Portable Window Frame Deflection Measurement Device
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Solution Overview
Problem
Current tools lack convenience, portability, and accuracy for measuring deflection in large vertical surfaces like window frames, requiring multiple individuals to hold and measure deflection over long spans, and do not allow for simultaneous measurement of multiple points.
Innovation Solution
A portable measurement device with an elongate frame and adjustable reference assemblies, a centrally located gauge, and expansion sleeves that can be calibrated without re-calibration, allowing single-handed operation and simultaneous measurement of multiple points along a surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional bubble levels are used to measure deflection, then level and plumb determination is achieved, but quantification of deflection is not possible
Solution Approach 1:
The patent combines multiple measurement functions into a single device: the rigid beam incorporates both bubble levels for orientation verification and a displacement gauge for deflection quantification. This integration allows simultaneous determination of level/plumb status and measurement of deflection magnitude, resolving the contradiction between measurement precision and ease of operation.
Solution Approach 2:
The measurement device serves multiple functions: it acts as a traditional bubble level for orientation checking, a displacement gauge for deflection measurement, and an extended measurement tool through telescopic sections. This multi-functionality enables both qualitative (level/plumb) and quantitative (deflection amount) assessments with one device.
2Length of stationary object
If multiple individuals are used to hold and measure deflection over long spans, then measurement coverage is improved, but operational efficiency decreases
Solution Approach 1:
The device incorporates telescopic extensions that can be added or removed to achieve different measurement spans. This segmentation allows a single operator to adjust the beam length to match the specific measurement requirement, eliminating the need for multiple individuals while maintaining measurement coverage for both short and long spans.
Solution Approach 2:
The telescopic sections provide dynamic adjustability in beam length, allowing the device to adapt to various span requirements. This dynamic configuration enables one person to efficiently measure deflection across different distances without requiring additional personnel.
3Measurement precision
If traditional levels are used, then orientation checking is possible, but simultaneous measurement of multiple points is not enabled
Solution Approach 1:
The beam is divided into telescopic sections that can be independently positioned at different locations along the surface being measured. Each section maintains the measurement capabilities, allowing simultaneous or sequential measurement at multiple points without requiring separate devices, thus enabling multi-point measurement while managing complexity through modular design.
4Length of stationary object
If telescopic extensions are added to increase measurement span, then coverage of large surfaces is improved, but device complexity increases
Solution Approach 1:
The telescopic extensions are designed to nest within the main beam body when not in use, and slide out or attach sequentially when needed. This nested configuration minimizes storage space and simplifies transport, while allowing the measurement span to be extended as needed without permanently increasing device complexity.
Data Source
AI summary
A portable device for measuring a deflection of a surface, comprising an elongate frame having a first end and a second end and a first datum surface, a first removable reference support adjacent the first end, a second removable reference support adjacent the second end, a deflection gauge attached to the elongate frame between the first removable reference support and the second removable reference support, and wherein the deflection gauge engages and measures a deflection of the surface relative to the first removable reference support and the second removable reference support.