each brake circuit is equipped with a control also acting in the other circuit and...
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4629256 |
Fluid pressure braking system
A fluid pressure braking system for a tractor-trailer vehicle in which the braking system of the tractor is connected to the braking system of the trailer through trailer control and trailer supply...
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4616881 |
Tractor-trailer brake system including a trailer brake control valve
A tractor-trailer braking system with a control valve for the trailer which is controllable by at least two service brake circuits of the tractor. One circuit of this multi-circuit control has an...
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4602703 |
Disc brake system
An improved disc brake system of the general type including a brake frame having a pair of spaced apart rails, a pair of brake linings slidably carried on the brake frame rails, a circular rotor...
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4593954 |
Air brake valve system
An air brake control system for use in truck trailers having at each axle compressed-air brakes including spring brakes and service brakes, and each trailer being coupled to receive compressed air...
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4586584 |
Truck brake control system
An air brake system for a truck in which various control valves controlling air supply to air sub-systems, parking and trailer brakes, and various brake system condition signal generators are...
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4585278 |
Brake system for vehicle combinations
A brake system for combinations of vehicles in which a truck tractor and/or trailer (semi-trailer) is or are equipped with a supplementary electrical brake system. By the particular embodiment of...
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4583788 |
Tractor-trailer brake system
A fluid power circuit providing a selective operation of a trailer brake system, coupleable with a tractor brake system, comprises a pilot operated valve located between tractor and trailer brake...
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4571007 |
Proportioning relay valve
A proportioning relay valve (10) includes a housing (12) receiving a relay piston (28) which controls communication between supply (14), exhaust (18) and delivery or outlet (16) ports. Control...
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4568129 |
Brake system for vehicles with trailers
A brake system for vehicles with trailers and having a compressed-air, dual-line brake system, in which a pressure sensor is associated with the trailer brake valve, with which sensor an electronic...
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4556259 |
Air brake system
A compressed air brake system including a low pressure control circuit and a high pressure operating circuit. The control circuit is interfaced by a plurality of relay valves with the operating...
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4553788 |
Automatic air brake control
The force applied to brake a towed vehicle (18) is varied in response to the load of the vehicle (18). A signal generating device (38) generates a first signal when the load weighs more than a...
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4553789 |
Dual brake valve with brake proportioning
A dual circuit brake valve for an articulated vehicle is responsive to a pressure signal provided by the system tractor protection valve to provide a full brake application in both the primary and...
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4552398 |
Tractor-trailor brake acceleration system
A brake activation system for reducing the time between the brake application of tractors and trailers utilizes a speed differential between the electrical and air signals. The application of the...
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4547967 |
Vehicle hydraulic braking system
A pair of tandem master cylinders have primary pressure spaces connected to the brakes on one pair of wheels on opposite sides of the vehicle, and an actuator for the brakes on a trailer is...
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4505519 |
Braking system for automobile vehicle formed by a tractor and a trailer
According to the invention, the braking system includes two tandem master cylinders (100, 200), the first (100) having a first pressure chamber (110) connected to the left brake (132) of the...
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4478459 |
Trailer braking system
An improved trailer braking system for a tractor-trailer configuration is of the type which includes a primary air reservoir on the tractor which supplies an auxiliary air reservoir on the trailer....
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4455051 |
Ratio control valve for tractor rear axles
The invention relates to an improvement in a valve for a tractor air brake system for changing the pressure delivered to air brakes on a tractor rear axle during "bob tail" operation and...
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4455052 |
Tractor air brake system and control valve means therefor
A tractor air brake system including front wheel brake actuators, rear wheel brake actuators, and control valve structure for controlling the service air pressure delivered to the front wheel brake...
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4410218 |
Control valve for tractor rear axles
A valve for a tractor air brake system for changing the pressure delivered to air brakes on the rear axle depending on whether the trailor is attached or whether the tractor is operating in the...
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4402553 |
Pressure controlled electro-hydraulic brake system
A braking system for towed vehicles is disclosed which provides for controlled application of hydraulic brakes in a towed vehicle in response to the application of the brakes by the driver of the...
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4398771 |
Braking system for towed vehicles
A braking system for automatically braking a towed vehicle coupled to a towing vehicle having an electrical brake control circuit and a vacuum line wherein the towed vehicle is provided with a...
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RE31337 |
Vehicle brake system
A multi-axle vehicle brake system includes an air receiving portion, a valve portion, an air storage portion and a brake portion. The air receiving portion receives air from a supply source. The...
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4368926 |
Brake proportioning system
A fluid pressure braking system for an articulated vehicle having a towed unit and a towing unit includes a source of fluid pressure carried on the towing unit and a supply line (58) and a service...
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4348062 |
Tractor air brake proportioning system
A fluid pressure braking system for an articlated vehicle having a towed unit and a towing unit includes a source of fluid pressure carried on the towing unit and a supply line (68) and a service...
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4343517 |
Hydraulic braking systems for tractor-trailer combinations
A hydraulic braking system for agricultural tractor-trailer combinations, taking hydraulic power from a pump on the tractor. The system includes a pressure control valve movable by the main...
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4330157 |
Modular control valve
A braking system for a tractor-trailer combination vehicle having air brakes includes a two plunger control valve in which one of the plungers controls the brakes on the tractor and the other...
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4302057 |
Pneumatic control valve
The present invention is a pulse valve which imparts a force to a piston means for a limited duration of time or over a given distance. This pulse valve can be incorporated into a manual control...
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4261624 |
Brake system
A braking system for the tractor unit of a tractor trailer vehicle in which the ratio of the pressure applied to the front brakes to the pressure applied to the rear brakes changes automatically...
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4258959 |
Fluid pressure operable tractor and trailer vehicle braking systems
A tractor/trailer vehicle fluid pressure braking control system enabling two line control of trailer service and secondary braking includes for tractor braking a service brake control valve for...
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RE30550 |
Automatic trailer sway sensing and brake applying system
An apparatus for automatically sensing trailer sway and applying trailer brakes, thereby minimizing or eliminating the sway is provided. A hydraulic device, similar to a shock absorber with the...
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4254998 |
Trailer sway-control and braking system
Apparatus for inhibiting sway and for applying the brakes of a trailer includes a sway sensor connected to a frequency-discriminating circuit which senses lateral oscillatory motion of the trailer...
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4243271 |
Hydraulic braking system
A braking system for a towing vehicle having a trailer brake valve (24) and hydraulically operated brakes (12) and a trailer having hydraulically operated brakes (14). A novel pilot operated...
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