Wearable Counterweight Force Distribution for Ergonomic Load Lifting
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Solution Overview
Problem
Existing devices for physical activity and muscle training, such as electrical stimulators and exoskeletons, have limitations including incompatibility with certain users, complexity, and inefficiency in providing consistent benefits, and known exoskeletons are cumbersome and difficult to maintain.
Innovation Solution
A wearable device that distributes weight force ergonomically using force-transmitting elements and a coupling portion to counteract gravity, allowing easy use and versatility during physical activity or work, and a kit for physical activity that includes a wearable device and couplable objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical stimulators are used for muscle enhancement and recovery, then muscle tone can be enhanced, but the device cannot be used by certain categories of users (pacemaker wearers, pregnant women, epileptic individuals)
Solution Approach 1:
The patent replaces electrical stimulation with a mechanical counterweight system. Instead of using electrical fields to stimulate muscles, the invention uses a wearable mechanical device that provides physical support and counterbalancing force through force-transmitting elements connected to the user's body, eliminating electrical hazards while maintaining muscle engagement benefits
Solution Approach 2:
The patent introduces a mechanical intermediary system (wearable device with force-transmitting elements) between the user and the load. This intermediary provides support through mechanical force transmission rather than direct electrical stimulation, making the system safe for all user categories while still achieving muscle enhancement through controlled mechanical loading
2Reliability
If known exoskeletons are used to support lifting loads, then work activity can be facilitated, but the overall dimensions and sustained weights reduce practicality and applicability
Solution Approach 1:
The patent divides the support function into segmented force-transmitting elements distributed across the body (e.g., one element on each arm, additional elements on legs or torso). This segmentation allows the total support weight to be distributed across multiple lightweight components rather than concentrated in a single heavy exoskeleton structure
Solution Approach 2:
The patent applies support functionality locally at specific anatomical points where force transmission is most effective, rather than using a comprehensive full-body exoskeleton. Each force-transmitting element provides localized support at its attachment point, and the combination of localized elements achieves overall load support with minimal total device weight
3Ease of operation
If known exoskeletons are made of multiple components that interface with each other, then ergonomic portions can be provided, but maintenance becomes complex and hindered
Solution Approach 1:
The patent merges the force-transmitting elements into a simplified configuration where each element operates independently with minimal interfaces. Rather than multiple interconnected exoskeleton components, the invention uses discrete elements that can be individually adjusted and replaced, reducing maintenance complexity while preserving ergonomic benefits
Solution Approach 2:
The patent extracts the essential support function from complex multi-component exoskeletons and implements it through simpler force-transmitting elements. By removing unnecessary intermediate components and interfaces, the invention maintains ergonomic functionality while eliminating maintenance hurdles associated with complex component assemblies
4Reliability
If known electrical stimulators are used consistently over long periods in short sessions, then benefits can be experienced, but the usage time and frequency requirements reduce productivity
Solution Approach 1:
The patent enables continuous useful action by providing ongoing mechanical support throughout the entire duration of physical activity or work tasks. Unlike electrical stimulators that require periodic short sessions, the wearable counterweight system provides continuous support during natural movement and work cycles, eliminating idle time between treatment sessions and maintaining consistent muscle engagement
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
The device provides effective support in lifting loads with high usability and versatility, allowing users to maintain a counterweight and neutralize the effects of gravity, enhancing muscle performance and reducing the need for frequent sessions.
Implementation Method 1
at least two force-transmitting elements (6, 7) connected to the lower portion (5)
Implementation Method 2
Another object of the present invention is to provide a wearable device capable of generating a counterweight in response to a load borne by an anatomical part of the user opposite the one where the device is worn and placed
Data Source
AI summary
A wearable device wearable by a user to facilitate lifting of loads by the user, preferably couplable to an anatomical part of the body of the user. The device comprises a main element, which has a resting surface and a lower portion, and at least two force-transmitting elements connected to said lower portion. The device comprises a coupling portion connected to said force-transmitting elements and adapted to be in contact with the anatomical part of the body of said user to transmit and distribute a weight force from said force-transmitting elements to an anatomical part of the body of the user.