with direct-acting explosion chambers

Full Title

Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving (surface stabilisation E01C21/00; apparatus specially adapted for reconditioning or repairing paving E01C23/00) > for consolidating or finishing laid-down unset materials ( E01C23/02 take precedence; apparatus for generating vibrations in general B06B) > Tamping or vibrating apparatus other than rollers ( E01C23/02, E01C23/04 take precedence; vibrated depositing devices E01C19/12; tamping or vibrating rollers E01C19/28; portable percussion tools B25D; tamping or vibrating soil E02D3/046) > Power-driven rammers or tampers > with direct-acting explosion chambers