Incremental Insert Dumbbell With Magnetic Weight Adjustment
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Solution Overview
Problem
Existing exercise weights often require multiple units to accommodate different weight levels, leading to bulkiness and strain due to protrusions and improper handle design, which interferes with form and increases fatigue.
Innovation Solution
A weight system with incremental magnetic or screwable inserts and an angled handle that allows for customizable weight adjustments, reducing strain and improving form by minimizing protrusions and accommodating various hand sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate weights are used to accommodate different weight levels, then weight customization is achieved, but excessive bulk is created and trips occur
Solution Approach 1:
The patent implements nesting by placing incremental weight inserts inside the hollow cavity of the dumbbell handle. Multiple weight inserts (e.g., 2.5 lbs, 5 lbs, 7.5 lbs) can be stacked within the same handle, allowing users to customize total weight by selecting different combinations of inserts. This eliminates the need for multiple separate dumbbell units, reducing bulk while maintaining weight customization capability.
2Volume of moving object
If weights with inserts are used to reduce bulk, then space is saved, but the design interferes with form and causes protrusions
Solution Approach 1:
The patent applies asymmetry by designing the handle with a non-uniform diameter that varies along its length. The handle is narrower at the ends and wider in the middle section where weight inserts are placed. This asymmetric design allows the weight inserts to be contained within the handle's midsection without protruding beyond the handle's overall轮廓, maintaining proper form during exercise while still enabling weight customization.
3Ease of manufacture
If standard handle design is used, then manufacturing is simple, but strain and fatigue increase in hands and wrists
Solution Approach 1:
The patent applies local quality by varying the handle's cross-sectional dimensions at different locations. The handle features a narrower grip section at the ends and a wider section in the middle. This local variation in geometry allows the weight inserts to be accommodated within the wider midsection while the narrower ends provide a comfortable, strain-reducing grip for the user's hands, addressing both manufacturing feasibility and user comfort.
4Productivity
If incremental weight inserts are added for progressive resistance, then muscle growth is enhanced, but device complexity increases
Solution Approach 1:
The patent implements segmentation by dividing the total weight into discrete, removable inserts (e.g., 2.5 lbs, 5 lbs, 7.5 lbs). Each insert is a separate component that can be independently placed into or removed from the handle's hollow cavity. This segmentation allows users to easily adjust weight in small increments for progressive resistance training, while the modular nature of the inserts keeps the overall system simple and manageable.
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
Enables gradual resistance increases, reduces strain on hands and wrists, and optimizes workout performance by ensuring proper form, while also saving space and providing customizable weight options for diverse users.
Implementation Method 1
The incremental weight inserts are either magnetically attached or screwed into a single base
Data Source
AI summary
The present invention is an exercise weight with incremental weight inserts. The ends of the weight will be hollow to fit the different weighted inserts inside. The weighted inserts are screwed in and stay in place with magnets. The handle of the weight will be oval shaped and tapered down to fit the natural grip of the hand. The weighted inserts will be a different weight on each side of the dumbbell to maintain the same overall weight percentage, starting with either a ¼th pound or .25 kg insert. The weights will come in different sizes for men and for women due to the differences in sizes of men's and women's hands. With the incremental weight inserts and the angled and narrowing handle, the user will be able to have a safe and effective workout.