Soil working tool

Patent metadata

Field	Value
Publication number	US-9736973-B2
Application number	US-201113810155-A
Country	US
Kind code	B2
Filing date	Jul 12, 2011
Priority date	Jul 15, 2010
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A soil working tool, such as a cultivator tip, having a carrier which bears a primary cutting element and at least two secondary cutting elements on a cutter holder, wherein both the primary cutting element and the secondary cutting elements include a cutting edge. To optimize the penetration to achieve better cutting results, the cutting edges of the secondary cutting elements are arranged offset with respect to the cutting edges of the primary cutting element.

First claim

The invention claimed is:

1. A soil working tool being a cultivator tip comprising:
a support ( 10 ) including a cutter holder ( 13 ) at a first end, the cutter holder ( 13 ) including a primary cutting element mount ( 14 ) between and offset from each of at least two adjacent secondary cutting element mounts ( 14 );
a primary cutting element ( 20 ) mounted on the primary cutting element mount;
at least two secondary cutting elements ( 21 ) each mounted on a corresponding one of the at least two secondary cutting element mounts;
wherein each of the primary cutting element ( 20 ) and the secondary cutting elements ( 21 ) is formed of a first material that is harder than a second material forming the cutter holder and has a respective cutting edge ( 20 . 3 , 21 . 3 ), each of the cutting edges ( 21 . 3 ) of the secondary cutting elements ( 21 ) is positioned offset from the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ), the primary cutting element is disposed between the secondary cutting elements, and the primary cutting element is situated to protrude in an advancing direction of the soil working tool relative to each of the secondary cutting elements or is recessed in the advancing direction of the soil working tool relative to the each of the secondary cutting elements;
wherein each of the primary cutting element mount ( 14 ) and the secondary cutting element mounts ( 14 ) has a seat surface ( 14 . 1 ) and a contact surface ( 14 . 2 ) at an angle to the seat surface ( 14 . 1 ), and the primary cutting element ( 20 ) and the secondary cutting elements ( 21 ) are each supported with a respective fastening section ( 20 . 1 ; 21 . 1 ) that extends from the respective cutting edge ( 20 . 3 , 21 . 3 ) and that has a first support surface disposed against the seat surface ( 14 . 1 ), and with a respective cutting attachment ( 20 . 2 ; 21 . 2 ) that extends from the respective cutting edge ( 20 . 3 , 21 . 3 ) at an angle to the respective fastening section ( 20 . 1 ; 21 . 1 ) and that has a second support surface disposed against the contact surface ( 14 . 2 );
wherein the primary cutting element ( 20 ) is integrally joined on the primary cutting element mount ( 14 ) and each of the at least two secondary cutting elements ( 21 ) is integrally joined on a corresponding one of the at least two secondary cutting element mounts, wherein the integrally joined connection is between the first and second support surfaces and a corresponding one of the seat surface and the contact surface.

2. The soil working tool as recited in claim 1 , wherein the cutting edges ( 21 . 3 ) of the secondary cutting elements ( 21 ) are parallel to one another.

3. The soil working tool as recited in claim 2 , wherein the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ) is parallel to the cutting edges ( 21 . 3 ) of the secondary cutting elements ( 21 ).

4. The soil working tool as recited in claim 3 , wherein the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ) is spaced at least 4 mm apart from the cutting edge ( 21 . 3 ) of each of the secondary cutting elements ( 21 ).

5. The soil working tool as recited in claim 4 , wherein the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ) is spaced at most 15 mm apart from the cutting edge ( 21 . 3 ) of each of the secondary cutting elements ( 21 ).

6. The soil working tool as recited in claim 5 , wherein the contact surface ( 14 . 2 ) or the seat surface ( 14 . 1 ) of each of the secondary cutting elements ( 21 ) and of the primary cutting element ( 20 ) are oriented parallel to one another.

7. The soil working tool as recited in claim 6 , wherein the seat surfaces ( 14 . 1 ) are spaced apart from one another by a distance in the range from 8 mm to 14 mm.

