Patent ID: 11858482
Assignee: BENDIX COMMERCIAL VEHICLE SYSTEMS LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 4:
5. A commercial vehicle comprising:
at least one driven axle;
at least one service brake;
at least one propulsion engine;
a pair of wheels, wherein
a parking brake function of the vehicle is solved by a bistable locking means acting on both wheels, and
the bistable locking means comprises:
a first multi-speed gearbox having a first gear stage activated by a first actuator and coupled to a first wheel of the pair of wheels;
a second multi-speed gearbox having a second gear stage activated by a second actuator and coupled to a second wheel of the pair of wheels, wherein
the parking brake function is achieved at least in-part by concurrently activating the first gear stage and the second gear stage; and

an input shaft lock, when activated, to couple an input of the first multi-speed gearbox with an input of the second multi-speed gearbox;

a computing device configured to activate the bistable locking means when the commercial vehicle is at a standstill; and
an electronic brake control unit, wherein
when the vehicle is in motion, the computing device is configured to send a brake request via an electronic signal to the electronic brake control unit to activate the at least one service brake.