US 7,743,511 B2Granted

Powered disk preferably with oscillateable, trimmer-line-hook mounts

OwnerOrlando Jerezinventor

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Abstract

A trimmer line, hook disk system forming a line trimmer head (e.g., FIGS. 10 & 10A, 19 & 20) for attaching to a powered, rotational device (FIGS. 11-16) to provide a line filament grasscutting/weed-removal action. The trimmer head preferably includes a circular, protective, bottom base (D2/60/160), a main trimmer head top (D3/D30/130), the two forming a disk shape, and a series of peripherally spaced, line holders; with these three basic elements fastened together for ultimate attachment to the powered 31 device. Ten exemplary line holder are shown (FIGS. 1-9B), with most allowing oscillating (O) motion in their attachment to the trimmer device (D1), allowing the lines to move backwardly when contacting a relatively hard item, and/or some fixed (F). A “broom” embodiment is disclosed (FIG. 17). When used, flexible line, e.g. of nylon, is inserted in (1) and held (2) by the line holders preferably using hook or hook-like line attachments.

Claims7

Dependent claims

A flexible, trimmer line system for cutting vegetation comprising a powered device providing rotary power at a power end;

a flexible, line-trimming-head add-on attached to the power end of said powered device for rotation, said trimmer-line-head add-on comprising a protective base portion;
a main trimmer head top portion having an upper side and a bottom side, the bottom side attached to said protective base forming a combined head top portion and base portion structure;
and a series of at least two, separable, peripherally spaced, line holder parts attached to said upper side of said trimmer head top portion so that said line holder parts oscillate back and forth about respective vertical axes and located adjacent to the periphery of said trimmer head top portion spaced a hundred and eighty) (180° degrees apart from one another, said line holder parts having one or more line holder attachments capable of accepting and holding one or more respective folded-back, flexible, trimming lines in said line holder attachments when said base portion, said trimmer head top portion and said line holder parts, attached together as an integral unit, are rotated at a relatively high speed by said powered device, causing said trimming lines to move straight, radially out under the action of centrifugal force but allowing the trimming lines to move backwards due to impeding forces and then allowing each respective line holder part to oscillate back urging the trimming lines back toward a radial position.

Dependencies are inferred from the claim text.