Non-Stretchable Soft Strap with Closed Loop Retainers
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Solution Overview
Problem
Existing stretching devices are either made of stretchable materials that may cause skin irritation or fatigue, or they are not capable of being folded in on themselves to effectively stretch various body parts.
Innovation Solution
A soft stretching apparatus made of non-stretchable materials like cotton, terry cloth, wool, or neoprene, featuring closed loop retaining members at both ends that allow the cloth to be folded and wrapped around body parts for effective muscle stretching without causing skin irritation or grip fatigue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If stretchable elastic material is used for the strap, then the strap can be folded and wrapped around body parts, but it may cause skin irritation and grip fatigue
Solution Approach 1:
The patent changes the material parameter from stretchable elastic material to non-stretchable soft material. This parameter change maintains the ability to wrap around body parts while eliminating the harmful effects of skin irritation and grip fatigue associated with elastic materials.
Solution Approach 2:
The patent uses a soft non-stretchable material that can be folded and wrapped around body parts. The material's flexibility allows it to conform to body contours while its non-stretchable nature prevents the harmful effects of elastic materials.
2Object-affected harmful factors
If non-stretchable material is used for the strap, then skin irritation and grip fatigue are prevented, but the strap cannot be folded in on itself to stretch various body parts
Solution Approach 1:
The patent changes the material parameter from stretchable to non-stretchable, which prevents skin irritation and grip fatigue. The retained foldability is achieved through the material's softness and flexibility rather than elasticity.
Solution Approach 2:
The soft non-stretchable material acts as a flexible film that can be folded and wrapped around various body parts. The flexibility comes from the material's softness rather than elastic stretch, preventing harmful effects while maintaining adaptability.
3Reliability
If closed loop retaining members are added to the ends of the strap, then the strap can be securely retained on body parts, but the device complexity increases
Solution Approach 1:
The patent merges the retaining function with the strap material itself by creating closed loops from the same soft non-stretchable material. This integration maintains secure retention while minimizing device complexity by using a single material component rather than separate fastening mechanisms.
Solution Approach 2:
The closed loop retaining members serve multiple functions: they provide secure retention on body parts, prevent the strap from slipping, and maintain the structural integrity of the device. This multi-functionality reduces the need for additional components.
Data Source
AI summary
A soft stretching apparatus made of cotton, terry cloth, wool, felt or non-stretchable neoprene. The stretching apparatus includes a length of cloth having a first end and a second end with a first retaining member affixed at the first end of the length of cloth and having a fixed circumferential frame enclosing a first opening between the frame and the first end of the length of cloth, and the cloth having a second end with a second retaining member affixed at the second end of the length of cloth and having a fixed circumferential frame enclosing a second opening between the frame and the second end of the length of cloth.