Patent ID: 7618101

Claim:
A brake system for automobile comprising: a semiautomatic transmission for changing a speed of a driving shaft and transmitting power from the driving shaft to an output shaft, the semiautomatic transmission comprising a plurality of driving gears fixed on the driving shaft connected to an engine, a plurality of speed change gears fixed on the output shaft and continuously meshing with the driving gears, and a gear shifting lever connected to the speed change gears, for selecting speed levels; a braking gear fixed on the output shaft and continuously meshing with the driving gear, for applying a braking force to the output shaft; a first braking member for engaging the braking gear to apply frictional resistance to the motion of the braking gear; an operator for operating the first braking member and a plurality of third braking members which selectively engage any one of the speed change gears; and a controller receiving a braking signal produced from a brake treadle and controlling the operator to release at least one of the plurality of third braking members from the engaged speed change gear and to engage the first braking member to the braking gear and to engage a four-wheel drive gear.