US 12,420,444 B2
Track saws with self-adjusting rib-guide assemblies and methods of operating self-adjusting rib-guide assemblies of track saws
Tobias Hoefer, Urbach (DE)
Assigned to Festool GmbH, (DE)
Appl. No. 17/919,614
Filed by Festool GmbH, Wendlingen am Neckar (DE)
PCT Filed Jun. 23, 2021, PCT No. PCT/EP2021/067122
§ 371(c)(1), (2) Date Oct. 18, 2022,
PCT Pub. No. WO2021/259989, PCT Pub. Date Dec. 30, 2021.
Claims priority of provisional application 63/044,034, filed on Jun. 25, 2020.
Prior Publication US 2023/0166425 A1, Jun. 1, 2023
Int. Cl. B27B 5/30 (2006.01); B23D 47/02 (2006.01); B23D 47/12 (2006.01); B23D 59/00 (2006.01); B27B 5/32 (2006.01); B27B 9/02 (2006.01); B27B 9/04 (2006.01); B27G 19/04 (2006.01)
CPC B23D 47/12 (2013.01) [B23D 47/02 (2013.01); B23D 59/003 (2013.01); B27B 5/30 (2013.01); B27B 5/32 (2013.01); B27B 9/02 (2013.01); B27B 9/04 (2013.01); B27G 19/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A track saw, comprising:
a motor including a motor shaft configured to rotate about a shaft rotational axis, the motor shaft including an arbor configured to attach a circular saw blade to the track saw and to receive a torque from the motor when the motor shaft rotates about the shaft rotational axis;
a base plate including an arbor-facing side and an arbor-opposed side, wherein the arbor-facing side of the base plate faces toward the arbor, wherein the base plate includes:
(i) a rib-receiving channel on the arbor-opposed side of the base plate and configured to receive a raised elongate rib of a track; and
(ii) a self-adjusting rib-guide assembly that at least partially forms the rib-receiving channel, wherein the self-adjusting rib-guide assembly is configured to adjust for a range of raised rib transverse widths;
wherein the self-adjusting rib-guide assembly includes a roller shaft, a guide roller, and a biasing mechanism;
wherein the guide roller is configured to operatively rotate about the roller shaft; and
wherein the guide roller is configured to operatively translate along the roller shaft between an extended state in which a minimum transverse width of a region of the rib-receiving channel is at least partially formed by the self-adjusting rib-guide assembly, and a retracted state in which a maximum transverse width of the region of the rib-receiving channel is at least partially formed by the self-adjusting rib-guide assembly, wherein the biasing mechanism is configured to bias the guide roller toward the extended state.