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IPC 7
F03-F03B01706

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING


F 03MACHINES 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


F 03 BMACHINES 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)


Notes

(1)This subclass covers:

 engines, other than of positive-displacement type, driven by liquids;

 machines, other than of positive-displacement type, for liquids.

(2)Attention is drawn to the Notes preceding class F01, especially as regards the definition of "reaction type".


Subclass Index

TURBINES: IMPULSE; REACTION 

F03B 1/00; F03B 3/00 

MACHINES OR ENGINES: NON-BLADED ROTOR TYPE; WATER WHEELS; ENDLESS-CHAIN TYPE 

F03B 5/00; F03B 7/00; F03B 9/00 

PARTS OR DETAILS OF ABOVE KINDS 

F03B 1/00, F03B 3/00, F03B 11/00 

ADAPTATIONS OR COMBINATIONS 

F03B 13/00 

CONTROLLING 

F03B 15/00 

OTHER MACHINES OR ENGINES 

F03B 17/00 



Non-positive-displacement machines or engines characterised by specified type, e.g. water turbines (adaptations of machines or engines for special use F03B 13/00; controlling F03B 15/00)


1/

00Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on bladed or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto

1/

02.Buckets; Bucket-carrying rotors

1/

04.Nozzles (in general B05B); Nozzle-carrying members


3/

00Machines or engines of reaction type; Parts or details peculiar thereto

3/

02.with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines

3/

04.with substantially axial flow throughout rotors, e.g. propeller turbines

3/

06..with adjustable blades, e.g. Kaplan turbines

3/

08.with pressure/velocity transformation exclusively in rotors

3/

10.characterised by having means for functioning alternatively as pumps or turbines

3/

12.Blades; Blade-carrying rotors

3/

14..Rotors having adjustable blades

3/

16.Stators

3/

18..Stator blades; Guide conduits or vanes, e.g. adjustable


5/

00Machines or engines characterised by non-bladed rotors, e.g. serrated, using friction


7/

00Water wheels


9/

00Endless-chain type machines or engines



11/

00Parts or details not provided for in, or of interest apart from, the preceding groups (controlling F03B 15/00)

11/

02.Casings

11/

04.for diminishing cavitation or vibration, e.g. balancing

11/

06.Bearing arrangements

11/

08.for removing foreign matter, e.g. mud


13/

00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus (if the apparatus aspects are predominant, see the relevant places for such apparatus, e.g. H02K 7/18); Power stations or aggregates (hydraulic-engineering aspects E02B; incorporating only machines or engines of positive-displacement type F03C)

13/

02.Adaptations for drilling wells

13/

04.Adaptations for use in dentistry

13/

06.Stations or aggregates of water-storage type (turbines characterised by having means for functioning alternatively as pumps F03B 3/10)

13/

08.Machine or engine aggregates in dams or the like; Conduits therefor

13/

10.Submerged units incorporating electric generators or motors

13/

12.characterised by using wave or tide energy

13/

14..using wave energy  [4]

13/

16...using the relative movement between a wave-operated member and another member  [4]

13/

18....wherein the other member is fixed, at least at one point, with respect to the sea bed or shore  [4]

13/

20....wherein both members are movable relative to the sea bed or shore  [4]

13/

22...using the flow of water resulting from wave movements, e.g. to drive a hydraulic motor or turbine  [4]

13/

24...to produce a flow of air, e.g. to drive an air turbine  [4]

13/

26..using tide energy  [4]


15/

00Controlling (controlling in general G05)

15/

02.by varying liquid flow

15/

04..of turbines (rotors having adjustable blades F03B 3/06, F03B 3/14; adjustable guide vanes F03B 3/18; specially adapted for turbines with jets of high-velocity liquid impinging on bladed or like rotors F03B 15/20)

15/

06...Regulating, i.e. acting automatically

15/

08....by speed, e.g. by measuring electric frequency or liquid flow

15/

10.....without retroactive action

15/

12.....with retroactive action

15/

14....by or of water level

15/

16....by power output

15/

18....for safety purposes, e.g. preventing overspeed

15/

20..specially adapted for turbines with jets of high-velocity liquid impinging on bladed or like rotors (nozzles F03B 1/04)

15/

22...for safety purposes


17/

00Other machines or engines

17/

02.using hydrostatic thrust

17/

04..Alleged perpetua mobilia

17/

06.using liquid flow, e.g. of swinging-flap type


  
 

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