Patent ID: 6871426
Filing Date: 2005-03-29
Classification: E02F

Abstract:
1. A locking arrangement for releasably locking a wear tooth to a tooth adaptor, wherein the wear tooth comprises a cutting edge at a first end of the wear tooth, atop wall, a bottom wall and a pair of opposed sidewalls, each sidewall having an elongate slot therethrough disposed such that a longitudinal axis thereof extends in a direction substantially aligned cowards the cutting edge, and wherein the tooth adaptor is of substantially complementary shape to receive a second end of the wear tooth and comprises a pair of opposed walls and an elongate cavity on each opposed wall adapted to substantially align with a respective slot of the wear tooth when the wear tooth is installed on the tooth adaptor, the locking arrangement comprising: retaining means adapted to be installed in each aligned cavity and slot to releasably lock the wear tooth to the tooth adaptor, wherein the retaining means comprises a first engaging retaining piece and a second engaging retaining piece adapted to fit in an end-abutting relationship when the engaging retaining pieces are in a locked position, and wherein the engaging retaining pieces are adapted to be released from the locked position upon an arcuate force being applied to the engaging retaining pieces.