Patent ID: 7244001

Claim:
An antislip regulation and an antilock braking system for a vehicle equipped with a braking system comprising at least one brake cylinder associated with one or more wheels, a source of fluid under pressure, a brake control adapted to be operated to effect braking by feeding said cylinders with fluid under pressure via at least one brake valve and at least one brake pipe, a function selector adapted to adopt an antislip mode position in which said selector connects a branch pipe to a fluid feed pipe and an antilock mode position in which said selector connects a branch pipe to a return line, a control valve for each of said at least one brake cylinders adapted to adopt a normal braking position in which said control valve connects the cylinder to the brake pipe and at least one special mode position in which said control valve connects the cylinder to a branch pipe connected either to the return line or to the fluid feed pipe, according to the position of the function selector, and means, for detecting wheelspin or a wheel tending to rock and for controlling in consequence thereof at least the control valve for the brake cylinder associated with that wheel, the control valve for the each of said at least one brake cylinder being a progressive valve such that, when the function selector is in the antislip made position thereof, operation of the control valve modulates a braking force to control wheelspin and, when the function selector is in the antilock mode position thereof, operation of the control valve modulates the releasing of the braking of a wheel.