F04D1/00	7	Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (adapted for pumping specific fluids F04D7/00; priming or boosting F04D9/00)	F04D1/00	F04D1/00		1584
F04D1/003	8	{Having contrarotating parts}	F04D1/00	F04D1/00		47
F04D1/006	8	{double suction pumps}	F04D1/00	F04D1/00		564
F04D1/02	8	having non-centrifugal stages, e.g. centripetal	F04D1/02	F04D1/02		106
F04D1/025	9	{Comprising axial and radial stages}	F04D1/02	F04D1/02		66
F04D1/04	8	Helico-centrifugal pumps	F04D1/04	F04D1/04		332
F04D1/06	8	Multi-stage pumps (F04D1/02, F04D13/10 take precedence)	F04D1/06	F04D1/06		1431
F04D1/063	9	{of the vertically split casing type}	F04D1/06	F04D1/06		519
F04D1/066	10	{the casing consisting of a plurality of annuli bolted together}	F04D1/06	F04D1/06		251
F04D1/08	9	the stages being situated concentrically	F04D1/08	F04D1/08		316
F04D1/10	9	with means for changing the flow-path through the stages, e.g. series-parallel, e.g. side loads	F04D1/10	F04D1/10		172
F04D1/12	8	Pumps with scoops or like paring members protruding in the fluid circulating in a bowl	F04D1/12	F04D1/12		330
F04D1/14	8	Pumps raising fluids by centrifugal force within a conical rotary bowl with vertical axis	F04D1/14	F04D1/14		231
F04D3/00	7	Axial-flow pumps (priming or boosting F04D9/00)	F04D3/00	F04D3/00		1117
F04D3/005	8	{with a conventional single stage rotor}	F04D3/00	F04D3/00		417
F04D3/02	8	of screw type	F04D3/02	F04D3/02		1049
F04D5/00	7	Pumps with circumferential or transverse flow {(control thereof F04D15/005)}	F04D5/00	F04D5/00		528
F04D5/001	8	{Shear force pumps}	F04D5/00	F04D5/00		306
F04D5/002	8	{Regenerative pumps (for elastic fluids F04D23/008)}	F04D5/00	F04D5/00		960
F04D5/003	9	{of multistage type}	F04D5/00	F04D5/00		34
F04D5/005	10	{the stages being radially offset}	F04D5/00	F04D5/00		70
F04D5/006	10	{the stages being axially offset}	F04D5/00	F04D5/00		117
F04D5/007	9	{Details of the inlet or outlet}	F04D5/00	F04D5/00		179
F04D5/008	9	{Details of the stator, e.g. channel shape}	F04D5/00	F04D5/00		46
F04D7/00	7	Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts (F04D11/005, F04D29/22 take precedence)	F04D7/00	F04D7/00		427
F04D7/02	8	of centrifugal type	F04D7/02	F04D7/02		595
F04D7/04	9	the fluids being viscous or non-homogenous	F04D7/04	F04D7/04		1808
F04D7/045	10	{with means for comminuting, mixing stirring or otherwise treating}	F04D7/04	F04D7/04		1495
F04D7/06	9	the fluids being hot or corrosive, e.g. liquid metals	F04D7/06	F04D7/06		736
F04D7/065	10	{for liquid metal}	F04D7/06	F04D7/06		290
F04D7/08	9	the fluids being radioactive	F04D7/08	F04D7/08		132
F04D9/00	7	Priming; Preventing vapour lock	F04D9/00	F04D9/00		177
F04D9/001	8	{Preventing vapour lock (F04D9/041 takes precedence)}	F04D9/00	F04D9/00		236
F04D9/002	9	{by means in the very pump (F04D9/041 takes precedence)}	F04D9/00	F04D9/00		177
F04D9/003	10	{separating and removing the vapour}	F04D9/00	F04D9/00		299
F04D9/004	8	{Priming of not self-priming pumps}	F04D9/00	F04D9/00		97
F04D9/005	9	{by adducting or recycling liquid (F04D9/006 takes precedence)}	F04D9/00	F04D9/00		471
F04D9/006	9	{by venting gas or using gas valves}	F04D9/00	F04D9/00		217
F04D9/007	8	{Preventing loss of prime, siphon breakers (stopping of pumps F04D15/02)}	F04D9/00	F04D9/00		93
F04D9/008	9	{by means in the suction mouth, e.g. foot valves}	F04D9/00	F04D9/00		128
F04D9/02	8	Self-priming pumps	F04D9/02	F04D9/02		1017
F04D9/04	8	using priming pumps; using booster pumps to prevent vapour-lock	F04D9/04	F04D9/04		290
F04D9/041	9	{the priming pump having evacuating action (F04D9/043 and F04D9/06 take precedence)}	F04D9/04	F04D9/04		414
F04D9/042	10	{and means for rendering its in operative}	F04D9/04	F04D9/04		156
F04D9/043	9	{the priming pump being hand operated or of the reciprocating type}	F04D9/04	F04D9/04		116
F04D9/044	9	{Means for rendering the priming pump inoperative}	F04D9/04	F04D9/04		15
F04D9/045	10	{the means being liquid level sensors}	F04D9/04	F04D9/04		30
F04D9/046	11	{the means being floats}	F04D9/04	F04D9/04		53
F04D9/047	10	{the means being flow sensors}	F04D9/04	F04D9/04		17
F04D9/048	10	{the means being outlet pressure sensors}	F04D9/04	F04D9/04		70
F04D9/049	10	{by operator interventions}	F04D9/04	F04D9/04		35
F04D9/06	9	of jet type	F04D9/06	F04D9/06		412
F04D9/065	10	{the driving fluid being a gas or vapour, e.g. exhaust of a combustion engine}	F04D9/06	F04D9/06		138
F04D11/00	7	Other rotary non-positive-displacement pumps (pumping installations or systems F04D13/00)	F04D11/00	F04D11/00		152
F04D11/005	8	{Swash-type impeller pumps}	F04D11/00	F04D11/00		125
F04D13/00	7	Pumping installations or systems (controlling F04D15/00)	F04D13/00	F04D13/00		180
F04D13/02	8	Units comprising pumps and their driving means	F04D13/02	F04D13/02		1020
F04D13/021	9	{containing a coupling}	F04D13/02	F04D13/02		771
