Wave-shaped cutting section of chain saw chain

Abstract

Provided is a saw chain. Comprising a first connecting belt, a first driving chain link coupled to the first connecting belt, a second connecting belt coupled to the first driving chain link, a second driving chain link coupled to the second connecting belt, and a third connecting belt coupled to the second driving chain link, a first contoured cut section is coupled to the first connecting band and has a first asymmetric profile, and a second contoured cut section is coupled to the third connecting band and has a second asymmetric profile. The first contoured cut section and the second contoured cut section are oriented such that the first asymmetric profile and the second asymmetric profile are symmetric about the second drive link.

Description

[0001] Cross-references to related applications This application claims priority to U.S. Provisional Patent Application No. 63 / 587,807, filed on October 4, 2023, the entire contents of which are hereby incorporated by reference. Background Technology

[0002] This disclosure generally relates to chainsaws, and more specifically to chainsaws suitable for cutting concrete and aggregates. The wavy-shaped cutting segments contained in such chains may include abrasive cutting particles, such as diamond particles distributed within a three-dimensional matrix. A typical matrix supporting the abrasive cutting particles used for cutting concrete is made of a high-hardness, wear-resistant metallic material. For abrasive cutting particles such as diamond embedded in the matrix, in order to effectively cut or grind concrete, the tips of the diamond particles within the surface layer of the matrix must be exposed as the matrix material is worn away (referred to in the art as "self-sharpening"). Due to the need for self-sharpening, the cutting segments are less efficient at cutting concrete during initial chain installation because the abrasive diamond tips are not yet exposed. Therefore, users may initially find it difficult to cut concrete after installing a new chain. Summary of the Invention

[0003] At least one embodiment relates to a saw chain. The saw chain includes a first connecting belt, a first drive link coupled to the first connecting belt, a second connecting belt coupled to the first drive link, a second drive link coupled to the second connecting belt, a third connecting belt coupled to the second drive link, a first wavy-shaped cut segment coupled to the first connecting belt and having a first asymmetrical profile, and a second wavy-shaped cut segment coupled to the third connecting belt and having a second asymmetrical profile. The first and second wavy-shaped cut segments are oriented such that the first asymmetrical profile and the second asymmetrical profile are symmetrical about the second drive link.

[0004] Another embodiment relates to a chainsaw including a saw chain. The saw chain includes a first connecting band and a wavy-shaped cutting segment coupled to the first connecting band. The wavy-shaped cutting segment includes a first asymmetrical tooth and a second asymmetrical tooth. The second asymmetrical tooth is oriented such that it is symmetrical to the first asymmetrical tooth about the center of the wavy-shaped cutting segment.

[0005] Another embodiment relates to a saw chain, comprising a first connecting belt, a first drive link coupled to the first connecting belt, a second connecting belt coupled to the first drive link, a second drive link coupled to the second connecting belt, a third connecting belt coupled to the second drive link, a first wavy-shaped cutting segment coupled to the first connecting belt, and a second wavy-shaped cutting segment coupled to the third connecting belt. The first wavy-shaped cutting segment has a first set of asymmetrical teeth. The second wavy-shaped cutting segment has a second set of asymmetrical teeth. The second set of asymmetrical teeth is symmetrical to the first set of asymmetrical teeth about the second connecting belt.

[0006] The content of this invention is merely exemplary and not intended to be limiting. Attached Figure Description

[0007] This disclosure will be more fully understood by reading the following detailed description in conjunction with the accompanying drawings, in which like reference numerals denote like elements, as shown in the drawings: Figure 1 This is a perspective view of a chainsaw having a saw chain with a wavy cutting section, according to certain embodiments.

[0008] Figure 2 According to certain embodiments Figure 1 A three-dimensional view of a section of the saw chain.

[0009] Figure 3 According to certain embodiments Figure 2 Side view of the saw chain.

[0010] Figure 4 According to certain embodiments Figure 2 Another side view of the saw chain.

[0011] Figure 5 According to certain embodiments Figure 2 A top view of the saw chain.

[0012] Figure 6 According to certain embodiments Figure 2 A bottom view of the saw chain.

[0013] Figure 7 According to certain embodiments Figure 2 Front view of the saw chain.

[0014] Figure 8 According to certain embodiments Figure 2 Rear view of the saw chain.

[0015] Figure 9 According to certain embodiments Figure 2 A three-dimensional view of the wavy-shaped cutting segment of the medium saw chain.

[0016] Figure 10 According to certain embodiments Figure 9 Side view of the wavy-shaped cut segment.

[0017] Figure 11 According to certain embodiments Figure 1 A three-dimensional view of a section of the saw chain.

[0018] Figure 12 According to certain embodiments Figure 11 Side view of the saw chain.

[0019] Figure 13 According to certain embodiments Figure 11 Another side view of the saw chain.

[0020] Figure 14 According to certain embodiments Figure 11 A top view of the saw chain.

[0021] Figure 15 According to certain embodiments Figure 11 A bottom view of the saw chain.

[0022] Figure 16 According to certain embodiments Figure 11 Front view of the saw chain.

[0023] Figure 17 According to certain embodiments Figure 11 Rear view of the saw chain.

[0024] Figure 18 According to certain embodiments Figure 11 A three-dimensional view of the wavy-shaped cutting segment of the medium saw chain.

