Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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F01C
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
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3/00
Rotary-piston machines or engines with non-parallel axes of movement of co-operating members
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F01C3/02
the axes being arranged at an angle of 90 degrees
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F01C3/025
of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
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