Security gate latch system

摘要

A gate is mounted to pivot about a pivot axis between opened and closed positions. A latch is provided to retain the gate in a doorway-closing position in a doorway formed in a door frame.

主权项

1. A gate unit comprising
a gate including a barrier wall and a latch pin mounted in a stationary position on the barrier wall to move therewith and arranged to extend in a horizontal direction away from the barrier wall and a gate mount adapted to mate with a door frame bordering a doorway, the gate mount including a gate-pivot support adapted to be coupled to a first doorjamb of the door frame and arranged to support the barrier wall of the gate for swinging movement in one of a clockwise direction and a counterclockwise direction about a vertical pivot axis between opened and closed positions, the gate mount further including a gate-motion blocker adapted to be coupled to an opposite second doorjamb of the door frame and arranged to mate with the latch pin included in the gate to block swinging movement of the barrier wall of the gate about the vertical pivot axis, wherein the gate-motion blocker comprises a latch including a body adapted to be coupled to the second doorjamb, a movable gate retainer formed to include a pin-receiver notch sized to receive a portion of the latch pin upon movement of the barrier wall to assume the closed position, a retainer-biasing spring arranged to yieldably urge the movable gate retainer to move upwardly relative to the body from a lowered position discharging the latch pin from the pin-receiver notch to free the barrier wall to swing about the vertical pivot axis to a raised position receiving and retaining the latch pin in the pin-receiver notch in response to swinging movement of the barrier wall about the vertical pivot axis to assume the closed position to block any further swinging movement of the barrier wall about the vertical pivot axis to retain the barrier wall in the closed position, and wherein the body is formed to include a retainer-receiver chamber and the movable gate retainer is located to position the pin-receiver notch in the retainer-receiver chamber when the movable gate retainer occupies the lowered position to discharge the latch pin from the pin-receiver notch.