Shingle Removal Tool with Parallel Teeth and Barb
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Solution Overview
Problem
Existing shingle removal tools are slow and labor-intensive due to frequent stopping when encountering nails, and they lack efficient mechanisms to separate loosened shingles from adjacent ones.
Innovation Solution
A shingle removal tool with a head featuring spaced, parallel teeth having acute angles and a barb, allowing for efficient engagement and lifting of shingles without stopping at nails, and facilitating the removal and movement of debris.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional serrated shovel is used to remove shingles, then the tool can engage and lift shingles, but the tool stops frequently when contacting nails, reducing removal speed
Solution Approach 1:
The head is divided into multiple functional segments: cutting teeth for engaging shingles, a planar surface for sliding over nails without stopping, and a curved surface for prying. This segmentation allows each part to handle specific aspects of shingle removal, enabling continuous operation without stopping at nails.
Solution Approach 2:
Instead of designing teeth that catch and stop at nails (traditional approach), the invention inverts the approach by providing a smooth planar surface that allows the tool to slide over nails continuously. The cutting teeth are positioned to engage shingles above the nail level, so nails are bypassed rather than encountered.
2Ease of operation
If serrated shovel with angular collection notches is used, then nails can be caught and stopped, but the tool requires continuous starting and stopping, increasing labor intensity
Solution Approach 1:
The harmful function of nail-catching teeth is extracted and replaced. Instead of teeth designed to catch and stop at nails, the invention provides a planar surface that extracts the stopping function entirely, allowing continuous motion. Nail removal is handled separately by the prying action of the curved surface, not by stopping the tool.
Solution Approach 2:
The tool design enables continuous useful action by allowing the planar surface to slide over nails without interruption. The cutting teeth continuously engage shingles, and the curved surface continuously pries, creating an unbroken sequence of useful actions rather than repeated starting and stopping.
3Productivity
If traditional shingle removal tools are used, then shingles can be loosened, but loosened shingles remain adhered to adjacent shingles by nails, requiring additional separation effort
Solution Approach 1:
The tool merges three functions into one integrated head: cutting teeth for engaging and loosening shingles, a planar surface for sliding over nails, and a curved surface for prying and separating shingles. This combination allows the tool to both loosen and separate shingles in a continuous motion, eliminating the need for separate operations.
Solution Approach 2:
The head is designed as a multi-functional tool that performs cutting, sliding, and prying operations simultaneously. The universal design allows a single tool to handle both shingle loosening and separation tasks that would traditionally require multiple tools or operations, improving both productivity and ease of operation.
Data Source
AI summary
A shingle removal tool having a head; at least two teeth coupled with the head, the teeth being spaced apart and parallel to each other, each tooth having an acute angle near an end of the tooth that is opposite the head for engaging shingles; and a barb coupled with the head perpendicular to the teeth, whereby a user can thrust the tool beneath a layer of shingles, the teeth lifting the shingles off a subsurface and free of nails, enabling the user to move the shingles away from the surface like a shovel and to also move shingles by using the barb. Several types of handles or bit shanks can be attached.