8. The soil working tool as recited in claim 7 , wherein the contact surfaces ( 14 . 2 ) are spaced apart from one another by a distance in a range from 10 mm to 15 mm.

9. The soil working tool as recited in claim 8 , wherein both the primary cutting element ( 20 ) and the secondary cutting elements ( 21 ) have diverting surfaces ( 20 . 4 ; 21 . 4 ) situated parallel to one another and spaced apart from one another by a distance in the range from 5 mm to 11 mm.

10. The soil working tool as recited in claim 9 , wherein the diverting surfaces ( 20 . 4 ; 21 . 4 ) are situated at an angle to each other in a range between 0.1° and 90°.

11. The soil working tool as recited in claim 10 , wherein on the cutter holder ( 13 ), the secondary cutting elements ( 21 ) are situated symmetrical to the primary cutting element ( 20 ).

12. The soil working tool as recited in claim 11 , wherein the width of the cutting edges ( 21 . 3 ) of the secondary cutting elements ( 21 ) is at least 0.5 times the width of the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ).

13. The soil working tool as recited in claim 12 , wherein the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ) is offset transversely to the advancing direction (V) and in a direction of a force of gravity relative to the cutting edge ( 21 . 3 ) of the secondary cutting elements ( 21 ).

14. The soil working tool as recited in claim 1 , wherein the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ) is parallel to the cutting edges ( 21 . 3 ) of the secondary cutting elements ( 21 ).

15. The soil working tool as recited in claim 14 , wherein the cutting edges ( 21 . 3 ) of the secondary cutting elements ( 21 ) are flush with one another.

16. The soil working tool as recited in claim 1 , wherein the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ) is spaced at least 4 mm apart from the cutting edge ( 21 . 3 ) of each of the secondary cutting elements ( 21 ).

17. The soil working tool as recited in claim 1 , wherein the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ) is spaced at most 15 mm apart from the cutting edge ( 21 . 3 ) of each of the secondary cutting elements ( 21 ).

18. The soil working tool as recited in claim 1 , wherein the contact surface ( 14 . 2 ) or the seat surface ( 14 . 1 ) of each of the secondary cutting elements ( 21 ) and of the primary cutting element ( 20 ) are oriented parallel to one another.

19. The soil working tool as recited in claim 1 , wherein both the primary cutting element ( 20 ) and the secondary cutting elements ( 21 ) have diverting surfaces ( 20 . 4 ; 21 . 4 ) situated parallel to one another and spaced apart from one another by a distance of at least 4 mm.

20. The soil working tool as recited in claim 19 , wherein the diverting surfaces ( 20 . 4 ; 21 . 4 ) are situated at an angle to each other in a range between 0.1° and 90°.

21. The soil working tool as recited in claim 1 , wherein on the cutter holder ( 13 ), the secondary cutting elements ( 21 ) are situated symmetrical to the primary cutting element ( 20 ) and on both sides of it.

22. The soil working tool as recited in claim 1 , wherein at least two secondary cutting elements ( 21 ) are respectively situated on both sides of and abutting a flank of the primary cutting element ( 20 ).

23. The soil working tool as recited in claim 1 , wherein the width of the cutting edges ( 21 . 3 ) of the secondary cutting elements ( 21 ) is at least 0.5 times the width of the cutting edge ( 20 . 3 ) of the primary cutting element ( 20 ).

24. The soil working tool as recited in claim 1 , wherein the cutting edge ( 20 . 3 ) of the primary cutti

Assignees

• Widmaier Helmut
• Smeets Florian
• Betek Gmbh & Co Kg

Inventors

• Widmaier Helmut
• Smeets Florian

Classifications

• A01B35/26 Primary

  Rigid tools · CPC title

• A01B23/02

  Teeth; Fixing the teeth · CPC title

• A01B15/02

  Plough blades; Fixing the blades · CPC title