The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1991
Filed:
Nov. 02, 1989
Nash S Desent, Shreveport, LA (US);
Imack L Collins, Shreveport, LA (US);
White Consolidated Industries, Inc., Cleveland, OH (US);
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.