US 12,109,724 B2
Chain saws, components for chain saws, and systems for operating saws
Paul Viola, Bogota, NJ (US); Ira Sanders, Oakland, NJ (US); and Timothy J. Langloss, Berwyn, PA (US)
Assigned to Chain Orthopedics, LLC, Bogota, NJ (US)
Filed by Chain Orthopedics, LLC, Bogota, NJ (US)
Filed on Jul. 27, 2021, as Appl. No. 17/443,646.
Claims priority of provisional application 63/209,540, filed on Jun. 11, 2021.
Claims priority of provisional application 63/154,379, filed on Feb. 26, 2021.
Claims priority of provisional application 63/147,033, filed on Feb. 8, 2021.
Claims priority of provisional application 63/085,290, filed on Sep. 30, 2020.
Claims priority of provisional application 63/058,216, filed on Jul. 29, 2020.
Prior Publication US 2022/0032489 A1, Feb. 3, 2022
Int. Cl. B27B 33/14 (2006.01); B23D 57/02 (2006.01); B27B 17/02 (2006.01); B27B 17/08 (2006.01)
CPC B27B 33/142 (2013.01) [B23D 57/023 (2013.01); B27B 17/02 (2013.01); B27B 17/083 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A chain saw comprising:
a saw bar having a first longitudinal side, a second longitudinal side, and a distal end, wherein the first longitudinal side, the second longitudinal side, and the distal end define at least part of a chain path that extends in a chain path direction around the saw bar; and
a plurality of links arranged in a chain along the chain path around the saw bar;
wherein the saw bar comprises a main body and a rail extending from the main body along at least part of the chain path;
wherein each of the links in the plurality of links comprises a groove such that the links straddle the rail of the saw bar;
wherein each of the links in the plurality of links comprises a bottom surface, with a first part of the bottom surface on one side of the groove and with a second part of the bottom surface on an opposite side of the groove;
wherein the main body of the saw bar comprises a first ledge extending beyond a first side of the rail and a second ledge extending beyond a second side of the rail, wherein a width of the rail in a direction perpendicular to the chain path direction is narrower than a width of the main body of the saw bar in the direction perpendicular to the chain path direction at an area of the ledges; and
wherein the links are positionable on the saw bar such that the first part of the bottom surface of each link contacts the first ledge of the main body of the saw bar on the first side of the rail and the second part of the bottom surface of each link contacts the second ledge of the main body of the saw bar on the second side of the rail, such that forces on the links are transferred to the ledges of the saw bar on either side of the rail, and a clearance is present between the link and a top of the rail such that no part of the link contacts the top of the rail.