Skip over navigation
Main CPC Sections USPC Class Numbers & Titles USPC Class Numbers Classification Search Page Contacts Help
Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC)
Printable version [PDF]
CPC
COOPERATIVE PATENT CLASSIFICATION
Collapse
F03B
MACHINES OR ENGINES FOR LIQUIDS (positive-displacement engines for liquid F03C; machines for liquids and gases F01; positive-displacement machines for liquids F04 , rotary fluid gearing of the hydrokinetic type F16H 41/00)
NOTE
-
Attention is drawn to the notes preceding Class F01, especially as regards the definition of "reaction type".

This subclass comprises:

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

Collapse
Guide Heading:
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)
Collapse
F03B 1/00
Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
F03B 1/02
.
Buckets; Bucket-carrying rotors
F03B 1/04
.
Nozzles (in general B05B); Nozzle-carrying members
Collapse
F03B 3/00
Machines or engines of reaction type; Parts or details peculiar thereto
F03B 3/02
.
with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines
{
(rotors per se F03B 3/12C)
}
Collapse
F03B 3/04
.
with substantially axial flow throughout rotors, e.g. propeller turbines
{
(rotors per se F03B3/14D)
}
F03B 3/06
. .
with adjustable blades, e.g. Kaplan turbines
{
(rotors per se F03B 3/14)
}
F03B 3/08
.
with pressure-velocity transformation exclusively in rotors
Collapse
F03B 3/10
.
characterised by having means for functioning alternatively as pumps or turbines
{
starting F03B 15/005
}
F03B 3/103
. .
{
the same wheel acting as turbine wheel and as pump wheel
}
F03B 3/106
. .
{
the turbine wheel and the pumps wheel being mounted in adjacent positions on the same shaft in a single casing
}
Collapse
F03B 3/12
.
Blades; Blade-carrying rotors
Collapse
F03B 3/121
. .
{
Blades, their form or construction
}
F03B 3/123
. . .
{
specially designed as adjustable blades, e.g. for Kaplan-type turbines
}
F03B 3/125
. .
{
Rotors for radial flow at high-pressure side and axial flow at low-pressure side, e.g. for Francis-type turbines
}
F03B 3/126
. .
{
Rotors for essentially axial flow, e.g. for propeller turbines (with adjustable blades F03B 3/14)
}
F03B 3/128
. .
{
Mounting, demounting
}
Collapse
F03B 3/14
. .
Rotors having adjustable blades
{
blade form or construction F03B 3/123
}
F03B 3/145
. . .
{
Mechanisms for adjusting the blades (if the regulation aspect is preponderent, see F03B 15/00 and subgroups)
}
Collapse
F03B 3/16
.
Stators
Collapse
F03B 3/18
. .
Stator blades; Guide conduits or vanes, e.g. adjustable
{
Conduits in dams or the like F03B 13/08; arrangement of valves F03B 11/004
}
F03B 3/183
. . .
{
Adjustable vanes, e.g. wicket gates
}
F03B 3/186
. . .
{
Spiral or volute casings
}
F03B 5/00
Machines or engines characterised by non-bladed rotors, e.g. serrated, using friction
Collapse
F03B 7/00
Water wheels
{
of swinging flap type F03B 17/06
}
F03B 7/003
.
{
with buckets receiving the liquid
}
F03B 7/006
.
{
of the endless-chain type
}
Collapse
F03B 9/00
Endless-chain machines or engines
F03B 9/005
.
{
with buckets receiving the liquid
}
Collapse
F03B 11/00
Parts or details not provided for in, or of interest apart from, the preceding groups (controlling F03B 15/00),
{
e.g. wear-protection couplings, between turbine and generator
}
F03B 11/002
.
{
Injecting air or other fluid (F03D 11/0025, F03B 11/04, F03B 15/00 take precedence)
}
F03B 11/004
.
{
Valve arrangements (F03B 3/10 takes precedence; adjustable wicket gates F03B 3/183; valves in general F16K)
}
F03B 11/006
.
