IPC Classification

Class code (prefix) Descriptions Number of results
F01D 1/00 Non-positive-displacement machines or engines, e.g. steam turbines
F01D 1/02 Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor
F01D 1/04 Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor traversed by the working-fluid substantially axially
F01D 1/06 Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor traversed by the working-fluid substantially radially
F01D 1/08 Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor traversed by the working-fluid substantially radially having inward flow
F01D 1/10 Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor having two or more stages subjected to working-fluid flow without essential intermediate pressure change, i.e. with velocity stages
F01D 1/12 Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor with repeated action on same blade ring
F01D 1/14 Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor with repeated action on same blade ring traversed by the working-fluid substantially radially
F01D 1/16 Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor characterised by having both reaction stages and impulse stages
F01D 1/18 Non-positive-displacement machines or engines, e.g. steam turbines without working-fluid guiding means
F01D 1/20 Non-positive-displacement machines or engines, e.g. steam turbines without working-fluid guiding means traversed by the working-fluid substantially axially
F01D 1/22 Non-positive-displacement machines or engines, e.g. steam turbines without working-fluid guiding means traversed by the working-fluid substantially radially
F01D 1/24 Non-positive-displacement machines or engines, e.g. steam turbines characterised by counter-rotating rotors subjected to same working-fluid stream without intermediate stator blades or the like
F01D 1/26 Non-positive-displacement machines or engines, e.g. steam turbines characterised by counter-rotating rotors subjected to same working-fluid stream without intermediate stator blades or the like traversed by the working-fluid substantially axially
F01D 1/28 Non-positive-displacement machines or engines, e.g. steam turbines characterised by counter-rotating rotors subjected to same working-fluid stream without intermediate stator blades or the like traversed by the working-fluid substantially radially
F01D 1/30 Non-positive-displacement machines or engines, e.g. steam turbines characterised by having a single rotor operable in either direction of rotation, e.g. by reversing of blades
F01D 1/32 Non-positive-displacement machines or engines, e.g. steam turbines with pressure/velocity transformation exclusively in rotor, e.g. the rotor rotating under the influence of jets issuing from the rotor
F01D 1/34 Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes
F01D 1/36 Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes using fluid friction
F01D 1/38 Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes of the screw type
F01D 3/00 Machines or engines with axial-thrust balancing effected by working fluid
F01D 3/02 Machines or engines with axial-thrust balancing effected by working fluid characterised by having one fluid flow in one axial direction and another fluid flow in the opposite direction
F01D 3/04 Machines or engines with axial-thrust balancing effected by working fluid axial thrust being compensated by thrust-balancing dummy piston or the like
F01D 5/00 Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
F01D 5/02 Blade-carrying members, e.g. rotors
F01D 5/03 Annular blade-carrying members having blades on the inner periphery of the annulus and extending inwardly radially, i.e. inverted rotors
F01D 5/04 Blade-carrying members, e.g. rotors for radial-flow machines or engines
F01D 5/06 Blade-carrying members, e.g. rotors - Details thereof, e.g. shafts, shaft connections
F01D 5/08 Heating, heat-insulating, or cooling means
F01D 5/10 Antivibration means
F01D 5/12 Blades
F01D 5/14 Form or construction
F01D 5/16 Form or construction for counteracting blade vibration
F01D 5/18 Hollow blades; Heating, heat-insulating, or cooling means on blades
F01D 5/20 Specially-shaped blade tips to seal space between tips and stator
F01D 5/22 Blade-to-blade connections, e.g. by shrouding
F01D 5/24 Blade-to-blade connections, e.g. by shrouding using wire or the like
F01D 5/26 Antivibration means not restricted to blade form or construction or to blade-to-blade connections
F01D 5/28 Selecting particular materials; Measures against erosion or corrosion
F01D 5/30 Fixing blades to rotors; Blade roots
F01D 5/32 Locking, e.g. by final locking-blades or keys
F01D 5/34 Rotor-blade aggregates of unitary construction
F01D 7/00 Rotors with blades adjustable in operation; Control thereof
F01D 7/02 Rotors with blades adjustable in operation; Control thereof having adjustment responsive to speed
F01D 9/00 Stators
F01D 9/02 Nozzles; Nozzle boxes; Stator blades; Guide conduits
F01D 9/04 Nozzles; Nozzle boxes; Stator blades; Guide conduits forming ring or sector
F01D 9/06 Fluid supply conduits to nozzles or the like
