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| and Services |
DF | CLASS NOTES | |
1 | DF | METHOD OF OPERATION |
2.1 | DF | WITH MEANS FOR CONTROLLING CASING OR FLOW GUIDING MEANS IN RESPONSE TO NATURAL FLUID CURRENT FORCE OR DIRECTION |
3.1 | DF | .~ Having specific features for water current |
4.1 | DF | .~ Natural fluid current force responsive |
4.2 | DF | .~.~ Vertical runner axis |
4.3 | DF | .~.~ Axial flow runner |
4.4 | DF | .~ Vertical runner axis |
4.5 | DF | .~ Axial flow runner |
5 | DF | ENDLESS FLEXIBLE RUNNER (E.G., CHAIN, ETC.) |
6 | DF | CYCLICALLY DIPPING, LIQUID RETAINING, ELEVATING AND DISCHARGING RECEPTACLE OR CONDUIT |
7 | DF | FLOAT SUPPORTED OR BUOYANT RUNNER |
8 | DF | DRIVEN, FLUID IMMERSED RUNNER WITH VANE IN UNCONFINED FLUID STREAM (E.G., TROLLING PLATE, ETC.) |
9 | DF | INCLUDING DESTRUCTIBLE, FUSIBLE, OR DEFORMABLE NON-REUSABLE PART |
10 | DF | WITH CONTROL MEANS RESPONSIVE TO MOTION DEVELOPED FLUID EDDY, ELECTRICAL, OR MAGNETIC EFFECT |
11 | DF | WITH PUMP RECIRCULATION PASSAGE CONTROL RESPONSIVE TO WORKING FLUID CONDITION OR CHARACTERISTIC |
12 | DF | WITH BIMETALLIC BLADE, VANE, OR ADJUSTMENT MEANS THEREFOR |
13 | DF | WITH CONTROL MEANS RESPONSIVE TO NON-CYCLIC CONDITION SENSING, CENTRIFUGAL ACTUATION OR TORQUE |
14 | DF | .~ Casing, runner, or shaft position or extent of motion responsive |
15 | DF | .~ With input signal of independent condition |
16 | DF | .~ With testing means for speed control |
17 | DF | .~ Plural diverse condition responsive (e.g., temperature and pressure, speed and level, etc.) |
18 | DF | .~ Control of clutch or brake surface |
19 | DF | .~ Including control of starting motor or runner blade starting position |
20 | DF | .~ Control of working fluid and diverse apparatus part |
21 | DF | .~.~ Diverse part is runner portion or connection to shaft |
22 | DF | .~.~.~ Runner bypass from inlet controlled |
23 | DF | .~ Responsive to working fluid discharge angle from blade or vane |
24 | DF | .~ Responsive to liquid level or weight |
25 | DF | .~ Centrifugally initiated valve controlling fluid flow in shaft or runner |
26 | DF | .~ Responsive to moving member developed fluid force, current or pressure |
27 | DF | .~.~ Of relief valve in branched pump discharge line |
28 | DF | .~.~ Of valve bypassing runner stage |
29 | DF | .~.~ Motor and upstream working fluid flow control |
30 | DF | .~ By shaft speed or torque responsive means |
31 | DF | .~.~ Helix or screw runner |
32 | DF | .~.~ Including reset or manual adjustment |
33 | DF | .~.~ Of adjustable runner, blade, shaft or bearing |
34 | DF | .~.~.~ Axially shifted runner, shaft or bearing |
35 | DF | .~.~ Of movable deflector intermediate jet discharge and runner |
36 | DF | .~.~ Of working fluid valve or vane |
37 | DF | .~.~.~ Including valve in interstage or re-entry passage |
38 | DF | .~.~.~ Plural passages with sequential or reverse fluid control |
39 | DF | .~.~.~.~ Inlet and relief or bypass valves |
40 | DF | .~.~.~.~ Fluid motor operated valve |
41 | DF | .~.~.~ With latch means for valve actuator |
42 | DF | .~.~.~ Actuated by runner or separate motor |
