# US 10,440,875 B2 · Turf treatment implement

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- Number: US 10,440,875 B2
- Document ID: US10440875B2
- Status: Granted
- Kind: B2
- Application number: 16/034,979
- Filed: 2018-07-13
- Published: 2018-11-22
- Granted: 2019-10-15
- Earliest claimed: 2012-10-24
- Assignees: Richard Campey Limited
- Applicants: Richard Campey Limited
- Inventors: Richard John Campey; Simon Jonathan Gumbrill; Johannes Hendricus Wilhelmus Herman De Kort
- Web page: https://patentgrep.com/patent/US10440875B2

## CPC

- A01B 45/026: {Scarifiers comprising a knife reel actively driven around a substantially horizontal shaft}
- A01D 34/53: Helically shaped cutting members
- A01B: SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL (making or covering furrows or holes for sowing, planting or manuring A01C5/00; mowers convertible to soil working apparatus or capable of soil working A01D42/04; mowers combined with soil working implements A01D43/12; soil working for engineering purposes E01, E02, E21)
- A01D: HARVESTING; MOWING

## Abstract

A cylindrical turf treatment rotor adapted to be driven in rotation about a horizontal axis, and provided with wear-resistant teeth extending along one or more helical tracks on the rotor, the teeth being individually attached to the rotor so as to be capable of individual removal for replacement or refurbishing or for reconfiguring the rotor.

## Claims

### Claim 1

A cylindrical turf treatment rotor adapted to be driven in rotation about a horizontal axis, and provided with wear-resistant teeth adapted to penetrate the turf, the teeth extending along two helical tracks on the rotor, the teeth on a helical track being connected to adjacent teeth on the same helical track, wherein the teeth extend at least 60 mm above the cylindrical surface of the rotor, and the teeth being attached to the rotor so as to be capable of removal for replacement or refurbishing or for reconfiguring the rotor.

### Claim 2 (depends on 1)

The cylindrical turf treatment rotor according to claim 1, in which the teeth are removably attached to blades fixed on the rotor.

### Claim 3 (depends on 2)

The cylindrical turf treatment rotor according to claim 2, in which the teeth are bolted on to the blades.

### Claim 4 (depends on 3)

The cylindrical turf treatment rotor according to claim 3, in which the teeth are attached by a single bolt, the blades having recesses or being so arranged in relation to adjacent blades as to define a recess into which the teeth fit so as to be held securely in position by a single bolt.

### Claim 5 (depends on 2)

The cylindrical turf treatment rotor according to claim 2, in which the blades are fixed in slots in the rotor.

### Claim 6 (depends on 1)

The cylindrical turf treatment rotor according to claim 1, in which the teeth extend up to 200 mm above the cylindrical surface of the rotor.

### Claim 7 (depends on 1)

The cylindrical turf treatment rotor according claim 1, in which the teeth extend on four equally spaced helical tracks.

### Claim 8 (depends on 1)

The cylindrical turf treatment rotor according to claim 1, in which the teeth are comprised of a wear resistant material or tipped with wear resistant material.

### Claim 9 (depends on 5)

The cylindrical turf treatment rotor according to claim 5, wherein the slots are laser-cut.

### Claim 10 (depends on 5)

The cylindrical turf treatment rotor according to claim 5, wherein the blades are welded in the slots.

### Claim 11 (depends on 8)

The cylindrical turf treatment rotor according to claim 8 wherein the teeth are comprised of, or tipped with, tungsten carbide.