Patent ID: 7798579

Claim:
An endless track chain assembly comprising: at least one drive wheel comprising a wheel rim, said wheel rim having a plurality of slots; an endless track chain inter-engaging with said drive wheel to be guided and driven by said drive wheel; a plurality of teeth on said drive wheel engaging said endless tracks each tooth having a base received in and abutting said slot, said base and slot being tapered to fix said teeth in place radially and axially, said teeth being configured to be replaceable in situ in a direction parallel with the rotational axis of said drive wheel, a tab engageable between said rim and each said tab to pull said tooth into said slot wherein the taper of said slot in said rim has a larger and smaller dimension, and said rim has a recess on the side of the rim having the smaller dimension for said slot and wherein said tab is received in said recess and is engageable with said tooth to pull said tooth against said tapered slot, and a screw extending through each said tooth and engaging with said tab for urging said tooth against said taper.