Back to results
US 9,725,080 B1Granted
Parking brake system for locomotive
AssigneeNew York Air Brake Corporation
InventorsEric C. Wright, Howard E. Huber, Jr.
Life of this patent
Estimating the term…
Abstract
A locomotive brake system includes a brake cylinder with an integrated parking brake; a main reservoir; and a brake system controller for controlling the pressure in the brake cylinder. The brake system uses main reservoir pressure to pressurize the brake cylinder to achieve the parking brake output force using the brake cylinder.
Claims4
A locomotive parking brake system comprising:
- a brake cylinder having a pressurized side and a hollow rod moveable between a released position and an applied position;
- a source of main reservoir pressure;
- a locomotive brake system controller for providing a cylinder brake signal to the brake cylinder;
- a parking brake lock having a port and being coupled to the pressurized side of the brake cylinder to mechanically lock the brake cylinder in an applied position in the absence of any main reservoir pressure at the port;
- and
- a first valve that is moveable in response to a parking brake lock signal between a first position, where the source of main reservoir pressure is supplied directly to the port of the parking brake lock, and a second position, where the port of the parking brake lock is connected to exhaust.
3 more elements
Dependencies are inferred from the claim text.