Integrated anti-lock braking and traction control system

Claim 2

An integrated anti-lock braking, ABS/traction control, TC, braking system for a vehicle having a fluid actuated brake for a wheel comprising: a system controller cognizant of the condition of said wheel for signaling said system to an ABS or TC mode; master cylinder means for delivering pressurized fluid to said wheel brake; an actuator frame with a bore being fluidly connected with said master cylinder means and said wheel brake; a first fluid line fluidly connecting said master cylinder means with said wheel brake; means for preventing fluid communication between said master cylinder means and said wheel brake through said first fluid line when said controller places said braking system in an ABS mode; means for preventing fluid communication between said first fluid line and said master cylinder means and for preventing fluid communication between said actuator bore and said master cylinder means when said controller places said braking system in a TC mode; a first piston slidably mounted in said bore with a valve opening portion; means to reversibly move said piston in response to said controller; and a valve piston slidably mounted within said bore sealably separating said bore connections with said master cylinder means and said wheel brake and said valve piston having a check valve preventing fluid communication from said master cylinder means to said wheel brake when said first piston is nonadjacent to said valve piston and said check valve allowing fluid communication between said master cylinder means and said wheel brake through said bore when said first piston valve opening portion contacts said check valve.

Claim 3

A braking system as described in claim 1 wherein said valve piston is spring biased in a direction towards said first piston.

Claim 4

A braking system as described in claim 1 wherein said first piston is operatively associated with a nut which threadably engaged with a drive screw.

Claim 5

A braking system as described in claim 1 wherein said first piston is operatively associated with a cam which provides a reversible means to move said piston.

Claim 6

A braking system as described in claim 1 further comprising first stop means for positioning said valve piston defining in an extreme position of said valve piston in a direction towards said first piston.

Claim 7

A braking system as described in claim 1 wherein said means for preventing fluid communication between said master cylinder means and said first fluid lines and said means for preventing fluid communication between said first fluid line and said master cylinder means and between said actuator bore and said master cylinder means includes a three-way solenoid operated valve.

Claim 8

A braking system as described in claim 1 wherein said first piston has a home position and in said home position said first piston valve opening portion opens said check valve.

Claim 9

A braking system as described in claim 1 wherein said first piston has a home position and said valve opening portion does not open said check valve.

Claim 10

An integrated anti-lock braking, ABS/traction control, TC, braking system for a vehicle having a fluid actuated brake for a wheel comprising: a system controller cognizant of the condition of said wheel for signaling said system to an ABS or TC mode; master cylinder means for delivering pressurized fluid to said wheel brake; an actuator frame with a bore being fluidly connected with said master cylinder means and said wheel brake, said actuator frame having first and second stop means; a first fluid line fluidly connecting said master cylinder means with said wheel brake; means for preventing fluid communication between said master cylinder means and said wheel brake through said first fluid line when said controller places said braking system in an ABS mode; means for preventing fluid communication between said first fluid line and said master cylinder means and for preventing fluid communication between said actuator bore and said master cylinder means when said controller places said braking system in a TC mode; a first piston slidably mounted in said bore with a valve opening portion; a second piston positioned by said second stop at an extreme position with respect to said bore, said first piston having an extreme position with respect to said second piston wherein movement of said first piston beyond said relative extreme position with respect to said second position causes said first and second pistons to move in unison; means to reversibly move said piston in response to said controller; and a valve piston positioned in an extreme position with respect to said bore by said first stop means slidably mounted within said bore sealably separating said bore connections with said master cylinder means and said wheel brake and said valve piston having a check valve preventing fluid communication from said master cylinder means to said wheel brake when said first piston is nonadjacent to said valve piston and said check valve allowing fluid communication between said master cylinder means and said wheel brake through said bore when said first piston valve opening portion contacts said check valve.

