US 12,214,518 B2
Sprocket arrangement, saw chain, and combination of sprocket arrangement and saw chain
Patrik Melin, Huskvarna (SE); and Albin Hagberg, Jönköping (SE)
Assigned to HUSQVARNA AB, Huskvarna (SE)
Appl. No. 17/251,060
Filed by HUSQVARNA AB, Huskvarna (SE)
PCT Filed Mar. 26, 2019, PCT No. PCT/EP2019/057514
§ 371(c)(1), (2) Date Dec. 10, 2020,
PCT Pub. No. WO2019/238289, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 1850710-3 (SE), filed on Jun. 12, 2018.
Prior Publication US 2021/0245389 A1, Aug. 12, 2021
Int. Cl. B27B 17/08 (2006.01); A01G 3/08 (2006.01); A01G 23/091 (2006.01); B27B 17/02 (2006.01); B27B 33/14 (2006.01); F16H 55/30 (2006.01)
CPC B27B 17/08 (2013.01) [A01G 3/086 (2013.01); A01G 23/091 (2013.01); B27B 17/02 (2013.01); B27B 33/14 (2013.01); F16H 55/30 (2013.01); F16H 2055/306 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a sprocket arrangement; and
a saw chain,
wherein the saw chain comprises a plurality of drive links, each of said drive links comprising a guide tooth configured to extend into, and be guided along, a guide channel of a chainsaw guide bar,
wherein the sprocket arrangement comprises a sprocket configured to be driven to rotate about a rotation axis and comprising a plurality of sprocket teeth configured to engage with the guide teeth of the drive links of the saw chain,
wherein a sprocket tooth spacing between consecutive ones of the sprocket teeth of the sprocket relates to a drive link spacing between consecutive ones of the drive links of the saw chain such that the guide teeth of two or more of the drive links enter between a pair of consecutive ones of the sprocket teeth,
wherein the apparatus further comprises a drive shaft connection interface for connecting the sprocket arrangement to a drive shaft of the apparatus,
wherein a radial support arrangement is connected to the drive shaft connection interface in a radially resilient manner,
wherein the radial support arrangement comprises a pair of radial support plates arranged on opposite sides of the sprocket, and
wherein each of said radial support plates is axially held between the sprocket and a respective axial support plate of the apparatus.