43 | DF | .~.~.~.~ Fluid servo-motor and speed responsive means actuated pilot valve |
44 | DF | .~.~.~ Multiple working fluid inlets to runner |
45 | DF | .~.~.~.~ On same radial plane with blade |
46 | DF | .~.~.~ Downstream of runner |
47 | DF | .~ Temperature or fluid force responsive member |
48 | DF | .~.~ For adjustment of runner, shaft, vane or blade |
49 | DF | .~.~ Fluid force responsive member controls working fluid |
50 | DF | .~.~.~ For a plurality of runners |
51 | DF | WITH INDEPENDENTLY OPERATED TIMER OR PROGRAMMER ACTUATOR FOR WORKING FLUID CONTROL |
52.1 | DF | WITH MEANS FOR RE-ENTRY OF WORKING FLUID TO BLADE SET (E.G., RE-ENTRY TYPE DEVICE, PASSAGE, ETC.) |
53.1 | DF | .~ Cross flow runner |
53.2 | DF | .~.~ Having vane or deflector within runner blade set |
53.3 | DF | .~.~ Having selectively adjustable vane or working fluid control means |
54.1 | DF | .~ To opposite face of blade |
55.1 | DF | .~ Turbine regenerative pump |
55.2 | DF | .~.~ Having specific means to deflect working fluid in regenerative passage |
55.3 | DF | .~.~.~ Means extends parallel to passage |
55.4 | DF | .~.~.~ Positioned at passage end (e.g., stripper seal, etc.) |
55.5 | DF | .~.~ Having plural, rigidly related blade sets |
55.6 | DF | .~.~.~ Acting serially but nonalternating (e.g., multistage, etc.) |
55.7 | DF | .~.~.~ In separate regenerative passages |
56.1 | DF | .~ Pump priming means |
56.2 | DF | .~.~ Vertical runner shaft |
56.3 | DF | .~.~ Having plural and arcuately arranged vanes around runner |
56.4 | DF | .~.~ Re-entry through working fluid discharge passage for runner |
56.5 | DF | .~.~ Re-entry working fluid joins inlet working fluid upstream of runner |
56.6 | DF | .~.~ Walled pumping chamber positioned within liquid separation chamber |
57.1 | DF | .~ Plural, independent, serially acting re-entry means |
57.2 | DF | .~.~ Having additional blade set in re-entry path |
57.3 | DF | .~.~ Re-entry from opposite sides of blade face |
57.4 | DF | .~.~ Re-entry into blade in radial plane of blade |
58.1 | DF | .~ Having additional blade set in re-entry path |
58.2 | DF | .~ Radial flow runner portion guides re-entry working fluid (e.g., hub, back plate, etc.) |
58.3 | DF | .~.~ Runner inlet shroud |
58.4 | DF | .~ Re-entry working fluid joins inlet working fluid upstream of runner |
58.5 | DF | .~.~ Axial flow runner |
58.6 | DF | .~ Open recirculation from and to blade set |
58.7 | DF | .~ Axial flow runner |
59.1 | DF | .~ Plural blade sets |
60 | DF | PLURAL RUNNERS SUPPORTED FOR RELATIVE MOTION OR ON SEPARATE SHAFTS |
61 | DF | .~ With means for selective runner operation or drive shaft connection |
62 | DF | .~ Diverse type runners, blade systems or working fluid paths in runners |
63 | DF | .~.~ Including internally passaged runner with reaction type jet discharge nozzle |
64 | DF | .~ Radial flow through concentric radially spaced blade rows |
65 | DF | .~ Interdigitated, oppositely extending, coaxial, axially spaced blade rows |
66 | DF | .~ Serially spaced in working fluid flow path |
67 | DF | .~.~ With initial fluid flow path to each runner |
68 | DF | .~.~ Coaxial runners |
69 | DF | .~.~.~ One runner support surrounds another |
