Security gate latch system

Patent metadata

Field	Value
Publication number	US-9637959-B2
Application number	US-201414513780-A
Country	US
Kind code	B2
Filing date	Oct 14, 2014
Priority date	Oct 11, 2013
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

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.

First claim

The invention claimed is:

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.

2. The gate unit of claim 1 , wherein the movable gate retainer includes a rear cam ramp arranged to face in a rearward direction and a front cam ramp arranged to lie in spaced-apart relation to the rear cam ramp and face in an opposite forward direction to locate the pin-receiver notch therebetween, the rear cam ramp is arranged to intercept and engage the latch pin during swinging movement of the barrier wall about the gate pivot axis from an opened position toward the closed position and inclined to move the movable gate retainer downwardly relative to the body against an upwardly directed biasing force 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,
wherein the movable gate retainer includes a rear cam ramp arranged to face in a rearward direction and a front cam ramp arranged to lie in spaced-apart relation to the rear cam ramp and face in an opposite forward direction to locate the pin-receiver notch therebetween, the rear cam ramp is arranged to intercept and engage the latch pin during swinging movement of the barrier wall about the gate pivot axis from an opened position toward the closed position and inclined to move the movable gate retainer downwardly relative to the body against an upwardly directed biasing force generated by the retainer-biasing spring to guide the latch pin into the pin-receiver notch formed in the movable gate retainer during swinging movement of the barrier wall of the gate about the vertical pivot axis in the clockwise direction toward the closed position, and the front cam ramp is arranged to intercept and engage the latch pin during swinging movement of the barrier wall about the gate pivot axis from an opened position toward the closed position and inclined to move the movable gate retainer downwardly relative to the body against an upwardly directed biasing force generated by the retainer-biasing spring to guide the latch pin into the pin-receiver notch formed in the movable gate retainer during swinging movement of the barrier wall of the gate about the vertical pivot axis in the counterclockwise direction toward the closed position, and
wherein the body is formed to include a retainer-receiver chamber containing the retainer-biasing spring, a lower portion of the movable gate retainer engages the retainer-biasing spring and remains in the retainer-receiver chamber in both of the lowered and raised positions of the movable gate retainer, and an upper portion of the movable gate is formed to include the rear and front cam faces and is arranged to lie outside the retainer-receiver chamber formed in the body upon movement of the barrier wall to assume the closed position to locate each of the generated by the retainer-biasing spring to guide the latch pin into the pin-receiver notch formed in the movable gate retainer during swinging movement of the barrier wall of the gate about the vertical pivot axis in the clockwise direction toward the closed position, and the front cam ramp is arranged to intercept and engage the latch pin during swinging movement of the barrier wall about the gate pivot axis from an opened position toward the closed position and inclined to move the movable gate retainer downwardly relative to the body against an upwardly directed biasing force generated by the retainer-biasing spring to guide the latch pin into the pin-receiver notch formed in the movable gate retainer during swinging movement of the barrier wall of the gate about the vertical pivot axis in the counterclockwise direction toward the closed position.

3. The gate unit of claim 2 ,
wherein the movable gate retainer includes an upwardly opening U-shaped interior wall arranged to define a boundary of the pin-receiver notch and configured to include a curved bottom wall section arranged to mate with the latch pin upon movement of the barrier wall of the gate to assume the closed position, a rear side wall section arranged to interconnect the curved bottom wall and the rear cam ramp, and a front side wall section arranged to lie in spaced-apart parallel relation to the rear side wall and interconnect the curved bottom wall and the front cam face.

4. The gate unit of claim 2 ,
wherein the latch includes a pin-release lever formed to include an outwardly opening shallow pin-retention channel and a flanking outwardly opening first relatively deep lost-motion pin-release channel, the shallow pin-retention channel is arranged to confront a top aperture opening into the pin-receiver notch when the pin-release lever is rotated to assume the locked position to cause a shallow interior wall of the pin-release lever arranged to define the shallow pin-retention channel to block exit of the latch pin from the pin-receiver notch, and the relatively deep lost-motion pin-release channel is arranged to confront the top aperture opening into the pin-receiver notch when the pin-release lever is rotated to assume the unlocked position to cause a deep interior wall defining the first relatively deep lost-motion pin-release channel to lie in spaced-apart relation to the top aperture opening

Assignees

• Dorel Juvenile Group Inc

Inventors

• Marsden Andrew W
• Pereira Raul G

Classifications

• E05B63/0065

  Operating modes; Transformable to different operating modes · CPC title

• E05C1/08

  with latching action · CPC title

• E06B2009/002

  Safety guards or gates · CPC title

• E05B65/06

  for swing doors {or windows, i.e. opening inwards and outwards} · CPC title

• E06B9/04 Primary

  of wing type, e.g. revolving or sliding {(trap doors; louvre doors or windows E06B7/08)} · CPC title