Tensioning arrangement for a saw chain

Details Tensioning arrangement for a saw chain Tensioning arrangement for a saw chain

1994-08-29

1996-02-20

Peterson, Kenneth E.

Cutlery

Cutting tools

Saw

83816, B27B 1714

Patent

active

054918995

ABSTRACT:
The invention is directed to a tensioning arrangement for a saw chain of a motor-driven chain saw. The saw chain runs on a guide bar mounted on the motor housing of the chain saw. The tensioning arrangement includes a rotatable disc having a spirally-shaped guide slot in which a lug of a slide piece engages. The longitudinal displacement of the guide bar is provided by rotating the disc. The guide slot in the disc extends over a rotational angle of at least 270.degree.. A still lesser slope of the guide slot is provided with a rotational angle in the range of 360.degree. to 450.degree.. The tensioning arrangement is especially suitable for adjusting the guide bar in motor-driven chain saws thereby adjusting the tension in the saw chain.

REFERENCES:
patent: 2624379 (1953-01-01), Arneson
patent: 2765821 (1956-10-01), Strunk
patent: 3636995 (1972-01-01), Newman
patent: 4129943 (1978-12-01), Bricker
patent: 5001958 (1991-03-01), Hall
patent: 5174029 (1992-12-01), Talberg

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