Evenson, McKeown, Edwards & Lenahan, P.L.L.C.
Viscous damper for hydraulic power transmission
 Described is a viscous damper for a hydraulic power transmission with a lockup clutch. The viscous damper is composed of at least one blade mounted on at least one element of the hydraulic power transmission so that said at least one blade is located in an oil filled in said hydraulic power transmission and controls occurrence of self-excited vibrations. Preferably, plural blades are mounted on a wall of at least one of mutually opposing two elements of the hydraulic transmission, said wall of said at least one element being locate opposite a wall of the other element. 
NSK-Warner K.K.
F F F
F16H F16H F16H
additional additional inventional
Masao Tatsuro Yasuto
Shoji Miyoshi Koike