Controlled Descent Brake Using Magnetic Phasing for Hands-Free Escape
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Solution Overview
Problem
Existing descent control systems, such as standard ropes, pose significant safety risks for untrained individuals and even trained responders in emergency situations, particularly when they are injured or lack necessary equipment, as they require manual operation and cannot ensure controlled velocity descent.
Innovation Solution
A controlled descent device with a compact, cost-effective design that uses a flexible tension member and a capstan mechanism without moving parts, allowing for hands-free operation and automatic velocity control, suitable for various user weights and environments, utilizing magnetic phasing to adjust the velocity control profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a standard descent rope is used for emergency escape, then the device complexity is reduced, but the reliability of controlled velocity descent deteriorates
Solution Approach 1:
The patent replaces complex mechanical braking systems with a magnetic field-based induction brake mechanism. Magnets mounted on the capstan interact with a conductive plate to generate eddy currents that automatically provide braking force, eliminating the need for mechanical friction components while ensuring reliable controlled velocity descent.
Solution Approach 2:
The induction brake mechanism is self-regulating and requires no manual operation. The system automatically controls descent velocity through the interaction between the rotating capstan magnets and the stationary conductive plate, providing hands-free operation that enhances reliability during emergency escape.
2Ease of operation
If manual operation is required for descent control, then the ease of operation deteriorates, but the extent of automation is reduced
Solution Approach 1:
The descent control system operates automatically without requiring manual intervention. The induction brake self-regulates descent velocity through electromagnetic interaction between the capstan magnets and conductive plate, allowing users to simply attach the device and descend safely without needing to operate controls or understand complex mechanisms.
Solution Approach 2:
Manual mechanical braking operations are replaced with an automatic electromagnetic braking system. The magnetic field interaction between rotating and stationary components automatically generates the necessary braking force to control descent velocity, eliminating the need for manual cranking or friction-based hand brakes.
3Manufacturing precision
If a capstan mechanism with moving parts is used, then the velocity control precision is improved, but the device complexity increases
Solution Approach 1:
Complex mechanical friction-based braking components are replaced with a simplified electromagnetic induction brake. Magnets mounted on the capstan interact with a conductive plate to generate eddy currents that provide smooth, precise velocity control without requiring mechanical friction surfaces, wear-resistant materials, or complex adjustment mechanisms.
Solution Approach 2:
The patent extracts and eliminates unnecessary mechanical components from traditional capstan systems. By removing friction-based braking elements and retaining only the essential rotating capstan structure enhanced with magnets, the design achieves velocity control precision with minimal device complexity.
4Ease of operation
If hands-free operation is implemented, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
Manual operation requirements are eliminated by implementing an automatic induction brake system. The electromagnetic interaction between capstan magnets and the conductive plate automatically regulates descent velocity without requiring the user to manipulate any controls, making the device as easy to use as simply attaching and descending while eliminating the need for hands-free mechanisms.
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
Enables safe, controlled descent for both trained and untrained individuals without manual interaction, maintaining operational safety and efficiency in emergency situations, including power outages, by providing a reliable and adaptable solution for different load weights and harsh conditions.
Implementation Method 1
An interior phasing induction brake may be utilized to adjust a velocity control profile
Implementation Method 2
The interior phasing induction brake may include a first set of magnets mounted on a first induction brake housing portion, a second set of magnets mounted on a second induction brake housing portion, and a conductive plate
Data Source
AI summary
A velocity control device for controlling the velocity of a load on a flexible tension member. The device can include a housing having a housing peripheral surface, with a portion of the housing peripheral surface defining an exit opening. The device can also include a phasing induction brake, the phasing induction brake being adjustable to control flux density in a magnetic circuit.