192 clutches and power-stop control – Vortex-flow drive and clutch – Including drive-lockup clutch
Patent
1996-04-17
1998-08-04
Lorence, Richard M.
192 clutches and power-stop control
Vortex-flow drive and clutch
Including drive-lockup clutch
192107M, 148565, 148639, 21912116, 21912117, F16H 4502, C21D 106
Patent
active
057880344
ABSTRACT:
A lockup clutch for torque converter which prevents engaging and disengaging shock when a transmission torque suddenly changes, includes a lockup clutch assembly, a lockup clutch piston operating the lockup clutch assembly, and a damper device disposed between the lockup clutch piston and an output member for absorbing changes of transmission torque occurring in association with the operation of the lockup clutch assembly. The lockup clutch piston is made of steel and has a thermally treated portion placed at a surface in contact with springs of the damper device wherein the thermally treated portion is hardened by rapid local melting with high density energy radiation such as electron beam followed by rapid cooling.
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patent: 4486240 (1984-12-01), Sciaky
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patent: 5209330 (1993-05-01), MacDonald
Imakire Masayoshi
Kato Hideji
Maruki Michio
Momiyama Naohisa
Ohbayashi Kouji
Aisin Aw Co. Ltd.
Lorence Richard M.
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