Cooperative Patent Classification

Indent Level

Version: 2016.11
CPC
COOPERATIVE PATENT CLASSIFICATION
F01D
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) [2013-01]
NOTES

  • This subclass covers:
    • non-positive-displacement engines for elastic fluids, e.g. steam turbines;
    • non-positive-displacement engines for liquids and elastic fluids;
    • non-positive-displacement machines for elastic fluids;
    • non-positive-displacement machines for liquids and elastic fluids.
  • Attention is drawn to the Notes preceding class F01, especially as regards the definitions of "reaction type", e.g. with airfoil-like blades, and "impulse type", e.g. bucket turbines.
WARNING

  • The following IPC groups are not used in the CPC system. Subject matter covered by these groups is classified in the following CPC groups:
    F01D5/32 covered by F01D 5/30
F01D 1/00
Non-positive-displacement machines or engines, e.g. steam turbines (wit working-fluid flows in opposite axial directions for balancing axial thrust F01D 3/02; with other than pure rotation F01D 23/00; turbines characterised by their use in special steam systems, cycles, or processes, regulating devices therefor F01K) [2013-01]
F01D 1/02
.
with stationary working-fluid guiding means and bladed or like rotor, {e.g. multi-bladed impulse steam turbines }(F01D 1/24 takes precedence; without stationary working-fluid guiding means F01D 1/18) [2013-01]
F01D 1/023
. .
{the working-fluid being divided into several separate flows (F01D 3/02 takes precedence); several seperate fluid flows being united in a single flow; the machine or engine having provision for two or more different possible fluid flow paths} [2013-01]
F01D 1/026
. .
{Impact turbines with buckets, i.e. impulse turbines, e.g. Pelton turbines (F01D 1/16, F01D 1/34 take precedence)} [2016-08]
F01D 1/04
. .
traversed by the working-fluid substantially axially [2013-01]
F01D 1/06
. .
traversed by the working-fluid substantially radially [2013-01]
F01D 1/08
. . .
having inward flow [2013-01]
F01D 1/10
. .
having two or more stages subjected to working-fluid flow without essential intermediate pressure change, i.e. with velocity stages (F01D 1/12 takes precedence) [2013-01]
F01D 1/12
. .
with repeated action on same blade ring [2013-01]
F01D 1/14
. . .
traversed by the working-fluid substantially radially [2013-01]
F01D 1/16
. .
characterised by having both reaction stages and impulse stages [2013-01]
F01D 1/18
.
without stationary working-fluid guiding means; (F01D 1/24, F01D 1/32, F01D 1/34 take precedence; {with pressure-velocity transformation exclusively in rotor F01D 1/32}) [2013-01]
F01D 1/20
. .
traversed by the working-fluid substantially axially [2013-01]
F01D 1/22
. .
traversed by the working-fluid substantially radially [2013-01]
F01D 1/24
.
characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like [2013-01]
F01D 1/26
. .
traversed by the working-fluid substantially axially [2013-01]
F01D 1/28
. .
traversed by the working-fluid substantially radially [2013-01]
F01D 1/30
.
characterised by having a single rotor operable in either direction of rotation, e.g. by reversing of blades (combinations of machines or engines F01D 13/00) [2013-01]
F01D 1/32
.
with pressure velocity transformation exclusively in rotor, e.g. the rotor rotating under the influence of jets issuing from the rotor, {e.g. Heron turbines (the working fluid being a combustion products F02C 3/165; jet propulsion plants per se F02K)} [2013-01]
F01D 1/34
.
characterised by non-bladed rotor, e.g. with drilled holes (F01D 1/32 takes precedence; sirens G10K 7/00 {impact turbines with buckets F01D 1/026; hand-held tools with a non-bladed rotor F01D 15/067}) [2013-01]
F01D 1/36
. .
using fluid friction [2013-01]
F01D 1/38
. .
of the screw type [2013-01]
F01D 3/00
Machines or engines with axial-thrust balancing effected by working-fluid [2013-01]
F01D 3/02
.
characterised by having one fluid flow in one axial direction and another fluid flow in the opposite direction [2013-01]
F01D 3/025
. .