[0025] Figure 19 According to certain embodiments Figure 11 A side view of the wavy-shaped cutting section of the medium saw chain.

[0026] Figure 20 According to certain embodiments Figure 11 A top view of the wavy-shaped cutting section of the medium saw chain.

[0027] Figure 21 According to certain embodiments Figure 1 A three-dimensional view of the wavy-shaped cutting segment of the medium saw chain.

[0028] Figure 22 According to certain embodiments Figure 21 A side view of the wavy-shaped cutting section of the medium saw chain.

[0029] Figure 23 According to certain embodiments Figure 21 A top view of the wavy-shaped cutting section of the medium saw chain. Detailed Implementation

[0030] Referring generally to the accompanying drawings, various views of a concrete cutting chainsaw, a saw chain for cutting concrete and other aggregate materials, and a corrugated cutting segment of the saw chain are shown according to various embodiments. As described in further detail below, the teachings of this document relate to a corrugated cutting segment that minimizes initial surface contact with the workpiece to be cut (e.g., concrete), thereby increasing cutting pressure and rapidly eroding the matrix material to quickly expose the cutting tip of an abrasive element, such as diamond, supported within the matrix. Self-sharpening is achieved much faster than with conventional designs as the supporting matrix is ​​worn down and the cutting tip of the abrasive element is exposed. According to the teachings of this document, each corrugated cutting segment is asymmetrical about its transverse axis. Such corrugated cutting segments can then be fitted to the saw chain and arranged in alternating orientations such that a line of symmetry is formed between adjacent corrugated cutting segments on the chain (e.g., between cutting links), providing both performance advantages and allowing the user to mount the chain for rotation in any direction. Therefore, the teachings of this document facilitate user-friendly installation and reduce the time and energy required for self-sharpening, enabling the saw chain to be quickly and fully deployed in concrete cutting and / or other applications.

[0031] Please see now Figure 1 This illustrates a chainsaw 100 according to certain embodiments. For example... Figure 1 The chainsaw 100 shown is configured for cutting concrete and other similar materials (e.g., asphalt, aggregates, etc.). The chainsaw 100 includes a body 102, a guide plate 104 coupled to and extending from the body 102, and a saw chain 106 coupled to the guide plate 104 and extending along the outer edge of the guide plate 104 (e.g., in a closed loop). The body 102 includes a motor (e.g., an internal combustion engine, an electric motor) operable to rotate the saw chain 106 about the outer edge of the guide plate 104, such that the saw chain 106 rotates about the guide plate 104 during operation of the chainsaw 100. The saw chain 106 includes wavy-shaped cutting segments or links (e.g., as described in detail below) with sharp or rough portions, such that when driven to rotate about the guide plate 104, the saw chain 106 can cut, grind, etc., external objects, materials, etc. The chainsaw 100 may also include irrigation functions for lubricating and cooling the chain and otherwise facilitating high-power cutting and grinding operations of the chainsaw 100.

[0032] Please see now Figures 2 to 8The diagram shows different views of a saw chain 106 according to certain embodiments. The saw chain 106 is configured to cut concrete and aggregate when used with a chainsaw 100. The saw chain 106 includes drive links 200 coupled to connecting bands 202 via rivets 204. Each drive link 200 includes an extension extending from the saw chain 106, configured to insert into a groove provided on the outer edge of a guide plate 104. The drive links 200 couple the saw chain 106 to the guide plate 104 and provide an interface to a motor or the like of the chainsaw 100, allowing the saw chain 106 to be driven to rotate about the guide plate 104 during operation of the chainsaw 100. The drive links 200 are coupled to each other via connecting bands 202 located on both sides of the drive links 200. The connecting bands 202 connect the drive links 200 together, allowing the saw chain 106 to be assembled into a loop. Drive links 200 and connecting straps 202 are coupled by rivets 204, which serve as connectors for different parts of the saw chain 106. As shown in the disclosed embodiment, each drive link 200 has a connecting strap 202 on each side, and a rivet 204 couples each combination of drive link 200 and connecting strap 202 (i.e., one drive link 200 and two connecting straps 202, such that each drive link 200 is coupled to two rivets 204, and each connecting strap 202 is coupled to two rivets 204). Specifically, as shown, the saw chain 106 includes a first connecting strap 224 coupled to a first drive link 225 via rivets 204, a second connecting strap 226 coupled to the first drive link 225 via rivets 204, a second drive link 227 coupled to the second connecting strap 226 via rivets 204, and a third connecting strap 228 coupled to the second drive link 227 via rivets.

[0033] The saw chain 106 also includes a wavy-shaped cutting section 205, which includes a first section 206 coupled to a first connecting band 224 and a second section 208 coupled to a third connecting band 228. Section 205 is coupled to the connecting band 202 and is located on the top side of the connecting band 202 (e.g., as shown in the image). Figure 1(As shown, during installation, the segment 205 is positioned away from the guide plate 104). As illustrated, the segment 205 is coupled to every other connecting strip 202 via a fastening process such as welding. However, in other embodiments, the segment 205 may be coupled by other means (e.g., sintering, bonding, etc.), and the distribution pattern of the segment 205 along the connecting strip 202 and drive link 200 may vary depending on cutting conditions and requirements. For example, in some embodiments, continuous connecting strips 202 may have segments 205 coupled therein. In other embodiments, every third, fourth, fifth, etc., connecting strip 202 has segments 205 coupled therein (other connecting strips 202 do not have segments 205). In some embodiments, the segment 205 is made of a high-hardness, wear-resistant material; one example is a metal matrix made of cobalt. Diamond particles are distributed within this three-dimensional metal matrix, for example, substantially uniformly distributed throughout the matrix. During manufacturing, the top surface of segment 205 can be formed to primarily present a metallic material; however, the diamond particles beneath the substrate surface layer must be exposed for effective cutting by segment 205, as the diamond particles provide friction, abrasion, scraping, and grinding effects, and are generally harder than concrete or other materials cut by saw chain 106. Segment 205 enables the effective exposure of these diamond particles during the initial use of the saw chain (i.e., through self-sharpening), as described in further detail below.

