Indicator device for machine

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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Details

C340S679000, C340S691100, C340S815450

Reexamination Certificate

active

07551097

ABSTRACT:
An indicator device is used in a machine for indicating the operation status of the machine. The indicator device includes a body detachably mounted to the machine, a plurality of circuit boards, which are detachably electrically coupled together, mounted inside the body and each provided with a plurality of light emitting elements arranged in a line, and a controller electrically connected to the circuit boards for controlling on/off status of the light emitting elements subject to the operation status of the machine.

REFERENCES:
patent: 3944799 (1976-03-01), Brownell
patent: 4157231 (1979-06-01), Phillips
patent: 4379415 (1983-04-01), Klancnik et al.
patent: 4396976 (1983-08-01), Hyatt
patent: 4835468 (1989-05-01), Dumbser et al.
patent: 4998455 (1991-03-01), Jauch
patent: 6297742 (2001-10-01), Canada et al.
patent: 7119704 (2006-10-01), Grzan et al.
patent: 7310049 (2007-12-01), Bowman
patent: 2007/0152842 (2007-07-01), Fayfield

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