Utility Bar Fulcrum Edge Leverage for Fastener Removal

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Solution Overview

Problem

Existing utility bars lack an efficient design for removing fasteners and providing leverage, as they often require multiple tools and struggle with the removal of staples and nails due to inadequate fulcrum edges and shapes.

Innovation Solution

A multi-use utility bar with a shank portion, a substantially arch-shaped head portion, and a pry bar portion, featuring multiple facets and fulcrum edges that allow for pivoting and rocking actions to provide leverage for removing fasteners, including a notch and beveled surface for nails and a staple puller for staples, and a bottle opener feature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a utility bar has a simple design without multiple facets and fulcrum edges, then the device complexity is reduced, but the effectiveness in removing fasteners and providing leverage is insufficient

Engineering Contradiction:
Improveease of removing fastenersVSAvoidstructure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The utility bar is divided into multiple functional segments: a head portion with first and second facets, a shank portion, and a pry bar portion. Each segment serves a specific function - the head portion provides fulcrum edges for leverage, the shank provides grip, and the pry bar removes fasteners. This segmentation allows each part to be optimized for its specific task while working together as a unified tool.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different portions of the utility bar have different geometric properties optimized for their specific functions. The head portion has curved surfaces and fulcrum edges for leverage, the shank has a gripping surface, and the pry bar has a pointed end for fastener removal. This local differentiation of geometric quality enables the single tool to effectively perform multiple tasks.

Inventive Principle:
Principle #3Local quality

2Adaptability or versatility

If a utility bar lacks specialized features like notches and beveled surfaces, then the manufacturing complexity is reduced, but the ability to remove different types of fasteners is limited

Engineering Contradiction:
Improveability to remove different fastenersVSAvoidmanufacturing complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The utility bar is designed as a multi-functional tool that can remove various types of fasteners (nails, staples, screws) and perform different tasks (prying, leveraging, opening bottles) through its multiple facets and specialized features. The single tool replaces multiple specialized tools, providing universal fastener removal capability while maintaining reasonable manufacturing complexity through integrated design.

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

3Force

If the utility bar uses a single fulcrum edge design, then the structure is simpler, but the leverage provided for removing fasteners is insufficient

Engineering Contradiction:
Improveleverage for removing fastenersVSAvoidfulcrum edge structure
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The utility bar transitions from a single-point fulcrum to multiple fulcrum edges distributed across different portions of the bar. The head portion provides first and second fulcrum edges, while the pry bar portion provides additional fulcrum edges. This dimensional distribution of fulcrum points allows for greater leverage and more versatile fastener removal by providing multiple pivot points for applying force.

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

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 utility bar effectively removes fasteners and staples with increased ease and efficiency by utilizing the fulcrum edges and shapes to provide leverage, and also functions as a bottle opener, enhancing its multi-use capabilities.

Implementation Method 1

a first fulcrum edge between the first and second facets for providing a first pivot point about which the utility bar is pivoted to provide leverage

Methodology Applied
Scientific EffectLever: Lever

Implementation Method 2

The utility bar effectively removes fasteners and staples with increased ease and efficiency by utilizing the fulcrum edges and shapes to provide leverage

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentUS8646138B2Utility bar
Publication Date: 2014.02.11 MILWAUKEE ELECTRIC TOOL CORP
  • US8646138B2 patent drawing
  • US8646138B2 patent drawing
  • US8646138B2 patent drawing

AI summary

A utility bar includes a shank portion for providing a grip, the shank portion including a first end and a second end, a substantially arch-shaped head portion extending from the first end of the shank portion, and a pry bar portion extending from the second end of the shank portion. Each of the head portion and the pry bar portion define a free end of the utility bar. The utility bar also includes a first facet including the free end of the head portion, a second facet extending from the first facet at an angle with respect to the first facet and positioned between the free end of the head portion and the shank portion, and a first fulcrum edge between the first and second facets for providing a first pivot point about which the utility bar is pivoted to provide leverage.