Integrally Molded Demolition Tool with Offset Pry Bar
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Solution Overview
Problem
Existing demolition tools are limited in their ability to handle materials of varying thicknesses, restrict motion due to other implements, and often consist of multiple parts, increasing cost and complexity while reducing strength.
Innovation Solution
A multi-functional demolition tool with a handle featuring a strike contact face, grasping jaws with steps and teeth, a chisel blade, a bent end pry bar, and a blunt blade edge, all integrally molded from metal, allowing for versatile demolition tasks without interference and accommodating different material thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate demolition tools are used to perform different functions, then each tool can be optimized for its specific function, but the overall device complexity and cost increase
Solution Approach 1:
The patent combines multiple demolition tool functions (grasping jaws, pry bar, chisel blade, blunt blade edge, strike contact face) into a single integrated head structure that attaches to one handle. This merging of previously separate tools into one unified device provides full functional versatility while reducing overall device complexity and eliminating the need for multiple separate tools.
Solution Approach 2:
The demolition tool head is designed with universal multi-functionality, where a single head structure incorporates five different functional elements (grasping jaws for various thicknesses, bent pry bar for fasteners, chisel blade for penetration, blunt blade edge for breaking, and strike contact face for hammering). This allows one tool to perform the work of multiple specialized tools.
2Adaptability or versatility
If a pry bar end is added to a demolition tool, then fastener removal capability is improved, but the range of motion is restricted due to interference from other implements
Solution Approach 1:
The pry bar element is positioned asymmetrically on the head structure, specifically oriented perpendicular to the plane formed by the grasping jaws and chisel blade. This asymmetric positioning allows the pry bar to extend laterally without interfering with the forward motion of the other implements, maintaining full range of motion while adding fastener removal capability.
Solution Approach 2:
The pry bar is positioned in a different spatial dimension (perpendicular plane) relative to the other implements on the head. By extending the pry bar laterally rather than forward, it operates in a separate dimensional space that avoids interference with the grasping jaws, chisel blade, and blunt blade edge during their forward striking or penetrating motions.
3Adaptability or versatility
If grasping jaws without steps are used, then the structure is simpler, but materials of different thicknesses cannot be accommodated
Solution Approach 1:
The grasping jaws incorporate steps (local variations in height) on the jaw surfaces, creating multiple gripping levels at different heights. This local quality variation allows the jaws to accommodate materials of different thicknesses by selecting the appropriate step level, providing adaptability without requiring completely different jaw structures for each thickness.
4Ease of manufacture
If a tool is made from multiple parts, then manufacturing and assembly are easier, but the overall strength and reliability are reduced
Solution Approach 1:
The head structure is designed as a single integral piece of metal rather than an assembly of multiple bolted or riveted parts. This merging of components into one monolithic structure eliminates weak points at joints, maximizing structural strength and reliability while still allowing for manufacturing through conventional metalworking processes like forging or casting.
Data Source
AI summary
The invention provides a demolition tool that can be used in many ways for the demolition of construction materials or other materials. The demolition tool includes a handle having a head at one end. The head has a longitudinal central plane that bisects the head, a strike contact face, and toothed, stepped grasping jaws that accommodate multiple sizes of lumber or other material. The head may also include a blunt blade edge below the strike contact face for striking and demolishing material. The demolition tool includes a bent end pry bar at a second end of the handle. The bent end pry bar being offset 90 degrees from the longitudinal central plane of the tool head enabling full range of motion without interfering with other tool functions. The demolition tool may comprise a single piece of material and may be softer than tools used to strike it, but harder than materials which it is used to strike.