F04D13/022	10	{a coupling allowing slip, e.g. torque converter}	F04D13/02	F04D13/02		180
F04D13/023	11	{for reducing start torque}	F04D13/02	F04D13/02		3
F04D13/024	10	{a magnetic coupling}	F04D13/02	F04D13/02		648
F04D13/025	11	{Details of the can separating the pump and drive area}	F04D13/02	F04D13/02		229
F04D13/026	11	{Details of the bearings}	F04D13/02	F04D13/02		413
F04D13/027	11	{Details of the magnetic circuit}	F04D13/02	F04D13/02		431
F04D13/028	9	{the driving means being a planetary gear}	F04D13/02	F04D13/02		125
F04D13/04	9	the pump being fluid driven	F04D13/04	F04D13/04		800
F04D13/043	10	{the pump wheel carrying the fluid driving means}	F04D13/04	F04D13/04		213
F04D13/046	10	{the fluid driving means being a hydraulic motor of the positive displacement type}	F04D13/04	F04D13/04		123
F04D13/06	9	the pump being electrically driven	F04D13/06	F04D13/06		6578
F04D13/0606	10	{Canned motor pumps}	F04D13/06	F04D13/06		1459
F04D13/0613	11	{Special connection between the rotor compartments}	F04D13/06	F04D13/06		310
F04D13/062	11	{pressure compensation between motor- and pump- compartment}	F04D13/06	F04D13/06		93
F04D13/0626	11	{Details of the can}	F04D13/06	F04D13/06		426
F04D13/0633	11	{Details of the bearings}	F04D13/06	F04D13/06		664
F04D13/064	11	{Details of the magnetic circuit}	F04D13/06	F04D13/06		856
F04D13/0646	10	{the hollow pump or motor shaft being the conduit for the working fluid}	F04D13/06	F04D13/06		571
F04D13/0653	10	{the motor being flooded}	F04D13/06	F04D13/06		249
F04D13/066	10	{Floating-units}	F04D13/06	F04D13/06		207
F04D13/0666	10	{the motor being of the plane gap type}	F04D13/06	F04D13/06		330
F04D13/0673	10	{the motor being of the inside-out type}	F04D13/06	F04D13/06		207
F04D13/068	10	{Battery powered}	F04D13/06	F04D13/06		249
F04D13/0686	10	{Mechanical details of the pump control unit (pump control F04D15/00)}	F04D13/06	F04D13/06		493
F04D13/0693	10	{Details or arrangements of the wiring}	F04D13/06	F04D13/06		463
F04D13/08	10	for submerged use	F04D13/08	F04D13/08		2621
F04D13/083	11	{and protected by a gas-bell}	F04D13/08	F04D13/08		167
F04D13/086	11	{the pump and drive motor are both submerged}	F04D13/08	F04D13/08		1505
F04D13/10	11	adapted for use in mining bore holes	F04D13/10	F04D13/10		1882
F04D13/12	8	Combinations of two or more pumps (combinations with priming pumps or booster pumps to counteract vapour-lock F04D9/04)	F04D13/12	F04D13/12		1046
F04D13/14	9	the pumps being all of centrifugal type {(deviation valves F04D15/0016)}	F04D13/14	F04D13/14		808
F04D13/16	8	with storage reservoirs	F04D13/16	F04D13/16		996
F04D15/00	7	Control, e.g. regulation, of pumps, pumping installations or systems	F04D15/00	F04D15/00		2130
F04D15/0005	8	{by using valves}	F04D15/00	F04D15/00		863
F04D15/0011	9	{by-pass valves}	F04D15/00	F04D15/00		359
F04D15/0016	9	{mixing-reversing- or deviation valves}	F04D15/00	F04D15/00		405
F04D15/0022	9	{throttling valves or valves varying the pump inlet opening or the outlet opening}	F04D15/00	F04D15/00		617
F04D15/0027	8	{Varying behaviour or the very pump (F04D15/0055 and F04D29/46 take precedence)}	F04D15/00	F04D15/00		377
F04D15/0033	9	{By-passing by increasing clearance between impeller and its casing}	F04D15/00	F04D15/00		123
F04D15/0038	9	{by varying the effective cross-sectional area of flow through the rotor}	F04D15/00	F04D15/00		366
F04D15/0044	9	{by introducing a gas}	F04D15/00	F04D15/00		56
F04D15/005	9	{the pumps being of the circumferential flow type}	F04D15/00	F04D15/00		80
F04D15/0055	8	{Rotors with adjustable blades}	F04D15/00	F04D15/00		265
F04D15/0061	9	{responsive to temperature}	F04D15/00	F04D15/00		24
F04D15/0066	8	{by changing the speed, e.g. of the driving engine}	F04D15/00	F04D15/00		1807
F04D15/0072	8	{Installation or systems with two or more pumps, wherein the flow path through the stages can be changed, e.g. series-parallel}	F04D15/00	F04D15/00		335
F04D15/0077	8	{Safety measures (F04D15/02 takes precedence)}	F04D15/00	F04D15/00		1003
F04D15/0083	9	{Protection against sudden pressure change, e.g. check valves}	F04D15/00	F04D15/00		218
F04D15/0088	8	{Testing machines}	F04D15/00	F04D15/00		2439
F04D15/0094	8	{Indicators of rotational movement}	F04D15/00	F04D15/00		180
F04D15/02	8	Stopping of pumps, or operating valves, on occurrence of unwanted conditions	F04D15/02	F04D15/02		208
F04D15/0209	9	{responsive to a condition of the working fluid (F04D15/029 takes precedence)}	F04D15/02	F04D15/02		405
F04D15/0218	10	{the condition being a liquid level or a lack of liquid supply}	F04D15/02	F04D15/02		885
F04D15/0227	11	{Lack of liquid level being detected using a flow transducer}	F04D15/02	F04D15/02		89
F04D15/0236	11	{Lack of liquid level being detected by analysing the parameters of the electric drive, e.g. current or power consumption}	F04D15/02	F04D15/02		170
F04D15/0245	9	{responsive to a condition of the pump}	F04D15/02	F04D15/02		196
