Flagging apparatus and method

Details Flagging apparatus and method Flagging apparatus and method

1992-11-06

1994-04-26

Huppert, Michael S.

Railway switches and signals

Signals

Roadway, visual, and portable

116281, 116175, 116283, 34082569, 3403092, B61L 512

Patent

active

053059751

ABSTRACT:
An apparatus for representing the state of a condition, the condition having a true state and a false state, the apparatus comprising an indicator having a recognizable feature indicative of the true state of the condition, a cover for covering the indicator and a support for removably supporting the indicator and cover on a surface. The apparatus includes a device for moving the indicator and the cover relative to each other such that the true state of the condition is represented by the indicator being uncovered and the false state of the condition is represented by the indicator being covered.

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