| 摘要 |
A saw (1) for forming a non-circular opening (34), the saw (1) including a roller chain (2) partially encircling a chain wheel (4) and a chain guide (6), the chain wheel (4) being supported in a holder body (8), and the chain wheel (4) being connectable to a driving device, and the roller chain (2) being provided with at least one first projecting knife (5; 22) on its side facing away from the holder body (8), and the at least one first knife (5; 22) being arranged at the outer periphery (24) of the roller chain (2). |
