Grass treatment system and method

Patent metadata

Field	Value
Publication number	US-11272672-B2
Application number	US-201816207536-A
Country	US
Kind code	B2
Filing date	Dec 3, 2018
Priority date	Dec 1, 2017
Publication date	Mar 15, 2022
Grant date	Mar 15, 2022

Abstract

A grass treatment system includes a first ground engaging rolling element, a second ground engaging rolling element, a comb having a leading edge including a plurality of comb teeth spaced apart at intervals, the comb is mounted between the first and second rolling elements and transversely to a direction of travel, a substantially cylindrical brush positioned above the comb and configured to engage at least a portion of a top surface of the comb, wherein the brush rotates relative to the comb to propel debris lifted from an area of turf grass by the comb.

First claim

The invention claimed is:

1. A grass treatment system, comprising
a first ground engaging rolling element;
a second ground engaging rolling element;
a comb having a leading edge comprising a plurality of comb teeth spaced apart at intervals, wherein the comb is mounted in a horizontal position parallel to a ground surface between the first and second rolling elements and transversely to a direction of travel, and wherein the comb leading edge extends towards the first ground engaging rolling element;
a substantially cylindrical brush positioned above the comb and configured to engage at least a portion of a top surface of the comb, wherein the brush does not contact the ground surface, and
wherein the brush rotates relative to the comb to propel debris lifted from an area of turf grass by the comb.

2. The grass treatment system of claim 1 , wherein the comb teeth are positioned to intersect with an upper surface of the turf grass, and are operative to lift debris from a surface of the turf grass to an area within a reach of the brush.

3. The grass treatment system of claim 1 , wherein the brush comprises
a substantially cylindrical core extending along a longitudinal axis; and
a plurality of radially extending bristles extending longitudinally along the surface of the core.

4. The grass treatment system of claim 3 , wherein the bristles are arranged in one or more columns disposed in one or more helical paths about at least a portion of the longitudinal axis of the core.

5. The grass treatment system of claim 1 , wherein the comb comprises a generally planar structure having a continuous spine along a longitudinal direction and transverse to a direction of travel of the system; and
the plurality of comb teeth extend orthogonally to the spine.

6. The grass treatment system of claim 1 , wherein the comb comprises an elongated spine, and the plurality of comb teeth extend outwardly from one edge of the spine.

7. The grass treatment system of claim 1 , wherein the comb comprises an elongated spine, and a plurality of arcuate teeth extending outwardly from one edge of the spine.

8. The grass treatment system of claim 1 , wherein the comb comprises generally equally spaced teeth having an elongated sawtooth profile.

9. The grass treatment system of claim 1 , comprising at least one height adjustment mechanism for calibrating an aperture between the top surface of the comb and at least a portion of an outer edge of the brush.

10. The grass treatment system of claim 9 , wherein the aperture between the top surface of the comb and the outer edge of the brush is between about 0 mm to 50 mm.

11. The grass treatment system of claim 1 , comprising at least one height adjustment mechanism for adjustment of a distance from the comb to a surface of the turf.

12. The grass treatment system of claim 1 , the comb is positioned to contact a top portion of the turf grass surface equal to or less than about one third a length of the turf grass.

13. The grass treatment system of claim 1 , comprising a rotatable groomer positioned between the comb and brush, wherein the groomer comprises alternating angled blades.

14. The grass treatment system of claim 1 , wherein the comb and/or the brush comprise a non-stick nanocoated film or layer, and the nanocoated film or layer comprises at least one of a hydrophobic coating and a hydrophilic coating.

15. The grass treatment system of claim 1 , comprising a collection container positioned to receive debris propelled by the brush.

Assignees

• Mtd Products Inc

Inventors

• Coleman John
• Williams Darren

Classifications

• B08B1/34

  rotating about an axis parallel to the surface · CPC title

• E01C19/20

  Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders ({E01C19/21, E01C19/4813, E01C19/482, E01C23/098, E01C23/166 take precedence; } fertiliser distributors A01C15/00 {; permanently-installed devices for applying gritting or thawing materials E01H10/005; mobile spreaders specially adapted for treating wintry roads E01H10/007}) · CPC title

• A01B45/00

  Machines for treating meadows or lawns {, e.g. for sports grounds} · CPC title

• E01C19/15

  for laying-down uncoated stone or similar materials, or for striking-off or spreading same without compacting, e.g. for crushed rock base courses, sand cushions for paving ({E01C19/466} , E01C19/52 take precedence; distributing E01C19/20; {laying down and rolling E01C19/482}) · CPC title

• E01H1/056

  having horizontal axes · CPC title