Communications: electrical – Traffic control indicator – Portable
Reexamination Certificate
2008-06-17
2008-06-17
Trieu, Van T. (Department: 2612)
Communications: electrical
Traffic control indicator
Portable
C340S908100, C040S586000
Reexamination Certificate
active
07388515
ABSTRACT:
After-market, detachable warning lights for a reversible highway sign are easily attachable to existing stop/slow highway signs currently in use in highway construction areas. Left and right light boxes are attached to opposite vertical edges of the sign with a pair of red lights on the “stop” side of the sign and a pair of yellow lights on the “slow” side of the sign. A multi-functional switch enables the workman to create a variety of lighting conditions. These conditions could include red and yellow constantly ON; red and yellow blinking; red and yellow strobing slowly; and red and yellow strobing rapidly. In addition, the switch enables the workman to put either set of lights in a particular independent mode thus increasing the variation of the lighting system. For example, the red lights may utilize a constant ON mode while the yellow lights could be slowly strobing. The sign and pole have internal wiring and are supported by a lower base with wheels. The twelve-volt battery supply rides on the base. The sign is readily moved from site to site and allows the workman to select many different combinations of lighting effects.
REFERENCES:
patent: 5422638 (1995-06-01), Singer et al.
patent: 5598654 (1997-02-01), Cowgill et al.
patent: 5755051 (1998-05-01), Zumbuhl
patent: 6104313 (2000-08-01), Boyd, II
patent: 7075427 (2006-07-01), Pace et al.
Trieu Van T.
Weber Don W.
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