[0034] The wavy-shaped cut segments 205 are shown to include teeth, with each segment 205 comprising a plurality of teeth. Specifically, as shown, the first segment 206 includes a first tooth 212, a second tooth 214, and a third tooth 216, which define the top surface of the first segment 206 and are arranged in series such that the second tooth 214 is located between the first tooth 212 and the third tooth 216. The geometry of the first tooth 212, the second tooth 214, and the third tooth 216 according to various embodiments will be referred to below. Figure 9-10 Further detailed description. Similarly, the second segment 208 is shown as including a fourth tooth 218, a fifth tooth 220, and a sixth tooth 222, which define the top surface of the second segment 208 and are arranged in series such that the fifth tooth 220 is located between the fourth tooth 218 and the sixth tooth 222. The geometry of the fourth tooth 218, the fifth tooth 220, and the sixth tooth 222 according to various embodiments will be referred to below. Figure 9-11 Further details. From Figure 3-4 Viewed from the side, the teeth are asymmetrical, therefore each segment 205... Figure 3-4 The side view is also asymmetrical. As shown, the first segment 206 contains the same number of teeth as the second segment 208, but in other embodiments, segment 205 may contain a different number of teeth than shown (e.g., two teeth, four teeth, etc.).

[0035] Segment 205 is configured to promote self-sharpening. Specifically, segment 205 is configured to minimize the initial surface contact between the segment and the concrete, which increases cutting pressure and rapidly erodes the matrix without compromising the structural integrity of segment 205. Therefore, compared to other possible configurations of diamond segments in a concrete cutting chain, the diamond tip in segment 205 is exposed for cutting more quickly, especially considering the specific tooth arrangement described in further detail below.

[0036] Segment 205 is arranged in a pattern along saw chain 106. The second segment 208 is oriented relative to the first segment 206, making it a mirror image of the first segment 206 (e.g., oriented in the opposite direction to the axis of the first segment 206). In detail, Figure 2-6 A first connecting band 224, a second connecting band 226, and a third connecting band 228 are shown in series coupling, with the second connecting band 226 between the first connecting band 224 and the third connecting band 228. The center of the second connecting band 226 defines a vertical line of symmetry 210 (i.e., in the plane of the saw chain 106 and perpendicular to the saw chain cutting direction, a reflection line, etc.). The first segment 206 coupled to the first connecting band 224 is oriented as a mirror image of the second segment 208 (which is coupled to the third connecting band 228), i.e., such that the saw chain 106 is symmetrical about the line of symmetry 210. This pattern is repeated over the entire length of the saw chain 106, such that each wavy-shaped cutting segment 205 is oriented in the opposite direction to its two adjacent segments 205.

[0037] As shown in the figure, due to this symmetry, the teeth also appear as if they have been mirrored by the reflection ray 210. For example, the first tooth 212 of the first segment 206 and the fourth tooth 218 of the second segment 208 are symmetrical about the reflection ray 210, the second tooth 214 of the first segment 206 and the fifth tooth 220 are symmetrical about the reflection ray, and the third tooth 216 of the first segment 206 and the sixth tooth 222 of the second segment 208 are symmetrical about the reflection ray 210.

[0038] Setting segment 205 in this pattern (e.g., in alternating directions) enables saw chain 106 to function as a bidirectional cutting chain, i.e., to cut concrete regardless of whether the cutting chain is driven in a first longitudinal direction or the opposite second longitudinal direction. Advantageously, saw chain 106 can be coupled to guide plate 104 in either direction, thereby reducing user installation errors of saw chain 106 and otherwise improving the usability of saw chain 106. In other embodiments, various other orientation patterns of segment 205 may be employed, and / or segment 205 may be set to the same orientation.

[0039] from Figure 7-8As can be seen in the end view, the first segment 206 includes a first end 700 and a second end 800 opposite to the first end 700. As shown, the first end 700 and the second end 800 are generally rectangular (e.g., square), but their shapes may vary depending on the embodiment (e.g., curved, oblong, triangular, etc.). As shown, the surface area of ​​the second end 800 is larger than the surface area of ​​the first end 700.

[0040] As shown in the figure, the first segment 206 also includes a first side 900 and a second side 902 opposite to the first side 900, the first side and the second side 902 extending from the first end 700 to the second end 800. The first side 900 is perpendicular to the first end 700 and the second end 800, the second side 902 is perpendicular to the first end 700 and the second end 800, and the first side 900 is parallel to the second side 902. The first segment 206 can be a basic solid block defined by the first side 900, the second side 902, the first end 700 and the second end 800.