{
Sealing arrangements (F03B 3/14, F03B 3/183, F03B 13/083 takes precedence; sealings in general F16J)
}
F03B 11/008
.
{
Measuring or testing arrangements (in general G01)
}
Collapse
F03B 11/02
.
Casings
{
Spiral or volute casings F03B 3/186
}
F03B 11/025
. .
{
Covers
}
F03B 11/04
.
for diminishing cavitation or vibration, e.g. balancing
Collapse
F03B 11/06
.
Bearing arrangements
Collapse
F03B 11/063
. .
{
Arrangements for balancing axial thrust
}
F03B 11/066
. . .
{
in vertical axis machines
}
F03B 11/08
.
for removing foreign matter, e.g. mud
Collapse
F03B 13/00
Adaptations 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 subclasses for such apparatus, e.g. H02K 7/18); Power stations or aggregates (incorporating only machines or engines of positive-displacement type F03C; hydraulic engineering aspects E02B;
{
combinations with wind energy converters F03D 9/008
}
)
F03B 13/02
.
Adaptations for drilling wells
F03B 13/04
.
Adaptations for use in dentistry
{
for driving tools or the like having relatively small outer diameter, e.g. pipe cleaning tools
}
F03B 13/06
.
Stations or aggregates of water-storage type,
{
e.g. comprising a turbine and a pump
}
(turbines characterised by having means for functioning alternatively as pumps F03B 3/10)
Collapse
F03B 13/08
.
Machine or engine aggregates in dams or the like; Conduits therefor,
{
e.g. diffusors (bulb groups F03B 13/105)
}
F03B 13/083
. .
{
The generator rotor being mounted as turbine rotor rim
}
F03B 13/086
. .
{
Plants characterised by the use of siphons; their regulation (siphon weirs E02B 7/18; siphons in general F04F 10/00)
}
Collapse
F03B 13/10
.
Submerged units incorporating electric generators or motors
F03B 13/105
. .
{
Bulb groups
}
Collapse
F03B 13/12
.
characterised by using wave or tide energy
Collapse
F03B 13/14
. .
using wave energy
Collapse
F03B 13/141
. . .
{
with a static energy collector
}
F03B 13/142
. . . .
{
which creates an oscillating water column
}
Collapse
F03B 13/144
. . . .
{
which lifts water above sea level
}
F03B 13/145
. . . . .
{
for inmediate use in an energy converter
}
F03B 13/147
. . . . .
{
for later use
}
F03B 13/148
. . .
{
using the static pressure increase due to the wave
}
Collapse
F03B 13/16
. . .
using the relative movement between a wave-operated member,
{
i.e. a "wom"
}
 and another member,
{
i.e. a reaction member or "rem"
}
Collapse
F03B 13/18
. . . .
where the other member,
{
i.e. rem
}
 is fixed, at least at one point, with respect to the sea bed or shore
Collapse
F03B 13/1805
. . . . .
{
and the wom is hinged to the rem
}
Collapse
F03B 13/181
. . . . . .
{
for limited rotation
}
F03B 13/1815
. . . . . . .
{
with an up-and-down movement
}
F03B 13/182
. . . . . . .
{
with a to-and-fro movement
}
Collapse
F03B 13/1825
. . . . . .
{
for 360° rotation
}
F03B 13/183
. . . . . . .
{
of a turbine-like wom
}
F03B 13/1835
. . . . . . .
{
of an endless-belt type wom
}
F03B 13/184
. . . . . . .
{
of a water-wheel type wom
}
Collapse
F03B 13/1845
. . . . .
{
and the wom slides relative to the rem
}
F03B 13/185
. . . . . .
{
not vertically
}
Collapse
F03B 13/1855
. . . . . .
{
where the connection between wom and conversion system takes tension and compression (F03B 13/187, F03B 13/1875 take precedence)
}
F03B 13/186
. . . . . . .
{
the connection being of the rack-and-pinion type
}
F03B 13/1865
. . . . . .
