B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 15/18 (2006.01) B60T 8/36 (2006.01) B60T 13/66 (2006.01) B60T 15/02 (2006.01)
Patent
CA 2182462
A brake valve assembly suitable for use in a railway air brake system to control flow of air between the on-board reservoir and a respective brake cylinder. The valve assembly may include a plurality of internal valves to permit three states of fluid transfer, i.e., delivery, exhaust and lap. The internal valves are controlled by respective solenoids that act directly on the valve element. Internal forces due to fluid pressure are balanced using counterbalance assemblies preferably including a flexible, rolling diaphragm disposed adjacent to a configured follower member. The counterbalance assemblies maintain substantial balance throughout the reciprocative stroke of the valve element.
Assemblage de soupape pour système de frein pneumatique de voiture de chemin de fer servant à régler le débit d'air entre le réservoir de bord et le cylindre de frein correspondant. L'assemblage peut comporter des soupapes internes permettant trois types de transfert de fluide : débit, évacuation et recouvrement. Les soupapes internes sont commandées chacune par un solénoïde agissant directement sur l'élément de soupape. L'équilibre des forces internes dues à la pression du fluide est assuré par des dispositifs, de préférence une membrane souple à enroulement placée près d'un suiveur configuré. Les dispositifs d'équilibrage assurent un bon équilibre pendant la course alternative de l'élément de la soupape.
Brillant Daniel
Griffin Scott N.
Kurtz Ronald C.
Macrae & Co.
Westinghouse Air Brake Company
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