Portable traffic control signal device

Details Portable traffic control signal device Portable traffic control signal device

1983-03-31

1986-10-07

Caldwell, Sr., John W.

Communications: electrical

Traffic control indicator

Portable

116 63P, 212182, 414680, G08G 1095

Patent

active

046162259

ABSTRACT:
A portable traffic control unit comprising a wheeled trailer having a main frame attachable to a towing vehicle. A telescoping, vertical mast carries a pivotally mounted boom assembly. A first traffic control signal is secured to the vertical mast and a second at the end of the horizontal boom. A winch assembly can be actuated to raise the vertical mast and upon the vertical mast reaching its full extension, causing the boom to pivot to a generally horizontal position. In the erected position, the device provides a street side signal and an over-the-road traffic control signal for safety and visibility.

REFERENCES:
patent: 2109286 (1938-02-01), Cubby
patent: 2941185 (1960-06-01), Mullikin
patent: 3995250 (1976-11-01), Ferree
patent: 4044902 (1977-08-01), Eitel
patent: 4394108 (1983-07-01), Cook
patent: 4419038 (1983-12-01), Pendergraft
patent: 4430638 (1984-02-01), Parker

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