Patent ID: 7658025

Claim:
A retainer pin for securing an excavation tooth to a tooth adaptor, the tooth configured to seat onto the adaptor, the adaptor having a passageway configured to receive the retainer pin, the tooth having at least one passageway that substantially aligns with the adaptor passageway when the tooth is seated on the adaptor, the at least one tooth passageway having a planar flat surface disposed on a sidewall thereof, the retainer pin comprising: a) at least one pin section having a body with a longitudinal axis, the pin section having an inner end and an outer end; b) a bearing block disposed on the outer end of the at least one pin section, the bearing block larger in diameter than the at least one pin section body; and c) the bearing block further comprising means for indexing the at least one pin section with respect to the planar flat surface, the indexing means comprising a first flat surface configured for a sliding fit with the planar flat surface of the at least one tooth passageway when the at least one pin section is inserted, inner end first, through the at least one tooth passageway into the adaptor passageway thereby securing the tooth to the adaptor.