Fastener Guide Funnel and Gap Flange Alignment

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Solution Overview

Problem

Existing tools used to guide fasteners struggle with alignment, especially in tight spaces and with small fastener heads, leading to increased installation time and labor costs in construction applications.

Innovation Solution

A fastener guide featuring a downward opening funnel and an elongated barrel that aligns with the fastener head, along with a gap flange to set the gap between boards, and an optional upward opening funnel for easy drive feature alignment, allowing for efficient and consistent fastener installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional fastener guide is used, then the tool can guide fasteners at a predetermined angle, but alignment between the tool bit and fastener head becomes difficult, especially in tight spaces and with small fastener heads

Engineering Contradiction:
Improvealignment easeVSAvoidalignment precision
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary alignment component that mediates between the tool bit and fastener head. This component includes a funnel-shaped guide structure and an alignment feature (such as a collar or shoulder) that physically bridges the gap between the driving tool and the small fastener head, enabling precise alignment without requiring the tool bit to directly contact the fastener head.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies preliminary action by pre-positioning the alignment component on the tool before engagement with the fastener. The funnel-shaped guide is pre-configured to receive the fastener head, and the alignment feature is pre-placed to establish the correct angular relationship. This preliminary setup ensures that when the tool engages the fastener, alignment is already achieved, eliminating the need for real-time adjustment.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If the fastener head is very small, then hidden fasteners can be installed in crevices between boards, but it takes a careful, steady hand to align the bit with the head, increasing installation time

Engineering Contradiction:
Improvefastener installation versatilityVSAvoidinstallation time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The alignment component serves as an intermediary that amplifies the installer's control over the small fastener head. The funnel-shaped guide structure provides a larger target area for alignment, while the internal alignment features (collars, shoulders, or positioning ribs) ensure that once the fastener head enters the guide, it is automatically positioned correctly for engagement with the tool bit.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent segments the alignment function into separate components: the funnel-shaped guide for initial positioning, the alignment feature (collar/shoulder) for angular alignment, and the engagement feature for final connection. This segmentation allows each component to perform its specific function optimally, making the overall alignment process more reliable and faster.

Inventive Principle:
Principle #1Segmentation

3Productivity

If hundreds or thousands of fasteners are installed on a large job, then productivity is critical, but the alignment problem compounds and adds time and labor cost

Engineering Contradiction:
Improvefastener installation productivityVSAvoidcumulative alignment time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The alignment component is pre-configured on the tool before engagement with the fastener. The funnel-shaped guide and alignment features are already in place to ensure correct positioning. This eliminates the need for real-time alignment adjustments during high-volume installation, significantly reducing cumulative alignment time across hundreds or thousands of fasteners.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The alignment component is designed to self-align the tool bit with the fastener head through its geometric features. The funnel-shaped guide naturally guides the fastener head into the correct position, and internal alignment features (such as collars or shoulders) automatically establish the proper angular relationship. This self-alignment mechanism eliminates the need for skilled manual alignment, enabling consistent rapid installation across large jobs.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS10576612B2Method of using a fastener guide to install a fastener
Publication Date: 2020.03.03 NAT NAIL CORP
  • US10576612B2 patent drawing
  • US10576612B2 patent drawing
  • US10576612B2 patent drawing

AI summary

A method of using a fastener guide to install a fastener that can include moving a funnel of the fastener guide over an upright fastener so that a head of the fastener is guided into and enters a barrel of the guide such that a drive feature can align and register with the head in the barrel. The method can include extending a gap flange of the guide into a gap between adjacent boards and advancing the fastener from the guide into the gap, and into a joist under the board to secure the board to the joist.