Patent ID: 8671791

Claim:
A device for reversing the direction of an automotive wheeled vehicle, positionable between a drive shaft and wheels of said vehicle, comprising: at least one input shaft connectable by a disengageable device for transmission of movement to the drive shaft of said vehicle to be driven in rotation in one and the same direction; a forward/reverse output shaft; a reversible mechanism comprising a clutch sleeve that is carried by one of said input and output shafts, the clutch sleeve comprising a forward clutch sleeve element, a reverse clutch sleeve element, and a movable clutch sleeve interposed between said forward and reverse clutch sleeve elements, said forward and reverse clutch sleeve elements being mounted to be permanently engaged with the other of said input and output shafts and mounted to be either of i) rotationally coupled with or ii) disengaged from the one of said input and output shafts by way of said movable clutch sleeve, the movable clutch sleeve being interdependent in rotation with the one of said input and output shafts at least below a predetermined torque, and is mounted to move axially on said one of said input and output shafts via a movement controller that occupies at least two positions including a forward position in which teeth of the movable clutch sleeve are engaged with teeth of of the forward clutch sleeve element, and a reverse position in which the teeth of the movable clutch sleeve are engaged with teeth of the reverse clutch sleeve element; and at least one blocking system that comprises at least one blocking element that is carried by the input shaft and that is drivable in rotation by said input shaft, said at least one blocking element mounted to move between at least two positions including an off position in which the movable clutch sleeve is permitted to operably switch between two or more operating positions, and an on position, in which said blocking element directly or indirectly prevents said movable clutch sleeve from operably switching between said two or more operating positions, wherein said at least one blocking element is sensitive to a speed of rotation of the input shaft and switches automatically from the off position to the on position when the input shaft is driven at a speed of rotation that exceeds a predetermined threshold value.