Multi-Tine Weeding Fork With Cutting Span for Root Severing

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Solution Overview

Problem

Traditional garden tools, such as weed eaters, are ineffective for targeted removal of small areas of weeds and cannot break up woody plants or roots effectively.

Innovation Solution

A garden tool with a handle and a head featuring parallel tines and a span with sharpened edges, allowing for targeted weed removal and root severing, including detachable knife blocks for enhanced cutting efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a weed eater is used to remove weeds, then large areas can be covered, but small areas cannot be effectively targeted and woody plants/roots cannot be broken up

Engineering Contradiction:
Improveweed removal efficiencyVSAvoidapplicability to different weed types and areas
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The garden tool combines multiple functions in a single device: the tines provide mechanical agitation and lifting for various weed types, while the span with sharpened edges provides cutting capability for woody plants and roots. This multi-functional design allows the tool to handle both small targeted areas and larger areas, and effectively process different weed types including woody plants that weed eaters cannot break up.

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

2Adaptability or versatility

If traditional garden tools are used for targeted weed removal, then small areas can be addressed, but woody plants and roots cannot be effectively broken up

Engineering Contradiction:
Improveprecision for small area treatmentVSAvoidcutting power for woody plants
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The tool merges the delicate mechanical action of tines (good for small areas) with the cutting power of a span having sharpened edges (effective for woody plants). The tines can target specific small areas with precision, while the span provides the necessary cutting strength to break up woody plants and roots that traditional tools cannot handle.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If a tool with multiple components is used to handle both surface and sub-surface plant matter, then versatility is improved, but device complexity increases

Engineering Contradiction:
Improvecapability for surface and sub-surface treatmentVSAvoidnumber of components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The tool is segmented into distinct functional components: the tines for mechanical agitation and lifting of plant matter from sub-surface locations, and the span with sharpened edges for cutting and severing roots and woody plants. This segmentation allows each component to perform its specific function efficiently while maintaining overall simplicity in the assembly.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20260013423A1Tool to remove weeds
Publication Date: 2026.01.15 YANEZ YOSHIO
  • US20260013423A1 patent drawing
  • US20260013423A1 patent drawing
  • US20260013423A1 patent drawing

AI summary

A garden tool comprises a fork body with a base portion having upper and lower surfaces. The tool includes a plurality of elongated tines each having a first end connected to the base portion, and an opposed free end. A span element attaches to the base at an intermediate portion along the length of each tine, which are preferably parallel to each other. The span element includes one or more acute cutting edges, which may reside between adjacent tines, or may be connected to some or all of them, preferably being adjacent to the lower surface. According to one variant, the tines each include a plurality of span attachment facilities at different positions along their lengths. The span may have an elongated portion above the upper surface of the fork body. The tines may have opposed parallel sidewalls, and the tool may comprise three, four, five, or more tines.