ROAD ROLLER Russian patent published in 1996 - IPC

FIELD: road building machinery. SUBSTANCE: road roller has frame, self-propelled chassis with sealing working members and means to build vacuum. Vacuum chamber is mounted on frame. Vacuum chamber communicates with pneumatic chamber. Pneumatic chamber is formed by upper wall of vacuum chamber and flexible members. Perforated disk is used to build vacuum. Disk is installed along vertical axis in vacuum chamber. Disk is provided with blades. Holes are made over perimeter of vacuum chamber. EFFECT: improved compaction of road materials, reduced energy consumption at compacting and provision of high-quality road coating. 1 dwg