Patent ID: 6260720
Filing Date: 2001-07-17
Classification: B66C

Abstract:
A system comprising a first rigid arm and a second arm connected to said first arm, said second arm comprising a plurality of arm segments hingedly interconnected to form a polygon, said plurality of arm segments comprising:a first arm segment;a second are segment having first and second ends;a third arm segment comprising a linear portion and a base portion having first and second ends, said linear portion being connected to said base portion at a point between said first and second ends, said base portion second end extending outside the polygon formed by said plurality of arm segments;a fourth arm segment having first and second ends, said third arm segment base portion first end being connected to said fourth arm segment at a point between said fourth arm segment first end and said fourth arm segment second end and said fourth arm segment second end extending outside the polygon formed by said plurality of arm segments;at least one rod connected between the linear portion of said third arm segment and a point on said second arm segment between said second arm segment first end and said second arm segment second end; and,hydraulic actuator means connected between said third arm segment base portion second end and said fourth arm segment second end.