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US 2010/0058915 A1Published application
Saw chain drive link with tail
AssigneeBlount, Inc.
InventorsMike Goettel, Arlan Way
Life of this patent
Estimating the term…
Abstract
A saw chain for a chain saw is disclosed. Embodiments include a drive link that may be used in a saw chain, wherein the drive link includes a tail and a concavity that complements a depth gauge of a trailing cutting link, reducing and/or minimizing the drive link's protrusion into a gullet space of the cutting link. Embodiments of the invention may help improve cutting performance and further help reduce kickback potential.
Claims9
A drive link for a saw chain, comprising:
- a forward rivet hole and a rearward rivet hole, wherein the forward rivet hole and the rearward rivet hole define a first centerline that is generally parallel to a rail of a guide bar and a second centerline that is generally perpendicular to the first centerline, wherein the first and second center lines are generally coplanar with the drive link;
- a top edge comprising a tail portion having a trailing end tip disposed a first distance from the second centerline;
- and
- a concavity formed between the top edge and a trailing edge of the drive link, wherein the concavity has a forward-most portion disposed below the top edge and at a second distance from the second centerline, and the trailing edge is disposed below the top edge and at a third distance from the second centerline, the second distance being shorter than the first distance and the third distance.
1 more element
A saw chain, comprising:
- a cutting link comprising a cutting edge disposed at a first height relative to a guide bar rail, a depth gauge disposed generally at or below the first height, and a gullet formed between the cutting edge and the depth gauge;
- and
- a drive link, coupled to the cutter link, wherein the drive link comprises:
- a forward rivet hole and a rearward rivet hole, wherein the forward rivet hole and the rearward rivet hole define a first centerline, and the rearward rivet hole further defines a second centerline that is generally perpendicular to the first centerline and generally coplanar with the drive link;
- a rear portion having an end tip, wherein the tip is disposed at a first distance from the second centerline;
- and
- a concavity disposed between the tip and a trailing edge of the drive link, wherein the concavity has a forward-most portion disposed a second distance from the second centerline, and the trailing edge is disposed a third distance from the second centerline, the second distance being shorter than the first distance and the third distance.
4 more elements
Dependencies are inferred from the claim text.