Crop cutting knives for agricultural combine harvester
US-2019364726-A1 · Dec 5, 2019 · US
Knife blade for a cutting apparatus
US11304366B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11304366-B2 |
| Application number | US-202016935451-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 22, 2020 |
| Priority date | Sep 10, 2019 |
| Publication date | Apr 19, 2022 |
| Grant date | Apr 19, 2022 |
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- Title
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- Abstract
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Abstract
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A knife blade for a cutting apparatus has two cutting edges which are arranged at a substantially triangular cutting portion extending longitudinal to a fastening portion, wherein the cutting edges have areas with different tooth pitches from tooth pitches in other areas.
First claim
Opening claim text (preview).
What is claimed is: 1. A knife blade for a cutting apparatus, comprising a substantially triangular cutting portion connected to and extending longitudinally on a fastening portion, and two cutting edges which are arranged on the cutting portion, wherein each of the cutting edges have areas with tooth pitches that are different from tooth pitches in other areas, wherein a lower area of the knife blade starting from the fastening portion has a quantity of teeth that is less than a quantity of teeth in an upper area of the knife blade extending to the knife tip. 2. The knife blade according to claim 1 , wherein the cutting edges are divided into at least two parallelly extending areas with different tooth pitches. 3. The knife blade according to claim 1 , wherein the tooth pitch in the upper area corresponds to an integral multiple of the tooth pitch in the lower area. 4. The knife blade according to claim 1 , wherein the lower area extends over at least one half of a total longitudinal extension of the cutting portion of the knife blade. 5. The knife blade according to claim 1 , wherein the upper area has a tooth pitch which corresponds to a quantity between 13 and 15 teeth per inch. 6. The knife blade according to claim 1 , wherein the lower area has a tooth pitch which corresponds to a quantity between 6 and 8 teeth per inch. 7. The knife blade according to claim 1 , wherein the knife blade is formed of one part and forms a double blade with a second knife blade. 8. A cutting apparatus with at least one oscillatingly driven knife strip at which is arranged a plurality of knife blades constructed according to claim 1 . 9. The cutting apparatus according to claim 8 , wherein the cutting apparatus is constructed as a double-knife cutting apparatus. 10. A header with a cutting apparatus according to claim 8 . 11. A chopping arrangement of a self-propelled harvesting machine with knife blades formed according to claim 1 .
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Frequently asked questions
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- What does patent US11304366B2 cover?
- A knife blade for a cutting apparatus has two cutting edges which are arranged at a substantially triangular cutting portion extending longitudinal to a fastening portion, wherein the cutting edges have areas with different tooth pitches from tooth pitches in other areas.
- Who is the assignee on this patent?
- Claas Selbstfahrende Erntemaschinen Gmbh
- What technology area does this patent fall under?
- Primary CPC classification A01D34/13. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Apr 19 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).