STRAIGHT THROUGH LINE FEED VEGETATION TRIMMER APPARATUS

摘要

A trimmer head for use with either clockwise or counterclockwise trimmer heads, including the use of a bidirectionally dispensing spool. Various locations of passages straight through the trimmer head and spool are shown along with various locations of components of the ratcheting mechanism to allow for winding of the trimmer line on the trimmer head and for limiting the amount of line dispensed during “bumping” of the trimmer head knob on the ground. Because of the careful arrangement of the components, the trimmer head can have line wound in a single direction on the spool and still dispense line regardless of the direction that the trimmer head rotates by speeding up or slowing down the spool relative to the trimmer head housing to allow line to dispense independent of the direction of the rotation of the trimmer machine drive shaft rotating the trimmer head.

主权项

1. A bidirectionally operable trimmer head for selectively mounting to either one of both a trimmer machine having a clockwise drive direction machine and a trimmer machine having counterclockwise drive direction, comprising:
a trimmer head having a spool rotatably mounted within a trimmer head housing; said spool having at least one chamber for winding trimmer line threaded through said spool and around the spool in a first winding direction; said trimmer head having a pair of eyelets for receiving the ends of the trimmer line therethrough from said spool to an area outside of the housing; an activation knob slidably connected to said trimmer head housing for moving said spool from a first axial position relative to said housing to a second axial position relative to said housing to a second axial position relative to said housing; said trimmer head having a ratchet mechanism selectively switchable between a first winding mode when said trimmer head is in a first axial position for only allowing manually rotating said activation knob to wind the trimmer line from outside the housing onto said spool in the first winding direction while preventing rotation in a rotational direction opposite of the first winding, and said trimmer head having a second bidirectional line dispensing mode when said trimmer head is a second axial position for dispensing a length of the trimmer line out through the pair of eyelets.