[0041] As shown in the figure, the lengths of the first side 900 and the second side 902 are approximately 0.68 inches (e.g., between 0.60 and 0.80 inches), and the lengths of the first end 700 and the second end 800 are approximately 0.225 inches (e.g., between 0.20 and 0.30 inches). In other embodiments, these dimensions may be smaller or larger depending on the size of the chainsaw 100, the chainsaw chain 106, and the material being cut.

[0042] Please see now Figure 9-10 The image shows a close-up view of a first wavy-shaped cut segment 206 according to certain embodiments. The first segment 206 includes a first bevel 904 extending from a first end 700 to a first surface 910 of the first segment 206. The first surface 910 is angled downward relative to the first bevel 904, such that the first bevel 904 and the first surface 910 combine to form a first tooth 212. The first segment 206 also includes a second bevel 906 extending from a transition or corner 914 between the first surface 910 and the second bevel 906 to a second surface 912 of the first segment 206. The second surface 912 is angled relative to the second bevel 906, such that the second bevel 906 and the second surface 912 combine to form a second tooth 214. The first segment 206 also includes a third bevel 908 extending from a transition or corner 916 between the second surface 912 and the third bevel 908 to a second end 800. As shown in the figure, the surface area of ​​the first inclined plane 904 is larger than that of the first surface 910, the surface area of ​​the second inclined plane 906 is larger than that of the second surface 912 (for example, approximately twice the latter), and the surface area of ​​the third inclined plane 908 is substantially similar to that of the first inclined plane 904 and the second inclined plane 906. Thus, the first cut segment has an asymmetrical profile.

[0043] like Figure 10 As shown, the first inclined plane 904 is oriented relative to the tooth base plane 1000, such that a first inclined plane angle 1002 is defined between the tooth base plane 1000 and the first inclined plane 904 (located inside the first segment 206). The second inclined plane 906 is oriented relative to the tooth base plane 1000, such that a second inclined plane angle 1004 is defined between the tooth base plane 1000 and the second inclined plane 906. The third inclined plane 908 is oriented relative to the tooth base plane 1000, such that a third inclined plane angle 1006 is defined between the tooth base plane 1000 and the third inclined plane 908. As shown, the inclined plane angles 1002, 1004, and 1006 are approximately 20 degrees and can be substantially equal, such that the inclined planes 904, 906, and 908 are approximately parallel to each other. Other embodiments may include different ramp angles 1002, 1004, 1006, ranging from 10 degrees to 35 degrees. For example, each ramp angle 1002, 1004, 1006 may have substantially the same value, or different ramp angles 1002, 1004, 1006 may have different values. Similarly, other embodiments may include ramps of different lengths, which may result in different ramp angles.

[0044] Each transition or corner 914, 916 is shown as a curve with a radius. As shown, the first corner 914 and the second corner 916 have substantially the same radius; however, in other embodiments, corners 914, 916 may have different radii, for example, between 0.05 inches and 0.25 inches, such as 0.01 inches.

[0045] A first face 910 is oriented relative to a first inclined plane 904, such that a first facet angle 1008 is defined between the first inclined plane 904 and the first face 910 (located inside the first segment 206). A second face 912 is oriented relative to a second inclined plane 906, such that a second facet angle 1010 is defined between the second inclined plane 906 and the second face 912 (located inside the first segment 206). A second end 800 is oriented relative to a third inclined plane 908, such that a third facet angle 1012 is defined between the third inclined plane 908 and the second end (located inside the first segment 206). The first facet angle 1008 and the second facet angle 1010 are acute angles of approximately 90 degrees, and are substantially equal as shown (but may be different in other embodiments). In some embodiments, the values ​​of the first facet angle 1008 and the second facet angle 1010 are between 70 degrees and 90 degrees.

[0046] As shown in the figure, the third facet 1012 differs from (specifically, is smaller than) the first facet 1008 and the second facet 1010 because the third inclined plane 908 is adjacent to the second end 800, rather than to another face. In other embodiments, the third inclined plane 908 may be adjacent to another face extending from the third inclined plane 908 to the second end 800. In the illustrated embodiment, the third facet 1012 is approximately 20 degrees, but in various embodiments, the third facet 1012 may range from 10 degrees to 35 degrees.

[0047] Advantageously, the arrangement of faces 910, 912, corners 914, 916, and bevels 904, 906, 908 minimizes the initial surface contact between the wavy-shaped cutting segments and the workpiece while maintaining the structural integrity of the first segment 206. This allows for faster self-sharpening (compared to other designs), exposing the diamond tip of the first segment 206 more quickly, thus enabling the saw chain 106 to operate efficiently from the first use. The second segment 208 and / or various other segments 205 of the saw chain 106 can be configured to be substantially the same as the first segment 206. Thus, the saw chain 106 has a plurality of wavy-shaped cutting segments 205, each segment 205 having the asymmetrical profile described for the first segment 206, and arranged as shown above and in the figures. In experimental tests of initial performance upon delivery, the saw chain 106, as taught in this paper, cut 33.6% more concrete in the first and second cuts during initial use compared to the conventional design, and cut 58.9% more concrete in the first, second, and third cuts during initial use compared to the conventional design, thus demonstrating improved self-sharpening and performance in initial use.

