Powered Shingle Removal Tool with Reciprocating Blades
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Removing shingles and other roofing materials from surfaces is labor-intensive and requires significant force, posing challenges due to their firm attachment and difficult access on slanted surfaces, which can lead to operator strain and potential damage to the surface.
Innovation Solution
A tool with a spade assembly and powered drive-wheel mechanism that uses blades to pry loose roofing materials, powered by a remote source, allowing for efficient removal without excessive force on the operator or the surface, featuring a handle for easy maneuverability and a ramp for assisting in material extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual force is used to remove shingles, then the operator can control the tool, but significant force is required leading to operator strain
Solution Approach 1:
The patent replaces manual mechanical force with a powered mechanism (electric motor or pneumatic/hydraulic actuator) that drives the blade reciprocatingly. The power source is connected through a flexible shaft or direct drive, substituting the operator's manual force application with an automated power transmission system that delivers the necessary force without operator strain.
Solution Approach 2:
The blade is designed to move reciprocatingly (back and forth) rather than remaining static. This dynamic motion allows the blade to effectively pry and lever shingles loose with each stroke. The reciprocating motion is achieved through a powered mechanism that oscillates the blade, converting rotational or linear power into the desired back-and-forth prying action.
2Productivity
If excessive force is applied to remove firmly attached shingles, then shingles can be removed, but damage occurs to the roof surface
Solution Approach 1:
The blade is designed with specific geometric properties (thickness, width, edge shape) that concentrate the prying force locally at the tip where it contacts the shingle. This localized force application allows effective shingle removal while distributing the overall stress away from the roof surface. The blade acts as a lever with the force applied at a specific point rather than across the entire surface.
Solution Approach 2:
The blade serves as an intermediary tool between the powered mechanism and the shingle. It translates the mechanical force from the power source into a controlled prying action that lifts the shingle edge without directly transmitting excessive force to the roof surface. The blade's geometry and material properties mediate the force transmission to achieve effective removal with minimal surface damage.
3Ease of operation
If a powered tool is used to reduce operator effort, then less force is required from the operator, but the tool becomes more complex
Solution Approach 1:
The power source (motor or actuator) is extracted as a separate component from the blade assembly and connected through a flexible shaft or direct mounting. This separation allows the powered mechanism to be independently selected and optimized while keeping the blade component simple. The power transmission elements (flexible shaft, gears, or direct drive) are minimized to reduce overall complexity while still providing the necessary powered motion.
4Reliability
If shingles are firmly attached through nails or staples, then shingles are securely fastened, but removal becomes labor and time consuming
Solution Approach 1:
The reciprocating blade performs preliminary prying action at the shingle edge before complete removal is needed. By inserting the blade under the shingle edge and applying reciprocating prying force, the shingle is gradually lifted and detached from the nails or staples. This preliminary prying action weakens the attachment progressively, making the overall removal process faster and less labor-intensive compared to attempting to pull firmly attached shingles directly.
Data Source
AI summary
The present invention relates to tools for removing shingles, nails and other materials from a roof or other surface. A tool of the invention, in certain embodiments, comprises blades that move in preferably a reciprocating manner to pry up shingles, nails and other materials. A tool of the invention, in certain embodiments, can be powered through a remote power source to move the blades. In certain other embodiments, a tool of the invention comprises a drive-wheel which is rotated through force form a remote power source.