Adjustable Construction Square Wedge Clamping Mechanism
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Solution Overview
Problem
Existing adjustable construction squares, such as the Patterson U.S. Pat. No. 4,525,933 T-square, are unable to measure angles in certain situations, like the top of a ceiling, and fail to maintain the measured angular position due to lack of proper tightening, causing the tool to move away from the measured position.
Innovation Solution
An adjustable construction square with an elongated blade and cross member featuring a clamping jig that includes a clamping device, wedge device, and arm, allowing secure angular positioning and preventing movement from bumps, along with contoured ends for accurate measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the Patterson adjustable T-square is used for angular measurements, then the cross member can be adjusted to various angular positions, but the tool cannot be tightened properly to maintain the measured position and moves away when bumped
Solution Approach 1:
The clamping jig incorporates a wedge device that converts rotational motion of the handle into linear clamping force, creating a dynamic locking mechanism that maintains the cross member at any angular position. The wedge geometry provides mechanical advantage, allowing the user to apply sufficient clamping force to prevent movement while maintaining adjustability.
Solution Approach 2:
The clamping jig acts as an intermediary mechanism between the user's manual adjustment and the final locked position. It includes a handle that rotates within a slot, connected to a wedge device that applies clamping force to the blade, serving as a mediator that transforms simple rotational motion into effective angular positioning and locking.
2Ease of operation
If the Patterson adjustable T-square is designed with simple adjustment mechanism, then it is easy to operate, but it cannot measure angles in certain situations like the top of a ceiling
Solution Approach 1:
The tool is segmented into distinct functional components: the blade, the cross member, and the clamping jig with handle and wedge device. This segmentation allows the cross member to be independently adjusted and locked at various angles while maintaining a simple overall structure. The contoured ends are also segmented features that provide specific measurement capabilities.
Solution Approach 2:
The adjustable construction square is designed with universal applicability through its adjustable cross member that can be positioned at any angle and securely locked. The clamping jig with its rotating handle and wedge mechanism provides a universal locking solution that works for all angular measurements, making the tool versatile for various construction applications including ceiling measurements.
3Adaptability or versatility
If the cross member is made adjustable to various positions along the blade, then the tool becomes more versatile, but the device complexity increases
Solution Approach 1:
The clamping jig serves as an intermediary mechanism that simplifies the adjustment process. The handle rotating within a slot provides an intuitive interface for the user, while the wedge device translates this simple rotational motion into effective clamping force. This intermediary mechanism masks the complexity of the adjustable joint, presenting a simple rotary adjustment to the user.
Solution Approach 2:
The wedge device in the clamping jig provides self-locking functionality. Once the handle is rotated to the desired position and the wedge engages, the mechanism maintains the position without requiring additional components or active control. The wedge geometry itself provides the locking action, making the adjustment mechanism self-sufficient and reducing overall complexity.
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 angle measurements in previously inaccessible areas, such as the top of a ceiling, and maintains the measured position securely, addressing the limitations of existing tools by providing a rugged and cost-effective solution for the construction industry.
Implementation Method 1
The clamping jig includes a clamping device, a wedge device, and an arm that work in combination to secure the adjustable construction square in a desired position
Data Source
AI summary
An adjustable construction square is provided that comprising an elongated blade member and an elongated cross member. An end of the cross member has a contour, and an end of the blade member has a contour. The adjustable construction square includes a clamping jig that enables the construction square to be quickly secured into a desired angular position. The clamping jig includes a clamping device, a wedge device, and an arm that work in combination to secure the adjustable construction square in a desired position.