{
where the connection between wom and conversion system takes tension only (F03B 13/187, F03B 13/1875 take precedence)
}
F03B 13/187
. . . . . .
{
and the wom directly actuates the piston of a pump
}
F03B 13/1875
. . . . . .
{
and the wom is the piston or the cylinder in a pump
}
F03B 13/188
. . . . .
{
and the wom is flexible or deformable
}
Collapse
F03B 13/1885
. . . . .
{
and the wom is tied to the rem
}
F03B 13/189
. . . . . .
{
acting directly on the piston of a pump
}
F03B 13/1895
. . . . . .
{
where the tie is a tension/compression member
}
F03B 13/20
. . . .
wherein both members
{
i.e. wom and rem
}
 are movable relative to the sea bed or shore
F03B 13/22
. . .
using the flow of water resulting from wave movements to drive a motor or turbine
{
(F03B 13/144 takes precedence)
}
F03B 13/24
. . .
to produce a flow of air, e.g. to drive an air turbine
{
(F03B 13/142 takes precedence)
}
Collapse
F03B 13/26
. .
using tide energy
F03B 13/262
. . .
{
using the relative movement between a tide-operated member and another member
}
F03B 13/264
. . .
{
using the horizontal flow of water resulting from tide movement
}
F03B 13/266
. . .
{
to compress air
}
F03B 13/268
. . .
{
making use of a dam
}
Collapse
F03B 15/00
Controlling (controlling in general G05)
{
regulation of plants characterised by the use of siphons F03B 13/086
}
F03B 15/005
.
{
Starting, also of pump-turbines
}
Collapse
F03B 15/02
.
by varying liquid flow
Collapse
F03B 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 inpinging on bladed or like rotors F03B 15/20)
Collapse
F03B 15/06
. . .
Regulating, i.e. acting automatically
Collapse
F03B 15/08
. . . .
by speed, e.g. by measuring electric frequency or liquid flow
F03B 15/10
. . . . .
without retroactive action
F03B 15/12
. . . . .
with retroactive action
F03B 15/14
. . . .
by or of water level
F03B 15/16
. . . .
by power output
F03B 15/18
. . . .
for safety purposes, e.g. preventing over-speed
Collapse
F03B 15/20
. .
specially adapted for turbines with jets of high-velocity liquid impinging on bladed or like rotors (nozzles F03B 1/04)
F03B 15/22
. . .
for safety purposes
Collapse
F03B 17/00
Other machines or engines
F03B 17/005
.
{
Installations wherein the liquid circulates in a closed loop (F03B 13/06 takes precedence); Alleged perpetua mobilia of this or similar kind (perpetua mobilia using hydrostatic thrust or buoyancy F03B 17/04)
}
Collapse
F03B 17/02
.
using hydrostatic thrust
F03B 17/025
. .
{
and reciprocating motion
}
F03B 17/04
. .
Alleged perpetua mobilia
{
(with closed loop circulation or similar F03B 17/005)
}
Collapse
F03B 17/06
.
using liquid flow
{
with predominantly kinetic energy conversion
}
, e.g. of swinging-flap type,
{
"run-of-river", "ultra-low head" (F03B 13/264 takes precedence)
}
F03B 17/061
. .
{
with rotation axis substantially in flow direction
}
Collapse
F03B 17/062
. .
{
with rotation axis substantially at right angle to flow direction
}
Collapse
F03B 17/063
. . .
{
the flow engaging parts having no movement relative to the rotor during its rotation
}
F03B 17/064
. . . .
{
and a rotor of the endless-chain type
}
Collapse
F03B 17/065
. . .
{
the flow engaging parts having a cyclic movement relative to the rotor during its rotation
}
F03B 17/066
. . . .
{
and a rotor of the endless-chain type
}
Collapse
F03B 17/067
. . . .
{
the cyclic relative movement being positively coupled to the movement of rotation
}
F03B 17/068
. . . . .
{
and a rotor of the endless-chain type
}
This page is owned by Office of Patent Classification.
Last Modified: 04/16/2013 4:31:16 PM