BRAKE AUXILIARY PNEUMATIC SERVO Russian patent published in 1996 - IPC

FIELD: automotive industry; brake systems of vehicles. SUBSTANCE: servo has series-mounted control rod rigidly coupled with plunger by means of cam, reaction disk and pusher. Rod sets three-way two-seat valve in operation. Certain space is formed between reaction disk and plunger at rest. One of two seats of valve is formed by end of first bushing coaxial with plunger, with compressible preliminarily stressed means tending to move first bushing away from plunger in axial direction. Bushing thrusts axially against second bushing to make it rigidly coupled with control rod after adjustment of relative positions. EFFECT: enhanced reliability of braking system. 7 cl, 2 dwg