B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 17/08 (2006.01)
Patent
CA 2579180
The invention relates to a combined service brake and spring brake cylinder (1) for the braking system of a motor vehicle, in particular for utility vehicles comprising service and spring brake pistons (4, 8) guided inside a casing (10) which is common for two brake cylinders (2, 6), wherein the spring brake piston (8) is loaded by at least one storage spring (28) and has an external diameter greater than that of the service brake piston (4). According to said invention, the spring brake piston (8) is embodied in the form of an annular piston and at least a part of the rod thereof is constructed in the form of a piston tube which surrounds the service brake piston (4) and forms an external radial running and sealing surface therefor.
Cylindre combiné (1) de frein principal et de frein à ressort pour des systèmes de freinage de véhicules à moteur, en particulier de véhicules utilitaires, pourvu d'un piston (4, 8) de frein principal et de frein à ressort guidé à l'intérieur d'un carter (10) commun aux deux cylindres (2, 6) de frein. Le piston (8) de frein à ressort est contraint par au moins un ressort accumulateur (28) et possède un diamètre externe plus grand que celui du piston (4) de frein principal. Selon la présente invention, le piston (8) de frein à ressort est un piston annulaire et au moins une partie de sa tige conçue sous forme de tube (24) entoure le piston (4) de frein principal et forme pour lui une surface radiale externe de glissement et d'étanchéité.
Fantazi Alain
Maille Thierry
Savagner Nicolas
Fetherstonhaugh & Co.
Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh
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