Communications: electrical – Traffic control indicator – Portable
Patent
1991-06-18
1993-10-12
Crosland, Donnie L.
Communications: electrical
Traffic control indicator
Portable
3409081, 340907, 340926, 34082569, 34030915, G08G 1095
Patent
active
052529690
ABSTRACT:
A temporary signal system wherein a pair of signal stands are installed at spaced locations adjacent a traffic restriction area. Each stand has at least red and green lights which light or flash for predetermined time periods to control vehicle traffic passing the restriction area. The signal stands include timers for counting actual time and providing the actual time, controllers for producing a flashing control signal for a selected red or green light upon reception of a time signal provided by the timer when the controller is in a flashing operation condition, and a lighting driver for permitting the selected red or green light to flash upon reception of the flashing control signal from the controller. The stands have an operation starting arrangement for initiating operation of the controllers of both of the stands at the same time, or a signal transmission arrangement for transmitting the operating condition data between the stands so that the lights of both stands are operated in a controlled and synchronized relationship with each other.
REFERENCES:
patent: 2829362 (1958-04-01), Terrill
patent: 3046521 (1962-07-01), Cantwell et al.
patent: 4032883 (1977-06-01), Gibson
patent: 4857921 (1989-08-01), McBride et al.
patent: 4916621 (1990-04-01), Bean et al.
Crosland Donnie L.
Japanic Corporation
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