Vehicle access control device

Details Vehicle access control device Vehicle access control device

1984-02-09

1986-07-15

Leppink, James A.

Road structure, process, or apparatus

Traffic steering device or barrier

49 49, 49131, E01F 1300

Patent

active

046003355

ABSTRACT:
A device for stopping selected vehicles in which a hinged pressure plate or ramp is supported by a pivotally mounted barrier plate, which is pivotally linked to the pressure plate and supported by a retractable locking device allowing vehicles to pass over the device.
When a selected vehicle is to be stopped, the locking device is retracted, allowing the weight of the vehicle to depress the pressure plate, thus pivoting the barrier plate from its horizontal position to its barrier position, where it blocks vehicular movement.

REFERENCES:
patent: 1694128 (1928-12-01), Lockett
patent: 2356559 (1944-08-01), Banschbach
patent: 2883780 (1959-04-01), Goodman
patent: 3049062 (1962-08-01), Irwin
patent: 3324805 (1967-06-01), Mulch
patent: 3325782 (1967-06-01), Der
patent: 3376667 (1968-04-01), Parr
patent: 4029007 (1977-06-01), Levinson
patent: 4367975 (1983-01-01), Tyers

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