Guide bar for a motor-driven chain saw

Details Guide bar for a motor-driven chain saw Guide bar for a motor-driven chain saw

1987-04-09

1989-01-03

Yost, Frank T.

Cutlery

Cutting tools

Saw

30383, B27B 1702

Patent

active

047946962

ABSTRACT:
The guide bar for a motor-driven chain saw is provided for taking highest loading and is therefore made of solid material. For weight reduction, openings are provided in the guide bar which are closed off by cover plates that are flush with the flat sides of the guide bar. The cover plates are firmly joined to the base plate of the guide bar. By means of the hollow spaces inside the guide bar, a considerable weight reduction is attained, yet the stability of the guide bar is not substantially impaired as compared to a solid guide bar, since the hollow spaces are located in the zone that is neutral in terms of bending.

REFERENCES:
patent: 3416578 (1968-12-01), Irgens
patent: 3473581 (1969-10-01), Merz
patent: 4693007 (1987-09-01), Apfel et al.

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