Abstract: An air actuated finger pull back chuck device having a locating portion and a clamping portion. Locator slides and locator cams are air actuated to position the workpiece. The workpiece is located to the device with locator slides and air actuated clamp arms operate clamp fingers to pull back and hold a workpiece to the chuck device for the operation. The locator cams have a single connector to the locator actuator plate and the locator cams can be quickly reversed for locating on an inside diameter or an outside diameter. Various fingers can be attached to the clamp arm to fit various workpiece sizes. The quick change over times for different sized and shaped workpieces are facilitated by the simplicity of the invention.

Abstract: An anti-lock (ABS) hydraulic braking system for vehicles comprises a first normally open solenoid-controlled valve (4) disposed in a line between a master cylinder (3) and a brake (1), a second normally closed solenoid-controlled valve (8) disposed between the brake and expander chamber (7), and a normally-open solenoid-controlled by-pass valve (5) located between the master cylinder and the brake and by-passing the first solenoid-controlled valve (4).

Abstract: A braking system for a vehicle having primary and secondary braking circuits includes a secondary braking circuit having a secondary source of braking pressure connectable to a braking actuator and including a three-port, two-position, inlet solenoid valve having two inlet ports and one outlet port. One of the inlet ports is connected to an outlet of an inlet solenoid valve of the primary braking circuit and to the inlet of an exhaust solenoid valve of the primary braking circuit. The other inlet is connected to a secondary source of braking pressure. The outlet port is connected to the braking actuator. The inlet solenoid valve is movable by an output signal from an electronic control unit.

Abstract: In an anti-lock braking system incorporating a solenoid-operated fluid flow control valve, the rate at which fluid can normally be dumped to release a brake is increased by the provision of a pilot valve. The pilot valve is adapted to open by a pressure drop across a diaphragm. The pressure drop is established when an exhaust valve opens upon energization of the solenoid in response to an anti-lock signal.