F04D15/0254	10	{the condition being speed or load}	F04D15/02	F04D15/02		143
F04D15/0263	10	{the condition being temperature, ingress of humidity or leakage}	F04D15/02	F04D15/02		208
F04D15/0272	10	{the condition being wear or a position}	F04D15/02	F04D15/02		65
F04D15/0281	9	{responsive to a condition not otherwise provided for}	F04D15/02	F04D15/02		153
F04D15/029	9	{for pumps operating in parallel}	F04D15/02	F04D15/02		304
F04D17/00	7	Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (F04D21/00 takes precedence)	F04D17/00	F04D17/00		161
F04D17/02	8	having non-centrifugal stages, e.g. centripetal	F04D17/02	F04D17/02		159
F04D17/025	9	{comprising axial flow and radial flow stages}	F04D17/02	F04D17/02		232
F04D17/04	9	of transverse-flow type	F04D17/04	F04D17/04		1344
F04D17/06	8	Helico-centrifugal pumps	F04D17/06	F04D17/06		324
F04D17/08	8	Centrifugal pumps	F04D17/08	F04D17/08		681
F04D17/10	9	for compressing or evacuating	F04D17/10	F04D17/10		2303
F04D17/105	10	{with double suction}	F04D17/10	F04D17/10		157
F04D17/12	10	Multi-stage pumps	F04D17/12	F04D17/12		1139
F04D17/122	11	{the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors}	F04D17/12	F04D17/12		1066
F04D17/125	12	{the casing being vertically split}	F04D17/12	F04D17/12		150
F04D17/127	11	{with radially spaced stages, e.g. for contrarotating type}	F04D17/12	F04D17/12		121
F04D17/14	11	with means for changing the flow-path through the stages, e.g. series-parallel, e.g. side-loads, (surge control F04D27/02)	F04D17/14	F04D17/14		177
F04D17/16	9	for displacing without appreciable compression	F04D17/16	F04D17/16		1896
F04D17/161	10	{Shear force pumps}	F04D17/16	F04D17/16		189
F04D17/162	10	{Double suction pumps}	F04D17/16	F04D17/16		344
F04D17/164	10	{Multi-stage fans, e.g. for vacuum cleaners}	F04D17/16	F04D17/16		252
F04D17/165	10	{Axial entry and discharge}	F04D17/16	F04D17/16		302
F04D17/167	10	{Operating by means of fibrous or porous elements (suction filters F04D29/701), e.g. with sponge rotors}	F04D17/16	F04D17/16		85
F04D17/168	10	{Pumps specially adapted to produce a vacuum}	F04D17/16	F04D17/16		653
F04D17/18	9	characterised by use of centrifugal force of liquids entrained in pumps {(, e.g. by means of an auxiliary liquid; fluid ring compressors F04C19/00)}	F04D17/18	F04D17/18		324
F04D19/00	7	Axial-flow pumps (F04D21/00 takes precedence; {pump comprising axial flow and radial flow stages F04D17/025})	F04D19/00	F04D19/00		392
F04D19/002	8	{Axial flow fans}	F04D19/00	F04D19/00		2947
F04D19/005	9	{reversible fans}	F04D19/00	F04D19/00		202
F04D19/007	8	{multistage fans}	F04D19/00	F04D19/00		549
F04D19/02	8	Multi-stage pumps	F04D19/02	F04D19/02		537
F04D19/022	9	{with concentric rows of vanes;}	F04D19/02	F04D19/02		184
F04D19/024	9	{with contrarotating parts}	F04D19/02	F04D19/02		310
F04D19/026	9	{with a plurality of shafts rotating at different speeds (F04D19/022 takes precedence)}	F04D19/02	F04D19/02		145
F04D19/028	9	{Layout of fluid flow through the stages}	F04D19/02	F04D19/02		194
F04D19/04	9	specially adapted to the production of a high vacuum, e.g. molecular pumps	F04D19/04	F04D19/04		1235
F04D19/042	10	{Turbomolecular vacuum pumps}	F04D19/04	F04D19/04		1428
F04D19/044	10	{Holweck-type pumps}	F04D19/04	F04D19/04		334
F04D19/046	10	{Combinations of two or more different types of pumps}	F04D19/04	F04D19/04		328
F04D19/048	10	{comprising magnetic bearings}	F04D19/04	F04D19/04		327
F04D21/00	7	Pump involving supersonic speed of pumped fluids	F04D21/00	F04D21/00		350
F04D23/00	7	Other rotary non-positive-displacement pumps (pumping installations or systems F04D25/00)	F04D23/00	F04D23/00		159
F04D23/001	8	{Pumps adapted for conveying materials or for handling specific elastic fluids}	F04D23/00	F04D23/00		70
F04D23/003	9	{of radial-flow type}	F04D23/00	F04D23/00		295
F04D23/005	9	{of axial-flow type}	F04D23/00	F04D23/00		33
F04D23/006	8	{Creating a pulsating flow}	F04D23/00	F04D23/00		27
F04D23/008	8	{Regenerative pumps (for liquids or for liquids and elastic fluids F04D5/002)}	F04D23/00	F04D23/00		831
F04D25/00	7	Pumping installations or systems (controlling F04D27/00)	F04D25/00	F04D25/00		187
F04D25/02	8	Units comprising pumps and their driving means	F04D25/02	F04D25/02		1140
F04D25/022	9	{comprising a yielding coupling, e.g. hydraulic (a magnetic coupling F04D25/026)}	F04D25/02	F04D25/02		233
F04D25/024	9	{the driving means being assisted by a power recovery turbine}	F04D25/02	F04D25/02		635
F04D25/026	9	{with a magnetic coupling}	F04D25/02	F04D25/02		269
F04D25/028	9	{the driving means being a planetary gear}	F04D25/02	F04D25/02		251
F04D25/04	9	the pump being fluid-driven {(pumps driven by exhaust gases F02B37/00, F02B39/00; turbochargers F02C6/12)}	F04D25/04	F04D25/04		1210
F04D25/045	10	{the pump wheel carrying the fluid driving means, e.g. turbine blades}	F04D25/04	F04D25/04		518
