Patent ID: 6332747
Filing Date: 2001-12-25
Classification: E02F

Abstract:
A coupling apparatus in an excavator, comprising:an arm coupler fixed to one end of an arm of said excavator, said arm coupler having a first cylinder containing a pair of first pistons and first side openings;a link coupler fixed to one end of an operational link of said excavator, said link coupler having a second cylinder containing a pair of second pistons and second side openings;a connecting member directly connected to and fixed between said arm coupler and said link coupler, maintaining a first fixed distance between longitudinal center lines of said arm coupler and said link coupler;an excavating device having two pairs of first and second holes respectively formed on a pair of brackets, said first holes having a first common center line spaced apart from a second common center line passing through centers of said second holes by a second fixed distance same as said first fixed distance;a pair of first piston rods each formed on an outer end of said first pistons contained in said arm coupler, protruding outwardly through one of said first side openings, rotatably inserted into said first holes for connecting said excavating device to said excavator; anda pair of second piston rods each formed on an outer of said second pistons contained in said link coupler, protruding outwardly through one of said second side openings, rotatably inserted into said second holes for connecting said excavating device to said excavator.