Vertical cantilevering gate

• US 4,922,655 A
• Filed: 01/11/1988
• Issued: 05/08/1990
• Est. Priority Date: 01/11/1988
• Status: Expired due to Fees

• Current Assignee: Morton Seal
• Original Assignee: Morton Seal
• Inventors: Seal, Morton
• Primary Examiner(s): Dorner, Kenneth J.
• Assistant Examiner(s): Anderson, Gerald A.
• Application Number:
  US07/142,499
• Time in Patent Office: 848 Days
• Field of Search: 49/131, 49/132, 49/356, 49/360, 49/372, 49/373, 49/9, 160/32, 160/33, 160/331, 160/338
• US Class Current: 49/131
• CPC Class Codes: E06B 11/02 Gates; Doors

Abstract

A vertically movable cantilevering type gate is disclosed. All that is required is an elongated cylinder mounted vertically and a piston rod slidably mounted therein. The piston rod is mounted for vertical movement in the cylinder and suitable laterally spaced vertically movable guides are provided to maintain the gate in alignment with the gate opening. Preferably a channel shaped cap bar is positoned to overlie a trough into which interconnected link members are adapted to fold. The link members support laterally extending mesh type closure members which close the gate opening when the gate is elevated. The gate is controlled by a water pressure operated system. The valves controlling the flow of pressurized water to actuate the gate are controlled electrically. In one desirable construction when no electric power is applied, the valves direct water under pressure to urge the piston rod upwardly in the cylinder to maintain the gate in the obstructing or closed position. When electric power is applied to reverse the position of the valves the piston rod moves downwardly in the cylinder whereupon the gate structure folds into the trough and the channel shaped cap bar member moves to overlie the trough and maintain the gate in the open position.

Claims

1. In a vertically movable barrier structure adapted to intersect a passageway, a cap bar a plurality of interconnected horizontal and vertical members connected to the cap bar and, movable between a down passage unobstructing position and an upper passage obstructing position, an actuator comprising a vertically disposed cylinder and piston combination, connecting means between the piston and the cap bar a source of water pressure and a water pressure control means to move the piston in the cylinder, the cap bar member, and the interconnected horizontal and vertical members between the down unobstructing position and the upper passage obstructing position, a trough extending across the passageway to receive the interconnected horizontal and vertical members and the cap bar member aligned with the trough and connecting means between the cap member and one of the horizontal members, the control means wherein the water pressure is employed to raise or lower the barrier structure by feeding pressurized water into one end of the cylinder and water in the other end of the cylinder is vented to the trough due to the differential of water pressure to wash out the trough member when the gate is actuated.

2. The invention defined in claim 11 wherein the two sets of valves are actuated electrically, and the barrier is moved to the obstructing position when the electric current is interrupted.