Gate Latch Assembly with Integrated Swing Blocker

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Solution Overview

Problem

Conventional gate latch systems often require multiple actions to open and lack flexibility in direction control, with rotatable retainers and swing blockers typically used separately, leading to reduced structural rigidity and potential user confusion.

Innovation Solution

A gate latch assembly featuring a movable upper retainer and a fixed lower retainer with a swing blocker positioned at the top, allowing the upper retainer to move beyond the blocker, enabling easy operation from either side and reducing torque on the gate barrier, while the blocker prevents opening in a selected direction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If rotatable retainers and swing blockers are used separately in conventional gate latch systems, then direction control is achieved, but structural rigidity is reduced and user confusion increases

Engineering Contradiction:
Improvedirection controlVSAvoidstructural rigidity
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The patent combines the retainer and swing blocker into a single integrated gate latch assembly. The blocker is positioned at the top of the latch assembly and works in conjunction with the movable retainer, eliminating the need for separate rotatable retainer and swing blocker components. This integration maintains structural rigidity while providing direction control through the coordinated action of the integrated components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The gate latch assembly is segmented into distinct functional components (base, movable retainer, blocker) that work together. The blocker is positioned at the top portion of the assembly and can be independently adjusted, while the retainer mechanism operates separately but cooperatively. This segmentation allows for optimized structural design of each component while maintaining overall rigidity.

Inventive Principle:
Principle #1Segmentation

2Reliability

If conventional gate latch systems require multiple actions to open, then security is improved, but ease of operation is reduced

Engineering Contradiction:
ImprovesecurityVSAvoidoperation simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent employs a movable retainer that can transition between locked and unlocked positions, providing dynamic security control. The retainer is biased by a spring mechanism that allows it to move freely in one direction (easing opening) while maintaining secure locking in the opposite direction. This dynamic mechanism reduces operational steps while preserving security.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The gate latch assembly includes a spring-biased retainer that automatically returns to its locked position after being opened. The system self-regulates the locking state, requiring minimal user intervention. The spring mechanism provides automatic reset functionality, reducing the number of actions needed to secure the gate after opening.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If the upper retainer is constrained by the swing blocker, then direction control is improved, but ease of operation and adaptability are reduced

Engineering Contradiction:
Improvedirection controlVSAvoidoperation flexibility
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The blocker is positioned at the top portion of the gate latch assembly, creating a localized directional control mechanism. This positioning allows the blocker to influence the latch member's movement direction without constraining the entire retainer mechanism. The upper retainer can still move freely beyond the blocker's position, maintaining operational flexibility while providing direction control where needed.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent positions the blocker in a vertical dimension at the top of the latch assembly, while the retainer operates in a horizontal dimension. This dimensional separation allows the blocker to provide directional control in one plane without constraining the retainer's movement in another plane, enabling easy operation from either side while maintaining adaptability.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP3868995B1Gate latch
Publication Date: 2024.03.06 ELBEE
  • EP3868995B1 patent drawingFigure 1
  • EP3868995B1 patent drawingFigure 2
  • EP3868995B1 patent drawingFigure 3

AI summary

The invention relates to method and apparatuses for using a gate latch to selectively prevent the opening of a gate barrier. The gate latch includes a retainer assembly to selectively prevent a latch member attached to a gate barrier from moving sufficiently to allow the gate barrier to swing open. A swing blocker may be provided on the same latch as the retaining assembly so that the gate may be opened only in a first direction.