Patent ID: 7780245

Claim:
A service brake/traction control valve, comprising: a service brake control port; a traction control port; an exhaust port; a control chamber fluidly communicating with the service brake control port and the traction control port as a function of a service brake event and as a function of a traction control event, the control chamber fluidly communicating with the exhaust port when the service brake event is released and the control chamber fluidly communicating with the exhaust port when the traction control event is released; a diaphragm between the service brake control port and both the exhaust port and the control chamber; and a traction piston selectively sealing the diaphragm for preventing fluid communication between the control chamber and the exhaust port during the traction control event, the diaphragm also preventing fluid communication between the control chamber and the service brake control port during the traction control event.