B - Operations – Transporting – 27 – B
Patent
B - Operations, Transporting
27
B
188/6, 143/7
B27B 17/00 (2006.01) B27B 17/08 (2006.01)
Patent
CA 1180252
SAFETY BRAKING APPARATUS FOR A PORTABLE CHAIN SAW Abstract of the Disclosure A manually portable chain saw (10) having a gripping handle (18), a cutting chain (26), a sensing arm (30), and a motlve force mechanism (14), features a releasable bistate mechanism (39a) for stopping cutting chain movement in response to forward movement of the sesing arm (30). The releasable bistate assembly (39a) captures an end of a brake band (40) for loingitudinal movement in the direction of the brake band (40) and transverse movement in the direction of the icing axis of the sensing arm (30). Independent adjustment of the forces on the sensing arm (30) and on the latch mechanism (49), and positive braking action are achieved. Separate spring biases (50, 52) are employed against the sensing arm (30) and the latch mechanism (49) respectively.
383437
Mcculloch Corporation
Riches Mckenzie & Herbert Llp
LandOfFree
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