A cutting head for a brush cutter, edge trimmer or similar

Details A cutting head for a brush cutter, edge trimmer or similar A cutting head for a brush cutter, edge trimmer or similar

A - Human Necessities

01

D

A01D 34/416 (2006.01)

Patent

CA 2513635

A cutting head for a brush cutter, edge trimmer or similar, the head comprises a passageway (112) for a cutter string (300) and at least one curved surface (120) for supporting the string, the surface extending between an exit region (115) for said string from said passageway and a peripheral region of the head. According to the invention, the passageway extends (A) in a manner that is offset from an axis of rotation (C) of the head so as to present an inside edge constituted by its edge closest to said axis of rotation, said inner edge corresponding to a trailing edge of the string while the head is rotating, and the curved portion extends from said inner edge. This serves to reduce the radius of curvature of the curved portion without needing to increase the diameter of the head.

La présente invention a trait à une tête de coupe pour débroussailleuse, taille-haies ou analogue, comportant un passage (112) pour un fil de coupe (300) et au moins une surface courbe (120) pour le support du fil, la surface s'étendant entre une zone de sortie (115) pour ledit fil depuis ledit passage et une zone périphérique de la tête. Selon l'invention, le passage s'étend (A) de manière décalée par rapport à l'axe de rotation (C) de la tête afin de présenter un bord intérieur constitué par son bord le plus proche de son axe de rotation, ledit bord intérieur correspondant au bord de fuite du fil lors de la rotation de la tête, et la portion incurvée s'étend depuis ledit bord intérieur. Cela permet de réduire le rayon de courbure de la portion incurvée sans avoir à accroître le diamètre de la tête.

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