초록 ▼

A vehicle wheel anti-lock braking system (ABS) is provided including a master cylinder and a wheel brake. An ABS controller cognizant of the rotational condition of the wheel provide a signal when the wheel condition is within preset parameters. An isolation valve responsive to close upon an activat

A vehicle wheel anti-lock braking system (ABS) is provided including a master cylinder and a wheel brake. An ABS controller cognizant of the rotational condition of the wheel provide a signal when the wheel condition is within preset parameters. An isolation valve responsive to close upon an activation signal given by said controller prevents fluid communication between the master cylinder and the wheel brake. An actuator frame is also provided having a bore fluidly communicating with the wheel brake. A piston is mounted within the bore for providing a variable control volume in communication with said wheel brake for and modulating the pressure therein. A reversible motor reciprocally powers piston. The motor has a rotor with a connected disc. A friction surface is provided for engagement with the disc to lock the position of the piston. A plunger is also provided to urge said friction surface into engagement with said disc. An electromagnetic core, responsive to a signal by said controller, moves the plunger to a position allowing removal of engagement between said friction surface and said disc thereby allowing rotation of the motor and movement of the piston.

대표청구항 ▼

A vehicle wheel anti-lock braking system (ABS) comprising; master cylinder means for supplying pressurized fluid; a wheel brake receiving pressurized fluid from said master cylinder means and for restraining rotational movement of said wheel; an ABS controller cognizant of the rotational condition o

A vehicle wheel anti-lock braking system (ABS) comprising; master cylinder means for supplying pressurized fluid; a wheel brake receiving pressurized fluid from said master cylinder means and for restraining rotational movement of said wheel; an ABS controller cognizant of the rotational condition of said wheel and providing a signal when said wheel condition is within preset parameters; isolation valve means responsive to close upon an activation signal given by said controller to prevent fluid communication between said master cylinder means and said wheel brake; an actuator frame having a longitudinal bore with first means of fluid communication with said wheel brake; a piston slidably salably mounted within said longitudinal bore for providing a variable control volume in communication with said wheel brake and thereby modulating the pressure therein; means to reciprocally move said piston; a reversible motor torsionally connected with said means to reciprocally move said piston, said motor having a rotor with a connected disc; a friction surface for engagement with said disc to restrain rotation of said rotor to lock the position of said piston;