Patent ID: 7497642

Claim:
A drum roller for a compacting machine comprising: a. a first roller drum having a central axle rotably journaled to a supporting frame adapted to attach to the chassis of a compacting machine, said first roller being a cylinder having a ground contacting zone and end edges perpendicular to said axle, and b. a second cylindrical roller having a diameter different than said first roller, said second roller journaled to a central axle having one end attached to said supporting frame, and extending outwardly through and terminating within said second roller, and a ground contacting zone closely adjacent and parallel to the ground contacting zone of said first roller, and c. a gap between the rims of said first and second rollers for admitting said supporting frame to the region of said axles, whereby d. said ground contacting surfaces co-operate as a single surface to compact material under the rollers, and said second roller having the hub of its axle within the cylinder of said second roller whereby the compactor is adapted to operate closely adjacent to obstacles.