{with a centrally disposed radial stage} [2013-01]
F01D 3/04
.
axial thrust being compensated by thrust-balancing dummy piston or the like [2013-01]
F01D 5/00
Blades; Blade-carrying members (nozzle boxes F01D 9/02); Heating, heat-insulating, cooling or anti-vibration means on the blades or the members {(special arrangements in rotors dealing with breaking off of part thereof F01D 21/045)} [2013-01]
F01D 5/005
.
{Repairing methods or devices} [2013-01]
F01D 5/02
.
Blade-carrying members, e.g. rotors (rotors of non-bladed type F01D 1/34; stators F01D 9/00 {selecting particular materials F01D 5/28}) [2013-01]
F01D 5/021
. .
{for flow machines or engines with only one axial stage (for more than one stage F01D 5/06)} [2013-01]
F01D 5/022
. .
{with concentric rows of axial blades} [2013-01]
F01D 5/023
. .
{of the screw type} [2013-01]
F01D 5/025
. .
{Fixing blade carrying members on shafts (attachment of a member on a shaft in general F16D 1/06; for non-positive displacement pumps F04D 29/00)} [2013-01]
F01D 5/026
. .
{Shaft to shaft connections} [2013-01]
F01D 5/027
. .
{Arrangements for balancing (for balancing rotating bodies in general F16F 15/32; for compensating unbalance G01M 1/36)} [2013-01]
F01D 5/028
. .
{the rotor disc being formed of sheet laminae (rotor blade aggregates of unitary construction F01D 5/34)} [2013-01]
F01D 5/03
. .
Annular blade-carrying members having blades on the inner periphery of the annulus and extending inwardly radially, i.e. inverted rotors [2013-01]
F01D 5/04
. .
for radial-flow machines or engines [2013-01]
F01D 5/041
. . .
{of the Ljungström type} [2013-01]
F01D 5/043
. . .
{of the axial inlet- radial outlet, or vice versa, type} [2016-08]
F01D 5/045
. . . .
{the wheel comprising two adjacent bladed wheel portions, e.g. with interengaging blades for damping vibrations} [2016-08]
F01D 5/046
. . . .
{Heating, heat insulation or cooling means} [2013-01]
F01D 5/048
. . . .
{Form or construction} [2013-01]
F01D 5/06
. .
Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections {(F01D 5/022, F01D 5/023 take precedence)} [2013-01]
F01D 5/063
. . .
{Welded rotors (welding per se B23K)} [2013-01]
F01D 5/066
. . .
{Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps} [2013-01]
F01D 5/08
. .
Heating, heat-insulating or cooling means {(specially adapted for radial flow machines or engines F01D 5/04)} [2013-01]
F01D 5/081
. . .
{Cooling fluid being directed on the side of the rotor disc or at the roots of the blades (F01D 5/087 takes precedence)} [2013-01]
F01D 5/082
. . . .
{on the side of the rotor disc} [2013-01]
F01D 5/084
. . . .
{the fluid circulating at the periphery of a multistage rotor, e.g. of drum type} [2013-01]
F01D 5/085
. . .
{cooling fluid circulating inside the rotor} [2013-01]
F01D 5/087
. . . .
{in the radial passages of the rotor disc} [2013-01]
F01D 5/088
. . . .
{in a closed cavity} [2013-01]
F01D 5/10
. .
Anti- vibration means {(specially adapted for radial flow machines or engines F01D 5/04)} [2013-01]
F01D 5/12
.
Blades ({specially adapted for radial flow machines or engines F01D 5/04 }; blade roots F01D 5/30; rotors with blades adjustable in operation F01D 7/00; stator blades F01D 9/02) [2013-01]
F01D 5/14
. .
Form or construction (selecting particular materials, measures against erosion or corrosion F01D 5/28) [2013-01]
F01D 5/141
. . .
{Shape, i.e. outer, aerodynamic form (F01D 5/148 - F01D 5/20 take precedence; blade construction F01D 5/147)} [2016-05]
F01D 5/142
. . . .
{of the blades of successive rotor or stator blade-rows} [2013-01]
F01D 5/143
. . . . .
{Contour of the outer or inner working fluid flow path wall, i.e. shroud or hub contour} [2013-01]
F01D 5/145
. . . .
{Means for influencing boundary layers or secondary circulations (for compressors F04D 29/68)} [2013-01]
F01D 5/146
. . . .
