Patent ID: 8684474
Filing Date: 2014-04-01
Classification: B62D

Abstract:
1. Apparatus, comprising: a roller of a tracked vehicle, the roller formed with a lubricating oil reservoir having an open end closed by a cap including a sealing body that spans the open end of the reservoir, the sealing body having an outer face facing away from the open end and an opposed inner face facing the open end to the lubricating oil reservoir; the sealing body is transparent to provide visual access therethrough into the lubricating oil reservoir through the open end for lubricating oil level and quality monitoring purposes; a depression with a raised rim formed in the outer face of the sealing body; the depression extends inwardly from the raised rim to a lubricating oil maintenance port formed in the sealing body, the port extends through the sealing body at the depression from the outer face of the sealing body to the inner face of the sealing body; a plug movable between a first position detached and separated from the port and the sealing body so as to open the port to provide access therethrough to the reservoir for lubricating oil replacement and replenishment purposes, and a second position detachably attached to the port and the sealing body so as to close the port; and in the second position of the plug detachably attached to the port thereby closing the port, the plug is positioned in the depression and extends outwardly from the outer face of the sealing body no further than the raised rim isolating the plug from shearing forces across the outer face of the sealing body.