Self-Tapping Traction Stud for Endless Tracks

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Solution Overview

Problem

Traditional methods for installing traction studs in endless tracks, such as those on snowmobiles, involve drilling from the outside, which damages the track's fiber layers and complicates the process due to internal components, leading to weakened tracks and installation challenges.

Innovation Solution

The development of self-tapping traction studs with cutting flutes and a torqueable design that allows for internal installation, minimizing fiber cutting and simplifying the process by using an electric or pneumatic drill with a driving mechanism, accompanied by a threaded nut and washer, and optionally a threaded cap with flutes for enhanced torque application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If traditional drilling method is used to install traction studs from the outside of the track, then the studs can be installed, but the drill bit cuts and damages the fiber layers of the track, weakening the track structure

Engineering Contradiction:
Improvestuds installationVSAvoidtrack fiber layers
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The patent inverts the traditional installation approach by drilling from the inside of the track rather than from the outside. The self-tapping stud is inserted from the interior side and tapped into the track material, allowing the drill bit to engage the material without cutting through and damaging the outer fiber layers. This reversal of the drilling direction resolves the contradiction between ease of installation and preservation of track strength.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The self-tapping stud performs both drilling and fastening functions in a single operation. The cutting flutes on the stud create its own threaded hole as it is being installed, eliminating the need for a separate drilling step that would damage the fibers. The stud serves itself by creating the receptacle for installation while simultaneously securing itself, thereby avoiding fiber cutting.

Inventive Principle:
Principle #25Self-service

2Ease of manufacture

If drilling from the outside is used, then studs can be installed, but the process is complicated by suspension system components and other internal components in the open inside area

Engineering Contradiction:
Improvestuds installationVSAvoidinstallation process
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

By inverting the installation direction to drill from the inside, the patent eliminates the need to navigate around suspension components and other internal parts that obstruct external drilling. The self-tapping mechanism requires minimal clearance and can be installed from the interior side where there is more working space, significantly simplifying the installation process despite the presence of internal components.

Inventive Principle:
Principle #13The other way round (Inversion)

3Ease of manufacture

If normal drill and bit is used to drill holes in the track, then holes can be created for stud insertion, but the drill cuts through multiple layers of fiber cords, weakening the endless track

Engineering Contradiction:
Improvehole creationVSAvoidfiber layers
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The self-tapping stud creates its own installation hole through the self-tapping process, eliminating the need for a separate drilling operation that would cut through and damage the fiber layers. The cutting flutes on the stud remove material efficiently as the stud is being installed, creating a clean threaded hole without the excessive fiber cutting associated with traditional drilling methods.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

By tapping from the inside rather than drilling from the outside, the patent prevents the drill bit from cutting through the outer fiber layers. The self-tapping action engages the material and creates a contained hole that does not compromise the integrity of the track's fiber structure, resolving the contradiction between hole creation and fiber preservation.

Inventive Principle:
Principle #13The other way round (Inversion)

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

This method significantly reduces fiber damage and simplifies the installation process by allowing studs to be placed from the inside of the track, extending the track's lifespan and improving operational efficiency.

Implementation Method 1

The distal end has at least one cutting flute located in it

Methodology Applied
Scientific EffectMaterial removal through cutting flutes: Abrasion

Data Source

PatentUS10562576B2Traction stud for endless tracks
Publication Date: 2020.02.18 MUSSELMAN ROBERT
  • US10562576B2 patent drawing
  • US10562576B2 patent drawing
  • US10562576B2 patent drawing

AI summary

A traction stud for endless tracks. The traction stud comprises a base and the base has a center point on a top surface and a center point on a bottom surface. There is an elongated shank rigidly surmounted on the top surface at the center point. The shank has a distal end. The distal end has at least one cutting flute located in it. The shank has a threaded surface. The base has, at the center point of the bottom, a means for torqueing the traction stud.