Method of repairing a piston shaft assembly of a railway car end

Details Method of repairing a piston shaft assembly of a railway car end Method of repairing a piston shaft assembly of a railway car end

1983-10-13

1986-03-04

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Assembling or joining

29DIG35, 2940208, 2940206, 2940211, 291565R, 123193P, B23P 1102

Patent

active

045732507

ABSTRACT:
A method of fixing an annular piston onto a piston shaft includes providing an annular piston with a central bore having a diameter slighty less than the shaft diameter, heating the annular piston to expand the bore diameter and then placing the heated piston onto the shaft so that the piston, upon cooling, is permanently shrink-fit onto the shaft. In an end-of-car cushioning unit for a railway car, the prior shaft is cut adjacent the piston and the piston is rebored to a diameter slightly less than the diameter of the end portion of the piston onto which it is to be shrink-fitted.

REFERENCES:
patent: 2752668 (1956-07-01), Sheen
patent: 3724059 (1973-04-01), Celovsky
patent: 3725994 (1973-04-01), Wechsler
patent: 3990141 (1976-11-01), Stark
patent: 4044655 (1977-08-01), Kennicott
patent: 4121331 (1978-10-01), Fukuma et al.
patent: 4133094 (1979-01-01), Stafford
patent: 4211192 (1980-07-01), Baumgartner et al.
patent: 4376335 (1983-03-01), Furukawa et al.
patent: 4501192 (1985-02-01), Knodel

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