Patent ID: 8713904
Filing Date: 2014-05-06
Classification: A01D

Abstract:
1. An apparatus for cutting vegetation around an obstacle, the apparatus comprising: a supporting member adapted for pivotally connecting to a supporting vehicle, a mower arm comprising a proximal end portion and a distal end portion, the proximal end portion pivotally connected to a first portion of the supporting member, a pivotal arm comprising a first end portion and a second end portion, the pivotal arm pivotally connected to the distal end portion of the mower arm, a first rotary cutter, the first rotary cutter rotatable connected to the first end portion of the pivotal arm, a second rotary cutter, the second rotary cutter rotatable connected to the second end portion of the pivotal arm, and a release mechanism comprising a holding plate located on the pivotal arm and a tension device located on the mower arm and facing the holding plate, the holding plate including at least one hole, the tension device comprising an engagement member that engages the at least one hole in the holding plate to hold the pivotal arm in a first position such that the first rotary cutter is in a leading position relative to the second rotary cutter and when the engagement member disengages the holding plate, the pivotal arm rotates from the first position to a second position where the engagement member engages another one of the at least one hole in the holding plate to hold the pivotal arm in the second position such that the first rotary cutter is in a trailing position relative to the second rotary cutter.