Portable traffic control signal device
AssigneeMaterial Sales, Inc.
InventorJohn D. Woudenberg
Life of this patent
Estimating the term…
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.
Claims5
A portable traffic control signal apparatus comprising:
- (a) a trailer adapted for attachment to a towing vehicle;
- (b) a vertical telescopic mast assembly on said trailer, said vertical mast assembly carrying a first traffic signal assembly;
- (c) a telescopic boom assembly pivotally secured to said mast assembly and assuming a non-horizontal position in a non-use condition, said boom being movable to a horizontal position of use;
- (d) a second traffic signal assembly detachably secured to said boom assembly;
- (e) actuation means operatively connected to said boom and mast for simultaneously extending said mast and said boom and thereafter rotating said boom to a horizontal position;
- and
- (f) means for locking said boom in a horizontal position.
Dependencies are inferred from the claim text.