Tape Measure Locking Wedge for Inside Dimension Transfer
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Solution Overview
Problem
Traditional tape measures are cumbersome for accurately measuring inside dimensions due to the housing obstructing the measurement and require users to interpret complex markings, leading to potential errors in measurement recall and communication.
Innovation Solution
A device attachable to a tape measure featuring a base member with a housing and elastomeric gripping layer, along with a movable pressure locking wedge, allows for secure locking of the tape without needing to reference measurement indicia, enabling precise measurement and transfer of dimensions without relying on tape markings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional tape measure markings are used, then measurement information can be displayed, but measurement precision deteriorates due to user error in reading and communicating the values
Solution Approach 1:
The patent creates a physical copy of the measurement value by locking the tape at a specific position. Instead of relying on the user to read and remember the numerical marking, the locked tape position serves as a tangible copy of the measurement that can be directly transferred to the workpiece without requiring the user to communicate or recall the value.
Solution Approach 2:
The locking mechanism acts as an intermediary between the tape measure and the workpiece. It allows the measurement to be transferred directly from the tape to the workpiece through the locked position, eliminating the need for the user to manually communicate or recall the measurement value.
2Adaptability or versatility
If the tape measure housing is extended to measure inside dimensions, then measurement capability is improved, but ease of operation deteriorates due to the housing obstructing the measurement and requiring complex adjustments
Solution Approach 1:
The patent separates the measurement function from the housing structure. By using a locking mechanism that engages with the tape independently of the housing, the system allows the tape to be locked at any position regardless of the housing's presence, simplifying the measurement operation for inside dimensions.
Solution Approach 2:
The locking mechanism automatically holds the tape at the measured position without requiring the user to manually mark or measure additional adjustments for the housing length. The system self-corrects by locking the tape directly at the desired measurement point.
3Reliability
If the tape is locked securely to prevent movement, then measurement reliability is improved, but device complexity increases due to the additional locking mechanism
Solution Approach 1:
The locking function is extracted as a separate, simple mechanism from the main tape measure body. The locking mechanism can be implemented as a basic latch or wedge that engages with the tape, providing reliable locking without requiring complex electronic or mechanical systems.
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 solution provides a reliable and accurate method for measuring both inside and outside dimensions, reducing errors and frustration associated with traditional tape measures by locking the tape in place, allowing users to easily transfer measurements without referencing tape markings.
Implementation Method 1
an elastomeric gripping layer positioned in the housing, positioned to contact a face of the tape when the tape is locked in a given position during use
Implementation Method 2
A movable pressure locking wedge may be provided, positioned within the housing so that the tape is pinchable between the pressure locking wedge and another surface without damaging the tape
Data Source
AI summary
A measurement device includes first and second measurement indicia. First indicia (e.g., on the tape) may include numerals regularly spaced to mark inches or other units of length (e.g., 1, 2, 3, etc.). Also included are second indicia, that are non-numeric (e.g., letters, such as A, B, C, etc.) where the second indicia are regularly spaced to mark fractions of inches or other units of length indicated by the first indicia. The second indicia are positioned between adjacent first indicia. For example, the letters (A, B, C, etc.) may be spaced every sixteenth or other fraction of an inch between the “1” and “2” (adjacent first indicia). Where sixteenths are used, the letters A-O are equally spaced, between the adjacent first indicia (e.g., between the “1” and the “2”). The A-O may repeat between each integral number—between “1” and “2”, between “2” and “3” and so forth.