String trimmer head having invertible components that enable selective clockwise and counterclockwise operations
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United States of America Patent
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Sep 18, 2012
Grant Date -
N/A
app pub date -
Jun 24, 2009
filing date -
May 11, 2004
priority date (Note) -
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Importance
Abstract
A trimmer head assembly has a housing that defines an interior. A spool is provided. The spool can be inserted into the interior of the housing either in an upright configuration or in a flipped inverted orientation. A spring is provided in the housing that biases the spool into a first position within the housing. A ratcheting mechanism exists between the spool and the housing that enables the spool to rotate only in a first direction when in said first position. The direction of rotation permitted by the ratcheting mechanism depends upon the orientation of the spool within the housing. In this manner, a single trimmer head assembly can be made to operate on a clockwise trimmer or a counterclockwise trimmer merely by inverting the spool.
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