Molding Removal Blade and Tab Assembly for Damage-Safe Prying

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Solution Overview

Problem

Existing trim removal tools are inefficient for removing molding, such as wall trim, door trim, and baseboards from a wall surface, as they lack a mechanism to effectively dislodge these components without causing damage.

Innovation Solution

A trim removal tool with a handle, a plate, and a blade attached to its distal edge, featuring a tab that extends over the plate and is angled towards the handle, allowing the blade to be driven between the molding and the wall to dislodge it, along with a notch for removing fasteners.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If existing trim removal tools are used, then the removal process can be performed, but the efficiency is low and damage risk is high

Engineering Contradiction:
Improveremoval efficiencyVSAvoiddamage risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The tool is divided into distinct functional segments: a flat edge for initial insertion, an angled blade for prying, and a tab for leverage. Each segment performs a specific function in the removal sequence, allowing efficient progression from insertion to prying to full removal without damaging the molding.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The tab acts as an intermediary element between the user's force and the molding. By positioning the tab between the hammer and the molding, it distributes and controls the applied force, enabling effective prying while minimizing direct impact damage to the molding surface.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a simple blade design is used, then the device complexity is low, but the ease of operation is insufficient

Engineering Contradiction:
Improvehandling easeVSAvoidstructure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

Multiple functional elements (flat edge, angled blade, tab) are merged into a single integrated tool head. This combination allows the user to perform insertion, prying, and leverage operations with one tool rather than switching between multiple tools, significantly improving ease of operation.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The tool head is designed with an angled blade that can dynamically adjust its prying angle as force is applied. The tab can be positioned at different locations along the blade, allowing the user to adapt the tool's mechanical advantage to different molding types and removal scenarios.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8365378B1Molding removal tool assembly
Publication Date: 2013.02.05 LENART EDWARD
  • US8365378B1 patent drawing
  • US8365378B1 patent drawing
  • US8365378B1 patent drawing

AI summary

A molding removal tool assembly includes a handle having a first end and a second end. A plate is attached to the second end. The plate has a distal edge with respect to the handle. A blade is attached to the distal edge. The blade has a first side, a second side and a free edge. The blade has an opening therein extending into the first side and outwardly of the second side. The opening has a bottom edge. A tab is attached to the bottom edge and is angled toward the handle so that the plate extends over the tab. The free edge is configured to be extended between a wall surface and molding attached to the wall surface to urge the molding off of the wall surface with the tab.