String trimmer head with opposing centrifugal forces filament fe

Details String trimmer head with opposing centrifugal forces filament fe String trimmer head with opposing centrifugal forces filament fe

1998-11-02

2000-03-14

Rada, Rinaldi I.

Metal working

Method of mechanical manufacture

Assembling or joining

30347, 30276, B26B 2700

Patent

active

060355115

ABSTRACT:
A rotating spool with walls (10t and 10b) so close together that the cutting filament (18) cannot wrap over on top of itself. The spool has flail anchors (14) at the spool walls' (10t and 10b) periphery. A spacer (20) between spool walls has the filament (18) wound on to it and is so shaped that the filament (18) has a larger distance from center of rotation between flail anchors (14) than it has nearest the flail anchors (14). The filament (18) is loaded onto the spool by inserting one end of the filament (18) into the loading hole (18h) until it emerges from between spool walls (10t and 10b), then drawn taut, then laced inside flail anchors (14) until the filament (18) is wound up on the spacer (20). And the flail (16) is ready to cut vegetation.

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patent: 5615543 (1997-04-01), Caffey et al.
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