Device for signalling status of machines or processes

Details Device for signalling status of machines or processes Device for signalling status of machines or processes

1990-10-10

1992-04-07

Ng, Jin F.

Communications: electrical

Condition responsive indicating system

Specified indicator structure

340679, 340525, 34081523, G08B 300

Patent

active

051032155

ABSTRACT:
A signalling device is provided having a plurality of differently colored light modules stacked one above the other than function properly regardless of arrangement order of the light modules within the signalling device. The signalling device includes a signal bus having a plurality of channels that extends through each light module. Each channel carries a unique status signal to one light module. Each light module is connected to and identified by a different channel, thus enabling the light modules to be arranged in any order and still function properly. One or all cover plates on each light module may be removed without requiring any light module to be removed from the signalling device. This feature enables both the light modules to be serviced while retaining their color identity and the color of the cover plates to be changed without requiring any light modules to be removed from the signalling device in either situation. The signalling device is quickly assembled with dilating rivets. A data logger connected to each signalling device records the changing status as indicated by each light module. All these features enable the signalling device to be quickly and efficiently assembled and maintained.

REFERENCES:
patent: 3299264 (1967-01-01), Lipscomb
patent: 3555543 (1967-12-01), Lynch
patent: 3818439 (1974-06-01), Maine
patent: 3873885 (1975-03-01), Elfverson
patent: 3924255 (1975-12-01), Mori
patent: 4017831 (1977-04-01), Tieden
patent: 4364105 (1982-12-01), McNamara, Jr.
patent: 4399434 (1983-08-01), Bielat
patent: 4668935 (1987-05-01), McDermott
Telemechanique catalog.
The "Luminous Tower".
Sasaki Electric Manufacturing Company catalog.
The Asahi catalog.
The Werma catalog.

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