[0048] Please see now Figures 11 to 17 The image shows different views of the saw chain 106 according to certain embodiments. In this embodiment, segment 1014 includes a first tooth 1016, a second tooth 1018, a third tooth 1020, and a fourth tooth 1022. From Figure 12-13 Viewed from the side, the first tooth 1016 is symmetrical to the fourth tooth 1022, and the second tooth 1018 is symmetrical to the third tooth 1020. Therefore, each segment 1014 is from... Figure 12-13 The side view is also symmetrical. The first tooth 1016 is asymmetrical with the second tooth 1018, and the third tooth 1020 is asymmetrical with the fourth tooth 1022. As shown, each cut segment 1014 contains the same number of teeth, but in other embodiments, each segment 1014 may contain a different number of teeth than shown (e.g., two teeth, six teeth, etc.).

[0049] The center of the cutting segment 1014 defines a vertical line of symmetry 1024 (i.e., in the plane of the saw chain 106 and perpendicular to the cutting direction of the saw chain). The first tooth 1016 is oriented to be a mirror image of the fourth tooth 1022, and the second tooth 1018 is oriented to be a mirror image of the third tooth 1020, i.e., such that segment 1014 is symmetrical about the line of symmetry 1024. Figure 2-10 In this embodiment, each segment 1014 is symmetrical to the next segment 1014 along the saw chain 106 about a line of symmetry passing through the drive link 220 between the two segments 1014. That is, with respect to the drive link 220 between the two cut segments, the first tooth 1016 is symmetrical to the fourth tooth 1022 of the adjacent segment 1014, the second tooth 1018 is symmetrical to the third tooth 1020 of the adjacent segment 1014, the third tooth 1020 is symmetrical to the second tooth 1018 of the adjacent segment 1014, and the fourth tooth 1022 is symmetrical to the first tooth 1016 of the adjacent segment 1014.

[0050] Setting up segment 1014 in this pattern (e.g., providing multiple asymmetrical teeth on a single segment to create segments symmetrical about a line of symmetry 1024 passing through segment 1014) enables the saw chain 106 to be used as a bidirectional cutting chain. Advantageously, this embodiment will Figures 2 to 8 Multiple asymmetrical segments in the chain are integrated into a single symmetrical segment, which can reduce manufacturing time when assembling the chain.

[0051] from Figure 16-17 As can be seen in the end view, segment 1014 includes a first end 1025 and a second end 1026 opposite to the first end 1025. As shown, the first end 1025 and the second end 1026 are generally rectangular (e.g., square), but according to embodiments, their shapes may be different (e.g., curved, oblong, triangular, etc.). As shown, the surface area of ​​the first end 1025 is equal to the surface area of ​​the second end 1026.

[0052] Please see now Figure 18-20 The diagram shows a close-up view of segment 1014 according to certain embodiments. Segment 1014 also includes a first side 1028 and a second side 1030 opposite to the first side 1028, the first side 1028 and the second side 1030 extending from a first end 1025 to a second end 1026. The first side 1028 is perpendicular to the first end 1025 and the second end 1026, and the second side 1030 is perpendicular to the first end 1025 and the second end 1026, and the first side 1028 is parallel to the second side 1030. Segment 1014 may be a basic solid block defined by the first side 1028, the second side 1030, the first end 1025 and the second end 1026.

[0053] Segment 1014 includes a first inclined surface 1032 extending from a first end 1025 to a first face 1040 of segment 1014. The first inclined surface 1032 is angled relative to the first end 1025 to form a first tooth 1016. The first face 1040 is angled upward relative to the first inclined surface 1032. Segment 1014 also includes a second inclined surface 1034 extending from a transition or corner 1044 between the first face 1040 and the second inclined surface 1034. The second inclined surface 1034 is angled relative to the first face 1040 such that the first face 1040 and the second inclined surface 1034 form a second tooth 1018. Segment 1014 also includes a third inclined surface 1036 extending from the second inclined surface 1034, as shown in the figure, from a point intersected by a line of symmetry 1024. The third inclined surface 1036 is angled upward relative to the second inclined surface 1034. Segment 1014 also includes a second surface 1042. The second surface 1042 extends from the transition or corner 1046 between the third inclined surface 1036 and the second surface 1042. The second surface 1042 is angled relative to the third inclined surface 1036, such that the second surface 1042 and the third inclined surface 1036 form a third tooth 1020. Segment 1014 also includes a fourth inclined surface 1038. The fourth inclined surface 1038 extends from the second surface 1042 to the second end 1026. The fourth inclined surface 1038 is angled upwards relative to the second surface 1042. The fourth inclined surface 1038 is angled relative to the second end 1026, such that the fourth inclined surface 1038 and the second end 1026 form a fourth tooth 1022. As shown, the surface area of ​​the first inclined surface 1032 is larger than the surface area of ​​the second inclined surface 1034, and the surface area of ​​the second inclined surface 1034 is larger than the surface area of ​​the first surface 1040. The surface area of ​​the first inclined plane 1032 is equal to the surface area of ​​the fourth inclined plane 1038, the surface area of ​​the second inclined plane 1034 is equal to the surface area of ​​the third inclined plane 1036, and the surface area of ​​the first surface 1040 is equal to the surface area of ​​the second surface 1042. Thus, segment 1014 has a symmetrical profile.

