Magnetic Door Lock Control Without Wire Loops

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Solution Overview

Problem

Existing glass doorway systems with egress handles require visible and potentially corroding electrical wire loops for communication between the door handle and locking mechanism, detracting from the appearance and being prone to tampering.

Innovation Solution

A magnetic door lock control system using permanent magnets to communicate between the egress handle and locking mechanism, eliminating the need for electrical connections and wire loops.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If electrical wire loops are used to connect the egress handle and locking mechanism, then reliable electrical communication is achieved, but the appearance is compromised and tampering risk increases

Engineering Contradiction:
Improveelectrical communication reliabilityVSAvoidappearance degradation and tampering vulnerability
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the electrical wire loop (electrical system) with a magnetic field-based communication system. Magnets embedded in the egress handle and corresponding magnet sensors in the locking mechanism communicate door status through magnetic field detection, eliminating the need for visible electrical wires and their associated aesthetic and security problems.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces magnets and magnet sensors as intermediary elements that mediate communication between the egress handle and locking mechanism without requiring direct electrical contact. The magnetic field serves as an intermediary carrier of information about door handle position and lock status.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If electrical wires are routed through the door jamb and header, then functional connection is established, but the clean appearance of glass entryway is compromised

Engineering Contradiction:
Improvefunctional connectivityVSAvoidaesthetic appearance
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The patent substitutes the visible electrical wire routing system with an invisible magnetic field system. The magnets in the handle and magnet sensors in the locking mechanism communicate through air and glass without requiring physical wire conduits, preserving the clean aesthetic of glass entryways while maintaining functional connectivity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Object-affected harmful factors

If wire loops are concealed within tubing and conduits, then appearance is improved, but the system becomes more complex and wires remain vulnerable to corrosion

Engineering Contradiction:
Improvevisual visibilityVSAvoidwire routing complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent replaces the complex wire routing infrastructure (tubing, conduits, connectors) with a simple magnetic field-based system. This eliminates the need for concealed wiring channels and reduces overall system complexity while achieving the same goal of invisible communication between handle and lock.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the electrical wire loop entirely from the system, replacing it with a magnetic communication method. This extraction eliminates the need for wire protection infrastructure and simplifies the overall door lock control system architecture.

Inventive Principle:
Principle #2Taking out (Extraction)

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

Provides a cleaner, tamper-proof, and integrated appearance while maintaining functionality, and easily interfaces with security systems.

Implementation Method 1

employs a first magnet configured with an egress door handle system and a second magnet in magnetic alignment with the first magnet, separated by a gap, such that magnetic forces between the magnets cause movement of an actuator assembly

Methodology Applied
Scientific EffectMagnetic forces: Magnetism

Data Source

PatentUS12473762B2Magnetic door lock control system and method
Publication Date: 2025.11.18 FRAMELESS HARDWARE CO LLC
  • US12473762B2 patent drawing
  • US12473762B2 patent drawing
  • US12473762B2 patent drawing

AI summary

A magnetic door lock control system for use with an egress handle system and a door is provided. The magnetic door lock control system employs magnets that communicate with one another across the door jamb thereby eliminating the need for a hard wired electrical connection between the egress handle system (e.g., a mechanical switch bar) configured with a door and a door locking mechanism mounted above the door in the header of the entranceway. In this way, the need for an electrical wire loop between the egress handles and the door locking mechanism is eliminated.