Adjustable Seed Dispenser and Vibratory Turf Aerator

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Solution Overview

Problem

Existing turf aerators and seed dispensers face challenges in efficiently aerating turf and simultaneously dispensing seeds of different sizes without leaving soil residues and requiring complex dual hopper arrangements.

Innovation Solution

A seed dispensing apparatus with cylindrical seed metering tubes and adjustable seed feed wheels, allowing for incremental adjustment to accommodate seeds of varying sizes, integrated with an improved aerator that avoids soil plugs and enhances root growth by creating larger aeration openings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single seed feed wheel with fixed detent size is used, then the device complexity is reduced, but the adaptability to different seed sizes deteriorates

Engineering Contradiction:

Improveseed dispenser structureVSAvoidseed size accommodation

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The seed feed wheel is designed with adjustable detent positions along its circumference, allowing the operator to dynamically reposition detents to match different seed sizes. This dynamic adjustability enables a single wheel to adapt to various seed types without requiring multiple specialized wheels or complex dual-hopper arrangements.

Inventive Principle:

Principle #15Dynamics

2Productivity

If coring tines are used to aerate turf, then the aeration effectiveness is improved, but harmful soil residues are generated on the surface

Engineering Contradiction:

Improveaeration effectivenessVSAvoidsoil plug residues

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The invention extracts and removes the harmful soil plug residues from the turf surface after aeration. The system incorporates a collection mechanism that captures and removes the extruded soil cores, preventing them from remaining as unwanted residues on the lawn or playing field surface while maintaining the beneficial aeration effects.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If the aerator creates larger holes to enhance aeration, then the aeration effectiveness is improved, but the structural complexity of the aerator increases

Engineering Contradiction:

Improveaeration enhancementVSAvoidaerator structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The aerator employs mechanical vibration applied to the tines during operation. This vibration causes the tines to oscillate or wobble as they penetrate and withdraw from the turf, effectively enlarging the aeration holes without requiring complex mechanical structures. The vibrational motion naturally expands the hole dimensions, enhancing aeration while keeping the device structure relatively simple.

Inventive Principle:

Principle #18Mechanical vibration

Data Source

PatentUS7428874B2Multiple sized seed dispenser and turf aerator

Publication Date: 2008.09.30 FIRST PRODUCTS INC

AI summary

A seeder (20) includes a seed hopper (22) that feeds seed by gravity to a seed dispenser (24). The seed feed wheels (38) of the seeder are mounted in a seed metering tube (30) so that rotation of the seed feed wheels meters the output of the seeds. The seed feed wheels can be formed in segments (50 and 60) so that by matching different segments, different sizes of seed receiving detents can be used for dispensing the seeds. An adjustment bracket (72) shifts the seed feed wheels so that different sizes of detents can register with the openings of the seed metering tube (30), thereby achieving the desired matching of sizes of detents with the sizes of the seeds.