Versatile Slide Hammer for Automotive Body Repair

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Solution Overview

Problem

Existing slide hammer apparatuses for automotive body repair are inefficient and unsafe due to lengthy setup times, limited control over corrective forces, and difficulty in navigating obstacles, often requiring operators to compromise on safety and repair quality.

Innovation Solution

A versatile slide hammer apparatus that can be mounted in line with an existing static pull force, allowing greater control over corrective forces and enabling the avoidance of obstacles by being adaptable to different mounting points along the pull chain, thereby enhancing safety and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional slide hammer mounting methods (hooks, screw threads, jaws, clamps) are used, then the apparatus can be attached to the workpiece, but the setup time becomes considerable and safety is compromised

Engineering Contradiction:
ImprovesafetyVSAvoidsetup time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent introduces a chain as an intermediary element that connects the frame puller to the workpiece, eliminating the need for direct mounting of the slide hammer to the workpiece. The chain serves as a flexible mediator that transmits force while allowing the slide hammer to be mounted to the chain rather than directly to the workpiece, thereby reducing setup time and improving safety.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The slide hammer apparatus is designed to be universally mountable to various points along the chain, not just to the workpiece itself. This multi-functionality allows the operator to attach the slide hammer at different locations depending on the specific repair task, reducing setup time by eliminating the need for custom mounting solutions for each scenario.

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

2Ease of operation

If the operator reconfigures the work environment to navigate obstacles, then the impact forces can be applied, but the overall efficiency and quality of repair are reduced

Engineering Contradiction:
Improveability to negotiate obstaclesVSAvoidoverall efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The chain provides a dynamic, flexible connection that can adapt to obstacles in the work environment. Rather than requiring static reconfiguration of the work area, the chain can be routed around obstacles while maintaining the force transmission path, allowing the operator to maintain efficiency while navigating around obstructions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The chain allows the force transmission path to move into a different spatial dimension by routing around obstacles rather than requiring direct linear alignment. This dimensional flexibility enables the operator to maintain efficient force application without being constrained by obstacles in the direct path.

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

3Force

If the operator uses a frame puller alone, then static pull force can be applied, but control over corrective forces is insufficient

Engineering Contradiction:
Improvecontrol over corrective forcesVSAvoidapparatus configuration
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The patent merges the frame puller (providing static pull force) with the slide hammer (providing impact forces) into a single integrated system connected by the chain. This combination allows the operator to control both static and dynamic forces simultaneously, achieving superior control over corrective forces while maintaining relatively simple apparatus configuration.

Inventive Principle:
Principle #5Merging (Combining)

4Force

If conventional slide hammer apparatus are used, then impact forces can be delivered, but the ability to control corrective forces is limited

Engineering Contradiction:
Improvecontrol over corrective forcesVSAvoidcontrol capability
Core Design Contradiction:
ForceVSEase of operation

Solution Approach 1:

The chain connection creates a feedback mechanism where the operator can feel the resistance and control the force application in real-time. The flexible chain transmission allows the operator to modulate impact forces based on feedback from the workpiece, thereby improving control capability while maintaining ease of operation.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS10882174B2Versatile slide hammer method and apparatus
Publication Date: 2021.01.05 CHARTIER GARY CLAUDE
  • US10882174B2 patent drawing
  • US10882174B2 patent drawing
  • US10882174B2 patent drawing

AI summary

The present invention provides a means to achieve enhanced control of repair forces in the automotive body repair industry. In particular, the present invention provides a modified slide hammer and a method to achieve repair through the controlled application of forces otherwise not attainable with existing embodiments. Additionally, the present invention provides an ease of use and versatility of application and mounting at the site of the work in conjunction with and in line with existing devices used in the repair process. The application of the present invention provides increased reliability in the delivery of intended forces at the site of the work. Further, the inherent isolation of repair forces to the intended site of the work by the use of the present invention reduces the likelihood of secondary damage, material waste, or catastrophic failure thereby also enhancing the safety of the operator and the effectivity of repair. Specifically, the present invention may be implemented in conjunction with existing frame pullers in the automotive body repair industry to affect repair while providing facility to avoid obstructions in the path of applied forces.