Railway rolling stock – Trucks – Bogie
Patent
1994-04-06
1995-09-26
Oberleitner, Robert J.
Railway rolling stock
Trucks
Bogie
267196, B61F 550
Patent
active
054526655
ABSTRACT:
A railway vehicle truck bolster friction shoe pocket includes a sloped rear wall and longitudinally spaced sidewalls depending from the rear wall to form a friction shoe pocket having open top and bottom ends for receiving a variable rate type of friction shoe. During rotation and translation of the bolster with respect to the truck sideframe, the outboard friction shoe pocket sidewall is repeatedly impacted by the outer and upper corner of the friction shoe. The impacting causes protuberances to form in the outboard sidewall, but only on the upper portion of the wall. The same sidewall is provided with a relieved section across the entire sidewall upper portion in order to eliminate the impact contact area between the upper portion of the friction shoe and the upper portion of the outboard sidewall. Eliminating the contact area eliminates the formation of protuberances and extends the life of the bolster.
REFERENCES:
patent: 2378415 (1945-06-01), Light
patent: 4103623 (1978-08-01), Radwill
patent: 4244298 (1981-01-01), Hawthorne et al.
patent: 4276833 (1981-07-01), Bullock
patent: 4637319 (1987-01-01), Moehling et al.
patent: 5331902 (1994-07-01), Hawthorne et al.
Schultz Thomas R.
Wronkiewicz Robert D.
Amsted Industries Incorporated
Brosius Edward J.
Gregorczyk F. S.
Morano S. Joseph
Oberleitner Robert J.
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