Triangular Sanding Tool with Pivoting Handle for Surface Stability

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing sanding devices tend to flip, causing damage to surfaces due to their narrow configuration and high handle placement, and struggle with corner sanding due to mismatched angles and uneven sanding, leading to potential gouging and swirl marks.

Innovation Solution

The design includes a tool body with a pivoting handle attachment and a base with angled surfaces, allowing for reduced flipping and improved corner access, along with a pad and base configuration that can be easily replaced and adjusted for various sanding tasks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the device uses a narrow elongate rectangular configuration with high handle attachment, then the device can accommodate standard sized sand paper, but the device tends to flip onto its sides and damage the surface

Engineering Contradiction:

Improvecompatibility with standard sand paperVSAvoidstability during operation

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The device transitions from a narrow elongate rectangular configuration to a substantially triangular configuration with the handle attached near the center. This asymmetric triangular shape with a wide base provides inherent stability while maintaining compatibility with standard sand paper sheets through the enlarged working surface area.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The device adds dimensional width by transitioning from a narrow rectangular profile to a triangular profile with a wide base. This dimensional change in the horizontal plane increases the moment of inertia and stabilizes the device against flipping while preserving sand paper compatibility.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Volume of moving object

If the device uses a narrow configuration with high handle attachment, then the device can be compact, but the corners or edges can gouge the surface

Engineering Contradiction:

Improvecompact sizeVSAvoidsurface gouging

Core Design Contradiction:

Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The triangular configuration with a wide base and apex orientation creates an asymmetric shape that distributes contact pressure more evenly across the working surface. This prevents edge concentration and gouging while maintaining a compact overall device footprint.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The triangular shape provides locally optimized contact characteristics at the apex for corner work while the wide base provides stability. The geometry creates different functional zones: the apex for precise corner access and the wide base for stable support, preventing harmful edge contact.

Inventive Principle:

Principle #3Local quality

3Ease of operation

If the device uses an acute isosceles triangular shape, then the device can access corner areas, but the angles do not match most corners and uneven sanding occurs

Engineering Contradiction:

Improvecorner access capabilityVSAvoidsanding uniformity

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The device incorporates a rotatable triangular head that can rotate to different orientations. This dynamic capability allows the operator to align the triangular apex with corner areas and adjust the orientation to match various corner angles, ensuring uniform sanding across different geometries.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The triangular working head is segmented as a separate rotatable component from the handle assembly. This segmentation allows independent rotation and orientation adjustment of the triangular working surface to match different corner angles, achieving uniform sanding while maintaining corner access capability.

Inventive Principle:

Principle #1Segmentation

4Productivity

If the device uses a motorized rotating head, then the number of passes is reduced, but the device becomes larger and more cumbersome

Engineering Contradiction:

Improvesanding speedVSAvoiddevice size

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

Instead of motorizing the device to automate rotation, the invention inverts the approach by making the triangular head manually rotatable. This manual rotation capability provides the flexibility and speed benefits of motorized systems while avoiding the complexity and size increase associated with motors and drive mechanisms.

Inventive Principle:

Principle #13The other way round (Inversion)

5Area of stationary object

If the device uses a circular O-shaped working surface, then the working surface is continuous, but access to the bolt is required and skill is needed to prevent swirl marks

Engineering Contradiction:

Improveworking surface continuityVSAvoiduser skill requirement

Core Design Contradiction:

Area of stationary objectVSEase of operation

Solution Approach 1:

The device transitions from a symmetric circular O-shaped working surface to an asymmetric triangular configuration. This asymmetric triangular shape provides inherent directional guidance for the operator, reducing the skill required to maintain proper orientation and prevent swirl marks while maintaining a continuous working surface.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS7670210B2Tool for working on a surface

Publication Date: 2010.03.02 FULL CIRCLE INTERNATIONAL INC

AI summary

An embodiment of a tool includes a tool body. A base is coupled to the tool body and a pad is coupled to the base. The tool includes a working material coupled to the pad.