Railways – Trolley rails – Two tread
Patent
1987-07-29
1989-05-02
Kyle, Deborah L.
Railways
Trolley rails
Two tread
104 94, 238310, 212205, 376260, E01B 2522, G21C 1900
Patent
active
048257699
ABSTRACT:
An improved rail assembly and method of construction thereof is disclosed herein that is particularly adapted for use with a crane trolley in a hot cell environment which is exposed to airborne and liquidborne radioactive contaminants. The rail assembly is generally comprised of a support wall having an elongated, rail-housing recess having a floor, side wall and ceiling. The floor of the recess is defined at least in part by the load-bearing surface of a rail, and is substantially flat, level and crevice-free to facilitate the drainage of liquids out of the recess. The ceiling of the recess overhangs and thereby captures trolley wheels within the recess to prevent them from becoming dislodged from the recess during a seismic disturbance. Finally, the interior of the recess includes a power track having a slot for receiving a sliding electrical connector from the crane trolley. The power track is mounted in an upper corner of the recess with its connector-receiving groove oriented downwardly to facilitate the drainage of liquidborne contaminants and to discourage the collection of airborne contaminants within the track.
REFERENCES:
patent: 3086478 (1963-04-01), Schreyer
patent: 3580183 (1971-05-01), Nearman
patent: 3637096 (1972-12-01), Crate
patent: 4207821 (1980-06-01), Beckert
patent: 4593201 (1986-06-01), Gembus
patent: 4664873 (1987-05-01), Hendrich et al.
Kyle Deborah L.
The United States of America as represented by the United States
Wasil Daniel
LandOfFree
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