Isometric Exercise System Pivot Assembly Force Correction

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Solution Overview

Problem

Conventional isometric exercise apparatuses inaccurately measure force due to variability in mechanical components, leading to inconsistent force readings and weight calculations, as they fail to account for how force is transferred through the equipment to the measurement component during different exercises.

Innovation Solution

A reconfigurable network-enabled isometric exercise system with force-receiving components, a pivot assembly, and structural assembly, along with companion software that uses force correction equations to accurately translate measured force into tangential force, providing consistent and repeatable weight calculations by accounting for the mechanical transfer of force during various exercises.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional isometric exercise apparatuses use basic mechanical design with load cells, then the apparatus can accommodate wide range of applied force, but the force measurement becomes imprecise and inconsistent

Engineering Contradiction:
Improveaccommodation of wide range of applied forceVSAvoidforce measurement precision
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent introduces a pivot assembly as an intermediary component between the force-receiving component and the load cell. This pivot assembly serves as a mechanical mediator that standardizes the force transfer path, ensuring that force is consistently transferred through a defined mechanical pathway regardless of the specific exercise performed. The pivot assembly acts as a mediator that translates various exercise-specific force applications into standardized measurements for the load cell.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies parameter changes by using force correction equations that adjust the measured force values based on specific exercise parameters. These equations modify the raw measurements from the load cell by accounting for variations in mechanical leverage, angle of force application, and other exercise-specific parameters, thereby standardizing the force measurements across different exercises while maintaining the versatility of the apparatus.

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If conventional apparatuses do not account for force transfer through mechanical components, then the device complexity remains low, but measurement consistency deteriorates

Engineering Contradiction:
Improvemechanical design simplicityVSAvoidmeasurement consistency
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The pivot assembly serves as a standardized intermediary that ensures consistent force transfer across all exercises. By introducing this dedicated mechanical mediator, the system achieves reliable measurements without requiring complex electronic sensors or sophisticated mechanical designs for each exercise variant. The pivot assembly simplifies the overall system while improving reliability.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces complex mechanical correction systems with mathematical force correction equations. Instead of using additional mechanical components or complex mechanical linkages to account for force transfer variations, the system uses software-based correction equations that process the raw mechanical measurements, thereby maintaining mechanical simplicity while achieving high measurement consistency.

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

3Stability of the object's composition

If the same force is applied in two separate repetitions on conventional apparatus, then the user effort remains consistent, but the force readings become different due to variability

Engineering Contradiction:
Improveuser effort consistencyVSAvoidforce reading consistency
Core Design Contradiction:
Stability of the object's compositionVSMeasurement precision

Solution Approach 1:

The system implements feedback through force correction equations that continuously adjust the measured force values based on the specific exercise being performed. This feedback mechanism ensures that even when the same physical effort is applied, the system compensates for mechanical variations and provides consistent, accurate force readings across multiple repetitions by comparing and adjusting measurements against expected values for each exercise type.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The force correction equations dynamically adjust measurement parameters based on the exercise type and mechanical configuration. By changing the correction factors applied to the raw measurements according to the specific exercise parameters, the system maintains measurement consistency across repetitions while accommodating the stability of user effort, effectively normalizing variations in mechanical response.

Inventive Principle:
Principle #35Parameter changes

4Ease of operation

If conventional apparatuses ignore force transfer mechanics for different exercises, then the apparatus remains simple to operate, but measurement accuracy decreases

Engineering Contradiction:
Improveapparatus operation simplicityVSAvoidforce measurement accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent replaces complex mechanical adjustments with mathematical corrections. Instead of requiring users to manually adjust mechanical components or the system to physically reconfigure itself for different exercises, the system uses force correction equations that automatically compensate for exercise-specific mechanical variations. This maintains ease of operation while significantly improving measurement accuracy.

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

Solution Approach 2:

The system changes measurement parameters through software-based correction equations rather than requiring physical reconfiguration. The force correction equations dynamically adjust the interpretation of load cell readings based on the exercise being performed, allowing the apparatus to maintain its simple mechanical design and ease of operation while achieving high measurement accuracy across different exercise types.

Inventive Principle:
Principle #35Parameter changes

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 system improves the accuracy and consistency of force measurement and weight calculations by standardizing force transfer through the pivot assembly, ensuring identical readings across repetitions and equipment types, enhancing user satisfaction and exercise effectiveness.

Implementation Method 1

The pivot assembly can rotationally transfer the force applied by the user to the force-receiving component to the measurement component

Methodology Applied
Scientific EffectRotation:

Implementation Method 2

The measurement component can be used to measure the amount of force applied by the user to the force-receiving component

Methodology Applied
Scientific EffectForce measurement:

Data Source

PatentUS11471730B1Isometric exercise system having improved accuracy and consistency for applied force determinations
Publication Date: 2022.10.18 SCHWEITZER ROBERT A
  • US11471730B1 patent drawing
  • US11471730B1 patent drawing
  • US11471730B1 patent drawing

AI summary

An isometric exercise system comprised of a network-enabled isometric exercise apparatus, force correction equations, and an isometric exercise companion software application. The isometric exercise apparatus can include force-receiving components, a measurement component, a pivot assembly, and a structural assembly. The measurement component can measure the amount of applied force. The pivot assembly can rotationally transfer the applied force to the measurement component. Force analysis of exercises can indicate that only a tangential component of the applied force is mechanically transferred to the measurement component via the pivot assembly. The force correction equations can translate the measured force into the tangential force transferred by the pivot assembly. The isometric exercise companion software application can present the amount of weight manipulated by the user to perform the exercise calculated using the force correction equation and the measured force. This calculation can have greater accuracy and consistency than utilizing the measured force.