Patent ID: 8302514

Claim:
A device for processing a pipe, said device comprising: a housing; a bearing mounted on said housing, said bearing being movable relatively to said housing; a drive roller mounted on said bearing and rotatable about a first axis, said drive roller having a circumferential surface engageable with an inner surface of said pipe; at least one spring element in contact with said bearing and said housing for biasing said drive roller into engagement with said inner surface of said pipe; at least a first support roller mounted on said housing in spaced relation to said drive roller, said first support roller being rotatable about an axis oriented substantially parallel to said first axis, said first support roller having a circumferential surface engageable with an outer surface of said pipe, said first support roller being adjustably movable toward and away from said first axis; means for rotating said drive roller about said first axis, rotation of said drive roller causing relative motion between said device and said pipe when said longitudinal axis of said pipe is oriented substantially parallel to said first axis, said spring element biasing said drive roller into engagement with said inner surface of said pipe, said drive roller being movable toward and away from said support roller upon motion of said bearing relatively to said housing thereby compensating for a variation in sidewall thickness of said pipe.