F04D25/06	9	the pump being electrically driven (F04D25/08 takes precedence)	F04D25/06	F04D25/06		4392
F04D25/0606	10	{the electric motor being specially adapted for integration in the pump}	F04D25/06	F04D25/06		2256
F04D25/0613	11	{the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator}	F04D25/06	F04D25/06		1678
F04D25/062	12	{Details of the bearings}	F04D25/06	F04D25/06		475
F04D25/0626	12	{Details of the lubrication}	F04D25/06	F04D25/06		104
F04D25/0633	12	{Details of the magnetic circuit}	F04D25/06	F04D25/06		196
F04D25/064	12	{Details of the rotor}	F04D25/06	F04D25/06		298
F04D25/0646	12	{Details of the stator}	F04D25/06	F04D25/06		372
F04D25/0653	11	{the motor having a plane air gap, e.g. disc-type}	F04D25/06	F04D25/06		237
F04D25/066	11	{Linear Motors}	F04D25/06	F04D25/06		228
F04D25/0666	11	{a sensor is integrated into the pump/motor design}	F04D25/06	F04D25/06		96
F04D25/0673	10	{Battery powered}	F04D25/06	F04D25/06		710
F04D25/068	10	{Mechanical details of the pump control unit (pump control details F04D27/00)}	F04D25/06	F04D25/06		489
F04D25/0686	10	{specially adapted for submerged use}	F04D25/06	F04D25/06		210
F04D25/0693	10	{Details or arrangements of the wiring}	F04D25/06	F04D25/06		707
F04D25/08	9	the working fluid being air, e.g. for ventilation	F04D25/08	F04D25/08		15377
F04D25/082	10	{the unit having provision for cooling the motor}	F04D25/08	F04D25/08		1624
F04D25/084	10	{hand fans}	F04D25/08	F04D25/08		1287
F04D25/086	11	{hand operated}	F04D25/08	F04D25/08		241
F04D25/088	10	{Ceiling fans}	F04D25/08	F04D25/08		2270
F04D25/10	10	the unit having provisions for automatically changing direction of output air	F04D25/10	F04D25/10		983
F04D25/105	11	{by changing rotor axis direction, e.g. oscillating fans (interconnecting rotary motion and oscillating motion F16H)}	F04D25/10	F04D25/10		1563
F04D25/12	10	the unit being adapted for mounting in apertures	F04D25/12	F04D25/12		519
F04D25/14	11	and having shutters, e.g. automatically closed when not in use	F04D25/14	F04D25/14		562
F04D25/16	8	Combinations of two or more pumps {; Producing two or more separate gas flows}	F04D25/16	F04D25/16		978
F04D25/163	9	{driven by a common gearing arrangement}	F04D25/16	F04D25/16		654
F04D25/166	9	{using fans}	F04D25/16	F04D25/16		3028
F04D27/00	7	Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids	F04D27/00	F04D27/00		4380
F04D27/001	8	{Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring}	F04D27/00	F04D27/00		4847
F04D27/002	8	{by varying geometry within the pumps, e.g. by adjusting vanes}	F04D27/00	F04D27/00		1373
F04D27/003	8	{by throttling (F04D27/002 takes precedence)}	F04D27/00	F04D27/00		373
F04D27/004	8	{by varying driving speed}	F04D27/00	F04D27/00		4642
F04D27/005	8	{by changing flow path between different stages or between a plurality of compressors; Load distribution between compressors}	F04D27/00	F04D27/00		182
F04D27/006	8	{by influencing fluid temperatures}	F04D27/00	F04D27/00		331
F04D27/007	8	{Conjoint control of two or more different functions}	F04D27/00	F04D27/00		597
F04D27/008	8	{Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves}	F04D27/00	F04D27/00		2506
F04D27/009	8	{by bleeding, by passing or recycling fluid}	F04D27/00	F04D27/00		424
F04D27/02	8	Surge control {(surge detection F04D27/001)}	F04D27/02	F04D27/02		809
F04D27/0207	9	{by bleeding, bypassing or recycling fluids (influencing the boundary layer by an uncontrolled bleeding of the working fluid F04D29/681)}	F04D27/02	F04D27/02		628
F04D27/0215	10	{Arrangements therefor, e.g. bleed or by-pass valves}	F04D27/02	F04D27/02		1090
F04D27/0223	10	{Control schemes therefor}	F04D27/02	F04D27/02		294
F04D27/023	10	{Details or means for fluid extraction}	F04D27/02	F04D27/02		556
F04D27/0238	10	{Details or means for fluid reinjection}	F04D27/02	F04D27/02		236
F04D27/0246	9	{by varying geometry within the pumps, e.g. by adjusting vanes}	F04D27/02	F04D27/02		823
F04D27/0253	9	{by throttling (F04D27/0246 takes precedence)}	F04D27/02	F04D27/02		405
F04D27/0261	9	{by varying driving speed}	F04D27/02	F04D27/02		657
F04D27/0269	9	{by changing flow path between different stages or between a plurality of compressors; load distribution between compressors}	F04D27/02	F04D27/02		254
F04D27/0276	9	{by influencing fluid temperature}	F04D27/02	F04D27/02		54
F04D27/0284	9	{Conjoint control of two or more different functions}	F04D27/02	F04D27/02		259
F04D27/0292	9	{Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves}	F04D27/02	F04D27/02		489
F04D29/00	7	Details, component parts, or accessories (machine elements in general F16)	F04D29/00	F04D29/00		699
F04D29/002	8	{especially adapted for elastic fluid pumps}	F04D29/00	F04D29/00		4411
F04D29/005	8	{Decorative aspects, i.e. features which have no effect on the functioning of the pump}	F04D29/00	F04D29/00		488
