California type platform

Details California type platform California type platform

1975-05-16

1976-11-09

Paperner, L. J.

Railways

Traveling track

105161, 238 10R, B61B 1300, B61D 1500

Patent

active

039903710

ABSTRACT:
A California type platform having an elongate frame which may be raised above the platform by wheels carried by the frame in position to be forced downwardly against the tunnel track by means of inflatable air bags.

REFERENCES:
patent: 763030 (1904-06-01), Thompson
patent: 2889685 (1959-06-01), Pickman
patent: 2907481 (1959-10-01), Russell
patent: 3138327 (1964-06-01), Jacobs
patent: 3365895 (1968-01-01), Jacobs
patent: 3626855 (1971-12-01), Fogelstrom
patent: 3678694 (1972-07-01), Haspert
patent: 3829116 (1974-08-01), Burdick

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