Gate operator

Details Gate operator Gate operator

1987-02-09

1988-10-25

Dorner, Kenneth J.

Movable or removable closures

With means mounting closure for swinging

Transverse pivot; e.g., single pivoted corner

49339, 49396, E05D 700

Patent

active

047793791

ABSTRACT:
A gate operator for lifting a gate about a horizontal pivot at a lower proximate corner thereof about a 90.degree. arc in the plane of the gate and having spring means for balancing and holding the gate weightless in all positions of its arcuate movement, permitting the gate to be moved between fully opened and closed positions manually or with minimum applied force, and preferrably comprising crank-like means operating through a raceway on the face of a driving wheel, the gate operator having a position locking the gate in its closed position against vertical forces exerted at the gate for opening same; and a safety snubber controlling the speed of the gate in either opening or closing movement.

REFERENCES:
patent: 1983152 (1934-12-01), Stewart
patent: 3370381 (1968-02-01), Wetter
patent: 4470221 (1984-09-01), Courtis
patent: 4481737 (1984-11-01), Rebhan et al.

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