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1. (WO2013163309) NESTED ENDLOAD ASSEMBLY FOR A VARIATOR

Pub. No.:    WO/2013/163309    International Application No.:    PCT/US2013/038013
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Thu Apr 25 01:59:59 CEST 2013
IPC: F16H 37/06
Applicants: ALLISON TRANSMISSION, INC.
Inventors: SCHOOLCRAFT, Brian
Title: NESTED ENDLOAD ASSEMBLY FOR A VARIATOR
Abstract:
A transmission includes a toroidal variator including a nested endload assembly. The nested endload assembly has two chambers configured to develop a clamping force on components of the variator. The endload assembly includes a housing, a backing plate, a piston positioned adjacent the backing plate and cooperating with the backing plate to define a first chamber for receiving pressurized fluid to act on the piston. The endload assembly also includes a load plate and an input race that cooperate to define a second chamber. The input race of the variator is acted upon by the piston when the piston is acted upon by pressurized fluid in the first chamber. The input race is also acted upon by pressurized fluid in the second chamber.