This is the most common type of train brake. It was used on both the South Australian and Commonwealth Railways.
The system that operates the brakes on a bus. The minimum pressure is usually 90 pounds per square inch (psi).
A brake in which the mechanism is actuated by manipulation of air pressure. The term often is used to describe brakes that employ air under pressure above atmospheric, in contrast to vacuum brakes, which employ pressure below atmospheric.
Air-operated braking systems are used on heavy vehicles. Compressed air, operating on large-diameter diaphragms, provides the large forces at the brake assembly that are needed
Standard train brake originating in the US using compressed air in which the control is actuated from a driver's brake valve. A fall in brake pipe air pressure causes a brake application on each vehicle whilst a restoration of pressure causes the brake to release. A triple valve on each vehicle monitors the pressure in the brake pipe. When pressure falls, the distributor allows air from an auxiliary reservoir on the vehicle to pass to the brake cylinders to apply the brake. When pressure rises, the triple valve releases the air from the brake cylinder and recharges the auxiliary reservoir for the next application, using air from the brake pipe as it recharges.
power braking system with compressed air as the operating medium.
They are usually installed in heavy-duty trucks, which use compressed air for their operation.
A braking system in which the brakes are applied by compressed air acting on a piston. These brakes are controlled by variation of the pressure in the train pipe actuating a 'triple valve' which causes compressed air from a local reservoir to enter the brake cylinders to apply the brakes or vents the cylinders to release them.
In 1869 George Westinghouse invented the air brake for railroad cars. It greatly increased the size of trains and the speed at which they could operate safely.
On railways and trams an air brake is a brake operated by compressed air. A safer air brake was patented by George Westinghouse on March 5, 1872. Westinghouse's invention revolutionized the railroad industry, making stopping reliable and thus permitting trains to travel at higher speeds.
In aeronautics air brakes are a type of flight control used on aircraft to reduce speed during landing.
George Westinghouse first developed air brakes for use in railway service. A safer air brake was patented by him on March 5, 1872. Originally constructed for use on trains, and still in common use as such, Westinghouse made many alterations to improve his invention, leading to various forms of the automatic brake, thus, its use was expanded to include road vehicles.
