Cutting tooth system for a disk-saw felling head

Patent metadata

Field	Value
Publication number	US-10940550-B2
Application number	US-201815984889-A
Country	US
Kind code	B2
Filing date	May 21, 2018
Priority date	May 21, 2018
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

A cutting tooth system for a disk of a disk-saw felling head. The disk defines a receiving portion and an axis of rotation. The cutting tooth system comprises at least one cutting tooth. The cutting tooth comprises a first portion defining a first protrusion and a second protrusion. The first portion is configured to be received in the receiving portion for rotation with the disk. A second portion defines a chip removal path and a cutting edge adjacent the chip removal path. A first retaining device is configured to couple to the disk to secure the first protrusion in the receiving portion. A second retaining device is configured to couple to the disk to secure the second protrusion in the receiving portion.

First claim

What is claimed is:

1. A cutting tooth system for a disk of a disk-saw felling head, the disk defining a receiving portion and an axis of rotation, the cutting tooth system comprising:
at least one cutting tooth comprising:
a first portion defining a first protrusion protruding in one direction and a second protrusion protruding in another direction, the first portion configured to be received in the receiving portion for rotation with the disk; and
a second portion defining a chip removal path and a cutting edge adjacent the chip removal path;
a first retaining device configured to couple to the disk to engage an outer edge of the first protrusion positioned outward relative to the axis of rotation and prevent the first protrusion from moving radially outward from the receiving portion; and
a second retaining device configured to couple to the disk to engage an outer edge of the second protrusion positioned outward relative to the axis of rotation and prevent the second protrusion from moving radially outward from the receiving portion;
wherein with a cooperation between the first protrusion engaging the outer edge of the first protrusion and the outer edge of the second protrusion engaged by the second retaining device, the at least one cutting tooth is secured on the disk;
wherein the second portion is curved and forms a concave surface that defines the chip removal path.

2. The cutting tooth system of claim 1 , wherein the first protrusion comprises a first curved portion configured for receiving the first retaining device that is cylindrically shaped, and with the first protrusion protruding in the one direction, the first curved portion extending to form the outer edge of the first protrusion.

3. The cutting tooth system of claim 1 , wherein the second protrusion comprises a second curved portion configured for receiving the second retaining device that is cylindrically shaped.

4. The cutting tooth system of claim 1 , wherein the second retaining device comprises a notch positioned to receive the second protrusion with an upper portion of the notch engaging with a top surface of the second protrusion and with a lower portion of the notch engaging the bottom surface of the second protrusion so as to prevent the second protrusion from moving in an axial direction.

5. The cutting tooth system of claim 1 , wherein the at least one cutting tooth is a first cutting tooth positioned with a first chip removal path positioned in a downward axial direction, further comprising a second cutting tooth positioned with a second chip removal path positioned in an upward axial direction.

6. The cutting tooth system of claim 1 , wherein the first retaining device is configured to engage a first side edge of the first portion and the second retaining device is configured to engage a second side edge of the first portion opposite the first side edge so as to circumferentially limit the first portion between the first retaining device and the second retaining device.

7. A disk-saw felling head comprising:
a disk defining a receiving portion and an axis of rotation;
a cutting tooth system comprising:
at least one cutting tooth comprising:

 a first portion defining a first protrusion protruding in one direction and a second protrusion protruding in another direction, the first portion configured to be received in the receiving portion for rotation with the disk; and
 a second portion defining a chip removal path and a cutting edge adjacent the chip removal path;
 a first retaining device coupled to the disk to engage an outer edge of the first protrusion positioned outward relative to the axis of rotation and prevent the first protrusion from moving radially outward from the receiving portion; and
 a second retaining device coupled to the disk to engage an outer edge of the second protrusion positioned outward relative to the axis of rotation and prevent the second protrusion from moving radially outward from the receiving portion;
 wherein with a cooperation between the first protrusion engaging the outer edge of the first protrusion and the outer edge of the second protrusion engaged by the second retaining device, the at least one cutting tooth is secured on the disk;
 wherein the second portion is curved and forms a concave surface that defines the chip removal path.

8. The disk saw felling head of claim 7 , wherein the first protrusion comprises a first curved portion configured for receiving the first retaining device that is cylindrically shaped, and with the first protrusion protruding in the one direction, the first curved portion extending to form the outer edge of the first protrusion.

9. The disk saw felling head of claim 7 , wherein the second protrusion comprises a second curved portion configured for receiving the second retaining device that is cylindrically shaped.

10. The disk saw felling head of claim 7 , wherein the second retaining device comprises a notch positioned to receive the second protrusion with an upper portion of the notch engaging with a top surface of the second protrusion and with a lower portion of the notch engaging the bottom surface of the second protrusion so as to prevent the second protrusion from moving in an axial direction.

11. The disk saw felling head of claim 7 , wherein the at least one cutting tooth is a first cutting tooth positioned with a first chip removal path positioned in a downward axial direction, further comprising a second cutting tooth positioned with a second chip removal path positioned in an upward axial direction.

12. The disk saw felling head of claim 7 , wherein the first retaining device is configured to engage a first side edge of the first portion and the second retaining device is configured to engage a second side edge of the first portion opposite the first side edge so as to circumferentially limit the first portion between the first retaining device and the second retaining device.

13. A method for coupling a cutting tooth system to a disk of a disk-saw felling head, the disk defining a receiving portion and an axis of rotation, the method comprising:
providing at least one cutting tooth comprising a first portion defining a first protrusion protruding in one direction and a second protrusion protruding in another direction, the first portion configured to be received in the receiving portion for rotation with the disk, and a second portion defining a chip removal path and a cutting edge adjacent the chip removal path;
providing a first retaining device coupled to the disk to engage an outer edge of the first protrusion positioned outward relative to the axis of rotation and prevent the first protrusion from moving radially outward from the receiving portion; and
providing a second retaining device coupled to the disk to engage an outer edge of the second protrusion positioned outward relative to the axis of rotation and prevent the second protrusion from moving radially outward from the receiving portion;
wherein with a cooperation between the first protrusion engaging the outer edge of the first protrusion and the outer edge of the second protrusion engaged by the second retaining device, the at least one cutting tooth is secured on the disk;
wherein the second portion is curved and forms a concave surface that defines the chip removal path.

14. The method of claim 13 , wherein the first protrusion comprises a first curved portion configured for receiving the first retaining device that is cylindrically shaped, and with the first protrusion protruding in the one direction, the first curved portion extending to form the outer edge of the first protrusion.

Assignees

• Deere & Co

Inventors

• Breutzman Mark E

Classifications

• A01G23/091 Primary

  Sawing apparatus specially adapted for felling trees (A01G23/081, A01G23/083, A01G23/093 take precedence) · CPC title

• A01G23/08 Primary

  Felling trees · CPC title

• A01G23/081

  Feller-bunchers, i.e. with bunching by felling head (A01G23/083 takes precedence) · CPC title

• B23D61/06 Primary

  in exchangeable arrangement · CPC title

• B23D61/025

  Details of saw blade body · CPC title