F04D29/007	8	{especially adapted for liquid pumps}	F04D29/00	F04D29/00		2834
F04D29/02	8	Selection of particular materials (for handling specific liquids F04D7/00{F04D23/001})	F04D29/02	F04D29/02		246
F04D29/023	9	{especially adapted for elastic fluid pumps}	F04D29/02	F04D29/02		3637
F04D29/026	9	{especially adapted for liquid pumps}	F04D29/02	F04D29/02		2200
F04D29/04	8	Shafts or bearings, or assemblies thereof (specially adapted for elastic fluid pumps F04D29/05)	F04D29/04	F04D29/04		564
F04D29/0405	9	{joining shafts, e.g. rigid couplings, quill shafts}<br><br><u>WARNING</u><br>The group F04D29/0405 is no longer used for the classification of new documents as from July 1st, 2007. The backlog of this group is being continuously reclassified to F04D29/044 and F04D29/054	F04D29/04	F04D29/04		30
F04D29/041	9	Axial thrust balancing	F04D29/041	F04D29/041		547
F04D29/0413	10	{hydrostatic; hydrodynamic thrust bearings}	F04D29/041	F04D29/041		624
F04D29/0416	10	{balancing pistons}	F04D29/041	F04D29/041		441
F04D29/042	9	Axially shiftable rotors (F04D29/041 takes precedence {; control by creating a by-pass F04D15/0027})	F04D29/042	F04D29/042		285
F04D29/043	9	Shafts	F04D29/043	F04D29/043		1315
F04D29/044	10	Arrangements for joining or assembling shafts	F04D29/044	F04D29/044		971
F04D29/046	9	Bearings	F04D29/046	F04D29/046		1572
F04D29/0462	10	{Bearing cartridges}	F04D29/046	F04D29/046		312
F04D29/0465	10	{Ceramic bearing designs}	F04D29/046	F04D29/046		239
F04D29/0467	10	{Spherical bearings}	F04D29/046	F04D29/046		254
F04D29/047	10	hydrostatic; hydrodynamic	F04D29/047	F04D29/047		810
F04D29/0473	11	{for radial pumps}	F04D29/047	F04D29/047		247
F04D29/0476	11	{for axial pumps}	F04D29/047	F04D29/047		38
F04D29/048	10	magnetic; electromagnetic	F04D29/048	F04D29/048		438
F04D29/049	10	Roller bearings	F04D29/049	F04D29/049		539
F04D29/05	8	Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps	F04D29/05	F04D29/05		290
F04D29/051	9	Axial thrust balancing	F04D29/051	F04D29/051		594
F04D29/0513	10	{hydrostatic; hydrodynamic thrust bearings}	F04D29/051	F04D29/051		598
F04D29/0516	10	{balancing pistons}	F04D29/051	F04D29/051		213
F04D29/052	9	Axially shiftable rotors (F04D29/051 takes precedence {; control by creating a by-pass F04D27/0246})	F04D29/052	F04D29/052		122
F04D29/053	9	Shafts	F04D29/053	F04D29/053		1221
F04D29/054	10	Arrangements for joining or assembling shafts	F04D29/054	F04D29/054		539
F04D29/056	9	Bearings	F04D29/056	F04D29/056		1813
F04D29/0563	10	{Bearings cartridges}	F04D29/056	F04D29/056		336
F04D29/0566	10	{Ceramic bearing designs}	F04D29/056	F04D29/056		59
F04D29/057	10	hydrostatic; hydrodynamic	F04D29/057	F04D29/057		1074
F04D29/058	10	magnetic; electromagnetic	F04D29/058	F04D29/058		892
F04D29/059	10	Roller bearings	F04D29/059	F04D29/059		860
F04D29/06	8	Lubrication {(F04D13/0606, F04D13/0646, F04D13/0653 take precedence)}	F04D29/06	F04D29/06		140
F04D29/061	9	{especially adapted for liquid pumps}	F04D29/06	F04D29/06		1276
F04D29/063	9	specially adapted for elastic fluid pumps	F04D29/063	F04D29/063		1386
F04D29/08	8	Sealings	F04D29/08	F04D29/08		303
F04D29/083	9	{especially adapted for elastic fluid pumps}	F04D29/08	F04D29/08		1895
F04D29/086	9	{especially adapted for liquid pumps}	F04D29/08	F04D29/08		2219
F04D29/10	9	Shaft sealings	F04D29/10	F04D29/10		247
F04D29/102	10	{especially adapted for elastic fluid pumps}	F04D29/10	F04D29/10		818
F04D29/104	11	{the sealing fluid being other than the working fluid or being the working fluid treated}	F04D29/10	F04D29/10		269
F04D29/106	10	{especially adapted for liquid pumps}	F04D29/10	F04D29/10		1688
F04D29/108	11	{the sealing fluid being other than the working liquid or being the working liquid treated}	F04D29/10	F04D29/10		432
F04D29/12	10	using sealing-rings	F04D29/12	F04D29/12		220
F04D29/122	11	{especially adapted for elastic fluid pumps}	F04D29/12	F04D29/12		440
F04D29/124	12	{with special means for adducting cooling or sealing fluid}	F04D29/12	F04D29/12		162
F04D29/126	11	{especially adapted for liquid pumps}	F04D29/12	F04D29/12		1641
F04D29/128	12	{with special means for adducting cooling or sealing fluid}	F04D29/12	F04D29/12		421
F04D29/14	10	operative only when pump is inoperative	F04D29/14	F04D29/14		16
F04D29/143	11	{especially adapted for elastic fluid pumps}	F04D29/14	F04D29/14		68
F04D29/146	11	{especially adapted for liquid pumps}	F04D29/14	F04D29/14		224
F04D29/16	9	between pressure and suction sides	F04D29/16	F04D29/16		78
F04D29/161	10	{especially adapted for elastic fluid pumps}	F04D29/16	F04D29/16		173
F04D29/162	11	{of a centrifugal flow wheel}	F04D29/16	F04D29/16		651
F04D29/164	11	{of an axial flow wheel}	F04D29/16	F04D29/16		672
F04D29/165	10	{especially adapted for liquid pumps}	F04D29/16	F04D29/16		79
F04D29/167	11	{of a centrifugal flow wheel}	F04D29/16	F04D29/16		948