F01D 11/00 Preventing or minimising internal leakage of working fluid, e.g. between stages
F01D 11/02 Preventing or minimising internal leakage of working fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
F01D 11/04 Preventing or minimising internal leakage of working fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
F01D 11/06 Control thereof
F01D 11/08 Preventing or minimising internal leakage of working fluid, e.g. between stages for sealing space between rotor blade tips and stator
F01D 11/10 Preventing or minimising internal leakage of working fluid, e.g. between stages for sealing space between rotor blade tips and stator using sealing fluid, e.g. steam
F01D 11/12 Preventing or minimising internal leakage of working fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible, deformable or resiliently biased part
F01D 11/14 Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
F01D 11/16 Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means
F01D 11/18 Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means using stator or rotor components with predetermined thermal response, e.g. selective insulation, thermal inertia, differential expansion
F01D 11/20 Actively adjusting tip-clearance
F01D 11/22 Actively adjusting tip-clearance by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor
F01D 11/24 Actively adjusting tip-clearance by selectively cooling or heating stator or rotor components
F01D 13/00 Combinations of two or more machines or engines
F01D 13/02 Working-fluid interconnection of machines or engines
F01D 15/00 Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
F01D 15/02 Adaptations for driving vehicles, e.g. locomotives
F01D 15/04 Adaptations for driving vehicles, e.g. locomotives the vehicles being waterborne vessels
F01D 15/06 Adaptations for driving, or combinations with, hand-held tools or the like
F01D 15/08 Adaptations for driving, or combinations with, pumps
F01D 15/10 Adaptations for driving, or combinations with, electric generators
F01D 15/12 Combinations with mechanical gearing
F01D 17/00 Regulating or controlling by varying flow
F01D 17/02 Arrangement of sensing elements
F01D 17/04 Arrangement of sensing elements responsive to load
F01D 17/06 Arrangement of sensing elements responsive to speed
F01D 17/08 Arrangement of sensing elements responsive to condition of working fluid, e.g. pressure
F01D 17/10 Final actuators
F01D 17/12 Final actuators arranged in stator parts
F01D 17/14 Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
F01D 17/16 Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
F01D 17/18 Final actuators arranged in stator parts varying effective number of nozzles or guide conduits
F01D 17/20 Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
F01D 17/22 Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
F01D 17/24 Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical electrical
F01D 17/26 Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical fluid, e.g. hydraulic
F01D 19/00 Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
F01D 19/02 Starting of machines or engines; Regulating, controlling, or safety means in connection therewith dependent on temperature of component parts, e.g. of turbine casing
F01D 21/00 Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
F01D 21/02 Shutting-down responsive to overspeed
F01D 21/04 Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator, e.g. indicating such position
F01D 21/06 Shutting-down
F01D 21/08 Restoring position
F01D 21/10 Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to unwanted deposits on blades, in working-fluid conduits, or the like
F01D 21/12 Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to temperature
F01D 21/14 Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to other specific conditions
F01D 21/16 Trip gear
F01D 21/18 Trip gear involving hydraulic means
F01D 21/20 Checking operation of shut-down devices
F01D 23/00 Non-positive-displacement machines or engines with movement other than pure rotation, e.g. of endless-chain type
F01D 25/00 Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
F01D 25/02 De-icing means for engines having icing phenomena
F01D 25/04 Antivibration arrangements
F01D 25/06 Antivibration arrangements for preventing blade vibration
F01D 25/08 Cooling; Heating; Heat insulation
F01D 25/10 Heating, e.g. warming-up before starting
F01D 25/12 Cooling
F01D 25/14 Casings modified therefor
F01D 25/16 Arrangement of bearings; Supporting or mounting bearings in casings
F01D 25/18 Lubricating arrangements
F01D 25/20 Lubricating arrangements using lubrication pumps
F01D 25/22 Lubricating arrangements using working fluid or other gaseous fluid as lubricant
F01D 25/24 Casings; Casing parts, e.g. diaphragms, casing fastenings
F01D 25/26 Double casings; Measures against temperature strain in casings
F01D 25/28 Supporting or mounting arrangements, e.g. for turbine casing
F01D 25/30 Exhaust heads, chambers, or the like
F01D 25/32 Collecting of condensation water; Drainage
F01D 25/34 Turning or inching gear
F01D 25/36 Turning or inching gear using electric motors