Patent ID: 9592639
Date: 2017-03-14
CPC Classifications: B29C,B33Y

Claim:
1. A cart that moves through in a printing system, the cart comprising: a platform; a first bearing operatively connected to the platform, the first bearing being configured to roll along a first cylindrical rail of the printing system to enable the platform to move along the first cylindrical rail; and a first blade that is mounted to the platform and positioned to engage a curved surface of the first cylindrical rail as the first bearing rolls along the first cylindrical rail, the first blade having a leading edge that is oriented at an acute angle relative to the curved surface of the first cylindrical rail and the leading edge of the first blade being a curved edge with a radius substantially similar to a radius of the first cylindrical rail to enable the first blade to remove contaminant from the first cylindrical rail, the first blade having a shape of a radial section of a truncated cone with a radius of the first blade increasing with distance from the leading edge of the first blade.