Claim 11

An integrated anti-lock braking, ABS/traction control, TC, braking system for a vehicle having a fluid actuated brake for a wheel comprising: a system controller cognizant of the condition of said wheel for signaling said system to an ABS or TC mode; master cylinder means for delivering pressurized fluid to said wheel brake; an actuator frame with a bore being fluidly connected with said master cylinder means and said wheel brake, said actuator frame having first and second stop means; a first fluid line fluidly connecting said master cylinder means with said wheel brake; means for preventing fluid communication between said master cylinder means and said wheel brake through said first fluid line when said controller places said braking system in an ABS mode; means for preventing fluid communication between said first fluid line and said master cylinder means and for preventing fluid communication between said actuator bore and said master cylinder means when said controller places said braking system in a TC mode; a first piston slidably mounted in said bore with a valve opening portion; a second piston positioned by said second stop at an extreme position with respect to said bore, said first piston having an extreme position with respect to said second piston wherein movement of said first piston beyond said relative extreme position with respect to said second position causes said first and second pistons to move in unison; means to reversibly move said piston in response to said controller; and a valve piston positioned in an extreme position with respect to said bore by said first stop means slidably mounted within said bore sealably separating said bore connections with said master cylinder means and said wheel brake and said valve piston having a check valve preventing fluid communication from said master cylinder means to said wheel brake when said first piston is nonadjacent to said valve piston and said check valve allowing fluid communication between said master cylinder means and said wheel brake through said bore when said first piston valve opening portion contacts said check valve.

Claim 14

An integrated anti-lock braking, ABS/traction, control, TC, braking system actuator for a vehicle having a master cylinder means and a fluid actuated brake for a wheel comprising: a frame with a bore having fluid connections for said master cylinder means and said wheel brake; a first piston slidably mounted in said bore with a valve opening portion; means to reversibly move said piston; and a valve piston slidably mounted within said bore sealably separating said bore connections with said master cylinder means and said wheel brake and said valve piston having a check valve preventing fluid communication from said connection of said master cylinder means to said connection of said wheel brake when said first piston is nonadjacent to said valve piston and said check valve allowing fluid communication between said connection of said master cylinder means and said connection of said wheel brake when said first piston valve opening portion contacts said check valve.

Claim 15

An integrated anti-lock braking, ABS/traction, control, TC, braking system actuator for a vehicle having a master cylinder means and a fluid actuated brake for a wheel comprising: a frame with a bore having fluid connections for said master cylinder means and said wheel brake; a first piston slidably mounted in said bore with a valve opening portion; means to reversibly move said piston; and a valve piston slidably mounted within said bore sealably separating said bore connections with said master cylinder means and said wheel brake and said valve piston having a check valve preventing fluid communication from said connection of said master cylinder means to said connection of said wheel brake when said first piston is nonadjacent to said valve piston and said check valve allowing fluid communication between said connection of said master cylinder means and said connection of said wheel brake when said first piston valve opening portion contacts said check valve.

Claim 16

An integrated anti-lock braking, ABS/traction control, TC, braking system actuator for a vehicle having a master cylinder means and a fluid activated brake for a wheel comprising: an actuator frame with a bore with fluid connections for said master cylinder means and said wheel brake; a first piston slidably mounted within said bore with a valve opening portion; reversible means to move said first piston; a second annular piston sealably surrounding said first piston slidable with respect to said first piston and when said second piston at an extreme position with respect to said first piston said pistons move in unison, said second piston being sealably mounted within said bore; and a valve piston slidably mounted within said bore separating said bore connections with said master cylinder means and said wheel cylinder, said valve piston having a check valve preventing fluid communication from said master cylinder means to said wheel when said first piston is adjacent to said valve piston and said check valve allowing fluid communication between said master and said wheel brake through said bore when said first piston valve opening portion contacts said check valve.

Claim 17

An integrated anti-lock braking, ABS/traction control, TC, braking system actuator for a vehicle having a master cylinder means and a fluid activated brake for a wheel comprising: an actuator frame with a bore with fluid connections for said master cylinder means and said wheel brake; a first piston slidably mounted within said bore with a valve opening portion; reversible means to move said first piston; a second annular piston sealably surrounding said first piston slidable with respect to said first piston and when said second piston at an extreme position with respect to said first piston said pistons move in unison, said second piston being sealably mounted within said bore; and a valve piston slidably mounted within said bore separating said bore connections with said master cylinder means and said wheel cylinder, said valve piston having a check valve preventing fluid communication from said master cylinder means to said wheel when said first piston is adjacent to said valve piston and said check valve allowing fluid communication between said master and said wheel brake through said bore when said first piston valve opening portion contacts said check valve.