{of blades with tandem configuration, split blades or slotted blades} [2013-01]
F01D 5/147
. . .
{Construction, i.e. structural features, e.g. of weight-saving hollow blades (F01D 5/148, F01D 5/16 and F01D 5/20 take precedence; blade shape F01D 5/141; blades with cooling or heating channels or cavities F01D 5/18; heating, heat-insulating or cooling means on blades F01D 5/18)} [2013-01]
F01D 5/148
. . .
{Blades with variable camber, e.g. by ejection of fluid} [2013-01]
F01D 5/16
. . .
for counteracting blade vibration [2013-01]
F01D 5/18
. . .
Hollow blades, {i.e. blades with cooling or heating channels or cavities (structure of hollow blades in general F01D 5/147)}; Heating, heat-insulating or cooling means on blades [2013-01]
F01D 5/181
. . . .
{Blades having a closed internal cavity containing a cooling medium, e.g. sodium} [2013-01]
F01D 5/182
. . . .
{Transpiration cooling} [2013-01]
F01D 5/183
. . . . .
{Blade walls being porous} [2013-01]
F01D 5/184
. . . . .
{Blade walls being made of perforated sheet laminae} [2013-01]
F01D 5/185
. . . .
{Liquid cooling (F01D 5/181 takes precedence)} [2013-01]
F01D 5/186
. . . .
{Film cooling (F01D 5/187 takes precedence)} [2013-01]
F01D 5/187
. . . .
{Convection cooling} [2013-01]
F01D 5/188
. . . . .
{with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall} [2013-01]
F01D 5/189
. . . . . .
{the insert having a tubular cross-section, e.g. airfoil shape} [2013-01]
F01D 5/20
. . .
Specially-shaped blade tips to seal space between tips and stator {(F01D 5/225 takes precedence)} [2013-01]
F01D 5/22
. .
Blade-to-blade connections, {e.g. for damping vibrations} [2013-01]
F01D 5/225
. . .
{by shrouding} [2013-01]
F01D 5/24
. . .
using wire or the like [2013-01]
F01D 5/26
. .
Antivibration means not restricted to blade form or construction or to blade-to-blade connections {or to the use of particular materials} [2013-01]
F01D 5/28
. .
Selecting particular materials; {Particular measures relating thereto;} Measures against erosion or corrosion [2013-01]
F01D 5/282
. . .
{Selecting composite materials, e.g. blades with reinforcing filaments} [2013-01]
F01D 5/284
. . .
{Selection of ceramic materials} [2013-01]
F01D 5/286
. . .
{Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion (F01D 5/288 takes precedence)} [2013-01]
F01D 5/288
. . .
{Protective coatings for blades} [2013-01]
F01D 5/30
.
Fixing blades to rotors; Blade roots; {Blade spacers} [2013-01]
F01D 5/3007
. .
{of axial insertion type} [2013-01]
F01D 5/3015
. . .
{with side plates} [2013-01]
F01D 5/3023
. .
{of radial insertion type, e.g. in individual recesses} [2013-01]
F01D 5/303
. . .
{in a circumferential slot} [2013-01]
F01D 5/3038
. . . .
{the slot having inwardly directed abutment faces on both sides} [2013-01]
F01D 5/3046
. . .
{the rotor having ribs around the circumference} [2013-01]
F01D 5/3053
. .
{by means of pins} [2013-01]
F01D 5/3061
. .
{by welding, brazing} [2013-01]
F01D 5/3069
. .
{between two discs or rings} [2013-01]
F01D 5/3076
. .
{Sheet metal discs} [2013-01]
F01D 5/3084
. .
{the blades being made of ceramics} [2013-01]
F01D 5/3092
. .
{Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers (F01D 5/288 takes precedence)} [2013-01]
F01D 5/32
. .
Locking, e.g. by final locking blades or keys [2014-02]
F01D 5/323
. .
{Locking of axial insertion type blades by means of a key or the like parallel to the axis of the rotor} [2013-01]
F01D 5/326
. .
{Locking of axial insertion type blades by other means} [2013-01]
F01D 5/34
.
