Two-speed transfer case

Details Two-speed transfer case Two-speed transfer case

2008-07-15

2008-07-15

Estremsky, Sherry (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural outputs

C475S204000

Reexamination Certificate

active

07399251

ABSTRACT:
A transfer case includes a two-speed range unit, a mode clutch, an actuation mechanism and a control system. The actuation mechanism includes an electric motor, an actuator shaft driven by the motor, a range actuator assembly and a mode actuator assembly. The range actuator assembly includes range, a cam driven by the actuator shaft and a shift fork having a follower retained in a groove formed in the cam and a fork engaging a shift collar associated with the range unit. The mode actuator assembly has a range cam member with cam surfaces and a control gear with rollers engaging the cam surfaces. The control gear is rotatively driven by the actuator shaft. The cam member is axially moveable for controlling engagement of the mode clutch. An anti-rotation mechanism limits rotation of the cam member in response to continued rotation of the control gear.

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