Patent ID: 6513268
Filing Date: 2003-02-04
Classification: E02F

Abstract:
A quick coupler for an excavator, the quick coupler comprising:a cylinder tube having at least one fixing bolt hole formed on one side thereof; a piston housing fitted into the cylinder tube to be fixed by at least one fixing bolt inserted into the at least one fixing bolt hole; a pair of pistons inserted into each side of the piston housing and a spring interposed therebetween, each piston having a mechanical seal formed at its inner end; a pair of rod covers inserted between an outer circumference of the pistons and an inner circumference of the piston housing on each side of the piston housing for preventing leakage of hydraulic fluid; and a pair of coupler pins inserted between an outer circumference of the piston housing and an inner circumference of the cylinder tube on each side of the cylinder tube.