CHAIN SAWS AND CHAINS THEREFOR.

摘要

PCT No. PCT/AU83/00037 Sec. 371 Date Nov. 29, 1983 Sec. 102(e) Date Nov. 29, 1983 PCT Filed Mar. 30, 1983 PCT Pub. No. WO83/03379 PCT Pub. Date Oct. 13, 1983.A chain saw having a bar (51) with a sprocket (50) rotatably mounted in the nose, and a chain with cutter links (52) mounted to travel along the periphery of the bar (51). The driving tongues (54) of the chain and the gullets (50a) between the teeth of the sprocket (50) being shaped so that when they interfit as the chain passes around the nose of the bar, the rear end (6) of each cutter link (52) is raised relative to cutting edge (67) so that said rear end (6) follows a path about the sprocket (50) outwardly of the path travelled by the cutting edge (67).