Railway switches and signals – Signals – Roadway – visual – and portable
Reexamination Certificate
2006-04-25
2006-04-25
Le, Mark T. (Department: 3617)
Railway switches and signals
Signals
Roadway, visual, and portable
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
patent: 606197 (1898-06-01), Dunn
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
Battison Adrian D.
Dupuis Ryan W.
Le Mark T.
Williams Michael R.
LandOfFree
Railway indicator device and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Railway indicator device and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Railway indicator device and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3587620