Cutterhead for a string trimmer

Cutlery – Cutting tools – With blade moving means

Patent

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Details

30347, 56 127, A01G 306

Patent

active

053597770

ABSTRACT:
A cutterhead for a string trimmer having a rotatable drive shaft is adapted to hold and meter a cutting filament during operational use thereof. The cutterhead includes a disc-like carrier fixedly connected to one end of the drive shaft to permit the carrier to rotate about a rotational axis. The carrier has a peripheral edge and a peripherally extending outer wall approximately perpendicular to the carrier along the peripheral edge. The outer wall defines a space for accommodating the cutting filament in the cutterhead and has a guide eyelet disposed therein to define a pass-through opening for guiding the filament from the space to the outside of the cutterhead where a segment of the filament extends radially outwardly from the outer wall to define a cutting plane when the drive shaft rotates. The guide eyelet is made of wear-resistant material and is adapted to the diameter of the cutting filament. A stop is disposed in the cutting plane for receiving the segment of the cutting filament thereagainst when the segment strikes an obstacle and is deflected during operation of the string trimmer. The stop is disposed radially forward of the outer wall next to the pass-through opening.

REFERENCES:
patent: 4169311 (1979-10-01), Everson et al.
patent: 4253238 (1981-03-01), Sheldon
patent: 4571831 (1986-02-01), White, III
patent: 4805306 (1989-02-01), Baba
patent: 4893410 (1990-01-01), Hoffmann et al.

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