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US 5,294,138 AGranted
Traffic control cart
OwnerNan S. Yanginventor
Life of this patent
Estimating the term…
Abstract
A traffic control cart includes a rolling wheel assembly, a base fixed on the rolling wheels, a column mounted on the base, an arm pivotally secured on one periphery wall of the column, a light device including at least a green light, a yellow light, and a red light being mounted on a top face of the column. The arm is allowed to reciprocate in a ninety-degree range from vertical position to horizontal position, in the meanwhile one color of the traffic lights is "on" thus controlling the traffic therearound.
Claims7
A traffic control cart comprising
- a light means (5) having at least a green, a yellow, and a red light formed thereon;
- a wheel assembly (11) including a pair of front rolling wheels (113) and a pair of rear rolling wheels (112);
- a casing-like base (20) having periphery walls extending downward being securely mounted on said wheel assembly (11);
- a column (3 and 4) having casing structure therein being firmly fixed on said base (20);
- a gear wheel means (62) transmitted by a motor-gear set being installed in said column (3 and 4) having a central shaft (620) extending from a center thereof penetrating through a periphery face of said column (3 and 4) and having one end protruding out of said column (3 and 4);
- a plurality of micro-switches being firmly fixed inside said column (3 and 4) for responding to the reciprocating of said gear wheel means (62) and actuating one of said lights;
- and
- an arm (60) connected to said protruding end of said central shaft (620) being transmitted by said central shaft (620) and reciprocating in a ninety-degree range.
5 more elements
A traffic control cart comprising
- a light means (5) having at least a green, a yellow, and a red light formed thereon;
- a wheel assembly (11) including a pair of front rolling wheels (113) and a pair of rear rolling wheels (112);
- a casing-like base (20) having periphery walls extending downward being securely mounted on said wheel assembly (11);
- a column (3 and 4) having casing structure therein being firmly fixed on said base (20);
- a gear wheel means (62) transmitted by a motor-gear set being installed in said column (3 and 4) having an eccentric shaft (625) extending therefrom penetrating through a periphery face of said column (3 and 4) and having one end protruding out of said column (3 and 4);
- a plurality of micro-switches being firmly fixed inside said column (3 and 4) for responding to the reciprocating of said gear wheel means (62) and actuating one of said lights;
- and
- an arm (60) connected to said protruding end of said eccentric shaft (625) being transmitted by said eccentric shaft (620) and reciprocating within a ninety-degree range.
5 more elements
Dependencies are inferred from the claim text.