Marker Installation Apparatus with Segmented Shaft and Push Assembly

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Solution Overview

Problem

Existing ground marking systems are laborious and inefficient, particularly when inserting markers into compacted, stony, or frozen ground, as they often require manual effort and can be difficult due to increased resistance and reliance on friction, which can be ineffective with large markers or in challenging ground conditions.

Innovation Solution

A marker system with a shaft having an insertion portion, an engagement portion, and a mast portion, where the engagement portion provides positive engagement without increasing the cross-sectional size for insertion, and a magazine assembly with a push assembly to facilitate easy and uniform marker insertion into the ground, reducing the need for manual force and minimizing bending.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If markers are inserted by hand into the ground, then no mechanical assistance is required, but the operation becomes physically taxing due to repeated bending and manual effort

Engineering Contradiction:
Improvesimplicity of deviceVSAvoidphysical strain on operator
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The marker installation apparatus is designed to be self-positioning on the ground surface, with the magazine assembly automatically orienting itself during insertion. The push assembly engages the marker and drives it into the ground without requiring the operator to bend or apply direct manual force to the marker itself, allowing the operator to simply press a trigger while standing upright.

Inventive Principle:
Principle #25Self-service

2Strength

If devices increase the cross sectional profile of the marker for rigidity, then the marker can be pushed into ground more easily, but the insertion resistance increases due to larger profile

Engineering Contradiction:
Improverigidity of markerVSAvoidinsertion resistance
Core Design Contradiction:
StrengthVSForce

Solution Approach 1:

The marker shaft is segmented into distinct functional portions: an insertion portion with a first cross-sectional profile optimized for minimal ground penetration resistance, and an engagement portion with a second cross-sectional profile designed for mechanical engagement by the push assembly. This segmentation allows the marker to have sufficient rigidity in the engagement portion while maintaining a slender insertion portion that encounters minimal resistance during ground insertion.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If friction between device and marker is used to move the marker, then the marker can be propelled into the ground, but the method becomes less effective in compacted, stony, or frozen ground

Engineering Contradiction:
Improveease of marker propulsionVSAvoideffectiveness in challenging ground conditions
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system replaces friction-based propulsion with a positive engagement mechanism. The push assembly includes a push member that directly engages the engagement portion of the marker shaft through mechanical contact, providing reliable force transmission regardless of ground conditions. This mechanical engagement system substitutes for the unreliable friction-based methods and maintains consistent performance in compacted, stony, or frozen ground.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Productivity

If devices require continual reloading of markers, then the marker installation process can be completed, but the operation becomes time-consuming and inefficient

Engineering Contradiction:
Improvecompletion of marker installationVSAvoidtime for reloading operations
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

Multiple markers are pre-loaded into the magazine assembly before the installation operation begins. The magazine assembly is configured to hold and automatically feed markers to the push assembly, eliminating the need for continual reloading during the marking operation. This preliminary loading action allows the operator to install multiple markers in rapid succession without interruption.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS7992754B1Marker system with marker and installation apparatus
Publication Date: 2011.08.09 FLAGSHOOTER HOLDINGS LLC
  • US7992754B1 patent drawing
  • US7992754B1 patent drawing
  • US7992754B1 patent drawing

AI summary

A marker installation apparatus is disclosed for inserting a marker of the type having shaft with a bottom end for inserting into a ground surface and an engagement portion of the shaft separated from the bottom end by an insertion portion of the shaft. The apparatus includes a magazine assembly defining a magazine space configured to receive at least one marker. The magazine space has a push position in the magazine space for receiving the at least one marker. The apparatus further comprises a push assembly mounted on the magazine assembly. The push assembly is configured to engage the engagement portion of the shaft of the marker located in the push position and push the marker from the magazine assembly when the push assembly is actuated.