Variable-Mass Dumbbell Hub for Fast Weight Changes

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Solution Overview

Problem

Existing dumbbell systems require significant time and effort to change the attached mass, and traditional gyms pose a risk for the transmission of respiratory illnesses, necessitating compact and versatile strength training solutions.

Innovation Solution

Dumbbell systems with incrementally-variable mass, including grip, weight-engagement devices, and weight plates that allow easy adjustment of mass, and telescoping designs for expandable weights, along with barbell integration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional dumbbell systems with removable cuffs or complicated mechanisms are used, then a wide variety of weights can be achieved, but considerable time and effort are required to change the mass between sets and exercises

Engineering Contradiction:

Improveweight varietyVSAvoidtime to change mass

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The dumbbell incorporates a dynamic weight selection mechanism where weight plates can be quickly attached and detached from a central hub. The hub features multiple engagement ports that allow rapid switching between different weight configurations without requiring complex mechanisms or excessive manual effort, thus reducing the time to change mass while maintaining weight variety.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The weight system is segmented into separate weight plates that can be independently selected and attached to the dumbbell hub. This segmentation allows users to quickly组合 different weight plates to achieve various masses, making the weight change process faster and more efficient compared to monolithic weight adjustment mechanisms.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If traditional gyms with sprawling arrays of dumbbells and barbells are used, then comprehensive strength training equipment is available, but the high turnover of clientele presents an exceptionally risky environment for the transmission of upper respiratory illnesses

Engineering Contradiction:

Improvetraining capabilityVSAvoidillness transmission risk

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The dumbbell is designed as a universal, multi-functional piece of equipment that can perform various strength training exercises. By consolidating multiple weight options and functionality into a single compact unit, users can maintain comprehensive training capability without needing to visit traditional gyms, thus eliminating the illness transmission risk associated with high-turnover gym environments.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention extracts the essential weight adjustment and training functionality from the complex gym environment and integrates it into a single portable dumbbell unit. This extraction allows users to perform strength training exercises at home or in private spaces, removing them from the risky social environment of public gyms while retaining full training capability.

Inventive Principle:

Principle #2Taking out (Extraction)

3Volume of moving object

If compact dumbbell systems are designed for home or office use, then the equipment fits easily and unobtrusively in limited spaces, but the system must still afford a wide variety of weights for broad range of exercises

Engineering Contradiction:

Improvesystem sizeVSAvoidweight range

Core Design Contradiction:

Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The dumbbell hub features a nested structure where multiple weight plates can be stored within or around the central hub in a compact arrangement. The weight plates are arranged in concentric circles or stacked configurations that maximize space efficiency, allowing a wide variety of weights to be stored in a compact footprint that fits easily in home or office spaces while maintaining full weight range versatility.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS20260014412A1Variable Mass Dumbbell Systems

Publication Date: 2026.01.15 GYM IN A BOX LLC

AI summary

A dumbbell system for exercising with an incrementally-variable mass of weights, includes a grip comprising a handle portion optionally enclosing a pin-receiving portion; a weight-engagement device having a first end opposite a second end, comprising a plurality of weight-engagement ports dispersed between the first end and the second end, each weight-engagement port in the plurality of weight-engagement ports being configured to receive a weight-retaining pin;a first plurality of weight plates, each weight plate in the first plurality of weight plates comprising at least one grip-engagement port configured to also receive the weight-retaining pin, wherein each of the at least one grip-engagement port is adapted to align with a weight-engagement port in the plurality of weight-engagement ports;wherein the plurality of weight plates provides the incrementally-variable mass of weights.