F04D29/168	11	{of an axial flow wheel}	F04D29/16	F04D29/16		26
F04D29/18	8	Rotors (specially for elastic fluids F04D29/26)	F04D29/18	F04D29/18		627
F04D29/181	9	{Axial flow rotors (F04D29/185 take precedence)}	F04D29/18	F04D29/18		893
F04D29/183	10	{Semi axial flow rotors}	F04D29/18	F04D29/18		126
F04D29/185	9	{Rotors consisting of a plurality of wheels}	F04D29/18	F04D29/18		346
F04D29/186	9	{Shaftless rotors (F04D13/024 takes precedence)}	F04D29/18	F04D29/18		122
F04D29/188	9	{specially for regenerative pumps}	F04D29/18	F04D29/18		304
F04D29/20	9	Mounting rotors on shafts	F04D29/20	F04D29/20		1118
F04D29/22	9	specially for centrifugal pumps	F04D29/22	F04D29/22		1008
F04D29/2205	10	{Conventional flow pattern (F04D29/18 takes precedence)}	F04D29/22	F04D29/22		159
F04D29/2211	11	{More than one set of flow passages}	F04D29/22	F04D29/22		213
F04D29/2216	11	{Shape, geometry (F04D29/2211 takes precedence)}	F04D29/22	F04D29/22		581
F04D29/2222	11	{Construction and assembly (F04D29/2211 takes precedence)}	F04D29/22	F04D29/22		1508
F04D29/2227	12	{for special materials}	F04D29/22	F04D29/22		356
F04D29/2233	12	{entirely open or stamped from one sheet}	F04D29/22	F04D29/22		127
F04D29/2238	10	{Special flow patterns (F04D11/005 takes precedence)}	F04D29/22	F04D29/22		192
F04D29/2244	11	{Free vortex}	F04D29/22	F04D29/22		175
F04D29/225	11	{Channel wheels, e.g. one blade or one flow channel}	F04D29/22	F04D29/22		444
F04D29/2255	11	{flow-channels with a special cross-section contour, e.g. ejecting, throttling or diffusing effect}	F04D29/22	F04D29/22		311
F04D29/2261	10	{with special measures}	F04D29/22	F04D29/22		305
F04D29/2266	11	{for sealing or thrust balance (F04D29/04 and F04D29/16 take precedence)}	F04D29/22	F04D29/22		709
F04D29/2272	11	{for influencing flow or boundary layer}	F04D29/22	F04D29/22		265
F04D29/2277	11	{for increasing NPSH or dealing with liquids near boiling-point}	F04D29/22	F04D29/22		411
F04D29/2283	11	{for reverse pumping action}	F04D29/22	F04D29/22		85
F04D29/2288	11	{for comminuting, mixing or separating}	F04D29/22	F04D29/22		627
F04D29/2294	11	{for protection, e.g. against abrasion}	F04D29/22	F04D29/22		318
F04D29/24	10	Vanes	F04D29/24	F04D29/24		728
F04D29/242	11	{Geometry, shape}	F04D29/24	F04D29/24		1109
F04D29/245	12	{for special effects}	F04D29/24	F04D29/24		409
F04D29/247	11	{elastic or self-adjusting}	F04D29/24	F04D29/24		239
F04D29/26	8	Rotors specially for elastic fluids	F04D29/26	F04D29/26		917
F04D29/263	9	{mounting fan or blower rotors on shafts}	F04D29/26	F04D29/26		1046
F04D29/266	9	{mounting compressor rotors on shafts}	F04D29/26	F04D29/26		605
F04D29/28	9	for centrifugal or helico-centrifugal pumps {for radial-flow or helico-centrifugal pumps}	F04D29/28	F04D29/28		751
F04D29/281	10	{for fans or blowers}	F04D29/28	F04D29/28		4039
F04D29/282	11	{the leading edge of each vane being substantially parallel to the rotation axis}	F04D29/28	F04D29/28		1220
F04D29/283	12	{rotors of the squirrel-cage type}	F04D29/28	F04D29/28		1022
F04D29/284	10	{for compressors}	F04D29/28	F04D29/28		2321
F04D29/285	11	{the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together}	F04D29/28	F04D29/28		226
F04D29/286	11	{multi-stage rotors}	F04D29/28	F04D29/28		433
F04D29/287	10	{with adjusting means}	F04D29/28	F04D29/28		238
F04D29/288	10	{Part of the wheel having an ejecting effect, e.g. being bladeless diffuser}	F04D29/28	F04D29/28		132
F04D29/289	10	{having provision against erosion or for dust-separation}	F04D29/28	F04D29/28		203
F04D29/30	10	Vanes	F04D29/30	F04D29/30		4311
F04D29/305	11	{Flexible vanes}	F04D29/30	F04D29/30		84
F04D29/32	9	for axial flow pumps	F04D29/32	F04D29/32		332
F04D29/321	10	{for axial flow compressors}	F04D29/32	F04D29/32		978
F04D29/322	11	{Blade mountings}	F04D29/32	F04D29/32		459
F04D29/323	12	{adjustable}	F04D29/32	F04D29/32		286
F04D29/324	11	{Blades}	F04D29/32	F04D29/32		1906
F04D29/325	10	{for axial flow fans (blade mountings F04D29/34, blades F04D29/38)}	F04D29/32	F04D29/32		2230
F04D29/326	11	{comprising a rotating shroud}	F04D29/32	F04D29/32		560
F04D29/327	11	{with non identical blades}	F04D29/32	F04D29/32		206
F04D29/328	11	{with unequal distribution of blades around the hub}	F04D29/32	F04D29/32		87
F04D29/329	11	{Details of the hub}	F04D29/32	F04D29/32		1192
F04D29/34	10	Blade mountings {(for axial flow compressors F04D29/322)}	F04D29/34	F04D29/34		1314
F04D29/36	11	adjustable {(flexible blades F04D29/382)}	F04D29/36	F04D29/36		670
F04D29/362	12	{during rotation}	F04D29/36	F04D29/36		707
F04D29/364	13	{The blades having only a predetermined number of possible positions}	F04D29/36	F04D29/36		106
F04D29/366	13	{Adjustment by interaction of inertion and lift}	F04D29/36	F04D29/36		105
F04D29/368	13	{Adjustment by differences of temperature}	F04D29/36	F04D29/36		71
