Lubricant feeding structure for chain saw guide bar

B - Operations – Transporting – 27 – B

Patent

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Details

B27B 17/12 (2006.01) B27B 17/02 (2006.01)

Patent

CA 2157722

A lubricant feeding structure for chain saw guide bar made of a single plate includes a lubricant supply port made in the base end portion of the guide bar surface, a bottomed recess groove running continuously from the lubricant supply port to the tip portion, and bottomed holes located on the bottomed recess groove. The side walls of the holes and the recess groove are tilted to increase the widths of the cross sections of the recess groove and the hole toward the bottom. A hollow pipe running continuously from the lubricant supply port to the tip portion is installed in the recess groove and in the holes, while the recess groove and the holes are filled with a light-weight filling material such as a synthetic resin thereby to consolidate the hollow pipe integrally with the guide bar.

Dispositif d'alimentation en lubrifiant pour un guide-chaîne de scie à chaîne, constitué d'une seule plaque. Le dispositif comporte : une entrée à lubrifiant percée dans la surface de la base du guide-chaîne; un sillon dont la partie inférieure comprend une rainure qui relie sans interruption l'entrée à lubrifiant et la tête du guide-chaîne; et des trous, dirigés vers le bas, placés dans la partie inférieure de la rainure inférieure. Les parois latérales des trous et de la rainure sont inclinées pour accroître la largeur de leurs coupes transversales vers la partie inférieure. Un tuyau creux, reliant l'entrée à lubrifiant et la pointe du guide-chaîne, est inséré dans le creux et dans les trous, les creux et les trous ayant été remplis d'une matière de remplissage légère, comme de la résine synthétique, pour coller le tuyau creux et le guide-chaîne.

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