Automatic corral gate closure

Details Automatic corral gate closure Automatic corral gate closure

2005-09-12

2008-11-04

Miller, William L. (Department: 3677)

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

Closers

C016S072000, C016S084000, C016S085000, C016S280000, C016S298000

Reexamination Certificate

active

07444714

ABSTRACT:
A ranch gate arm assembly which incorporates a gate arm that is mounted to allow swivelling about a longitudinal pivot when an external man or machine force is applied to either side of the gate arm thereby inducing the gate arm to swing out, and two torsion springs, one assembled on each side of the ranch gate arm which push against correlating sides of the gate and push the gate back to a center position after the external force has passed completely through the opening. This gate arm assembly is equipped with a smoothing release assembly, which eliminates the jolt force caused by the quick returning of the gate assembly to the center position that the gate was originally in before the external force was applied.

REFERENCES:
patent: 1847822 (1932-03-01), Denton
patent: 2118722 (1938-05-01), Bock
patent: 3411241 (1968-11-01), Harmon
patent: 4616799 (1986-10-01), Rebentisch
patent: 4817242 (1989-04-01), Rapp
patent: 5133152 (1992-07-01), Grancagnolo
patent: 5673459 (1997-10-01), Baghdasarian
patent: 6477736 (2002-11-01), Abernathy
patent: 6715182 (2004-04-01), Cheng

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