70 | DF | RUNNER HAS PLANETARY MOTION OR ROTATES AROUND OBLIQUE OR CONSTANTLY MOVING AXIS |
71 | DF | RUNNER HAS SPIRALLY ARRANGED BLADE OR FLUID PASSAGE |
72 | DF | .~ Extending along runner axis (i.e., axial flow) |
73 | DF | .~.~ Fluid conducting passage |
74 | DF | .~.~ With additional impingement means in fluid flow path |
75 | DF | .~.~ Motor runner |
76 | DF | FLUID FLOW BETWEEN PLURAL SINUOUS RUNNER SURFACES |
77 | DF | AXIAL FLOW RUNNER WITH BLADES EXTENDING RADIALLY INWARD AND OUTWARD FROM COMMON ANNULUS |
78 | DF | .~ With means selecting only one blade row for working fluid flow |
79 | DF | .~ Serial flow through inward and outward extending blade rows |
80 | DF | MOTOR RUNNER MOTIVATED BY REACTION TYPE JET DISCHARGE NOZZLE FROM INTERNAL WORKING FLUID CONDUIT |
81 | DF | .~ With additional rotary, fluid impinged blades |
82 | DF | .~ With control of runner speed or direction |
83 | DF | RUNNER WITH ANNULAR BLADE ROWS OR FLUID CHANNELS SPACED ON COMMON RADIAL PLANE |
84 | DF | .~ Including peripheral blade row |
85 | DF | .~ With means for reversing runner rotation |
86 | DF | .~ Blades projecting axially from plural transverse runner faces |
87 | DF | .~.~ From opposed faces of common central disc |
88 | DF | PUMP HAVING ROTATING INLET END OR SCOOP IMMERSED IN LIQUID |
89 | DF | CENTRIFUGAL BOWL PUMP |
90 | DF | SMOOTH RUNNER SURFACE FOR WORKING FLUID FRICTIONAL CONTACT (E.G., UNBLADED RUNNER, ETC.) |
91 | DF | ANNULAR RUNNER WITH INWARDLY PROJECTING BLADE |
92 | DF | MOTOR RUNNER HAVING WORKING FLUID TRAPPING POCKET |
93 | DF | AXIALLY OPPOSED WORKING FLUID PATHS TO OR FROM RUNNER (E.G., END BALANCE, ETC.) |
94 | DF | .~ With working fluid regulation or control means |
95 | DF | .~.~ For fluid motor |
96 | DF | .~ With additional shaft connected end balancing fluid force reactor surface |
97 | DF | .~ Pump impeller means |
98 | DF | .~.~ Impeller blades extending from opposite sides of common central support |
99 | DF | .~.~ Plural axially spaced impellers |
100 | DF | .~.~.~ Serially arranged in working fluid path |
101 | DF | .~ Plural, separate, parallel, simultaneous flow paths |
102 | DF | .~.~ Towards each other and common exhaust |
103 | DF | .~.~ Plural, axially spaced blades in each path |
104 | DF | WITH SHAFT CONNECTED FLUID FORCE SUBJECTED THRUST BALANCING SURFACE |
105 | DF | .~ In separate chamber having non-system fluid inlet |
106 | DF | .~ Fluid force on opposite face of blade or blade support member |
107 | DF | .~ Motor shaft |
108 | DF | CASING AND SPACED HOUSING WITH SPACE VENTED TO WORKING FLUID |
109 | DF | WITH SHAFT CONNECTED FLUID ABUTMENT MEMBER IN SEALING FLUID FILLED CHAMBER |
110 | DF | WITH LUBRICATING, SEALING, PACKING OR BEARING MEANS HAVING INTERNAL WORKING FLUID CONNECTION (E.G., FLUID OR FLUID BIASED SEAL, ETC.) |
111 | DF | .~ For shaft sealing, packing, lubricating or bearing means |
112 | DF | .~.~ With inlet and outlet connections |
113 | DF | .~.~ Fluid biased, movable or resilient portion |
114 | DF | WITH CHANGING STATE CONFINED HEAT EXCHANGE MASS |
115 | DF | WITH PASSAGE IN BLADE, VANE, SHAFT OR ROTARY DISTRIBUTOR COMMUNICATING WITH WORKING FLUID |