[0054] like Figure 19As shown, the first inclined plane 1032 is oriented relative to the tooth base plane 1047, such that a first inclined plane angle 1048 is defined between the tooth base plane 1047 and the first inclined plane 1032 (located inside segment 1014). The second inclined plane 1034 is oriented relative to the tooth base plane 1047, such that a second inclined plane angle 1050 is defined between the tooth base plane 1047 and the second inclined plane 1034 (located inside segment 1014). The third inclined plane 1036 is oriented relative to the tooth base plane 1047, such that a third inclined plane angle 1052 is defined between the tooth base plane 1047 and the third inclined plane 1036 (located inside segment 1014). The fourth inclined plane 1038 is oriented relative to the tooth base plane 1047, such that a fourth inclined plane angle 1054 is defined between the tooth base plane 1047 and the fourth inclined plane 1038 (located inside segment 1014). As shown in the figure, the ramp angles 1048, 1050, 1052, and 1054 are approximately 20 degrees and are substantially equal, such that ramps 1032 and 1034 are substantially parallel to each other, and ramps 1036 and 1038 are substantially parallel to each other. Other embodiments may include different ramp angles 1048, 1050, 1052, and 1054, ranging from 10 degrees to 35 degrees, for example, each ramp angle 1048, 1050, 1052, and 1054 may have substantially the same value, or different ramp angles 1048, 1050, 1052, and 1054 may have different values. Similarly, other embodiments may include ramps of different lengths, which may result in different ramp angles.

[0055] Each transition or corner 1044, 1046 is shown as a curve with a radius. As shown, the first corner 1044 and the second corner 1046 have substantially the same radius; however, in other embodiments, corners 1044, 1046 may have different radii, for example, between 0.05 inches and 0.25 inches, such as about 0.01 inches.

[0056] The first inclined plane 1032 is oriented relative to the first end 1025 such that a first facet angle 1056 is defined between the first inclined plane 1032 and the first end 1025 (located inside segment 1014). The first facet 1040 is oriented relative to the second inclined plane 1034 such that a second facet angle 1058 is defined between the first facet 1040 and the second inclined plane 1034 (located inside segment 1014). The second facet 1042 is oriented relative to the third inclined plane 1036 such that a third facet angle 1060 is defined between the second facet 1042 and the third inclined plane 1036 (located inside segment 1014). The fourth inclined plane 1038 is oriented relative to the second end 1026 such that a fourth facet angle 1062 is defined between the second end 1026 and the fourth inclined plane (located inside segment 1014). The second facet angle 1058 and the third facet angle 1060 are acute angles of approximately 90 degrees, and are substantially equal as shown (but may be different in other embodiments). In some embodiments, the values ​​of the second facet angle 1058 and the third facet angle 1060 are between 60 degrees and 90 degrees.

[0057] As shown in the figure, the first facet angle 1056 and the fourth facet angle 1062 are different from (specifically, smaller than) the second facet angle 1058 and the third facet angle 1060 because the first inclined plane 1032 and the fourth inclined plane 1038 are adjacent to the first end 1025 and the second end 1026, rather than to another face. The first facet angle 1056 and the fourth facet angle 1062 are acute angles of approximately 90 degrees, and as shown in the figure, they are substantially equal (but may be different in other embodiments). In some embodiments, the values ​​of the first facet angle 1056 and the fourth facet angle 1062 are between 70 degrees and 90 degrees.

[0058] Please see now Figures 22 to 23 The image shows different views of segment 1064 according to certain embodiments. In this embodiment, segment 1064 includes a first tooth 1065 and a second tooth 1067. Figure 22 From the side view, the first tooth 1065 and the second tooth 1067 are symmetrical, therefore each segment 1064 from Figure 22 The side view is also symmetrical. The center of segment 1064 defines a vertical line of symmetry 1080 (i.e., in the plane of saw chain 106 and perpendicular to the saw chain cutting direction). The first tooth 1065 is oriented to be a mirror image of the second tooth 1067, i.e., such that segment 1064 is symmetrical about the line of symmetry 1080.

[0059] Arranging segment 1064 in this pattern (e.g., providing multiple teeth on a single segment to form a segment symmetrical about a line of symmetry 1080 passing through segment 1064) enables the saw chain 106 to function as a bidirectional cutting chain. Advantageously, this embodiment will... Figures 2 to 8 Multiple asymmetrical segments are integrated into symmetrical cut segments, which can reduce manufacturing time when assembling the chain.

[0060] from Figure 21-22 As can be seen from the perspective and side view, segment 1064 includes a first end 1066 and a second end 1068 opposite to the first end 1066. As shown, the first end 1066 and the second end 1068 are generally rectangular (e.g., square), but according to embodiments, their shapes may be different (e.g., curved, oblong, triangular, etc.). As shown, the surface area of ​​the first end 1066 is equal to the surface area of ​​the second end 1068.

[0061] As shown in the figure, segment 1064 also includes a first side 1070 and a second side 1072 opposite to the first side 1070, the first side 1070 and the second side 1072 extending from the first end 1066 to the second end 1068. The first side 1070 is perpendicular to the first end 1066 and the second end 1068, the second side 1072 is perpendicular to the first end 1066 and the second end 1068, and the first side 1070 is parallel to the second side 1072. Segment 1064 can be a basic solid block defined by the first side 1070, the second side 1072, the first end 1066 and the second end 1068.

