# US 10,117,379 B2 · Blade rotor of a cutter bar for a mowing device

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- Number: US 10,117,379 B2
- Document ID: US10117379B2
- Status: Granted
- Kind: B2
- Application number: 15/214,626
- Filed: 2016-07-20
- Published: 2017-01-26
- Granted: 2018-11-06
- Earliest claimed: 2015-07-24
- Assignees: Deere & Company
- Applicants: Deere & Company
- Inventors: Lionel Guiet; Pierre Dommange
- Web page: https://patentgrep.com/patent/US10117379B2

## CPC

- A01D 34/003: {Means for cleaning the machine}
- A01D 34/664: {Disc cutter bars}
- A01D 34/733: {Cutting-blade mounting means}
- A01D 34/736: {Flail type}
- A01D 2101/00: Lawn-mowers
- A01D: HARVESTING; MOWING

## Abstract

A blade rotor includes a mowing disc, at least one mowing blade, at least one bearing pin mounted on the mowing disc for the pivoting support of the mowing blade, a spring plate arranged on a bottom side of the mowing disc for holding the mowing blade on the bearing pin, and at least one scraper for removing residue stuck on the cutter bar, wherein the scraper is arranged between the spring plate and the bottom side of the mowing disc and is mounted detachably on the mowing disc between the bearing pin and an axis of rotation of the mowing disc.

## Claims

### Claim 1

A blade rotor of a cutter bar of a mowing device, comprising:
a mowing disc positioned above the cutter bar;
at least one mowing blade;
at least one beating pin mounted on the mowing disc for the pivoting support of the mowing blade;
a spring plate arranged on a bottom side of the mowing disc and in contact with the bearing pin for holding the mowing blade on the bearing pin between the spring plate and the mowing disc, the spring plate and mowing disc coupled to rotate together about an axis of rotation; and
at least one scraper for removing residue stuck on a top surface of the cutter bar, wherein the scraper is arranged between a top side of the spring plate and the bottom side of the mowing disc and is mounted detachably on the mowing disc between the bearing pin and the axis of rotation of the mowing disc.

### Claim 2 (depends on 1)

The blade rotor of claim 1, wherein the scraper comprises a fastening plate and a scraper finger extending from there essentially radial to the axis of rotation of the mowing disc and parallel to the surface of the cutter bar with a scraping edge, so that the scraping edge of the scraper finger traverses a circular ring-shaped surface when the mowing disc rotates.

### Claim 3 (depends on 2)

The blade rotor of claim 2, wherein the radial extent of the scraping finger is in the plane of rotation of the mowing blade at an angle offset relative to the mowing blade.

### Claim 4 (depends on 2)

The blade rotor of claim 2, wherein the scraper can be mounted by means of a threaded connection accessible from the top side of the mowing disc, wherein there is at least one threaded bolt that extends through a passage hole formed in the mowing disc and that can be connected to the fastening plate of the scraper.

### Claim 5 (depends on 2)

The blade rotor of claim 2, wherein pockets are provided on the fastening plate on both sides of the bearing pin, wherein these pockets form an attachment fit for a clamping tool that can be attached for exchanging the mowing blade.

### Claim 6

A mowing device with a cutter bar, comprising:
at least one blade rotor including a mowing disc positioned above the cutter bar;
at least one mowing blade;
at least one beating pin mounted on the mowing disc for the pivoting support of the mowing blade;
a spring plate arranged on a bottom side of the mowing disc and in contact with the bearing pin for holding the mowing blade on the bearing pin between the spring plate and the mowing disc, the spring plate and mowing disc coupled to rotate together about an axis of rotation; and
at least one scraper for removing residue stuck on a top surface of the cutter bar, wherein the scraper is arranged between a top side of the spring plate and the bottom side of the mowing disc and is mounted detachably on the mowing disc between the bearing pin and the axis of rotation of the mowing disc.

### Claim 7 (depends on 6)

The mowing device of claim 6, wherein the scraper comprises a fastening plate and a scraper finger extending from there essentially radial to the axis of rotation of the mowing disc and parallel to the surface of the cutter bar with a scraping edge, so that the scraping edge of the scraper finger traverses a circular ring-shaped surface when the mowing disc rotates.

### Claim 8 (depends on 7)

The mowing device of claim 7, wherein the radial extent of the scraping finger is in the plane of rotation of the mowing blade at an angle offset relative to the mowing blade.

### Claim 9 (depends on 7)

The mowing device of claim 7, wherein the scraper can be mounted by means of a threaded connection accessible from the top side of the mowing disc, wherein there is at least one threaded bolt that extends through a passage hole formed in the mowing disc and that can be connected to the fastening plate of the scraper.

### Claim 10 (depends on 7)

The mowing device of claim 7, wherein pockets are provided on the fastening plate on both sides of the bearing pin, wherein these pockets form an attachment fit for a clamping tool that can be attached for exchanging the mowing blade.