Protected traffic controller spikes

Details Protected traffic controller spikes Protected traffic controller spikes

1980-10-14

1982-04-20

Byers, Jr., Nile C.

Road structure, process, or apparatus

Traffic steering device or barrier

404 11, 49 49, 256 16, E01F 1300

Patent

active

043256511

ABSTRACT:
The inclined projecting spikes used by parking lots to discourage entrance through the exit are guarded for protection of pedestrians. The guards take the form of either shrouds over the spikes or movable members disposed near the point of the spikes and spring-biased so that the guards will not deflect under the weight of a pedestrian's foot, but will deflect under the weight of an automobile wheel to thereby expose the spikes and deter runaway entry into the exit of a parking lot.

REFERENCES:
patent: 1017529 (1912-02-01), Gabrielsen
patent: 1527107 (1925-02-01), Allen
patent: 2762145 (1956-09-01), Rupe
patent: 2918740 (1959-12-01), Smith
patent: 3325782 (1967-06-01), Der
patent: 3783558 (1974-01-01), Keator
patent: 4016679 (1977-04-01), Ellefson
patent: 4097170 (1978-06-01), Dickinson
patent: 4101235 (1978-07-01), Nelson
patent: 4158514 (1979-06-01), Dickinson

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