CN-122003318-A - Contoured cutting section of chain saw chain

Abstract

A saw chain includes a first connecting band, a first drive link coupled to the first connecting band, a second connecting band coupled to the first drive link, a second drive link coupled to the second connecting band, a third connecting band coupled to the second drive link, a first contoured cutting segment coupled to the first connecting band and having a first asymmetric profile, and a second contoured cutting segment coupled to the third connecting band and having a second asymmetric profile. The first contoured cutting segment and the second contoured cutting segment are oriented such that the first asymmetric profile and the second asymmetric profile are symmetric about the second drive link.

Inventors

• EDGAR A. DALLAS
• Isaac Safdi Miller
• ANTHONY NGUYEN

Assignees

• 奥力根工具公司

Dates

Publication Date

20260508

Application Date

20241003

Priority Date

20231004

Claims (20)

1. 1. A saw chain, comprising: a first connecting band; a first drive link coupled to the first connecting band; A second connecting band coupled to the first drive link; A second drive link coupled to the second connecting band; a third connecting band coupled to the second drive link; a first contoured cutting segment coupled to the first connecting band and having a first asymmetric profile, and A second contoured cutting segment coupled to the third connecting band and having a second asymmetric profile, wherein the first contoured cutting segment and the second contoured cutting segment are oriented such that the first asymmetric profile and the second asymmetric profile are symmetric about the second drive link.
2. 2. The saw chain of claim 1, wherein the first contoured cutting section comprises a first asymmetric tooth and a second asymmetric tooth.
3. 3. The saw chain of claim 2, wherein: The first asymmetric tooth includes a first bevel adjacent a first face, the first bevel having a larger surface area than the first face, and The second asymmetric tooth includes a second chamfer adjacent a second face, the second chamfer having a larger surface area than the second face.
4. 4. The saw chain of claim 3, wherein the first bevel is substantially parallel to the second bevel.
5. 5. The saw chain of claim 3, wherein the first contoured cutting section further comprises a third asymmetric tooth.
6. 6. The saw chain of claim 5, wherein the third asymmetric tooth includes a third bevel that abuts an end of the first contoured cutting section.
7. 7. A saw chain, comprising: a first connecting band; a contoured cutting section coupled to the first connecting band, the contoured cutting section comprising: First asymmetric teeth, and A second asymmetric tooth oriented such that the second asymmetric tooth is symmetrical with the first asymmetric tooth about a center of the contoured cutting section.
8. 8. The saw chain of claim 7, wherein: The first asymmetric tooth includes a first bevel adjacent a first face, the first bevel having a larger surface area than the first face, and The second asymmetric tooth includes a second chamfer adjacent a second face, the second chamfer having a larger surface area than the second face.
9. 9. The saw chain of claim 7, wherein the contoured cutting segment further comprises a third asymmetric tooth and a fourth asymmetric tooth.
10. 10. The saw chain of claim 9, wherein the third asymmetric tooth is oriented such that the third asymmetric tooth and the fourth asymmetric tooth are symmetrical about a center of the contoured cutting section.
11. 11. The saw chain of claim 10, wherein: The first asymmetric tooth includes a first bevel adjacent a first end of the contoured cutting section; The third asymmetric tooth includes a second bevel adjacent the first face, the second bevel having a larger surface area than the first face; The fourth asymmetric tooth includes a third chamfer adjacent the second face, the third chamfer having a larger surface area than the second face, and The second asymmetric tooth includes a fourth chamfer adjacent the second end of the contoured cutting section.
12. 12. The saw chain of claim 11, wherein: The first inclined plane being substantially parallel to the second inclined plane, and The third inclined surface is substantially parallel to the fourth inclined surface.
13. 13. The saw chain of claim 7, wherein: The first asymmetric tooth includes a first bevel adjacent a first end of the contoured cutting section, and The second asymmetric tooth includes a second bevel adjacent a second end of the contoured cutting section.
14. 14. A saw chain, comprising: a first connecting band; a first drive link coupled to the first connecting band; A second connecting band coupled to the first drive link; A second drive link coupled to the second connecting band; a third connecting band coupled to the second drive link; A first contoured cutting segment coupled to the first connecting band, the first contoured cutting segment having a first set of asymmetric teeth, and A second contoured cutting section coupled to the third connecting band, the second contoured cutting section having a second set of asymmetric teeth that are symmetrical with the first set of asymmetric teeth about the second connecting band.
15. 15. The saw chain of claim 14, wherein: the first set of asymmetric teeth includes a first asymmetric tooth and a second asymmetric tooth, and The second set of asymmetric teeth includes a third asymmetric tooth and a fourth asymmetric tooth.
16. 16. The saw chain of claim 15, wherein the first asymmetric tooth is oriented such that the fourth asymmetric tooth is symmetrical with respect to the first asymmetric tooth about the second connecting band, and the second asymmetric tooth is oriented such that the third asymmetric tooth is symmetrical with respect to the second asymmetric tooth about the second connecting band.
17. 17. The saw chain of claim 16, wherein: the first asymmetric tooth includes a first chamfer adjacent a first face, the first chamfer having a larger surface area than the first face; the second asymmetric tooth includes a second bevel adjacent a second face, the second bevel having a larger surface area than the second face; The third asymmetric tooth includes a third chamfer adjacent a third face, the third chamfer having a larger surface area than the third face, and The fourth asymmetric tooth includes a fourth chamfer adjacent a fourth face, the fourth chamfer having a larger surface area than the fourth face.
18. 18. The saw chain of claim 17, wherein: The first inclined plane being substantially parallel to the second inclined plane, and The third inclined surface is substantially parallel to the fourth inclined surface.
19. 19. The saw chain of claim 14, wherein: The first set of asymmetric teeth includes a first asymmetric tooth, a second asymmetric tooth, and a third asymmetric tooth, and The second set of asymmetric teeth includes a fourth asymmetric tooth, a fifth asymmetric tooth, and a sixth asymmetric tooth; Wherein the first asymmetric tooth is oriented such that the sixth asymmetric tooth is symmetrical with respect to the first asymmetric tooth about the second connecting band, the second asymmetric tooth is oriented such that the fifth asymmetric tooth is symmetrical with respect to the second asymmetric tooth about the second connecting band, and the third asymmetric tooth is oriented such that the fourth asymmetric tooth is symmetrical with respect to the third asymmetric tooth about the second connecting band.
20. 20. The saw chain of claim 19, wherein: the first asymmetric tooth includes a first chamfer adjacent a first face, the first chamfer having a larger surface area than the first face; the second asymmetric tooth includes a second bevel adjacent a second face, the second bevel having a larger surface area than the second face; the third asymmetric tooth includes a third chamfer adjacent an end of the first contoured cutting section; the fourth asymmetric tooth includes a fourth chamfer adjacent an end of the second contoured cutting section; the fifth asymmetric tooth includes a fifth chamfer adjacent a third face, the fifth chamfer having a larger surface area than the third face, and The sixth asymmetric tooth includes a sixth chamfer adjacent to a fourth face, the sixth chamfer having a larger surface area than the fourth face.

