Marked Tube Bending Guide for Dog-Leg Alignment Control
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Solution Overview
Problem
Current methods for bending conduits or tubes often result in misalignment, known as 'dog-legging', leading to difficulties in fitting them into desired spaces and resulting in waste due to the inability to accurately judge and form proper bends, especially for inexperienced users.
Innovation Solution
A marked guide with a bendable core and elastomeric outer layer featuring markings at 0, 90, 180, and 270-degree intervals, allowing for precise alignment and retention of bent shapes, which can be reused to guide the bending of conduits or tubes into specific shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If visual estimation and measurement are used to determine bend directions and amounts, then the bending process can be performed without specialized equipment, but alignment accuracy deteriorates leading to dog-legging and waste
Solution Approach 1:
The patent introduces a marked conduit or tube as an intermediary tool between the worker and the bending process. The markings serve as a visual mediator that translates spatial relationships into easily observable indicators, allowing workers to achieve precise alignment without requiring advanced measurement equipment or expertise.
Solution Approach 2:
The patent employs color-coded markings (different colors for different bend angles and positions) to provide immediate visual feedback during the bending process. This color-based system allows workers to quickly identify the correct bend configuration without complex measurements, significantly improving alignment accuracy while maintaining ease of operation.
2Adaptability or versatility
If multiple bends are formed in conduits or tubes to fit specific spaces, then the conduits can be customized to environmental requirements, but misalignment increases leading to dog-legging and disposal
Solution Approach 1:
The patent applies preliminary action by pre-marking the conduit with bend angle and position indicators before the bending process begins. These markings are applied in advance and remain visible throughout the bending operation, guiding each subsequent bend to maintain proper alignment and prevent dog-legging even as multiple bends are formed.
Solution Approach 2:
The marked conduit provides continuous visual feedback during the bending process. As each bend is formed, the worker can observe the markings to verify proper alignment and make real-time adjustments, ensuring that multiple bends remain consistent and properly aligned throughout the entire process.
3Ease of operation
If inexperienced users or trainees perform conduit bending, then more personnel can be involved in the work, but error rates increase due to inability to judge proper bends
Solution Approach 1:
The marked conduit enables self-service by providing all necessary alignment information directly on the conduit itself. Inexperienced users can independently perform bending operations by following the visual markings without requiring supervision or advanced knowledge, making the process self-explanatory and reducing error rates.
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
The marked guide reduces misalignment errors and minimizes waste by providing a visual aid for proper bend alignment, enabling accurate fitting of conduits or tubes into various spaces and allowing for multiple bends without breaking, thus enhancing the efficiency of conduit or tube bending operations.
Implementation Method 1
The marked guide includes a body including a core and at least one layer of elastomeric or resiliently flexible material provided around the core
Data Source
AI summary
A marked guide includes an elongated body having a bendable core with a length dimension and made of material that is bendable along the length dimension to selectively form various bent shapes, and that retains the bent shapes without external support. The elongated body also has at least one layer of second material provided around the core, the second material being elastomeric or resiliently flexible. An outer surface of the body has a plurality of markings, including a first line marking positioned at a 0-degree point, a second line marking positioned at a 90-degree point, a third line marking positioned at a 180-degree point and a fourth line marking positioned at a 270-degree point.