Fluid parking brake for a rail vehicle air brake cylinder
AssigneeNew York Air Brake Corporation
InventorsJeffrey F. Sauter, Gayle J. Thelen
Life of this patent
Estimating the term…
Abstract
A fluid parking brake for a rail vehicle having a brake cylinder with a first piston responsive to fluid signals to apply and release the brakes on the vehicle. The parking brake includes a housing having a second piston in the housing and which is coupled to the first piston. An apply port in the housing receives a pressure signal to move the second piston to an apply position. A detent is provided for provided for holding the second piston in the applied position.
Claims27
A parking brake for a rail vehicle having a brake cylinder with a first piston in the brake cylinder responsive to fluid signals to apply and release brakes on the vehicle, the parking brake comprises:
- a housing;
- a second piston in the housing and coupled to the first piston;
- an apply port in the housing for receiving a pressure signal to move the second piston to an apply position;
- a detent for holding the second piston in the applied position;
- and
- a release port in the housing for receiving a pressure signal to release the detent and allow the second piston to move to a release position.
A parking brake for a rail vehicle having a brake cylinder with a first piston in the brake cylinder responsive to fluid signals at a brake port to apply and release brakes on the vehicle, the parking brake comprises:
- a housing;
- a second piston in the housing and coupled to the first piston;
- an apply port in the housing for receiving a pressure signal to move the second piston to an applied position;
- and
- a detent in the housing and responsive to the removal of pressure at the apply port to hold the second piston in the applied position, and release of the detent allowing the second piston to move to a release position.
A parking brake for a rail vehicle having a brake cylinder with a first piston in the brake cylinder responsive to fluid signals at a brake port to apply and release brakes on the vehicle, the parking brake comprises:
- a housing;
- a second piston in the housing;
- a lost motion device connecting the second piston to the first piston;
- an apply port in the housing for receiving a pressure signal to move the second piston to an applied position;
- and
- a detent in the housing for holding the second piston in the applied position.
A method for retrofitting a cable operated parking brake of a rail brake cylinder with a fluid operated parking brake;
- the brake cylinder having a first housing, a first piston in the first housing, openings in the first housing and the first piston for receiving parking brake cable to be connected to the first piston;
- the fluid parking brake having a piston in a second housing responsive to an applied fluid signal to move to an applied position and a detent in the second housing for holding the second piston in the applied position, the method comprising:
- connecting the second piston to the first piston via the openings in the first housing and first piston for receiving the parking brake cable;
- and
- connecting the second housing to the first housing.
Dependencies are inferred from the claim text.