Rotor-blade aggregates of unitary construction {, e.g. formed of sheet laminae; (discs formed of sheet laminae F01D 5/028; Ceramic materials F01D 5/284, composite materials F01D 5/282)} [2016-08]
F01D 7/00
Rotors with blades adjustable in operation; Control thereof (for reversing F01D 1/30) [2013-01]
F01D 7/02
.
having adjustment responsive to speed [2013-01]
F01D 9/00
Stators (non-fluid guiding aspects of casings, regulating, controlling, or safety aspects, see the relevant groups) [2013-01]
F01D 9/02
.
Nozzles; Nozzle boxes; Stator blades; Guide conduits {, e.g. individual nozzles (nozzle boxes F01D 9/047)} [2016-08]
F01D 9/023
. .
{Transition ducts between combustor cans and first stage of the turbine in gas-turbine engines; their cooling or sealings} [2013-01]
F01D 9/026
. .
{Scrolls for radial machines or engines} [2013-01]
F01D 9/04
. .
forming ring or sector [2013-01]
F01D 9/041
. . .
{using blades (F01D 5/148 takes precedence)} [2013-01]
F01D 9/042
. . .
{fixing blades to stators (fixing stator-rings in the casing or to each other F01D 25/246)} [2013-01]
F01D 9/044
. . . .
{permanently, e.g. by welding, brazing, casting or the like} [2013-01]
F01D 9/045
. . .
{for radial flow machines or engines} [2013-01]
F01D 9/047
. . .
{Nozzle boxes} [2013-01]
F01D 9/048
. . .
{for radial admission} [2013-01]
F01D 9/06
.
Fluid supply conduits to nozzles or the like [2013-01]
F01D 9/065
. .
{Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids (see also F01D 25/16, F01D 25/24 and F01D 25/26)} [2016-08]
F01D 11/00
Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {sealing arrangements for transition ducts of combustor cans F01D 9/023}) [2013-01]
F01D 11/001
.
{for sealing space between stator blade and rotor} [2013-01]
F01D 11/003
.
{by packing rings; Mechanical seals} [2013-01]
F01D 11/005
.
{Sealing means between non relatively rotating elements} [2013-01]
F01D 11/006
. .
{Sealing the gap between rotor blades or blades and rotor} [2013-01]
F01D 11/008
. . .
{by spacer elements between the blades, e.g. independent interblade platforms} [2013-01]
F01D 11/02
.
by non-contact sealings, e.g. of labyrinth type (for sealing space between rotor blade tips and stator F01D 11/08) [2013-01]
F01D 11/025
. .
{Seal clearance control; Floating assembly; Adaptation means to differential thermal dilatations} [2013-01]
F01D 11/04
. .
using sealing fluid, e.g. steam [2013-01]
F01D 11/06
. . .
Control thereof [2013-01]
F01D 11/08
.
for sealing space between rotor blade tips and stator (specially-shaped blade tips therefor F01D 5/20) [2013-01]
F01D 11/10
. .
using sealing fluid, e.g. steam [2013-01]
F01D 11/12
. .
using a rubstrip, e.g. erodible. deformable or resiliently-biased part [2013-01]
F01D 11/122
. . .
{with erodable or abradable material (blades having cutting or grinding tips F01D 5/20)} [2013-01]
F01D 11/125
. . . .
{with a reinforcing structure} [2013-01]
F01D 11/127
. . .
{with a deformable or crushable structure, e.g. honeycomb} [2013-01]
F01D 11/14
. .
Adjusting or regulating tip-clearance, i.e distance between rotor-blade tips and stator casing (rotors with blades adjustable in operation F01D 7/00) [2013-01]
F01D 11/16
. . .
by self-adjusting means (F01D 11/12 takes precedence) [2013-01]
F01D 11/18
. . . .
using stator or rotor components with predetermined thermal response, e.g. selective insulation, thermal inertia, differential expansion [2013-01]
F01D 11/20
. . .
Actively adjusting tip-clearance [2013-01]
F01D 11/22
. . . .
by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor [2013-01]
F01D 11/24
. . . .
by selectively cooling-heating stator or rotor components [2013-01]
F01D 13/00
Combinations of two or more machines or engines (F01D 15/00 takes precedence; regulating or controlling, see the relevant groups; combinations of two or more pumps F04; fluid gearing F16H) [2013-01]
F01D 13/003
.
{with at least two independent shafts, i.e. cross-compound} [2013-01]
F01D 13/006
.
{one being a reverse turbine} [2013-01]
F01D 13/02
.
