B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/80
B60T 13/16 (2006.01) B60T 15/04 (2006.01)
Patent
CA 1054190
TOW VEHICLE - TRAILER BRAKING SYSTEM ABSTRACT OF THE DISCLOSURE A control valve for use in a tow vehicle-trailer braking system has a first bore connected to a master cylinder and a second bore with an entrance port connected to a pump in the tow vehicle for receiving a fluid under pressure, an exit port connected to a power steering control operated by the fluid under pressure, and a control port connected to a servomotor in the trailer. A first piston is located in the first bore and a second piston is located in the second bore. A lever which is located on a pivot pin connects the first piston with the second piston. When the operator applies a braking force to operate the master cylinder, the first piston receives a hydraulic force which acts on the lever to move the second piston and direct a portion of the pump fluid under pressure from the exit port to the control port to activate the servomotor brakes in the trailer.
260280
Fenzel Thomas B.
Kasselmann John T.
LandOfFree
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