Patent ID: 7159724

Claim:
A system for collecting material, comprising: a first rigid pipe, the first rigid pipe defining a first conduit, the first rigid pipe having a first open end; a second rigid pipe, the second rigid pipe defining a second conduit, the second rigid pipe having a second open end; the first and second pipes being in telescopic relationship with the first rigid pipe and the second rigid pipe being in an overlapping relationship between the respective first and second ends of the overlapping pipes, the overlapping relationship defining a radial clearance between the first rigid pipe and the second rigid pipe; at least one header pipe secured to one of the rigid pipes, the at least one header pipe having a first plurality of openings through which to collect the material, the at least one of the header pipes directing the material to the one of the rigid pipes, wherein the first plurality of openings is configured to provide a first flow of the material from the header pipe into the one of the rigid pipes, and a bearing received in the radial clearance between the first rigid pipe and the second rigid pipe, the bearing being configured to allow a second flow of the material through the respective first or second open end and into the one of the rigid pipes and into the radial clearance to collect material, wherein a value of the second flow is less than a value of the first flow.