Patent ID: 6699000
Filing Date: 2004-03-02
Classification: E02F

Abstract:
A machine having only a single monolithic working arm, the machine including a body part to which a first end of the arm is attached for relative pivotal movement exclusively about a first generally horizontal axis and the arm having a second end adapted to mount a working implement for movement relative to the arm about a second generally horizontal axis wherein the arm is substantially straight between the first and second ends, and is of substantially inverted channel configuration having a continuous top part and a pair of side walls integrally formed, each of the side walls including a free edge, and the arm over at least a major portion of its length between the first and second ends including a strengthening member which extends between and is connected to the side walls, the arm having a central pivot region defined by the sidewalls and disposed centrally between the first and second ends, the pivot region arranged to receive an actuator, the strengthening member extending between the side walls generally adjacent to the free edges of the sidewalls along at least a portion of the length of the arm, the strengthening member having a section shaped to avoid the pivot region.