[0062] Segment 1064 includes a first inclined surface 1076 extending from a first end 1066 to a second inclined surface 1078 of segment 1064. The first inclined surface 1076 is angled relative to the first end 1066 to form a first tooth 1065. The second inclined surface 1078 is angled relative to the second end 1068 to form a second tooth 1067. The second inclined surface 1078 is angled upward relative to the first inclined surface 1076. As shown, the surface areas of the first inclined surface 1076 and the second inclined surface 1078 are substantially equal.

[0063] like Figure 22 As shown, a first inclined plane 1076 is oriented relative to the tooth base plane 1081 such that a first inclined plane angle 1082 (located within the cutting segment 1064) is defined between the tooth base plane 1081 and the first inclined plane 1076. A second inclined plane 1078 is oriented relative to the tooth base plane 1081 such that a second inclined plane angle 1084 (located within the cutting segment 1064) is defined between the tooth base plane 1081 and the second inclined plane 1078. As shown, the inclined plane angles 1082 and 1084 are approximately 20 degrees and are substantially equal. Other embodiments may include different inclined plane angles 1082 and 1084, ranging from any value between 10 degrees and 35 degrees. Similarly, other embodiments may include inclined planes of different lengths, which may result in different inclined plane angles.

[0064] A first inclined plane 1076 is oriented relative to a first end 1066 such that a first facet angle 1086 (located inside segment 1064) is defined between the first inclined plane 1076 and the first end 1066. A second inclined plane 1078 is oriented relative to a second end 1068 such that a second facet angle 1088 (located inside segment 1064) is defined between the second inclined plane 1078 and the second end 1068. The first facet angle 1086 and the second facet angle 1088 are acute angles of approximately 90 degrees, and are substantially equal as shown (but may be different in other embodiments). In some embodiments, the values ​​of the first facet angle 1086 and the second facet angle 1088 are between 70 degrees and 90 degrees.

[0065] In the above reference Figures 1 to 23 In each of the described embodiments, alternative segments 206, 208, 1014, 1064 can be used in various combinations on the same saw chain 106. For example, segment 1014 can be alternated with segment 1064 every other connecting band 202. In another example, saw chain 106 can include a configuration where a first segment 206 is coupled to a connecting band 202, segment 1016 is coupled to the next connecting band 202, and a second segment 208 is coupled to the next connecting band 202. In some embodiments, segments 206, 208, 1014, 1064 can be located on drive link 200 instead of on connecting band 202 (or on drive link 200 in addition to being located on connecting band 202). Any pattern can be used with or without connecting strip 202 or drive link 200, including or without cutting segments 206, 208, 1014, 1064 (e.g., every other connecting strip 202, segments 206, 208, 1014, 1064 on each connecting strip 202, skipping two connecting strips 202 between each segment 206, 208, 1014, 1064, etc.).

[0066] As used herein with respect to numerical ranges, the terms “about,” “approximately,” “basically,” and similar terms generally refer to ±10% of the disclosed values. When the terms “about,” “approximately,” “basically,” and similar terms are applied to structural features (e.g., describing their shape, size, orientation, direction, etc.), these terms are intended to cover minor structural variations that may result from, for example, manufacturing or assembly processes, and are intended to have a broad meaning consistent with common and accepted usage by one of ordinary skill in the art to which this disclosure pertains. Therefore, these terms should be interpreted as indicating that non-substantial or irrelevant modifications or alterations to the described and claimed subject matter are considered to fall within the scope of this disclosure as enumerated in the appended claims.

[0067] As used herein, the term “coupling” and its variations mean that two components are connected to each other, directly or indirectly. This connection can be static (e.g., permanent or fixed) or movable (e.g., removable or releasable). Such a connection can be achieved by two components being directly coupled to each other, two components being coupled to each other using a separately inserted intermediate component and any additional intermediate components coupled to each other, or two components being coupled to each other using an intermediate component integrally formed with one of the two components as a single whole. If “coupling” or its variations are modified by an additional term (e.g., direct coupling), the general definition of “coupling” provided above is modified by the concise linguistic meaning of that additional term (e.g., “direct coupling” means two components connected without any separate intermediate component), resulting in a narrower definition than the general definition of “coupling” provided above.

Claims

1. A saw chain, comprising: First connecting strip; The first drive link coupled to the first connecting strip; A second connecting strip coupled to the first drive chain link; The second drive link is coupled to the second connecting band; A third connecting strip coupled to the second drive chain link; A first wavy-shaped cut segment coupled to the first connecting band and having a first asymmetrical profile; as well as A second wavy profile cut segment coupled to the third connecting band and having a second asymmetrical profile, wherein the orientation of the first wavy profile cut segment and the second wavy profile cut segment is such that the first asymmetrical profile and the second asymmetrical profile are symmetrical about the second drive chain segment.

2. The saw chain according to claim 1, wherein the first wavy-shaped cutting segment includes a first asymmetrical tooth and a second asymmetrical tooth.

3. The saw chain according to claim 2, wherein: The first asymmetric tooth includes a first inclined surface adjacent to the first surface, the first inclined surface having a larger surface area than the first surface; and The second asymmetric tooth includes a second inclined surface adjacent to the second surface, the second inclined surface having a larger surface area than the second surface.

4. The saw chain according to claim 3, wherein the first inclined plane is substantially parallel to the second inclined plane.

5. The saw chain according to claim 3, wherein the first wavy-shaped cutting segment further includes a third asymmetrical tooth.

6. The saw chain of claim 5, wherein the third asymmetric tooth includes a third bevel adjacent to the end of the first wavy-shaped cutting segment.

