Machine element or mechanism – Gearing – Interchangeably locked
Reexamination Certificate
2004-09-15
2008-09-02
Le, David D. (Department: 3681)
Machine element or mechanism
Gearing
Interchangeably locked
C074S337500, C074S473100, C074S473120, C074S473130, C074S473210
Reexamination Certificate
active
07418884
ABSTRACT:
A shifting device for shifting a transmission with a shifting shaft upon which a plurality of shifting forks are located in an axial, slidable manner for carry out desired shifting procedures. The shifting device includes a selection apparatus for choosing the shifting fork to be activated for carrying out the shifting procedure and a blocking mechanism, which prevents movement of each of the non-chosen shifting forks. The blocking mechanism is located on an additional shaft which extends parallel to the shifting shaft and supports elements of the selection apparatus. A first actuator axially displaces the shifting shaft, when carrying out of the shifting procedure, and another actuator causes the additional shaft to rotate for choosing a desired the shifting fork to carry out the shifting procedure and for preventing movement of non-chosen shifting forks.
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Davis & Bujold & Daniels, P.L.L.C.
Le David D.
ZF Friedrichshafen AG
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