MACHINES OR ENGINES FOR LIQUIDS (for liquids and gases Fulltext... Hierarchy... Expanded...F01; positive-displacement machines for liquids Fulltext... Hierarchy... Expanded...F04); WIND, SPRING, WEIGHT, OR MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
Attention is drawn to the notes preceding class Fulltext... Hierarchy... Expanded...F01, especially as regards the definition of "positive displacement".
with a common valve-gear for more than one cylinder
F03C 1/20
· · ·
specially for engines generating vibration only
F03C 1/22
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with movable cylinders
F03C 1/24
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in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders
F03C 1/26
·
adapted for special use or combined with apparatus driven thereby (aspects predominantly concerning the driven apparatus, see the relevant classes for such apparatus)
F03C 3/00
Rotary-piston or oscillating-piston engines (in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders Fulltext... Hierarchy... Expanded...F03C 1/24)