Center-Mass Adjustable Dumbbell Assembly With Nested Weight Capture
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Solution Overview
Problem
Traditional weight structures, such as dumbbell sets with fixed weights, require multiple purchases to accommodate varying workout needs, increasing cost and storage space, and existing adjustable dumbbells suffer from complexity and instability.
Innovation Solution
An adjustable center-mass weight assembly with a rotatable handle and cradle system that allows easy weight adjustment, featuring a mechanism for adding or removing weights during use, providing a stable and user-friendly solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple fixed-weight dumbbells are purchased to accommodate varying workout needs, then weight adaptability is improved, but cost and storage space increase
Solution Approach 1:
The patent implements nesting by placing multiple weight plates of different weights inside a single dumbbell handle structure. The weight plates are stacked concentrically within the handle, allowing multiple weights to occupy the same spatial footprint. This resolves the contradiction by providing weight adaptability through nested components rather than separate dumbbells, significantly reducing storage space requirements.
Solution Approach 2:
The patent creates a universal dumbbell system where a single handle can accommodate multiple weight plates of varying weights. The handle is designed with a universal interface that can hold different combinations of weight plates, making one dumbbell perform the function of multiple fixed-weight dumbbells. This multi-functionality approach resolves the contradiction by enabling weight adaptability without requiring multiple separate devices.
2Adaptability or versatility
If adjustable dumbbell mechanisms are added to allow weight modification, then weight adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamics by making the dumbbell system adjustable and reconfigurable. The handle can dynamically change its weight configuration by adding or removing weight plates during use. This dynamic adaptability allows the same physical object to transform its properties (weight) without requiring complex mechanical adjustments, resolving the contradiction between weight adjustability and device complexity.
Solution Approach 2:
The patent segments the dumbbell into separate functional components: a handle and multiple interchangeable weight plates. This segmentation allows the weight portion to be independently adjusted without affecting the handle structure. By dividing the system into modular segments, the patent achieves weight adaptability while keeping each individual component simple, thus resolving the contradiction with device complexity.
3Adaptability or versatility
If complex adjustment mechanisms are implemented for weight modification, then weight adaptability is improved, but reliability decreases
Solution Approach 1:
The patent implements self-service by allowing the user to easily add or remove weight plates from the handle without requiring complex locking mechanisms or tools. The design enables straightforward weight modification through simple placement and removal actions, reducing mechanical complexity and potential failure points. This self-service approach resolves the contradiction by achieving weight adaptability through simple, reliable user actions rather than complex automated or mechanical systems.
Data Source
AI summary
The present invention relates to an adjustable center-mass weight assembly including a plurality of substantially concentric weights engaged by one or more capturing rods which can be extended from or retracted into a rotatable handle. As the handle is rotated in a first direction, the rods extend through consecutive weights to add weight and by rotating the handle in a second direction weight can be removed from the weight package. The weights can come in a variety of shapes but preferably they will be in the shape of cylinders, squares, or hexagons, for example, such that by disposing the handle across a central axis the weight can be centered.