Gate assembly
AssigneeW & A Enterprises
InventorsColvin H. Agnew, Weldon O. Wade, Stuart H. Agnew
Life of this patent
Estimating the term…
Abstract
A gate assembly for a motor driven vertically pivoting gate includes a support frame and coil springs attached between the gate and the support frame to bias the gate toward a vertical, open position and thereby assist the drive motor. A member secured to the support frame deflects the springs when the gate is in the open position, thereby placing the springs in tension so that the springs also assist the drive motor in starting the gate to move from its open position toward its closed position. The member also engages the gate when it is in its open position and supports the gate in a precisely vertical orientation.
Claims11
A gate assembly comprising:
- a gate;
- a support for said gate, said gate being movable relative to said support between a closed position, in which said gate is generally horizontal, and an open position, in which said gate is generally vertical;
- means for biasing said gate toward the open position, said biasing means exerting a force on said gate insufficient to independently move said gate to the open position;
- and
- means for inducing a return bias in said biasing means when said gate is near the open position,
- said return bias inducing means also comprising means for contacting said gate to support said gate in a precisely vertical orientation when said gate is in the open position.
Dependencies are inferred from the claim text.