A saw chain holder with a bar mounted sharpener for sharpening a chain includes a base plate and a cover plate removably attachable to the base plate. The base plate has a first base side surface, an opposite second base side surface, a groove extending into the first base side surface, and a base recess extending into the second base side surface. The cover plate has a first cover side surface and an opposite second cover side surface. The cover plate is movable into an assembled state in which the first cover side surface abuts the first base side surface, the chain is movable along the groove between the base plate and the cover plate, and the bar mounted sharpener is mounted in the base recess, bears against the second cover side surface, and is positioned over the groove.

A chainsaw tooth sharpening tool is presented with a first, e.g., planar, section for reducing a depth gauge of a tooth of the chain and a second section having a geometry for sharpening a cutting corner of the tooth. A chainsaw tooth sharpener apparatus using the chainsaw tooth sharpening tool is also presented. The apparatus comprises a motor for driving a rotative chainsaw tooth sharpening tool to be mounted thereto according to a rotation axis, a base to hold a tooth of a chain to be sharpened, and adjustment means to adjust the motor relative to the base. The adjustment means are adapted to adjust the motor relative to the base according to at least two of a) a depth adjustment, b) a longitudinal adjustment relative to the chainsaw tooth, and c) an angular adjustment relative to the chainsaw tooth.

What is disclosed is a new type of method and device for sharpening the saw chain of a chain saw. In the first stage of the method, a rotating sharpener is brought against the first cutter to be sharpened of the chain and the sharpener is pressed against the first cutter at a set sharpening angle in order to remove material from the cutting edge of the first cutter. The chain is then moved in its longitudinal direction to position the second cutter for sharpening. In the second stage, the rotating sharpener is kept rotating in the same direction as in the first stage and the rotating sharpener is brought at a set sharpening angle against the second cutter to be sharpened in order to remove material from the cutting edge of the second cutter.

What is disclosed is a new type of method and device for sharpening the saw chain of a chain saw. In the first stage of the method, a rotating sharpener is brought against the first cutter to be sharpened of the chain and the sharpener is pressed against the first cutter at a set sharpening angle in order to remove material from the cutting edge of the first cutter. The chain is then moved in its longitudinal direction to position the second cutter for sharpening. In the second stage, the rotating sharpener is kept rotating in the same direction as in the first stage and the rotating sharpener is brought at a set sharpening angle against the second cutter to be sharpened in order to remove material from the cutting edge of the second cutter.

The present disclosure relates a chain sharpening jig as well as method of using an existing chainsaw sharpener for machining tooth profile of chainsaw chains. The chain sharpening jig includes a slide base configured to be clamped to a universal chainsaw sharpener. A slide clamp is slidably arranged on the slide base. A chain holder is connected to the slide clamp and the chain holder is configured to receive the chainsaw chain. The chainsaw chain is configured to be machined by the grinding wheel of the universal chainsaw sharpener.

A chainsaw cutting link (1b) comprises a cutting tooth (7b) with a side plate (12b) and a top plate (10b), defining an L-shaped cutting edge (13b, 14b). The top plate (10b) comprises an outer surface (11b) with a first outer surface portion and a depressed second outer surface portion (16). A saw chain comprises a plurality of such cutting links (1b). Use of such cutting links (1b) or such a saw chain increases the ability of making bore cuts. A method of manufacturing a cutting link (1b) comprises: punching a piece of material to form a cutting link (1b) blank with a top plate portion (10b) and a side plate portion (12b); bending the top plate portion (10b) to form an L-shaped cutting edge (13b, 14b); and grinding thereof. An area of the top plate (10b), corresponding to the second outer surface (16) is depressed.

A chainsaw cutting link (21) comprises: a base portion (29) provided with two rivets holes (20a, 20b) for pivotal inter-connection with adjacent links (13), and a cutting tooth (35) extending away from the base portion (29), wherein the cutting tooth (35) comprises a top plate (41) and a side plate (43) defining an angle to form an L-shaped cutting edge (45, 47, 49) facing in a cutting direction (B). The top plate (41) comprises a top plate cutting edge (45) which is sharper than at least a portion (53) of the side plate cutting edge (47).

A portable sharpener for chains of chainsaws comprising sharpening means (2) and a coupling device (3). The sharpening means (2) are configured to sharpen the teeth (102) of a chain (101) of a chainsaw. The coupling device (3) supports the sharpening means (2) and is configured to be reversibly constrained to the chainsaw. Furthermore, the coupling device (3) comprises a support structure (4) which has a first plate (4a) adapted to be arranged parallel to a main extension plane of a chain guide bar (100) of the chainsaw and a second plate (4b) configured to abut against the bar (100), in such a way as to be at least partly interposed between the bar and the chain (101). The first and the second plate (4b) are arranged substantially in an L-configuration. The coupling structure further comprises one or more attachment members (5) applied to the first plate (4a) and configured to constrain the support structure (4) to the bar (100) of the chainsaw.

The disclosure relates to a file for filing a saw tooth of a saw chain. The file includes a file body defining a circumferential direction and a circumference. The file body, in a cross section, has an unhewn guide surface and a file surface adjoining the unhewn guide surface in the circumferential direction. The unhewn guide surface extends over at least ⅙ of the circumference in the cross section.

A saw chain holder with a bar mounted sharpener for sharpening a chain includes a base plate and a cover plate removably attachable to the base plate. The base plate has a first base side surface, an opposite second base side surface, a groove extending into the first base side surface, and a base recess extending into the second base side surface. The cover plate has a first cover side surface and an opposite second cover side surface. The cover plate is movable into an assembled state in which the first cover side surface abuts the first base side surface, the chain is movable along the groove between the base plate and the cover plate, and the bar mounted sharpener is mounted in the base recess, bears against the second cover side surface, and is positioned over the groove.