Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Reexamination Certificate
2007-12-03
2011-11-15
Johnson, Vicky (Department: 3656)
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
Reexamination Certificate
active
08056433
ABSTRACT:
A shifting device for a multi-gear manual transmission, in particular a gearwheel variable-speed transmission of a vehicle, with a gearshift shaft that can be axially and rotationally moved. A shift gate can be selected by axial movement of the shaft and a gear in the shift gate is engaged by rotation movement of the shaft. A locking device communicates with the gearshift shaft and increases a selection force when selecting a shift gate having a reverse gear. A spring arrangement includes a first spring element, which acts during the selection of a shift gate with two forward gears, and the second spring element acts, together with the locking device, during the selection of the shift gate with the reverse gear.
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Davis & Bujold P.L.L.C.
Johnson Vicky
ZF Friedrichshafen AG
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