Patent ID: 6665940
Filing Date: 2003-12-23
Classification: A01D

Abstract:
A vegetation cutting tool comprising:a rotary power source; a drive shaft for transmitting the rotary power to a gear box, the gear box coupling the drive shaft to an output shaft; a vegetation cutting member connected to the output shaft; a rotary member coupled to the output shaft, between the cutting member and the gear box, so that it rotates with the shaft; and a locking pin disposed within, and remaining within during operation of the trimmer, a channel formed along an exterior of the gear box and constrained to move only along a line that is generally in a direction parallel to an axis of the output shaft, the locking pin having a manually-depressible exposed portion and moving between an unlockcd position and a locking position upon application of a manually-applied force to the exposed portion; wherein in the locking position the locking pin interferes with the rotary member to prevent rotation of the output shaft and in the unlocked position does not interfere with rotation of the rotary member.