Synchronizer ring having wood ceramics layer of friction member

Details Synchronizer ring having wood ceramics layer of friction member Synchronizer ring having wood ceramics layer of friction member

1996-11-19

1998-12-22

Lorence, Richard M.

192 clutches and power-stop control

Elements

Engaging surfaces

192 5334, F16D 6902

Patent

active

058509003

ABSTRACT:
To provide a synchronizer ring having both the characteristic of quickly synchronizing two gears and the characteristic of no burning, a wood ceramics layer of a friction member 12 is formed on a tapered inner circumferential surface of a ring-like structure 11 of a synchronizer ring 10. Since the friction member 12 of the synchronizer ring 10 according to the present invention is formed of wood ceramics, the synchronizer ring 10 can attain porosity, wear resistance, heat resistance, and seizure resistance. Owing to the porosity of the wood ceramics, the formation of an oil film at a friction interface can be suppressed to thereby enlarge the coefficient of dynamic friction. Accordingly, two gears can be quickly synchronized with no seizure owing to the heat resistance and the seizure resistance.

REFERENCES:
patent: 4267912 (1981-05-01), Bauer et al.
patent: 4762216 (1988-08-01), Pusatcioglu et al.
patent: 5433774 (1995-07-01), Kapl et al.

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