Instep Weighting Accessory With Secure Fastening for Cleated Shoes

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Solution Overview

Problem

Existing instep weighting devices for sports shoes with studs or cleats are not securely fastened, causing discomfort, interfering with ball play, and risking detachment during impact, and require cumbersome lace-tying for weight alternation.

Innovation Solution

A releasable instep weighting training accessory with a flexible strip and hook-and-loop fastening system, snugly enclosing a weight in a sheath, which is adapted to fit around the instep, ensuring secure attachment and comfortable movement, and allowing easy weight alternation without lace-tying.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If known instep weighting devices are used on shoes with studs or cleats, then the weight can be placed on the instep, but the device cannot be securely fastened and may become unintentionally detached

Engineering Contradiction:
Improvesecure fasteningVSAvoidadaptability to shoes with studs
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent uses a flexible strip made of elastic material that can be wrapped around the instep and conform to the shoe's surface, including areas with studs or cleats. The flexibility allows the strip to adapt to various shoe configurations while maintaining secure fastening through elasticity and friction.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The fastening system is divided into separate modular components including a first end with fastening means and a second end with corresponding engagement features. This segmentation allows the strip to be independently adjusted and secured at different positions around the instep, providing reliable fastening regardless of shoe stud configuration.

Inventive Principle:
Principle #1Segmentation

2Reliability

If known instep weighting devices are used, then the weight can be added for training, but the device may interfere with ball play or cause discomfort during impact

Engineering Contradiction:
Improvedevice stability during impactVSAvoiddiscomfort and interference with ball play
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates a padding layer between the weight and the instep that cushions against impact forces before they reach the foot. This pre-positioned cushioning prevents discomfort and protects against injury when the ball impacts the instep during football activities, while the flexible strip ensures the weight remains securely in place.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The flexible strip with elastic material allows the weighting device to move slightly with natural foot movements and ball impacts, preventing rigid interference with ball play while maintaining secure attachment. The flexibility ensures the device adapts to dynamic movements without causing discomfort or detaching.

Inventive Principle:
Principle #30Flexible shells and thin films

3Productivity

If known instep weighting devices are used, then the weight can be applied, but the device requires repeatedly tying and untying shoelaces to alternate weight training

Engineering Contradiction:
Improvetraining efficiencyVSAvoidease of weight alternation
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The fastening system is designed as a self-contained module with integrated fastening means at the ends of the strip, separate from the shoe's lacing system. This allows the weighting device to be independently fastened and unfastened without affecting the shoe laces, enabling quick alternation between weighted and unweighted training sets.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The releasable fastening system allows dynamic adjustment of the weighting device during training sessions. The fastening means can be quickly engaged and disengaged, enabling athletes to alternate between weighted and unweighted exercises without the time-consuming process of tying and untying shoelaces, thus improving training efficiency.

Inventive Principle:
Principle #15Dynamics

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

Enhances sports performance by preventing weight detachment and discomfort, maintaining ball trajectory, and enabling quick weight changes for muscle balance during training sessions.

Implementation Method 1

The strip may be made of an elastic material, for example of polyvinyl chloride (PVC)

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The training accessory comprises a fastening system for releasably fastening the training accessory around the instep of a shoe

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3400822B1An instep weighting training accessory
Publication Date: 2025.11.26 POWERINSTEP
  • EP3400822B1 patent drawingFigure 1
  • EP3400822B1 patent drawingFigure 2~3a
  • EP3400822B1 patent drawingFigure 3b~3c

AI summary

In a first aspect, an instep weighting training accessory to be releasably fastened around the instep of a shoe having studs or cleats on its sole is provided. The accessory comprises a strip, a weight and a layer of padding material. The strip comprises an inner layer intended to be in contact the shoe and a sheath to be arranged on the instep of the shoe. The weight is enclosed inside the sheath and the padding material is located between the weight and the inner layer of the strip. In a second aspect an instep weighting training set comprising a plurality of training accessories is provided.