Automatic gate opener with safety provisions

Details Automatic gate opener with safety provisions Automatic gate opener with safety provisions

1991-06-27

1992-04-07

Kannan, Philip C.

Movable or removable closures

Safety means responsive to obstruction to closure

Closure drive stopping or reversal

49139, 49334, 49335, E05F 1502, E05F 1100

Patent

active

051015951

ABSTRACT:
A gate opening mechanism is described which uses a rotationally floating motor. Unusually high torques caused by gate blockage causes the motor frame to rotate around its axis and to trigger a motor shut off switch.
The mechanism is mounted in the space between a fence post and the gate post adjacent to it without requiring a large opening.

REFERENCES:
patent: 1760062 (1930-05-01), Hynes
patent: 2561623 (1951-07-01), Hall
patent: 3955661 (1976-05-01), Popper et al.
patent: 4403449 (1983-09-01), Richmond
patent: 4564098 (1986-01-01), Hormann
patent: 4735018 (1988-04-01), Duncan et al.

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