Weighted Bag Handle Assembly for Uniform Loading Stability
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Solution Overview
Problem
Existing flexible weightlifting devices experience unpredictable forces and non-uniform loading due to their flexible nature, and coupling handles to these devices often leads to deterioration and failure at stress concentrations.
Innovation Solution
A weighted bag design featuring a cylindrical shell with a handle assembly and a filling mechanism, including a flexible funnel for easy filling and a secure closure system, which allows for uniform loading and reduces stress concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible bag is used for weightlifting, then the device can be manipulated and shaped dynamically, but unpredictable forces and non-uniform loading occur
Solution Approach 1:
The patent employs a flexible bag constructed from multiple panels joined by seams, creating a controlled flexible structure that can be manipulated while maintaining predictable force distribution through its geometric design and panel configuration
Solution Approach 2:
The bag is designed with a generally spherical or polyhedral shape composed of multiple flat panels, which distributes stress more uniformly across the structure during manipulation, reducing unpredictable force concentrations compared to irregular flexible forms
2Ease of operation
If a handle is coupled to the flexible bag, then the bag can be grasped and manipulated, but stress concentrations cause deterioration and failure at the coupling location
Solution Approach 1:
The handle assembly is segmented into multiple components including a handle body, attachment points, and reinforcement elements distributed across the bag surface, which distributes the stress of grasping across multiple locations rather than concentrating it at a single coupling point
Solution Approach 2:
The patent reinforces the areas where the handle attaches to the bag with additional material, stitching patterns, or structural elements at these specific locations, creating locally enhanced strength precisely where stress concentrations occur during grasping
3Weight of moving object
If filler material is added to the bag, then the weight can be adjusted, but the filling process is complex and time-consuming
Solution Approach 1:
The bag includes pre-configured filling mechanisms such as integrated funnels, opening/closing systems, and accessible ports that are prepared in advance, allowing filler material to be quickly added without complex assembly or preparation steps during the filling process
Data Source
AI summary
A weighted bag having an outer shell and a handle assembly. The outer shell has a plurality of panels and at least one of one of a pair of slots and a first end loop assembly and a second end loop assembly spaced apart from the first end loop assembly coupled to the plurality of panels. The handle assembly has a handle grasping member and a strapping assembly, the strapping assembly extending from the handle grasping member and interfacing with at least one of the pair of slots and the first and second end loop assemblies so as to couple the handle assembly to the outer shell.