3D Ruler Assembly With Step Surfaces for Tactile Measurement
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Solution Overview
Problem
Conventional rulers and tape measures are limited in measuring multiple dimensions and small increments, often requiring visual alignment which can be inaccurate, and the crimping hook can interfere with precise measurements.
Innovation Solution
A three-dimensional ruler assembly with multiple planes of reference surfaces, including step surfaces and measurement elements, allowing for precise tactile measurements and easy alignment, and a removable insert ruler with magnetic coupling for enhanced usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional ruler with a single plane is used, then the device complexity is low, but the measurement precision is limited to two dimensions
Solution Approach 1:
The patent transitions from a conventional two-dimensional ruler to a three-dimensional ruler assembly with multiple measurement planes (top, side, and end planes). This dimensional expansion enables simultaneous measurement in multiple directions, resolving the contradiction by adding measurement capability without excessive complexity through a modular nested design.
Solution Approach 2:
The ruler is divided into separate functional components including an outer ruler body and an inner removable ruler. This segmentation allows each component to serve specific measurement functions while maintaining overall structural simplicity, enabling multi-dimensional measurement without proportionally increasing device complexity.
2Measurement precision
If visual alignment is used for measurement, then the ease of operation is high, but the measurement precision is inaccurate
Solution Approach 1:
The patent introduces tactile intermediaries in the form of stepped surfaces and alignment features that physically guide the measurement process. These intermediaries provide tactile feedback and mechanical alignment, serving as a mediator between the user and the measurement target, thereby improving precision without significantly complicating operation.
Solution Approach 2:
The patent replaces purely visual alignment with a hybrid system incorporating tactile mechanical feedback through stepped surfaces and physical contact points. This substitution of visual-only methods with tactile-mechanical guidance improves measurement precision while maintaining ease of operation through intuitive physical interaction.
3Ease of operation
If a crimping hook is added to a tape measure, then the ease of operation is improved for hooking onto surfaces, but the measurement precision is interfered with
Solution Approach 1:
The patent removes the crimping hook element from the measurement system entirely, replacing it with a flat edge design. This extraction of the problematic hook component eliminates the interference it caused with measurement precision while preserving ease of operation through the ruler's ability to rest flat on surfaces and be positioned using tactile feedback from stepped surfaces.
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 accurate measurements across multiple dimensions and small increments, improving precision and ease of use by utilizing tactile feedback and minimizing interference from the crimping hook.
Implementation Method 1
the means for removably coupling the ruler assembly to the insert ruler comprises a magnetic element coupled to the cavity of the ruler assembly and a mating insert magnetic element coupled to the insert ruler
Data Source
AI summary
A ruler assembly comprising a ruler having a top extending along a ruler width and a ruler length. The top has an inner top surface and an outer top surface. The assembly has at least one side wall extending along the ruler length. The side wall extends from a side wall bottom edge to a side wall top edge proximal to the outer top surface. The outer top surface comprises a plurality of step surfaces, each having a step height measured from the side wall bottom edge to the side wall top edge of each of the plurality of step surfaces. In some embodiments, the inner top surface and the inner side wall surface define a ruler cavity configured to removably couple to an insert ruler.