Working-fluid interconnection of machines or engines [2013-01]
F01D 15/00
Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby (regulating or controlling see the relevant groups; aspects predominantly concerning driven devices, see the relevant classes for the devices) [2013-01]
F01D 15/005
.
{Adaptations for refrigeration plants} [2013-01]
F01D 15/02
.
Adaptations for driving vehicles, e.g. locomotives (arrangement in vehicles, see the relevant vehicle classes) [2013-01]
F01D 15/04
. .
the vehicles being waterborne vessels [2013-01]
F01D 15/045
. . .
{Control thereof} [2013-01]
F01D 15/06
.
Adaptations for driving, or combinations with, hand-held tools or the like {control thereof} [2013-01]
F01D 15/062
. .
{Controlling means specially adapted therefor} [2013-01]
F01D 15/065
. .
{with pressure-velocity transformation exclusively in rotor} [2013-01]
F01D 15/067
. .
{characterised by non-bladed rotor} [2013-01]
F01D 15/08
.
Adaptations for driving, or combinations with, pumps [2013-01]
F01D 15/10
.
Adaptations for driving, or combinations with, electric generators [2013-01]
F01D 15/12
.
Combinations with mechanical gearing (driven by multiple engines F01D 13/00) [2013-01]
F01D 17/00
Regulating or controlling by varying flow (for reversing F01D 1/30; by varying rotor-blade position F01D 7/00; specially for starting F01D 19/00; shutting-down F01D 21/00; regulating or controlling in general G05 {specially adapted for hand-held tools or the like F01D 15/06}) [2013-01]
F01D 17/02
.
Arrangement of sensing elements (sensing elements per se: see the relevant subclasses) [2013-01]
F01D 17/04
. .
responsive to load [2013-01]
F01D 17/06
. .
responsive to speed [2013-01]
F01D 17/08
. .
responsive to condition of working-fluid, e.g. pressure [2013-01]
F01D 17/085
. . .
{to temperature} [2013-01]
F01D 17/10
.
Final actuators (valves in general F16K {blades with variable camber F01D 5/148}) [2013-01]
F01D 17/105
. .
{by passing part of the fluid} [2013-01]
F01D 17/12
. .
arranged in stator parts [2013-01]
F01D 17/14
. . .
varying effective cross-sectional area of nozzles or guide conduits [2013-01]
F01D 17/141
. . . .
{by means of shiftable members or valves obturating part of the flow path} [2013-01]
F01D 17/143
. . . . .
{the shiftable member being a wall, or part thereof of a radial diffuser} [2013-01]
F01D 17/145
. . . . .
{by means of valves, e.g. for steam turbines (valves in general F16K)} [2013-01]
F01D 17/146
. . . .
{by throttling the volute inlet of radial machines or engines} [2013-01]
F01D 17/148
. . . .
{by means of rotatable members, e.g. butterfly valves} [2013-01]
F01D 17/16
. . . .
by means of nozzle vanes [2013-01]
F01D 17/162
. . . . .
{for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line (F01D 17/167 takes precedence)} [2016-08]
F01D 17/165
. . . . .
{for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line (F01D 17/167 takes precedence)} [2016-08]
F01D 17/167
. . . . .
{of vanes moving in translation} [2013-01]
F01D 17/18
. . .
varying effective number of nozzles or guide conduits {, e.g. sequentially operable valves for steam turbines} [2016-08]
F01D 17/20
.
Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted (sensing elements alone F01D 17/02; final actuators alone F01D 17/10) [2013-01]
F01D 17/205
. .
{Centrifugal governers directly linked to valves} [2013-01]
F01D 17/22
. .
the operation or power assistance being predominantly non-mechanical [2013-01]
F01D 17/24
. . .
electrical [2013-01]
F01D 17/26
. . .
fluid, e.g. hydraulic [2013-01]
F01D 19/00
Starting of machines or engines; Regulating, controlling, or safety means in connection therewith (warming-up before starting F01D 25/10; turning or inching gear F01D 25/34) [2013-01]
F01D 19/02
.
dependent on temperature of component parts, e.g. of turbine-casing [2013-01]
F01D 21/00
Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for [2013-01]
F01D 21/003
.
{Arrangements for testing or measuring (for measuring vibrations G01H)} [2013-01]
F01D 21/006
.
