Drain valve

PCT No. PCT/GB97/01715 Sec. 371 Date Aug. 18, 1999 Sec. 102(e) Date Aug. 18, 1999 PCT Filed Jun. 24, 1997 PCT Pub. No. WO98/00324 PCT Pub. Date Jan. 8, 1998A drain valve of an air braking system for vehicles has a drainage piston, a main sump and auxiliary sump. Moisture passes from the main sump to...

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Bibliographische Detailangaben
Hauptverfasser:	THOMAS, BARRY DAVID, FIRTH, BRIAN FRANK
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BLASTING BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES SEPARATION STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROMENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PCT No. PCT/GB97/01715 Sec. 371 Date Aug. 18, 1999 Sec. 102(e) Date Aug. 18, 1999 PCT Filed Jun. 24, 1997 PCT Pub. No. WO98/00324 PCT Pub. Date Jan. 8, 1998A drain valve of an air braking system for vehicles has a drainage piston, a main sump and auxiliary sump. Moisture passes from the main sump to the auxiliary sump in response to pressure at a signal port which closes off air supply through ports. A reduction in pressure at the signal port causes the ports to be reconnected and allows moisture to be expelled through the drainage outlet.