Vehicle-operated gate

Details Vehicle-operated gate Vehicle-operated gate

1985-09-30

1986-09-16

Lyddane, William E.

Movable or removable closures

Mounted for multidirectional or oblique movement

One direction imparts gravitational bias to swinging...

49240, 49364, E05P 706

Patent

active

046114335

ABSTRACT:
A swinging gate apparatus is provided having a gate member which automatically opens by pressure applied to either side by an automobile or other vehicle. In opening, the gate member tilts upwardly so that the force of gravity causes it to close. The rate of opening and closing is controlled by the concertive action of spring means, motion dampening means, and a cam mechanism.

REFERENCES:
patent: 489621 (1893-01-01), Williams
patent: 605748 (1898-06-01), Sawyer
patent: 721600 (1908-02-01), Patrick
patent: 1075129 (1913-10-01), Stickley
patent: 1277334 (1918-08-01), Miller
patent: 1367843 (1921-02-01), Thurston
patent: 1609369 (1926-12-01), Laird
patent: 2691836 (1954-10-01), David
patent: 2693043 (1954-11-01), Leake
patent: 2693653 (1954-11-01), Dean

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