ANTI-SKID CONTROL MEANS FOR AIR PRESSURE BRAKING SYSTEMS

The invention relates to fluid pressure braking systems for vehicles in which air pressure is used to produce the brake-applying force in brake operating member, and the brake-applying force is reduced in response to the operation of a skid-sensing means to relieve the braking so long as the tendenc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	PACKER M,GB, PARSONS D,GB
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to fluid pressure braking systems for vehicles in which air pressure is used to produce the brake-applying force in brake operating member, and the brake-applying force is reduced in response to the operation of a skid-sensing means to relieve the braking so long as the tendency to skid exists. The invention provides a valve mechanism for insertion in such a system which controls the connection of the brake operating member to the pressure source through a driver's control valve and to exhaust, the valve mechanism including a first valve which connects the brake operating member selectively to the pressure source or to exhaust, a second valve, on the side of the first valve to which the pressure source is connected, which provides a degree of restriction of air flow to the brake operating member decreasing with increase of pressure on the downstream side of the first valve, and a pilot valve operated by the skid sensing member to control the first valve.