| 摘要 |
A chain saw bar defines an elongate open area within which is formed an insert member of a lightweight, nonmetallic material. An internal edge structure of the saw bar includes an inwardly directed, apertured flange. The insert member is formed with portions overlying opposite sides of the flange and at least partially occupies openings therein to enhance securement to the bar. An insert member of a fiber reinforced material is disclosed.
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