Automatic gate closure apparatus

Details Automatic gate closure apparatus Automatic gate closure apparatus

1986-01-10

1987-03-17

Silverberg, Fred

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Closers

Spring

16253, 16308, 256 26, E05F 108

Patent

active

046495975

ABSTRACT:
Gate closure apparatus for closing a gate mounted pivotably on a gate post, such apparatus for connection to the gate and gate post and for developing and storing energy upon opening of the gate, and upon release of the gate, the gate closure apparatus for releasing the energy to produce and apply torque to the gate sufficiently large to close the gate; such apparatus may include a coil spring wound in a predetermined direction and having a normal state, upon the gate opening the spring winding in a predetermined direction out of the normal condition (e.g. coiling further tightly) to develop and store the energy, and upon release of the gate, the spring unwinding and returning to the normal condition to produce and apply the torque to the gate.

REFERENCES:
patent: 403922 (1889-05-01), Davis
patent: 1130908 (1915-03-01), Kolashinske
patent: 2025238 (1935-12-01), Harter
patent: 2539151 (1951-01-01), Mills
patent: 3411241 (1968-11-01), Harmon
patent: 4111401 (1978-09-01), Pickett

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