Patent ID: 11938915
Assignee: VOLVO TRUCK CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 13:
14. A braking arrangement for a vehicle, comprising:
a source of compressed air;
a drive axle for the vehicle;
a brake associated with the drive axle and connected to the source of compressed air by an air line;
an operator controlled valve in the air line between the source of compressed air and the brake;
a proportioning valve in the air line between the operator controlled valve and the brake:
a compressor driven by the drive axle and having an outlet connected to a control port of the proportioning valve;
a second drive axle for the vehicle;
a second brake associated with the second drive axle and connected to the source of compressed air by the air line;
a second compressor driven by the second drive axle and having an outlet connected to the control port of the proportioning valve; and
a double check valve having inlets connected to the outlet of the compressor and to the outlet of the second compressor and an outlet connected to the proportioning valve.