COUPLING ELEMENT
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United States of America Patent
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N/A
Issued Date -
Mar 4, 2010
app pub date -
Aug 31, 2009
filing date -
Sep 2, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A coupling element is provided for a detachable plug connection of a guide tube, which is dividable into at least two sections, with a drive shaft mounted therein for torque transmission between an engine unit and a tool head of a hand-operated string trimmer. A first, upper guide tube section is arranged between the engine unit and the coupling element, and a second, lower guide tube section is arranged between the coupling element and a tool head. The coupling element has a coupling sleeve that provides both an exact alignment of the cutting tool as well as a simple and secure assembly of the guide tube sections. A latching connection with at least one latching element is arranged on the coupling sleeve so that it latches into place in only the correct rotational position on a latching seat of the guide tube section upon insertion of one of the guide tube sections into the coupling sleeve.
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