Loadable Dumbbell Bumper Weight Nesting

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Solution Overview

Problem

Existing loadable dumbbells face challenges in accommodating larger and heavier weights while maintaining a compact form factor, particularly when using bumper plates and weights.

Innovation Solution

A loadable dumbbell system comprising a central shaft and opposing sleeves with bumper weights that include a core and a bumper portion, where the bumper weight can be slid over the sleeves, featuring an inner stop bore and outer sleeve portion configuration to securely attach and distribute weight evenly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If bumper weights are used with loadable dumbbells, then weight capacity and versatility are improved, but the form factor becomes larger and less compact

Engineering Contradiction:

Improveweight capacityVSAvoidform factor

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The bumper weight is designed with a hollow cylindrical core that receives and nests the dumbbell sleeve within its central bore. This nesting arrangement allows the bumper weight to enclose the sleeve while maintaining a compact overall form factor, as the weight distributes around the sleeve rather than extending beyond it in all directions.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The bumper weight utilizes the radial dimension by distributing weight material around the central bore in an annular configuration. This allows the weight to achieve high weight capacity by utilizing the circumferential space around the sleeve, rather than extending axially or radially in a single direction, thus maintaining compactness while increasing weight.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If bumper weights are used with loadable dumbbells, then weight capacity is improved, but attachment security becomes problematic

Engineering Contradiction:

Improveweight capacityVSAvoidattachment security

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The bumper weight core includes a protrusion that extends beyond the central bore, which is designed to engage with a corresponding recess in the dumbbell sleeve before final attachment. This preliminary engagement action ensures proper alignment and prevents the weight from slipping off during use, thereby securing the attachment reliably.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The interface between the bumper weight and dumbbell sleeve includes intermediate features such as the protrusion-recess engagement and bearing surfaces that mediate the connection. These intermediate elements distribute loads and provide mechanical interlocking, ensuring secure attachment while accommodating manufacturing tolerances.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If larger weights are accommodated, then weight capacity is improved, but the dumbbell structure becomes more complex

Engineering Contradiction:

Improveweight capacityVSAvoidstructure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bumper weight core is designed as a universal interface that can accommodate different sized dumbbell sleeves through the standardized central bore and protrusion-recess engagement. This multi-functional design allows the same bumper weight structure to work with various dumbbell configurations, reducing overall system complexity while maintaining high weight capacity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11154744B2Loadable dumbbell assembly and bumper weights for a loadable dumbbell

Publication Date: 2021.10.26 COULTER VENTURES LLC

AI summary

A combination loadable dumbbell and bumper weight including a loadable dumbbell having a central shaft and opposing sleeves. At least one bumper weight having a core and a bumper portion surrounding the core is provided. The core has a central bore. The at least one bumper weight can be slid over one of the opposing sleeves so that the opposing sleeve is directed into the central bore.