ANTILOCK SYSTEM ELECTROPNEUMATIC MODULATOR Russian patent published in 2005 - IPC

FIELD: transport engineering.

SUBSTANCE: invention can be used in antilock-antislip systems of trucks and other vehicle with pneumatic or pneumohydraulic drives of brakes. According to invention, on inner surface of branch pipes of electropneumatic modulator additional ring beads of semiround or trapezoidal section are made at both sides of valve seats. Width of said additional beads measured by generating line of inner surface of branch pipes does not exceed height of said ring beads with ribs. Ring clearance between outer surface of ring beads with ribs and additional beads does not exceed thickness of branch pipes in placed of location of seat. Moreover, through section of through holes is formed between ring beads and ribs and is limited by surface of central disk. Sizes of through section of each through hole, at least at one of square sections, do not exceed double thickness of branch pipes in place of location of seat.

EFFECT: improved reliability and reliability and efficiency of operation of modulator.

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