7. A saw chain, comprising: First connecting strip; A wavy-shaped cut segment coupled to the first connecting band, the wavy-shaped cut segment comprising: First asymmetrical tooth; as well as The second asymmetrical tooth is oriented such that it is symmetrical to the first asymmetrical tooth about the center of the wavy cut segment.

8. The saw chain according to claim 7, wherein: The first asymmetric tooth includes a first inclined surface adjacent to the first surface, the first inclined surface having a larger surface area than the first surface; and The second asymmetric tooth includes a second inclined surface adjacent to the second surface, the second inclined surface having a larger surface area than the second surface.

9. The saw chain according to claim 7, wherein the wavy-shaped cutting section further comprises a third asymmetrical tooth and a fourth asymmetrical tooth.

10. The saw chain according to claim 9, wherein the orientation of the third asymmetrical tooth is such that the third asymmetrical tooth and the fourth asymmetrical tooth are symmetrical about the center of the wavy-shaped cutting segment.

11. The saw chain according to claim 10, wherein: The first asymmetric tooth includes a first bevel adjacent to the first end of the wavy-shaped cut segment; The third asymmetric tooth includes a second inclined surface adjacent to the first surface, the second inclined surface having a larger surface area than the first surface; The fourth asymmetric tooth includes a third inclined surface adjacent to the second surface, the third inclined surface having a larger surface area than the second surface; and The second asymmetric tooth includes a fourth bevel adjacent to the second end of the wavy profile cut segment.

12. The saw chain according to claim 11, wherein: The first inclined plane is substantially parallel to the second inclined plane; and The third inclined plane is substantially parallel to the fourth inclined plane.

13. The saw chain according to claim 7, wherein: The first asymmetric tooth includes a first bevel adjacent to the first end of the wavy-shaped cut segment; and The second asymmetric tooth includes a second bevel adjacent to the second end of the wavy-shaped cut segment.

14. A saw chain, comprising: First connecting strip; The first drive link coupled to the first connecting strip; A second connecting strip coupled to the first drive chain link; The second drive link is coupled to the second connecting band; A third connecting strip coupled to the second drive chain link; A first wavy-shaped cut segment coupled to the first connecting strip, the first wavy-shaped cut segment having a first set of asymmetrical teeth; as well as A second wavy-shaped cut segment coupled to the third connecting band, the second wavy-shaped cut segment having a second set of asymmetrical teeth, the second set of asymmetrical teeth being symmetrical to the first set of asymmetrical teeth about the second connecting band.

15. The saw chain according to claim 14, wherein: The first set of asymmetrical teeth includes a first asymmetrical tooth and a second asymmetrical tooth; and The second set of asymmetrical teeth includes the third asymmetrical tooth and the fourth asymmetrical tooth.

16. The saw chain of claim 15, wherein the first asymmetrical tooth is oriented such that the fourth asymmetrical tooth is symmetrical to the first asymmetrical tooth about the second connecting band, and the second asymmetrical tooth is oriented such that the third asymmetrical tooth is symmetrical to the second asymmetrical tooth about the second connecting band.

17. The saw chain according to claim 16, wherein: The first asymmetric tooth includes a first inclined surface adjacent to the first surface, the first inclined surface having a larger surface area than the first surface; The second asymmetric tooth includes a second inclined surface adjacent to the second surface, the second inclined surface having a larger surface area than the second surface; The third asymmetric tooth includes a third inclined surface adjacent to the third surface, the third inclined surface having a larger surface area than the third surface; and The fourth asymmetric tooth includes a fourth inclined surface adjacent to the fourth surface, the fourth inclined surface having a larger surface area than the fourth surface.

18. The saw chain according to claim 17, wherein: The first inclined plane is substantially parallel to the second inclined plane; and The third inclined plane is substantially parallel to the fourth inclined plane.

19. The saw chain according to claim 14, wherein: The first set of asymmetrical teeth includes a first asymmetrical tooth, a second asymmetrical tooth, and a third asymmetrical tooth; and The second set of asymmetrical teeth includes the fourth asymmetrical tooth, the fifth asymmetrical tooth, and the sixth asymmetrical tooth; The orientation of the first asymmetrical tooth is such that the sixth asymmetrical tooth is symmetrical to the first asymmetrical tooth about the second connecting band; the orientation of the second asymmetrical tooth is such that the fifth asymmetrical tooth is symmetrical to the second asymmetrical tooth about the second connecting band; and the orientation of the third asymmetrical tooth is such that the fourth asymmetrical tooth is symmetrical to the third asymmetrical tooth about the second connecting band.

20. The saw chain according to claim 19, wherein: The first asymmetric tooth includes a first inclined surface adjacent to the first surface, the first inclined surface having a larger surface area than the first surface; The second asymmetric tooth includes a second inclined surface adjacent to the second surface, the second inclined surface having a larger surface area than the second surface; The third asymmetric tooth includes a third bevel adjacent to the end of the first wavy-shaped cut segment; The fourth asymmetric tooth includes a fourth bevel adjacent to the end of the second wavy profile cut segment; The fifth asymmetric tooth includes a fifth inclined surface adjacent to the third surface, the fifth inclined surface having a larger surface area than the third surface; and The sixth asymmetric tooth includes a sixth inclined surface adjacent to the fourth surface, the sixth inclined surface having a larger surface area than the fourth surface.

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