Filament-type trimmer
AssigneeTextron Inc.
InventorLarry R. Baker
Life of this patent
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Abstract
In a filament type trimmer in which a filament is wound on a storage spool rotatably mounted in a rotating housing having a rim portion, the filament in passing from the spool to an exit opening in the rim portion of the housing extends through a flexible tubular guide which wraps approximately one turn around the spool. The guide prevents the outer coils on the spool from becoming entangled and also prevents local melting and welding of the outer coils as the result of axial vibration in the string during operation of the trimmer.
Claims9
In a filament-type trimmer, the combination of a rotatable housing having a rim portion, a filament storage spool rotatably mounted in said housing, a filament wound on said spool, exit means in said rim portion of the housing through which an end portion of said filament extends in passing from said spool to the exterior of the housing, and flexible tubular guide means through which said filament extends in passing from said spool to said exit means.
Dependencies are inferred from the claim text.