Description

Contoured cutting section of chain saw chain Cross Reference to Related Applications The present application enjoys priority from U.S. provisional patent application No. 63/587,807 filed on 4, 10, 2023, which is incorporated herein by reference in its entirety. Background The present disclosure relates generally to chain saws and, in particular, to saw chains suitable for use with concrete and aggregate cutting chains. The contoured cutting segments included in such saw chains may include abrasive cutting particles, such as diamond particles distributed within a three-dimensional matrix. A typical matrix for supporting abrasive cutting particles for concrete cutting is composed of a high hardness, wear resistant metallic material. For abrasive cutting particles, such as diamond, to be disposed in a matrix, the tips of the diamond particles within the surface layer of the matrix must be exposed during the process of grinding away the matrix material (known in the art as "self-sharpening") in order to effectively cut or grind the concrete. Because of the need to achieve self-sharpening, the cutting section is less efficient at cutting the concrete when the chain is initially installed, because the abrasive diamond tips are not yet exposed. Thus, it may be difficult for a user to initially cut the concrete after installing a new chain. Disclosure of Invention At least one embodiment relates to a saw chain. The saw chain includes a first connecting band, a first drive link coupled to the first connecting band, a second connecting band coupled to the first drive link, a second drive link coupled to the second connecting band, a third connecting band coupled to the second drive link, a first contoured cutting segment coupled to the first connecting band and having a first asymmetric profile, and a second contoured cutting segment coupled to the third connecting band and having a second asymmetric profile. The first contoured cutting segment and the second contoured cutting segment are oriented such that the first asymmetric profile and the second asymmetric profile are symmetric about the second drive link. Another embodiment relates to a chain saw including a saw chain. The saw chain includes a first connecting band and a contoured cutting segment coupled to the first connecting band. The contoured cutting segment includes a first asymmetric tooth and a second asymmetric tooth. The second asymmetric tooth is oriented such that the second asymmetric tooth is symmetrical with the first asymmetric tooth about a center of the contoured cutting section. Another embodiment relates to a saw chain that includes a first connecting band, a first drive link coupled to the first connecting band, a second connecting band coupled to the first drive link, a second drive link coupled to the second connecting band, a third connecting band coupled to the second drive link, a first contoured cutting segment coupled to the first connecting band, and a second contoured cutting segment coupled to the third connecting band. The first contoured cutting section has a first set of asymmetric teeth. The second contoured cutting segment has a second set of asymmetric teeth. The second set of asymmetric teeth is symmetrical with the first set of asymmetric teeth about the second connecting band. This summary is illustrative only and is not intended to be in any way limiting. Drawings The present disclosure will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which like reference numerals refer to like elements, and in which: Fig. 1 is a perspective view of a chain saw having a saw chain with contoured cutting segments, according to some embodiments. Fig. 2 is a perspective view of a portion of the saw chain of fig. 1, in accordance with certain embodiments. Fig. 3 is a side view of the saw chain of fig. 2, according to some embodiments. Fig. 4 is another side view of the saw chain of fig. 2, in accordance with certain embodiments. Fig. 5 is a top view of the saw chain of fig. 2, in accordance with certain embodiments. Fig. 6 is a bottom view of the saw chain of fig. 2 in accordance with certain embodiments. FIG. 7 is a front end view of the saw chain of FIG. 2, in accordance with certain embodiments. FIG. 8 is a rear end view of the saw chain of FIG. 2 in accordance with certain embodiments. FIG. 9 is a perspective view of a contoured cutting segment of the saw chain of FIG. 2, in accordance with certain embodiments. Fig. 10 is a side view of the wave-shaped profile cut segment of fig. 9, according to some embodiments. FIG. 11 is a perspective view of a portion of the saw chain of FIG. 1, in accordance with certain embodiments. Fig. 12 is a side view of the saw chain of fig. 11, in accordance with certain embodiments. Fig. 13 is another side view of the saw chain of fig. 11, in accordance with certain embodiments. Fig. 14 is a top view of the saw chain of fig. 11, in a