Railway switches and signals – Cab signal or train control – Train defect
Patent
1988-12-29
1990-06-26
Kashnikow, Andres
Railway switches and signals
Cab signal or train control
Train defect
73146, 324642, B61K 300, E01C 2300, G01R 2704
Patent
active
049365290
ABSTRACT:
Flanged steel wheels remain in service on rail cars, locomotives, and other heavy rail guided machinery unitl they no longer maintain minimum specified rim or flange profile dimensions. If the rim or flange profile of the wheel cannot be returned to minimum specifications by surface machining operations, the wheel is condemned as being defective and is removed from service and scrapped. It is desirable to use an automated inspection device to determine if a wheel is approaching this condemning limit of profile wear. The invention automatically detects profile defects upon passing the wheel between rail mounted antennae which form a resonator cavity and transmit microwave radiation. When influenced by a wheel possessing condemnable rim thickness, flange thickness, or flange height profiles, the antennae cause a D.C. voltage to propagate at a microwave detector inserted into an interconnected comparison bridge network. A controller monitors the detector and activates an alarm at a remote location when a voltage is detected. The alarm notifies operating personnel of a defective wheel and sequentially logs the date and time of the alarm occurrence, the axle and wheel position of the defective wheel, and the specific profile defect on the wheel.
REFERENCES:
patent: 2301251 (1942-11-01), Capen
patent: 2442491 (1948-06-01), Gieskieng et al.
patent: 3514703 (1970-05-01), Soga
patent: 3549986 (1970-12-01), Prine
patent: 3586971 (1971-06-01), Bosisio
patent: 3940765 (1976-02-01), Grafinger et al.
patent: 4076192 (1978-02-01), Hoge
patent: 4700127 (1987-10-01), Sasaki et al.
"Microwaves", by Dr. K. C. Gupta, Wiley International, 1979.
"Association of American Railroads Wheel and Axle Manual", 3/1984.
Kashnikow Andres
Newholm Timothy
Railbase Technologies, Incorporated
LandOfFree
Device for detecting defective wheels on rail cars does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for detecting defective wheels on rail cars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for detecting defective wheels on rail cars will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1120678