{Arrangements of brakes (brakes per se F16D)} [2013-01]
F01D 21/02
.
Shutting-down responsive to overspeed [2013-01]
F01D 21/04
.
responsive to undesired position of rotor relative to stator {or to breaking-off of a part of the rotor}, e.g. indicating such position [2013-01]
F01D 21/045
. .
{special arrangements in stators or in rotors dealing with breaking-off of part of rotor} [2013-01]
F01D 21/06
. .
Shutting-down [2013-01]
F01D 21/08
. .
Restoring position [2013-01]
F01D 21/10
.
responsive to unwanted deposits on blades, in working-fluid conduits or the like [2013-01]
F01D 21/12
.
responsive to temperature [2013-01]
F01D 21/14
.
responsive to other specific conditions [2013-01]
F01D 21/16
.
Trip gear [2013-01]
F01D 21/18
. .
involving hydraulic means [2013-01]
F01D 21/20
.
Checking operation of shut-down devices [2013-01]
F01D 23/00
Non-positive-displacement machines or engines with movement other than pure rotation, e.g. of endless-chain type [2013-01]
F01D 25/00
Component parts, details, or accessories, not provided for in, or of interest apart from, other groups [2013-01]
F01D 25/002
.
{Cleaning of turbomachines} [2013-01]
F01D 25/005
.
{Selecting particular materials} [2013-01]
F01D 25/007
.
{Preventing corrosion} [2013-01]
F01D 25/02
.
De-icing means for engines having icing phenomena [2013-01]
F01D 25/04
.
Antivibration arrangements [2013-01]
F01D 25/06
. .
for preventing blade vibration (means on blade-carrying members or blades F01D 5/00) [2013-01]
F01D 25/08
.
Cooling (of machines or engines in general F01P); Heating; Heat-insulation (of blade-carrying members, of blades F01D 5/00) [2013-01]
F01D 25/10
. .
Heating, e.g. warming-up before starting [2013-01]
F01D 25/12
. .
Cooling [2013-01]
F01D 25/125
. . .
{of bearings} [2013-01]
F01D 25/14
. .
Casings modified therefor (double casings F01D 25/26) [2013-01]
F01D 25/145
. . .
{Thermally insulated casings} [2013-01]
F01D 25/16
.
Arrangement of bearings; Supporting or mounting bearings in casings (bearings per se F16C) [2013-01]
F01D 25/162
. .
{Bearing supports} [2013-01]
F01D 25/164
. . .
{Flexible supports; Vibration damping means associated with the bearing} [2013-01]
F01D 25/166
. .
{Sliding contact bearing (gas bearings F01D 25/22)} [2013-01]
F01D 25/168
. . .
{for axial load mainly} [2013-01]
F01D 25/18
.
Lubricating arrangements (of machines or engines in general F01M) [2013-01]
F01D 25/183
. .
{Sealing means} [2013-01]
F01D 25/186
. . .
{for sliding contact bearing} [2013-01]
F01D 25/20
. .
using lubrication pumps [2013-01]
F01D 25/22
. .
using working-fluid or other gaseous fluid as lubricant [2013-01]
F01D 25/24
.
Casings (modified for heating or cooling F01D 25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {special arrangements in stators dealing with breaking-off of part of rotor F01D 21/045}) [2013-01]
F01D 25/243
. .
{Flange connections; Bolting arrangements (F01D 25/265 takes precedence)} [2013-01]
F01D 25/246
. .
{Fastening of diaphragms or stator-rings} [2013-01]
F01D 25/26
. .
Double casings; Measures against temperature strain in casings [2013-01]
F01D 25/265
. . .
{Vertically split casings; Clamping arrangements therefor} [2013-01]
F01D 25/28
.
Supporting or mounting arrangements, e.g. for turbine casing [2013-01]
F01D 25/285
. .
{Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures} [2013-01]
F01D 25/30
.
Exhaust heads, chambers, or the like [2013-01]
F01D 25/305
. .
{with fluid, e.g. liquid injection} [2013-01]
F01D 25/32
.
Collecting of condensation water; Drainage {Removing solid particles} [2013-01]
F01D 25/34
.
Turning or inching gear [2013-01]
F01D 25/36
. .
using electric motors [2013-01]