US 11,654,496 B2
Ring saw
Oliver Koslowski, Puergen (DE); Bernhard Brehm, Calf (DE); John Van Taack-Trakranen, Munich (DE); Goran Golubovic, Buchloe (DE); and Josef Schittl, Thueringen (AT)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 17/624,087
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Jun. 24, 2020, PCT No. PCT/EP2020/067612
§ 371(c)(1), (2) Date Dec. 30, 2021,
PCT Pub. No. WO2021/001225, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 19184055 (EP), filed on Jul. 3, 2019.
Prior Publication US 2022/0355398 A1, Nov. 10, 2022
Int. Cl. B23D 47/12 (2006.01); B27B 5/14 (2006.01); B23D 61/02 (2006.01)
CPC B23D 47/123 (2013.01) [B23D 61/02 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A ring saw (2), comprising:
a ring saw blade (1);
a tool holder (5), wherein the tool holder (5) guides the ring saw blade (1) in a cutting plane (E);
a motor (30);
a driving wheel (6), wherein the ring saw blade (1) is drivable in the cutting plane (E) by the driving wheel (6) and wherein the driving wheel (6) is coupled to the motor (30);
a guide roller (41) which is disposed on a first side of the cutting plane (E), wherein the ring saw blade (1) is guidable by the guide roller (41) from the first side; and
a guide roll (43) which is disposed on a second side of the cutting plane (E), wherein the ring saw blade (1) is guidable by the guide roll (43) from the second side;
wherein the guide roll (43) is disposed in a hood (34) that is pivotable relative to the cutting plane (E);
wherein the driving wheel (6) is movable in the cutting plane (E) and wherein a movement of the hood (34) and of the driving wheel (6) is synchronized by a linkage mechanism (71).