Fluid-pressure and analogous brake systems – Automatic – Synchronizing
Patent
1987-11-05
1988-11-08
Kashnikow, Andres
Fluid-pressure and analogous brake systems
Automatic
Synchronizing
303 41, 303 44, B60T 1530
Patent
active
047831243
ABSTRACT:
A freight brake control valve device having an improved quick service function achieved by providing an additional volume upstream of the quick service limiting valve with which the brake pipe fluid under pressure is equalized during the second stage of quick service to achieve an intensified secondary quick service reduction of brake pipe pressure. Further, a smooth and continuous local reduction of brake pipe pressure occurs without any time lag at the time of transition from preliminary to secondary stage quick service. In a first embodiment of the invention, an exhaust passage separate from the brake cylinder exhaust passage is provided to assure venting of this additional volume in the event the brake cylinder retainer valve is set up. In a second embodiment, the additional volume is vented via the brake cylinder exhaust passage.
REFERENCES:
patent: 2033461 (1936-03-01), Farmer
patent: 2055967 (1936-09-01), Campbell
"AB" Single Capacity Freight Car Air Brake Equipment with the ABD Control Valve, Sep. 1979.
"AB" Single Capacity Freight Car Air Brake Equipment with the ABDW Control Valve.
Gaughan Edward W.
Hill Theodore B.
American Standard Inc.
Falce G. J.
Graham Matthew C.
Kashnikow Andres
LandOfFree
Freight brake control valve device having improved quick service does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Freight brake control valve device having improved quick service, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Freight brake control valve device having improved quick service will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-461154