Friction material for transmission

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United States of America Patent

PATENT NO 7473727
APP PUB NO 20060257647A1
SERIAL NO

10558932

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Abstract

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A friction material for a synchronizer ring comprises (A) a petroleum coke with an ash content of 0.1 mass % to 8 mass % or (B) a pitch coke with an ash content of 0.1 mass % to 8 mass %, more preferably (C) a calcined petroleum coke with an ash content of 0.1 mass % to 1 mass % or (D) a foundry coke with an ash content of 5 mass % to 8 mass %. The friction material is effectively used for a synchronizer ring requiring high coefficient of dynamic friction.

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Patent Owner(s)

Patent OwnerAddress
TANAKA SEIMITSU KOGYO CO LTD7-10 SHINJOHONMACHI 2-CHOME TOYAMA-SHI TOYAMA 930-0996

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukushima, Yoshihiro Toyama , JP 17 135
Matsui, Eishin Toyama , JP 1 2
Takagi, Yoshiaki Toyama , JP 45 620
Takata, Tomoya Toyama , JP 2 4

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