Patent ID: 8082823

Claim:
Apparatus for preparing the surface of polyethylene conduit comprising: a stationary frame positioned in surrounding relation with the conduit extending axially through said frame, a housing rotatably positioned within said frame adjacent to the conduit, support means for rotatably supporting said housing within said frame for rotation of said housing around the conduit, a scraper tool assembly mounted on said housing in a fixed longitudinal position for rotation with said housing around the surface of the conduit, said scraper tool assembly including a blade having a cutting edge extending longitudinally a preselected length on the conduit, adjustment means on said scraper tool assembly for moving said cutting edge into and out of contact with the surface of the conduit to remove a uniform layer of material from the surface of the conduit, and drive means for rotating said housing within said stationary frame to rotate said scraper tool assembly around the surface of the conduit so that said cutting edge removes a layer of material from the surface of the conduit the length of said cutting edge completely around the conduit.