Trimmer line with inner and outer cutting portions

Details Trimmer line with inner and outer cutting portions Trimmer line with inner and outer cutting portions

1997-12-16

2000-09-26

Rada, Rinaldi I.

Cutlery

Blades

Rotary

56295, 428397, 30276, A01D 3463

Patent

active

06122832&

ABSTRACT:
A cutting attachment for use with a vegetation cutting device. The cutting attachment has a body with a generally planar coupling portion and a central axis of rotation. In one embodiment, the body further includes a conical central wall portion extending radially outwardly and in a first direction from the coupling portion and the axis and a circular outer wall portion adjoining the central wall portion and extending generally radially outwardly therefrom. The central wall portion defines a conically-shaped self-cleaning inner cavity disposed symmetrically about the axis. The outer wall portion has a generally smooth outer surface which serves as a skid plate. An outer self-cleaning cavity is formed by an outer surface of the central wall portion and an inner surface of the outer wall portion. A coupling assembly, which can include an adapter having first and second clamping elements, is carried by the coupling portion for coupling the body to the cutting device to cause rotation about the axis. A plurality of spaced apart radially extending cutting elements, in the form of cutting blades and/or cutting strings, are carried by the body. Cutting blades are provided with aerodynamic configurations, serrated edges, inner and outer cutting edges and arms for securing the blades to the cutting attachment which permit longitudinal movement of the cutting blade with respect to the cutting attachment. Cutting strings are provided with inner and outer cutting portions, grooves for reducing fraying and a spiraled configuration.

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