Low noise cutter arrangement for a motor-driven chain saw

Details Low noise cutter arrangement for a motor-driven chain saw Low noise cutter arrangement for a motor-driven chain saw

1998-10-09

2000-11-21

Watts, Douglas D.

Cutlery

Cutting tools

Saw

30381, B27B 1702

Patent

active

061485241

ABSTRACT:
The invention is directed to a low vibration and low noise cutter arrangement for a motor-driven chain saw. The cutter arrangement includes a guide bar and a saw chain. The guide bar has a guide groove for the saw chain which extends along the peripheral edges of the guide bar. The saw chain includes center links and side connecting links which are pivotally connected to each other. The connecting links on the right-hand and left-hand sides of the saw chain include cutting links and side links which are displaced relative to each other. The center links are provided with respective rakers which engage in the guide groove and can be driven in the longitudinal direction of the guide bar by a drive sprocket. The connecting links are supported with slide surfaces on the peripherally extending guide surfaces which lie at both sides of the guide groove. An elastically resilient spacer element is arranged between the guide bar and the saw chain in order to provide a significant reduction of the occurring vibrations and of the noise emissions. When the saw chain is not under load, the slide surfaces of the connecting links are held at a spacing relative to the guide surfaces of the guide bar and, when the saw chain is under load, the resilient spacer element yields until the connecting links are in contact engagement with the guide surfaces.

REFERENCES:
patent: 3390710 (1968-07-01), Cookson et al.
patent: 4203215 (1980-05-01), Ochiai et al.
patent: 4334358 (1982-06-01), Reynolds

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