Patent ID: 9701351
Date: 2017-07-11
CPC Classifications: B62D

Claim:
1. An undercarriage track roller, comprising: a shaft; at least one collar operatively associated with the shaft, the collar having a top portion and a bottom portion; a guard plate operatively associated with the collar; at least one rim rotatably associated with the shaft and interfacing with the collar; a labyrinth formed between the collar and the rim, the labyrinth being at least partially overshadowed by the guard plate; and a variably angled face disposed on the collar, the variably angled face interfacing with the rim and forming the labyrinth between the collar and the rim, wherein the variably angled face of the collar is closer to the rim along the top portion of the collar and further from the rim along the bottom portion of the collar such that the labyrinth is larger along the bottom portion of the collar than the top portion of the collar to allow particles of debris to escape through the labyrinth.