Patent ID: 8322246

Claim:
A gear shift mechanism of a gear shift transmission having a plurality of gears, said gear shift mechanism comprising: a first movable gear shift fork and at least one second movable gear shift fork adapted to engage gears of the gear shift transmission and adapted to assume a neutral position as well as an engaged position where a gear allocated to a respective one of the first and second gear shift forks is engaged, a locking mechanism preventing unintended simultaneous engagement positions of the first and second gear shift forks, the locking mechanism comprising at least one movable locking element assuming a locking position when the second gear shift fork is in an engaging position engaging a gear, wherein in said locking position of the locking element, a contact face of the locking element and a locking face of the first gear shift fork engage each other and therefore hold the first gear shift fork in a neutral position, wherein the contact face of the locking element and the locking face of the first gear shift fork are designed such that in a locking position a force for moving the first gear shift fork out of its neutral position does not generate a resulting component of force that would force the locking element against the second gear shift fork; and the first locking element assumes a locking position determined by the first gear shift fork if the first gear shift fork engages another gear, wherein in this locking position a further contact face of the locking element and a locking face of the second gear shift fork engage each other, wherein the further contact face of the locking element and the locking face of the second gear shift fork are designed such that a force applied for moving the second gear shift fork out of its neutral position does not comprise any resulting components of force that force the first locking element against the first gear shift fork.