Two separate high speed and low speed disc brake units for railway vehicles
AssigneeNippon Air Brake Co., Ltd.
InventorYoshio Asano
Life of this patent
Estimating the term…
Abstract
A railroad car brake system, comprising, a pneumatic-to-hydraulic transducer connected to a brake control unit for developing braking pressure in response to a brake command request, and a plurality of disc brake units connected to the pneumatic-to-hydraulic brake pressure transducer and being characterized by the fact that the disc brake units are divided into high speed disc brake units and low speed disc brake units and a control valve is installed between the brake pressure transducer and the disc brake units so that the pressurized fluid may be supplied from the brake pressure transducer either to the high speed disc brake units, or to the low speed disc brake units.
Claims11
A railroad car brake arrangement comprising;
- a pneumatic-to-hydraulic brake pressure transducer hydraulically connected to a brake control unit for developing braking pressure in response to a particular brake command request, a plurality of disc brake unit connected to said brake transducer, and being characterized by the fact that said disc brake units are divided into high speed and low speed disc brake units, and a control valve connected between said brake pressure transducer and said disc brake units, said control valve includes a solenoid, said solenoid is energized by the presence of an electrical control signal when the speed of the railroad car is greater than a predetermined value so that pressurized fluid is supplied from said brake pressure transducer to said high speed disc brake unit, and said solenoid is de-energized by the absence of said electrical control signal when the speed of the railroad car is less than the predetermined value so that pressurized fluid is supplied from said brake pressure transducer to said low speed disc brake units.
Dependencies are inferred from the claim text.