[특허]Selectable grade and uniform net shoe force braking for railway freight vehicle

Selectable grade and uniform net shoe force braking for railway freight vehicle 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60T-013/00
출원번호	US-0630075 (1996-04-15)
발명자 / 주소	Hart James E.
출원인 / 주소	Westinghouse Air Brake Company
대리인 / 주소	Ingersoll
인용정보	피인용 횟수 : 74 인용 특허 : 0

초록 ▼

A railway freight brake method and apparatus for operating vehicles in a freight train having a locomotive and a number of railway freight vehicles wherein the individual railway freight vehicles can be controlled in a grade descending mode. When desired, such as when the locomotive transmits a grade mode signal to the individual vehicles, the individual vehicles can brake to produce a generally uniform net shoe force on the wheels of the vehicles. The generally uniform net shoe force can be limited on each vehicle to a value or ratio, such as a percentage of net braking ratio of the given vehicle. On-board calculations can be done in a microprocessor to calculate the vehicle brake cylinder pressure corresponding to the desired net shoe force. This calculation can be done using car parameters stored on-board the vehicle.

대표청구항 ▼

[ I claim:] [1.] Railway freight brake apparatus for operation on-board of rail vehicles in a train, such vehicles having a mechanical brake with friction brake shoes actuated by a pneumatic brake cylinder, and having a reservoir as a storage source of pressurized fluid, such apparatus comprising:(a) brake signal receiver on-board such vehicle to receive a brake signal indicative of a desired braking level of such train;(b) grade signal receiver on-board such vehicle to receive a grade signal indicative of operation in a grade mode on a descending grade;(c) at least one valve to control the pressurization of such brake cylinder from such reservoir and the depressurization of such brake cylinder;(d) processor to control said valve to supply such brake cylinder with pneumatic fluid from such reservoir and to exhaust such fluid to apply and release such mechanical brake in response to said brake signal; and(e) said processor controlling said valve to supply such brake cylinder with pneumatic fluid from such reservoir in response to said grade signal so as to produce generally equal net shoe forces on such brake shoes among such vehicles.

이 특허를 인용한 특허 (74)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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연합인증

Selectable grade and uniform net shoe force braking for railway freight vehicle 원문보기

초록 ▼

대표청구항 ▼

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Selectable grade and uniform net shoe force braking for railway freight vehicle 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (74)

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