F04D29/38	10	Blades {(for axial flow compressors F04D29/324)}	F04D29/38	F04D29/38		1088
F04D29/382	11	{Flexible blades}	F04D29/38	F04D29/38		326
F04D29/384	11	{characterised by form}	F04D29/38	F04D29/38		2365
F04D29/386	12	{Skewed blades}	F04D29/38	F04D29/38		643
F04D29/388	11	{characterised by construction}	F04D29/38	F04D29/38		2323
F04D29/40	8	Casings; Connections of working fluid {(bleed or by-pass valves F04D15/0011, F04D27/0215)}	F04D29/40	F04D29/40		580
F04D29/403	9	{especially adapted for elastic fluid pumps}	F04D29/40	F04D29/40		2436
F04D29/406	9	{especially adapted for liquid pumps}	F04D29/40	F04D29/40		1716
F04D29/42	9	for radial or helico-centrifugal pumps	F04D29/42	F04D29/42		666
F04D29/4206	10	{especially adapted for elastic fluid pumps}	F04D29/42	F04D29/42		2648
F04D29/4213	11	{suction ports}	F04D29/42	F04D29/42		2084
F04D29/422	11	{Discharge tongues (F04D17/04 takes precedence)}	F04D29/42	F04D29/42		834
F04D29/4226	11	{Fan casings}	F04D29/42	F04D29/42		3801
F04D29/4233	12	{with volutes extending mainly in axial or radially inward direction}	F04D29/42	F04D29/42		634
F04D29/424	12	{Double entry casings}	F04D29/42	F04D29/42		482
F04D29/4246	12	{comprising more than one outlet}	F04D29/42	F04D29/42		547
F04D29/4253	12	{with axial entry and discharge}	F04D29/42	F04D29/42		271
F04D29/426	10	{especially adapted for liquid pumps}	F04D29/42	F04D29/42		4646
F04D29/4266	11	{made of sheet metal}	F04D29/42	F04D29/42		256
F04D29/4273	11	{suction eyes}	F04D29/42	F04D29/42		593
F04D29/428	11	{Discharge tongues (F04D17/04 takes precedence)}	F04D29/42	F04D29/42		209
F04D29/4286	11	{inside lining, e.g. rubber}	F04D29/42	F04D29/42		493
F04D29/4293	11	{Details of fluid inlet or outlet}	F04D29/42	F04D29/42		1650
F04D29/44	10	Fluid-guiding means, e.g. diffusers	F04D29/44	F04D29/44		817
F04D29/441	11	{especially adapted for elastic fluid pumps}	F04D29/44	F04D29/44		3826
F04D29/442	12	{rotating diffusers}	F04D29/44	F04D29/44		161
F04D29/444	12	{Bladed diffusers}	F04D29/44	F04D29/44		1932
F04D29/445	11	{especially adapted for liquid pumps}	F04D29/44	F04D29/44		1778
F04D29/447	12	{rotating diffusers}	F04D29/44	F04D29/44		44
F04D29/448	12	{bladed diffusers}	F04D29/44	F04D29/44		619
F04D29/46	11	adjustable	F04D29/46	F04D29/46		127
F04D29/462	12	{especially adapted for elastic fluid pumps}	F04D29/46	F04D29/46		1421
F04D29/464	13	{adjusting flow cross-section, otherwise than by using adjustable stator blades}	F04D29/46	F04D29/46		712
F04D29/466	12	{especially adapted for liquid fluid pumps}	F04D29/46	F04D29/46		208
F04D29/468	13	{adjusting flow cross-section, otherwise than by using adjustable stator blades}	F04D29/46	F04D29/46		61
F04D29/48	12	for unidirectional fluid flow in reversible pumps {(rotors for reverse action F04D29/2283)}	F04D29/48	F04D29/48		8
F04D29/483	13	{especially adapted for elastic fluid pumps}	F04D29/48	F04D29/48		44
F04D29/486	13	{especially adapted for liquid pumps}	F04D29/48	F04D29/48		151
F04D29/50	12	for reversing fluid flow {(rotors for reverse action F04D29/2283)}	F04D29/50	F04D29/50		10
F04D29/503	13	{especially adapted for elastic fluid pumps}	F04D29/50	F04D29/50		174
F04D29/506	13	{especially adapted for liquid pumps}	F04D29/50	F04D29/50		103
F04D29/52	9	for axial pumps	F04D29/52	F04D29/52		198
F04D29/522	10	{especially adapted for elastic fluid pumps}	F04D29/52	F04D29/52		2909
F04D29/524	11	{shiftable members for obturating part of the flow path}	F04D29/52	F04D29/52		135
F04D29/526	11	{Details of the casing section radially opposing blade tips (ducts F04D29/545)}	F04D29/52	F04D29/52		1176
F04D29/528	10	{especially adapted for liquid pumps}	F04D29/52	F04D29/52		464
F04D29/54	10	Fluid-guiding means, e.g. diffusers	F04D29/54	F04D29/54		373
F04D29/541	11	{Specially adapted for elastic fluid pumps (F04D29/56 takes precedence)}	F04D29/54	F04D29/54		1491
F04D29/542	12	{Bladed diffusers (fixing blades to stators F01D9/042)}	F04D29/54	F04D29/54		1783
F04D29/544	13	{Blade shapes}	F04D29/54	F04D29/54		1051
F04D29/545	12	{Ducts}	F04D29/54	F04D29/54		1046
F04D29/547	13	{having a special shape in order to influence fluid flow}	F04D29/54	F04D29/54		567
F04D29/548	11	{Specially adapted for liquid pumps (F04D29/56 takes precedence)}	F04D29/54	F04D29/54		402
F04D29/56	11	adjustable	F04D29/56	F04D29/56		85
F04D29/563	12	{specially adapted for elastic fluid pumps}	F04D29/56	F04D29/56		1560
F04D29/566	12	{specially adapted for liquid pumps}	F04D29/56	F04D29/56		69
F04D29/58	8	Cooling (of machines or engines in general F01P); Heating; Diminishing heat transfer {(for the motor of air-pump units F04D25/082; cooling of shafts or bearings F04D29/04)}	F04D29/58	F04D29/58		574
F04D29/5806	9	{Cooling the drive system}	F04D29/58	F04D29/58		4066
F04D29/5813	9	{Cooling the control unit}	F04D29/58	F04D29/58		794
F04D29/582	9	{specially adapted for elastic fluid pumps}	F04D29/58	F04D29/58		2475
