Springless Gate with Oblique Pivot Axis
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Solution Overview
Problem
Conventional gate apparatuses for home passageways often require user intervention to return to a closed position, lacking automatic closure mechanisms that prevent children or pets from accessing restricted areas without the aid of springs.
Innovation Solution
A gate apparatus with a barrier frame and a gate that swings on an oblique axis, incorporating vertical and horizontal support members, and a pivot connection with an oblique axis that allows the gate to automatically return to a closed position under gravity, featuring dual latches that require simultaneous operation for opening and snap into place for automatic closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a spring mechanism is used to automatically return the gate to closed position, then automatic closure is achieved, but device complexity and maintenance requirements increase
Solution Approach 1:
The patent removes the spring mechanism entirely from the gate system. Instead of using a spring to provide the closing force, the invention relies on the oblique pivot axis geometry to create automatic closure through gravitational force acting on the gate's weight, thereby eliminating the complex spring mechanism while maintaining automatic closure functionality
Solution Approach 2:
The patent replaces the spring-based mechanical system with a gravity-based system. The oblique pivot axis creates a mechanical advantage where the gate's own weight, acting through the angled pivot point, generates the closing force that previously required a spring mechanism, thus substituting one mechanical system for another simpler one
2Extent of automation
If a conventional vertical pivot axis is used, then simple installation is achieved, but the gate cannot automatically return to closed position without spring aid
Solution Approach 1:
The patent employs an asymmetric (oblique) pivot axis that is angled relative to the vertical direction. This asymmetric geometry is specifically designed so that when the gate swings open, the pivot axis orientation causes the gate to naturally swing back toward the closed position under gravity, creating automatic return functionality without requiring symmetric vertical mounting
3Ease of operation
If a single latch is used, then ease of operation is improved, but child safety is compromised
Solution Approach 1:
The patent divides the latching system into two separate latches: an upper latch and a lower latch. Both latches must be simultaneously engaged to fully secure the gate, and both must be simultaneously released to open the gate. This segmentation creates a more reliable safety system that prevents children from opening the gate by manipulating only one latch, while still allowing authorized users to open it by operating both latches together
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures child safety by automatically returning to a closed position without user intervention, enhancing security and convenience by eliminating the need for springs and requiring coordinated latch operation for opening.
Implementation Method 1
the gate returns automatically to a closed position or close to a closed position under the influence of gravity
Data Source
AI summary
A gate apparatus having an automatically returning gate, an upper latch operated by an upper button, and a lower latch operated by an upper finger handle. Each of the latches must be opened to open the gate. The gate returns without the aid of a spring to a position close to the closed position or to the closed position by the structure of a pivot or hinge connection between the gate and the frame of the gate. Gate tubes are rectangular in section for their entire length. Wood panels are included in the gate and excluded from other portions of the gate apparatus to make the gate stand out to the user seeking to open the gate.