Cutlery – Cutting tools – With blade moving means
Patent
1989-11-02
1991-06-04
Watts, Douglas D.
Cutlery
Cutting tools
With blade moving means
30347, A01D 5518
Patent
active
050202235
ABSTRACT:
A compact, light weight, structurally simplified bump-feed type cutting head for a flexible line trimmer is formed from only six components--a hollow cylindrical hub having an open lower end; an annular cover member releasably securable over the lower hub end; a threaded arbor press-fitted into the hub to secure it to the trimmer drive shaft for rotation therewith; a hollow tubular release button member slidably extended through the central cover member opening and axially movable between downwardly extended and upwardly retracted positions; a line storage spool rotatable carried by the release button member within the hub; and a cylindrically coiled compression spring captively retained within the release button and biasing it toward its downwardly extended position. During high speed rotation of the hub about its axis, an outer end portion of flexible line coiled on the spool and passing outwardly through a hub side aperture is whirled through a transverse cutting plane to trim adjacent vegetation. When the outer line end becomes worn away, incremental line feedout is achieved simply by tapping the release button on the ground to activate a line escapement structure defined by cooperating teeth formed on the release button and the inner side surface of the spool hub. Spool removal is achieved simply by removing the cover member, the arbor functioning to hold the release button in place on the hub during and after spool removal.
REFERENCES:
patent: 4151646 (1979-05-01), Lane
patent: 4161820 (1979-07-01), Moore
patent: 4167812 (1979-09-01), Moore
patent: 4183138 (1980-01-01), Mitchell et al.
patent: 4203212 (1980-05-01), Proulx
patent: 4236309 (1980-12-01), Cayou
patent: 4269372 (1981-05-01), Kwater
patent: 4412382 (1983-11-01), White, III
patent: 4490910 (1985-01-01), Mattson et al.
patent: 4524515 (1985-06-01), Oberg
patent: 4633588 (1987-01-01), Pittinger
patent: 4672798 (1987-06-01), Ota
patent: 4702005 (1987-10-01), Pittinger, Sr.
patent: 4823465 (1989-04-01), Collins
Collins Imack L.
Desent Nash S.
Watts Douglas D.
White Consolidated Industries, Inc.
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