Railway indicator device and method

Railway switches and signals – Signals – Roadway – visual – and portable

Reexamination Certificate

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Details

C246S47300R

Reexamination Certificate

active

07032865

ABSTRACT:
A railway indicator device is provided for indicating a condition associated with a particular section of track of a railway. The device includes a post supported in the ground adjacent the railway track which pivotally supports a swing arm thereon for movement between a raised position extending vertically above the post and a lowered position extending horizontally across the railway track spaced above the ground. An indicator panel, for example a blue flag indicator is supported on the free end of the swing arm for pivotal movement therewith relative to the post. The pivoting swing arm permits the indicator panel to be readily retracted or deployed by a single operator while minimizing opportunity for the indicator panel to be lost or damaged as commonly occurs with conventional designs of indicators used on railways.

REFERENCES:
patent: 418155 (1889-12-01), Berry
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patent: 822195 (1906-05-01), Eaton
patent: 1002260 (1911-09-01), Golden
patent: 1271740 (1918-07-01), McKinney
patent: 1297521 (1919-03-01), Van Dresar
patent: 2109286 (1938-02-01), Cubby
patent: 3806172 (1974-04-01), Maze
patent: 5097790 (1992-03-01), Massey
patent: 5887667 (1999-03-01), Van Zante et al.
patent: 5905216 (1999-05-01), Davis
patent: 6386492 (2002-05-01), Brown et al.
patent: 2265253 (1926-10-01), None
patent: 2011942 (1990-09-01), None

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