IPIQ

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F01

MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES

F01C

ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES

1/00

Rotary-piston machines or engines

F01C1/08

of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing

F01C1/12

of other than internal-axis type

F01C1/14

with toothed rotary pistons

F01C1/20

with dissimilar tooth forms