Pin Tool Assembly with Integrated Storage for Digging Teeth

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Solution Overview

Problem

Existing ground engaging implement technologies face difficulties in efficiently installing and removing retaining pins due to logistical challenges, particularly with side-by-side arrangements of digging teeth, and lack effective solutions for storing replacement pins, leading to increased operational time and economic waste.

Innovation Solution

A pin tool assembly with a blind recess and elongated pin extractor, capable of forcibly removing and inserting different types of retaining pins, featuring a compressible elastomer and textured surface for enhanced handling, and integrated storage for multiple pin types.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple specialized tools are used for different retaining pin types, then each pin type can be handled specifically, but tool complexity and cost increase significantly

Engineering Contradiction:
Improvecompatibility with different retaining pin typesVSAvoidnumber of different tools required
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The tool is designed with a universal interface system that can accommodate multiple retaining pin types (solid steel cylindrical pins, flex-pins with tapered ends, and pins with radial shoulders) through a single multi-functional tool body, eliminating the need for multiple specialized tools

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Manufacturing precision

If specialized tools are designed for specific retaining pin types, then operational precision is improved, but economic waste increases due to needing multiple tools

Engineering Contradiction:
Improveprecision of pin installation and removalVSAvoideconomic waste from multiple tools
Core Design Contradiction:
Manufacturing precisionVSLoss of substance

Solution Approach 1:

The tool maintains manufacturing precision for all pin types by incorporating adaptable interface elements that can be configured for each specific pin type, achieving the same precision level as specialized tools without requiring multiple separate tools

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If digging teeth are arranged side-by-side, then bucket penetration capability is enhanced, but accessibility for pin installation and removal deteriorates

Engineering Contradiction:
Improvebucket penetration capabilityVSAvoidaccessibility for retaining pin installation and removal
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The tool incorporates an offset handle configuration that extends perpendicular to the tool body, allowing the operator to apply force from a different spatial dimension that avoids interference from adjacent teeth and adapters in the side-by-side arrangement

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

4Ease of manufacture

If replacement retaining pins are stored in a tool box, then storage is simple, but retrieval time increases due to lack of organization

Engineering Contradiction:
Improvesimplicity of storageVSAvoidtime to locate replacement pins
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The tool integrates built-in storage compartments and magnetic retention features directly into the tool body, combining the functions of tool and storage system into a single unit, allowing replacement pins to be stored organized and easily accessible during operation

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The pin tool assembly simplifies the installation and removal of retaining pins across various types, reducing operational time and the need for multiple specialized tools, while providing convenient storage for replacement pins, thereby enhancing efficiency and reducing economic waste.

Implementation Method 1

a compressible elastomer and textured surface for enhanced handling

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a compressible elastomer and textured surface for enhanced handling

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS8443504B2Pin tool assembly for acting on a retaining pin for a tooth of a ground engaging implement
Publication Date: 2013.05.21 H&L TOOTH CO
  • US8443504B2 patent drawing
  • US8443504B2 patent drawing
  • US8443504B2 patent drawing

AI summary

A pin tool assembly for forcibly removing a first type of retaining pin from digging teeth arranged in side-by-side relation across a forward edge of a digging implement. The pin tool assembly includes a tool defining a blind recess laterally disposed to one side of the tool. The tool assembly further includes an elongated extractor pin having an enlarged head portion and a shank portion extending from the head portion. Cooperating instrumentalities maintain and position the extractor pin relative the tool such that, when a force is applied to the tool, the free end of the shank portion of the pin engages with and forcibly extracts the retaining pin from the digging tooth. Preferably, the tool further defines a plurality of openings for snugly accommodating a series of retaining pins therein.