Fluid-pressure and analogous brake systems – Automatic – Train rear end first
Patent
1993-10-04
1995-10-24
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Automatic
Train rear end first
303 962, 303 69, 303DIG3, 200600, B60T 1546
Patent
active
054604354
ABSTRACT:
A system is disclosed to selectively initiate braking at a rear section of a railway train upon initiation of a selected front braking condition at the front section of the railway vehicle. The system utilizes an air sensor preferably constructed in the form of an insect excluder device to detect release of brake pipe air from an exhaust port upon initiation of braking at the front section of the vehicle. An appropriate signal is produced by the air sensor, thus permitting detector circuitry to detect that front braking has been initiated. A transmitter, typically located in the cab of the locomotive, is electrically connected to the detector circuitry. When the detector circuitry indicates that the selected front braking condition has been initiated, the transmitter transmits a brake initiation signal to a receiver located at the rear of the vehicle. The receiver then actuates pneumatic braking equipment at the rear to initiate rear braking. The air sensor may include a generally rigid insect shield connected to actuate the armature of an electrical switch upon passage of air. Such an air sensor may also be constructed utilizing a deformable insect shield configured to operate as a variable capacitor when air passes through the exhaust port. If connected in a resonant circuit, this variable capacitor may provide a detectable voltage variation which can be used to indicate initiation of front braking.
REFERENCES:
patent: 1707273 (1929-04-01), McCune
patent: 2061916 (1936-11-01), Miller
patent: 2258783 (1941-10-01), McNeal
patent: 3374035 (1968-03-01), Howard
patent: 3539226 (1970-11-01), Barber
patent: 3710209 (1973-01-01), Webb et al.
patent: 3901562 (1975-08-01), Powell et al.
patent: 4043605 (1977-08-01), Hart
patent: 4113319 (1978-09-01), Zoric
patent: 4361825 (1982-11-01), Shockley
patent: 4415781 (1983-11-01), Frame et al.
patent: 4641892 (1987-02-01), Schmid
patent: 4852443 (1989-08-01), Duncan et al.
patent: 4920343 (1990-04-01), Schwartz
patent: 5090780 (1992-02-01), Powell
WABCO "26-L" Locomotive Air-Brake Equipment and Devices, Westinghouse Air Brake Division, American Standard Inc. Jan. 1988.
Oberleitner Robert J.
Poon Peter M.
Union Switch & Signal Inc.
LandOfFree
System for initiating rear braking in a railway train and air se does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for initiating rear braking in a railway train and air se, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for initiating rear braking in a railway train and air se will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1882372