Elastic Member Exercise Device with Pivoting Attachment

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Solution Overview

Problem

Exercise devices with elastic cords face strain and breakage at attachment points, and existing hand grips require replacement when different resistance levels are needed, leading to increased costs and inconvenience.

Innovation Solution

The design incorporates flexibly pivotal points of attachment for elastic cords and a hand grip system that allows for easy installation and replacement of elastic cords, reducing strain and enabling adjustable resistance levels without replacing the entire device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If elastic cords are anchored to fixed points in exercise devices, then the device provides stable resistance, but the elastic cords experience high strain and breakage at attachment points

Engineering Contradiction:

Improveelastic cord durabilityVSAvoidstrain at attachment points

Core Design Contradiction:

ReliabilityVSStress or pressure

Solution Approach 1:

The patent applies the dynamics principle by replacing fixed rigid attachment points with pivoting attachment mechanisms. The elastic cord is connected to a pivotable element that can rotate or pivot relative to the main device body, allowing the attachment point to dynamically adjust its position and orientation. This dynamic adjustment reduces concentrated strain at the attachment point by distributing the force through rotational movement, thereby extending elastic cord durability while maintaining resistance functionality.

Inventive Principle:

Principle #15Dynamics

2Reliability

If exercise hand grips use fixed elastic cords with specific elasticity, then the device provides consistent resistance, but the entire device must be replaced when different resistance levels are needed

Engineering Contradiction:

Improveresistance consistencyVSAvoidresistance level adjustability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies segmentation by dividing the exercise device into separable components: a reusable hand grip body and interchangeable elastic cord elements. The elastic cord is designed as a separate, replaceable component that can be independently swapped without replacing the entire hand grip device. This segmentation allows users to maintain consistent resistance through proper installation while achieving adaptability by selecting different elastic cords with varying elasticity levels for different resistance requirements.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies parameter changes by enabling the elastic cord's key parameter (elasticity) to be varied through component interchangeability. Different elastic cords with different elasticity values can be installed in the same hand grip body, allowing the resistance level parameter to be changed without modifying the overall device structure. This provides versatility in resistance levels while maintaining the reliability of the hand grip mechanism itself.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If elastic cords are frequently replaced to change resistance levels, then different resistance levels can be achieved, but the cost and inconvenience increase

Engineering Contradiction:

Improveresistance level varietyVSAvoidreplacement time and cost

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by designing the hand grip with pre-configured attachment mechanisms and standardized elastic cord interfaces. The pivotable attachment points and cord retention features are prepared in advance to facilitate quick and easy cord replacement. Users can swap elastic cords without complex assembly or special tools, significantly reducing the time and effort required for resistance level changes while maintaining adaptability across multiple resistance options.

Inventive Principle:

Principle #10Preliminary action

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

This solution extends the life of elastic cords by reducing strain and allows users to conveniently change resistance levels, enhancing workout routines with a portable and cost-effective exercise device.

Implementation Method 1

an elongated elastic member 40 extending between the two. The elastic member 40 has an elastic member first end 42 removably secured to the foot cuff 20, and an elastic member second end 44 removably secured to the hand grip 30

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS8075462B1Elastic member exercise device

Publication Date: 2011.12.13 LIFELINE PRODUCTS LLC

AI summary

An exemplary exercise device includes a foot cuff and a hand grip separated by an elastic member. Rigid and flexible foot cuff sections define a foot passage for a foot. A foot cuff body passage in the rigid foot cuff section receives a foot cuff pivot having an enlarged portion and a plug. The plug is inserted in an elastic member socket, and is able to point in different directions as the enlarged portion pivots within the foot cuff body passage. The hand grip includes a hand grip channel for replaceably receiving the elastic member, which is removably secured to the hand grip using an impinger or by being wrapped about the hand grip and inserted in a groove. A user can insert a foot through the foot passage and grip the hand grip, stretching the elastic member between the foot and hand while walking, performing calisthenics, etc.