F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINES AND PUMPS
 F03
MACHINES OR ENGINES FOR LIQUIDS (for liquids and elastic fluids F01; positive-displacement machines for liquids F04); WIND, SPRING, WEIGHT, OR MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
 F03B
MACHINES OR ENGINES FOR LIQUIDS (machines or engines for liquids and elastic fluids F01; positive-displacement engines for liquids F03C; positive-displacement machines for liquids F04)
 F03B

Note(s)

  1. Attention is drawn to the notes preceding class F01, especially as regards the definition of "reaction type".
  2. This sub-class comprises
    1. engines, other than of positive-displacement type, driven by liquids,
    2. machines, other than of positive-displacement type, for liquids.

 F03C
POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS (positive-displacement engines for liquids and elastic fluids F01; positive-displacement machines for liquids F04; fluid-pressure actuators F15B; fluid gearing F16H)
 F03C

Note(s)

Attention is drawn to the notes preceding class F01, especially as regards the meanings of "positive displacement", "rotary-piston machines", "oscillating-piston machines", "rotary-piston", "co-operating members", "movement of co-operating members", "teeth or tooth-equivalents", and "internal axis".


 F03D
WIND MOTORS
 F03D

Note(s)

In this sub-class, the following terms are used with the meanings indicated:

  1. "Wind motor" means a mechanism for converting the energy of natural wind into useful mechanical power, and the transmission of such power to its point of use.
  2. "Rotor" means the wind-engaging parts of the wind motor and the rotary member carrying them.
  3. "Rotation axis" means the axis of rotation of the rotor.


 F03G
SPRING, WEIGHT, INERTIA, OR LIKE MOTORS; MECHANICAL-POWER-PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
 F03G

Note(s)

In this sub-class, the term "motors" means mechanisms for producing mechanical power from potential energy of solid bodies.


 F03H
PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR (from combustion products F02K)