F04D29/5826	10	{Cooling at least part of the working fluid in a heat exchanger}	F04D29/58	F04D29/58		819
F04D29/5833	11	{flow schemes and regulation thereto}	F04D29/58	F04D29/58		234
F04D29/584	10	{cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence)}	F04D29/58	F04D29/58		2006
F04D29/5846	10	{cooling by injection}	F04D29/58	F04D29/58		547
F04D29/5853	10	{heat insulation or conduction}	F04D29/58	F04D29/58		714
F04D29/586	9	{specially adapted for liquid pumps}	F04D29/58	F04D29/58		1286
F04D29/5866	10	{Cooling at last part of the working fluid in a heat exchanger}	F04D29/58	F04D29/58		185
F04D29/5873	11	{flow schemes and regulation thereto}	F04D29/58	F04D29/58		50
F04D29/588	10	{cooling or heating the machine (F04D29/5886, F04D29/5893 take precedence)}	F04D29/58	F04D29/58		1286
F04D29/5886	10	{cooling by injection}	F04D29/58	F04D29/58		311
F04D29/5893	10	{heat insulation or conduction}	F04D29/58	F04D29/58		509
F04D29/60	8	Mounting; Assembling; Disassembling {(F04D13/10 takes precedence)}	F04D29/60	F04D29/60		402
F04D29/601	9	{specially adapted for elastic fluid pumps}	F04D29/60	F04D29/60		3207
F04D29/602	10	{Mounting in cavities}	F04D29/60	F04D29/60		212
F04D29/603	11	{means for positioning from outside}	F04D29/60	F04D29/60		19
F04D29/604	11	{means for removing without depressurising the cavity}	F04D29/60	F04D29/60		11
F04D29/605	9	{specially adapted for liquid pumps}	F04D29/60	F04D29/60		1621
F04D29/606	10	{Mounting in cavities}	F04D29/60	F04D29/60		450
F04D29/607	11	{means for positioning from outside}	F04D29/60	F04D29/60		239
F04D29/608	11	{means for removing without depressurizing the cavity}	F04D29/60	F04D29/60		81
F04D29/62	9	of radial or helico-centrifugal pumps	F04D29/62	F04D29/62		243
F04D29/622	10	{Adjusting the clearances between rotary and stationary parts}	F04D29/62	F04D29/62		301
F04D29/624	10	{especially adapted for elastic fluid pumps}	F04D29/62	F04D29/62		1461
F04D29/626	11	{Mounting or removal of fans}	F04D29/62	F04D29/62		2099
F04D29/628	10	{especially adapted for liquid pumps}	F04D29/62	F04D29/62		3578
F04D29/64	9	of axial pumps	F04D29/64	F04D29/64		214
F04D29/642	10	{by adjusting the clearances between rotary and stationary parts}	F04D29/64	F04D29/64		44
F04D29/644	10	{especially adapted for elastic fluid pumps}	F04D29/64	F04D29/64		1308
F04D29/646	11	{Mounting or removal of fans}	F04D29/64	F04D29/64		3200
F04D29/648	10	{especially adapted for liquid pumps}	F04D29/64	F04D29/64		329
F04D29/66	8	Combating cavitation, whirls, noise, vibration or the like (gas-flow silencers for machines or engines in general F01N); Balancing (surge control F04D27/02)	F04D29/66	F04D29/66		897
F04D29/661	9	{especially adapted for elastic fluid pumps}	F04D29/66	F04D29/66		1075
F04D29/662	10	{Balancing of rotors (compensating imbalance G01M1/36)}	F04D29/66	F04D29/66		784
F04D29/663	10	{Sound attenuation}	F04D29/66	F04D29/66		3034
F04D29/664	11	{by means of sound absorbing material}	F04D29/66	F04D29/66		1506
F04D29/665	11	{by means of resonance chambers or interference}	F04D29/66	F04D29/66		768
F04D29/666	10	{by means of rotor construction or layout, e.g. unequal distribution of blades or vanes}	F04D29/66	F04D29/66		2510
F04D29/667	10	{by influencing the flow pattern, e.g. suppression of turbulence}	F04D29/66	F04D29/66		2838
F04D29/668	10	{damping or preventing mechanical vibrations}	F04D29/66	F04D29/66		3357
F04D29/669	9	{especially adapted for liquid pumps (F04D29/18 takes precedence)}	F04D29/66	F04D29/66		3664
F04D29/68	9	by influencing boundary layers {(by bleeding elastic fluid F04D27/0215)}	F04D29/68	F04D29/68		61
F04D29/681	10	{especially adapted for elastic fluid pumps}	F04D29/68	F04D29/68		940
F04D29/682	11	{by fluid extraction}	F04D29/68	F04D29/68		404
F04D29/684	11	{by fluid injection}	F04D29/68	F04D29/68		498
F04D29/685	11	{Inducing localised fluid recirculation in the stator-rotor interface}	F04D29/68	F04D29/68		572
F04D29/687	11	{Plasma actuators therefore}	F04D29/68	F04D29/68		35
F04D29/688	10	{especially adapted for liquid pumps}	F04D29/68	F04D29/68		163
F04D29/70	8	Suction grids; Strainers; Dust separation; Cleaning	F04D29/70	F04D29/70		459
F04D29/701	9	{especially adapted for elastic fluid pumps}	F04D29/70	F04D29/70		1320
F04D29/703	10	{specially for fans, e.g. fan guards}	F04D29/70	F04D29/70		5000
F04D29/705	10	{Adding liquids}	F04D29/70	F04D29/70		715
F04D29/706	10	{Humidity separation}	F04D29/70	F04D29/70		329
F04D29/708	9	{specially for liquid pumps}	F04D29/70	F04D29/70		3713
F04D31/00	7	Pumping liquids and elastic fluids at the same time	F04D31/00	F04D31/00		579
F04D33/00	7	Non-positive-displacement pumps with other than pure rotation, e.g. of oscillating type (F04D35/00 takes precedence; hand-held fans A45B)	F04D33/00	F04D33/00		643
F04D35/00	7	Pumps producing waves in liquids, i.e. wave-producers (for bath tubs A47K3/10)	F04D35/00	F04D35/00		147
