Dual Hook Tape Rule Assembly for Dual-Surface Measurement
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Solution Overview
Problem
Existing tape rule assemblies lack an efficient mechanism for secure attachment and measurement on both surfaces of an object, particularly with limited movement and additional surface area for engagement, which affects accuracy and usability.
Innovation Solution
The tape rule assembly features a dual hook mechanism with a permanent end hook and a removably attachable end hook member, providing increased surface area for engagement and limited movement to accommodate measurements on both surfaces, along with a magnet assembly for secure attachment to metal objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single end hook is used on the tape rule blade, then the structure is simple, but the measurement capability is limited to one surface only
Solution Approach 1:
The tape rule blade is equipped with both a permanent end hook and a removably attachable end hook, allowing the same blade to perform measurements on both single and dual surfaces. The removable hook can be attached or detached based on measurement requirements, providing multi-functionality without permanently increasing complexity.
Solution Approach 2:
The hook system is divided into a permanent end hook that is always attached to the blade and a removably attachable end hook that can be added when needed. This segmentation allows the measurement capability to be expanded only when required, maintaining simplicity for basic single-surface measurements while enabling dual-surface measurement capability when needed.
2Area of stationary object
If a removably attachable end hook member is added to provide additional surface area, then engagement capability is improved, but attachment mechanism complexity increases
Solution Approach 1:
The second hook portion is designed to move between extended and retracted positions relative to the blade, allowing dynamic adjustment of engagement surface area. This movement capability enables the hook to accommodate measurements on both surfaces of workpieces while maintaining a compact form when not in use.
Solution Approach 2:
The removably attachable end hook member is designed to attach to the permanent end hook, with the second hook portion nesting alongside the first hook portion. This nested configuration maximizes engagement surface area when attached while minimizing the overall profile when the removable hook is not in use.
3Adaptability or versatility
If the second hook portion is made movable to accommodate material thickness, then measurement flexibility is improved, but the attachment structure becomes more complex
Solution Approach 1:
The second hook portion is designed with limited movement capability relative to the blade, allowing it to adjust between extended and retracted positions. This dynamic adjustment accommodates variations in material thickness and enables measurements on both surfaces of workpieces without requiring a completely separate attachment structure.
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
Enhances measurement accuracy and usability by allowing secure attachment and measurement on both surfaces of an object with increased surface area engagement and magnetic attachment, improving the overall functionality of the tape rule assembly.
Implementation Method 1
along with a magnet assembly for secure attachment to metal objects
Data Source
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AI summary
Disclosed is a rule assembly having a housing, a reel rotatably mounted in the housing, an elongated blade wound on the reel and extendable through an opening in the housing, and a permanent end hook member attached to the elongated blade with a first hook portion. The rule assembly further has another or second end hook member that is removably attachable to the elongated blade with a second hook portion. Each of the permanent end hook member and second end hook member are capable of limited movement relative to the blade between an extended position and a retracted position. The second hook portion can extend in a direction opposite to that of the first hook portion. A forward surface of the second hook portion can be aligned with a forward surface of the first hook portion to form a larger surface area for engagement with a workpiece.