Patent ID: 9592637
Date: 2017-03-14
CPC Classifications: B29C,B33Y

Claim:
1. A mobile cart that moves through a three-dimensional object printing system, the mobile cart comprising: a platform; at least one bearing that is operatively connected to the platform and is configured to engage with a lower surface of at least one rail of the printing system to locate the platform with respect to an ejector head of the printing system; and at least one other bearing that is operatively connected to the platform and is configured to engage with an upper surface of the at least one rail and apply a biasing force that urges the at least one bearing against the lower surface of the at least one rail, the at least one other bearing being configured to deform in response to passing over contaminants on the upper surface of the at least one rail to maintain a distance between the platform and the at least one bearing.