Quick coupler for excavator
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United States of America Patent
Stats
-
Feb 4, 2003
Grant Date -
Nov 21, 2002
app pub date -
Jan 22, 2002
filing date -
May 18, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A quick coupler for an excavator includes a cylinder tube fixed to each lower end of an excavator arm and a link, and having fixing bolt holes formed on one side thereof; a piston housing fitted into the cylinder tube to be fixed by fixing bolts inserted into the fixing bolt holes, and joined with a rod cover at both ends thereof, respectively; a pair of pistons inserted into each side of the piston housing with a spring interposed therebetween, each piston having a mechanical seal formed at its inner end; the pair of rod covers inserted between an outer circumference of the piston 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, each coupler pin formed in a cap-shape.
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