ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES

Introduced: September 1968

Classification Context

Section:: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:: MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
Subclass:: ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES

Description

F01C encompasses rotary-piston and oscillating-piston machines that convert fluid pressure or thermal energy into mechanical motion through rotational or reciprocating movement of pistons around a central axis or pivot point. This subclass covers various positive-displacement pump and motor designs, including Wankel engines, rotating vane machines, radial and axial piston units, and swashplate mechanisms. It excludes reciprocating engines with linear piston motion (classified in F01B) and turbomachines (classified in F01D), but includes both compressors and expanders operating on these piston principles across hydraulic, pneumatic, and internal combustion applications.

Related Keywords

SCREW(S) motors actuated by fluids

11 direct subcodes

Child Classifications

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F01C 1/00 Rotary-piston machines or engines
F01C 11/00 Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
F01C 13/00 Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
F01C 17/00 Arrangements for drive of co-operating members, e.g. for rotary piston and casing
F01C 19/00 Sealing arrangements in rotary-piston machines or engines
F01C 20/00 Control of, monitoring of, or safety arrangements for, machines or engines
F01C 21/00 Component parts, details, or accessories, not provided for in groups
F01C 3/00 Rotary-piston machines or engines with non-parallel axes of movement of co-operating members
F01C 5/00 Rotary-piston machines or engines with the working-chamber walls at least partly resiliently deformable
F01C 7/00 Rotary-piston machines or engines with fluid ring or the like
F01C 9/00 Oscillating-piston machines or engines