Harvesters – Cutting – Housing or guard
Patent
1990-06-26
1991-04-30
Bui, Thuy M.
Harvesters
Cutting
Housing or guard
56DIG24, A01D 3467
Patent
active
050107208
ABSTRACT:
A guard and guide for a powered, hand-operated, grass and weed trimmer having a trimming filament segment extending from a rotating spool thereof. The trimmer comprises an elongated tubular body having a forward end and a rearward end. The trimming filament segment and its spool are rotatively supported at the forward end of the trimmer body and are rotatable at high speed by operative connection to an internal combustion or electric prime mover. The guard and guide comprises an element having a forward portion having a substantially semi-circular peripheral configuration and an upwardly, inwardly and rearwardly extending rearward portion operatively attached to the trimmer body. This attachment is both adjustable and pivotable, the guide and guard being pivotable between a retracted inoperative position with its forward portion abutting the trimmer body and an extended operative position wherein the guard and guide forward portion extends away from the operator and overlies the forward portion of the path of travel of the trimming filament segment, extending slightly beyond the free end of the trimming filament segment to prevent contact of an object being trimmed about by the trimming filament segment to prevent damage to the object (such as a tree trunk) and to lengthen the useful life of the trimming filament segment.
REFERENCES:
patent: 4069651 (1978-01-01), Steffen
patent: 4756147 (1988-07-01), Savell
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