Rowing Exercise Assembly with Dynamic Resistance and Motion Tracking

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Solution Overview

Problem

Conventional rowing machines lack versatility in replicating real-life rowing motions and do not allow users to easily switch between different rowing routines, nor do they provide adjustable resistance to accommodate varying user strengths and sizes, and they fail to translate rowing motions into digital displays for video games or virtual reality applications.

Innovation Solution

An exercise assembly that allows users to replicate kayaking or rowing motions by adjusting resistance through a fan structure within an air chamber, using a pulley and gear system with a motion sensor to translate handle movements into corresponding digital displays, enabling various rowing routines and accommodating different user strengths through adjustable resistance and motion tracking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional rowing machines use fixed resistance mechanisms, then the device structure remains simple, but the versatility and adaptability to different user strengths are limited

Engineering Contradiction:
Improveadaptability to different user strengthsVSAvoiddevice structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic resistance adjustment through a fan blade assembly where the number of engaged fan blades can be varied during operation. The drive shaft selectively engages different numbers of fan blades (e.g., 3, 5, or 7 blades) to provide variable resistance levels, allowing the device to adapt to different user strengths and exercise intensities without requiring multiple fixed resistance mechanisms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The exercise device is designed to perform multiple rowing routines including kayak paddling and traditional rowing motions. The handle assembly can be positioned in different orientations (e.g., 45-degree angles for kayaking, straight line for rowing) and the resistance mechanism accommodates various pulling patterns, making the device universal for different types of rowing exercises.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If rowing machines replicate multiple real-life rowing motions, then the versatility improves, but the device complexity and difficulty of operation increase

Engineering Contradiction:
Improveability to perform different rowing routinesVSAvoidease of switching between routines
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The handle assembly is designed with dynamic positioning capabilities, allowing it to be rotated and secured at different angles. For kayak paddling, the handle can be positioned at 45-degree angles on opposite sides, while for traditional rowing, it can be positioned in a straight line. This dynamic adjustment enables users to switch between different rowing routines by simply repositioning the handle rather than changing entire mechanical configurations.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The device separates the resistance mechanism from the handle positioning system. The fan blade resistance mechanism remains fixed and simple, while the handle assembly is segmented and independently adjustable. This segmentation allows users to change handle orientation for different routines without affecting the resistance mechanism, maintaining ease of operation while providing versatility.

Inventive Principle:
Principle #1Segmentation

3Measurement precision

If rowing machines provide accurate motion translation for digital displays, then the measurement precision improves, but the device complexity increases

Engineering Contradiction:
Improveprecision of motion translationVSAvoidcomplexity of motion sensing system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical motion translation mechanisms with electronic motion sensing. Motion sensors (such as accelerometers, gyroscopes, or magnetic sensors) are integrated into the handle assembly to detect handle position, velocity, and acceleration. These electronic sensors directly communicate with a display system, eliminating the need for complex mechanical linkages and providing high measurement precision with reduced mechanical complexity.

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

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 exercise assembly provides a versatile platform for users to perform diverse rowing routines that closely mimic real-life motions, with adjustable resistance and digital feedback, enhancing user experience and fitness tracking capabilities.

Implementation Method 1

The chamber is at least partially filled with air and the resistance device is structured to resist rotation within the chamber due to interaction with the air within the chamber

Methodology Applied
Scientific EffectAir resistance: Drag

Data Source

PatentUS10155131B2Exercise assembly for performing different rowing routines
Publication Date: 2018.12.18 COREYAK LLC
  • US10155131B2 patent drawing
  • US10155131B2 patent drawing
  • US10155131B2 patent drawing

AI summary

An exercise assembly structured to perform different rowing routines characterized different rowing motions. A resistance device is movable within a chamber and is cooperatively structured therewith to resist such movement. A drive assembly includes two drive sections each independently connected in driving relation to said resistance device. A connector structure includes two connector members each attached to a handle and connected in driving relation to a different one of said drive sections. The handle is selectively movable through the plurality of different rowing motions, at least one of which results in the two drive sections concurrently driving the resistance member and being concurrently driven by the two connector members. At least one other rowing motion of the handle is defined by each drive section alternately driving the resistance member and being alternately driven by interconnected ones of said connector members.