116 | DF | WITH DIVERSELY ORIENTED INLET OR ADDITIONAL INLET FOR DIVERSE FLUID (E.G., HEATING, COOLING OR MIXED WORKING FLUID, ETC.) |
117 | DF | .~ Diverse fluids to motor |
118 | DF | WITH INSPECTION, SIGNALING, INDICATING OR MEASURING MEANS |
119 | DF | WITH SOUND OR VIBRATORY WAVE ABSORBING OR PREVENTING MEANS OR ARRANGEMENT |
120 | DF | CENTRIPETAL PUMP |
121.1 | DF | WITH CUTTER OR COMMINUTOR FOR DEBRIS IN WORKING FLUID |
121.2 | DF | WITH SEPARATING MEANS OR GUARD FOR SOLID MATTER IN WORKING FLUID (E.G., DEBRIS, ETC.) |
121.3 | DF | COMBINED |
122.1 | DF | INCLUDING SHAFT TRANSMISSION TRAIN, BRAKE, CLUTCH, OR ATTENDANT ACTUATED DRIVE MEANS |
123 | DF | .~ Brake or clutch |
124 | DF | .~ Hand or foot operated crank, pedal or traction wheel |
124.1 | DF | .~ Runner supported portion engages shaft transmission train (e.g., peripheral gear drive, etc.) |
124.2 | DF | .~ Shaft transmission train having flexible means or coupling |
125 | DF | INCLUDING MEANS TO CAUSE CYCLICAL MOVEMENT OF A PART (E.G., BLADE, VALVE, ETC.) |
126 | DF | INCLUDING CASING PART SELECTIVELY MOVABLE RELATIVE TO FIXED SUPPORT |
127 | DF | .~ Circularly around fixed runner axis |
128 | DF | .~ Separate liner portion |
129 | DF | RUNNER OR BLADE SELECTIVELY ADJUSTABLE RELATIVE TO CASING |
130 | DF | .~ Relatively angularly adjustable plural blades or runners |
131 | DF | .~ Axially adjusted |
132 | DF | .~.~ Shaft end supported on movable bearing |
133 | DF | .~ Radially adjusted or centered shaft |
134 | DF | INCLUDING THERMAL EXPANSION JOINT |
135 | DF | .~ Resilient |
136 | DF | .~ Radially sliding |
137 | DF | .~.~ Stator vane in shroud ring opening |
138 | DF | .~.~ And axial or circumferential expansion |
139 | DF | .~ Circumferentially spaced nozzle or stator segments |
140 | DF | RESILIENT OR MOVABLY MOUNTED BLADE PORTION OR AXIALLY MOVABLE RUNNER OR SHAFT |
141 | DF | .~ Yieldingly or pivotedly mounted or flexible blade |
142 | DF | SHAFT BEARING COMBINED WITH OR RETAINED BY ARM OR VANE IN SURROUNDING WORKING FLUID SPACE |
143 | DF | PLURAL RUNNERS HAVING DIFFERENT TYPE FLOW PATHS |
144 | DF | WORKING FLUID BYPASS |
145 | DF | .~ Selectively adjustable vane or working fluid control for bypass |
146 | DF | INCLUDING WORKING FLUID FORCE RESPONSIVE VANE OR FLOW CONTROL |
147 | DF | .~ Upstream of runner |
148 | DF | SELECTIVELY ADJUSTABLE VANE OR WORKING FLUID CONTROL MEANS |
149.1 | DF | .~ Separate means upstream and downstream of blade set |
149.2 | DF | .~.~ Including axial flow blade set |
149.3 | DF | .~.~.~ Means to reverse flow through blade set |
149.4 | DF | .~.~.~ Plural, selectively adjustable, alternating vane assemblies and blade rows (A,B,A,B) |
150 | DF | .~ Runner, shaft, or separate motor operated |
151 | DF | .~ Upstream of runner |
152.1 | DF | .~.~ Motor runner with selective inlet paths for reversible rotation |
152.2 | DF | .~.~.~ Runner includes radial flow blade set |
153.1 | DF | .~.~.~ Separate runner blade set acted upon for reverse rotation |
153.2 | DF | .~.~.~.~ Axial flow blade set |
154.1 | DF | .~.~.~ Plural inlets simultaneously discharging working fluid onto single blade set |
154.2 | DF | .~.~.~.~ Axial flow blade set |
