Railways – Derailment guards – Guide rollers
Patent
1981-10-27
1984-08-28
Reese, Randolph
Railways
Derailment guards
Guide rollers
104242, 343882, B61F 900
Patent
active
044677260
ABSTRACT:
A stabilizing device for a satellite tracking communications aerial comprises a first element which depends from the frame of the aerial and a second element which carries at its lower end one or more rollers arranged to run along the downwardly facing surface of a rail. The first element carries a plate and the second element carries plates. A spring extends between the plates so that the rollers are biased into contact with the surface and any tendency of the aerial to rise is resisted by the action of the spring on the plate.
REFERENCES:
patent: 1250797 (1917-12-01), Cheneau
patent: 1612271 (1926-12-01), Edson
patent: 1764941 (1930-06-01), Edson
patent: 3292559 (1966-12-01), Cousins et al.
patent: 3357022 (1967-12-01), Giger
patent: 3729890 (1973-05-01), Yamamoto et al.
Aldous Derek R.
Melling Robert J.
British Telecommunications
Reese Randolph
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