Weight Modification Clamp for Precise Dumbbell Adjustments
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Solution Overview
Problem
Existing weightlifting equipment, such as dumbbells and barbells, lack the ability to make precise weight adjustments, particularly for small increments less than 5 pounds, and existing solutions are often complex, not universally compatible, or prone to wear and damage.
Innovation Solution
A weight modification clamp with pivotally connected plates that define a central opening, allowing for adjustable diameter to fit various bar sizes, and a tensioning mechanism to securely retain the clamp on the bar, providing weights in increments between 0.5 and 3 pounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional loading sleeves or fixed weight devices are used, then weightlifting equipment provides standard weight increments (5 pounds or more), but the ability to make precise small weight adjustments (less than 5 pounds) is lost
Solution Approach 1:
The clamp is designed to fit over existing bars and integrate with conventional weightlifting equipment. The tensioning member is received within a recess of the clamp body, creating a nested structure that allows the precision adjustment mechanism to be incorporated into the existing equipment without requiring complete replacement of the bar or loading system.
Solution Approach 2:
The clamp acts as an intermediary device between the existing bar/loading sleeve system and the user's need for precise weight adjustments. By placing the clamp over the bar and using the tensioning member to apply controlled force, the system enables small weight increments (less than 5 pounds) without requiring modification of the original equipment architecture.
2Adaptability or versatility
If add-on weight members are used to provide smaller weight increments, then weight adjustment flexibility improves, but the device becomes specifically configured for particular dumbbell sizes and awkward for many exercises
Solution Approach 1:
The clamp is designed with a universal interface that fits over standard bars used in various weightlifting equipment including dumbbells, barbells, and kettlebells. The tensioning member mechanism provides adjustable weight increments while maintaining a compact profile that does not interfere with proper grip or exercise form, making it suitable for multiple exercise types.
3Ease of operation
If elastic or flexible material devices are used to fit around bars of specific diameters, then the device can be installed on the bar, but it cannot be used with bars having different diameters and is prone to wear and damage
Solution Approach 1:
The clamp incorporates a dynamic tensioning mechanism that allows adjustment of the clamping force. The tensioning member can be moved to different positions within the recess to accommodate bars of varying diameters, providing both ease of installation and adaptability. The rigid construction with movable tensioning component reduces wear compared to continuously deformed elastic materials.
4Weight of moving object
If U-shaped add-on weight members are used to attach to dumbbells, then additional weight can be added, but the configuration creates awkward positioning and is not suitable for various exercises
Solution Approach 1:
The clamp is segmented into distinct functional components: the clamp body that provides the weight addition, the tensioning member for secure attachment, and the recess that houses the tensioning mechanism. This segmentation allows for a compact design that adds weight without creating awkward protrusions, maintaining proper balance and ergonomics for various exercises.
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 precise weight adjustments with minimal space impact on the bar, ensuring secure attachment and reducing wear, suitable for a range of weightlifting devices, including dumbbells, barbells, and kettlebells.
Implementation Method 1
a tensioning member coupled to the first and second plates and configured to tension the first and second plates against the bar
Data Source
AI summary
A weight modification clamp comprises first and second hingedly connected plates configured to be coupled to a bar of a weight-lifting device, such as a dumbbell, barbell or a kettlebell. First end portions of the first and second plates are pivotably connected and movable about a rotational axis so that opposing second end portions of the first and second plates are movable between a closed orientation and an open orientation and along a plane substantially perpendicular to the rotational axis. The first and second plates define a central opening configured to receive and retain the bar therein.