154.3 | DF | .~.~.~ Including axial flow blade set |
155 | DF | .~.~ Plural, independently adjustable |
156 | DF | .~.~ Deformable, resilient or resiliently biased |
157 | DF | .~.~ Single, axially movable cylinder or plate |
158 | DF | .~.~.~ Movable to position surrounding blade |
159 | DF | .~.~ Plural and arcuately or circularly arranged around runner axis |
160 | DF | .~.~.~ Individually pivoted vanes |
161 | DF | .~.~.~.~ And fixed vane |
162 | DF | .~.~.~.~ Plural, selectively adjustable vane sets |
163 | DF | .~.~.~.~ Pivoted parallel to runner axis |
164 | DF | .~.~.~.~.~ Vanes and blade in same radial plane |
165 | DF | .~.~.~ On same radial plane with blade |
166 | DF | .~.~.~.~ Circumferentially movable around shaft |
167 | DF | .~.~ Movable pipe or nozzle |
167.1 | DF | .~.~ Convertible series-parallel pump |
168.1 | DF | INCLUDING MEANS FOR HANDLING WORKING FLUID LEAKAGE |
168.2 | DF | .~ Leakage through seal between runner or shaft and static part |
168.3 | DF | .~.~ Screw type pumping seal |
168.4 | DF | .~.~ Means specific to axial flow runner |
169.1 | DF | INCLUDING MEANS FOR HANDLING PORTION SEPARATED FROM WORKING FLUID |
169.2 | DF | .~ Moisture or liquid separated from gaseous working fluid e.g., condensate removal, etc.) |
169.3 | DF | .~.~ Vane having specific moisture or liquid directing surface |
169.4 | DF | .~.~ Axial flow blade set and area for collecting moisture or liquid thrown radially outward |
170.1 | DF | BEARING, SEAL, OR LINER BETWEEN RUNNER PORTION AND STATIC PART |
171.1 | DF | .~ Dynamically created seal |
172.1 | DF | .~ Means to seal radial flow pump runner inlet from outlet |
173.1 | DF | .~ Between blade edge and static part |
173.2 | DF | .~.~ Selectively adjustable |
173.3 | DF | .~.~ Resilient, flexible, or resiliently biased |
173.4 | DF | .~.~ Erodable or permanently deformable |
173.5 | DF | .~.~ Labyrinth seal |
173.6 | DF | .~ Between blade supported radial tip ring and static part |
173.7 | DF | .~ Between axial flow runner and vane or vane diaphragm structure |
174.1 | DF | .~ Selectively adjustable |
174.2 | DF | .~ Resilient, flexible, or resiliently biased |
174.3 | DF | .~.~ Seal lies against axial face of runner hub |
174.4 | DF | .~ Erodable or permanently deformable |
174.5 | DF | .~ Labyrinth seal |
175 | DF | INCLUDING ADDITIONAL MEANS CAUSING OR CONTROLLING FLUID FLOW FOR HEAT EXCHANGING, LUBRICATING OR SEALING |
176 | DF | .~ Means subjected to or is working fluid |
177 | DF | INCLUDING HEAT INSULATION OR EXCHANGE MEANS (E.G., FINS, LAGGING, ETC.) |
178 | DF | .~ Working fluid on at least one side of heat exchange wall |
179 | DF | .~.~ Interstage heat exchanger |
180 | DF | .~ Cooling fluid contacts shaft, seal or bearing |
181 | DF | MEANS, DISPOSITION OR ARRANGEMENT FOR CAUSING SUPERSONIC WORKING FLUID VELOCITY |
182.1 | DF | WORKING FLUID PASSAGE OR DISTRIBUTING MEANS ASSOCIATED WITH RUNNER (E.G., CASING, ETC.) |
183 | DF | .~ Plural distributing means immediately upstream of runner |
184 | DF | .~.~ Inlet scrolls, or distributors within inlet scroll |
185 | DF | .~.~ Arcuately or circularly arranged around runner axis |
186 | DF | .~.~.~ On radial plane with runner blade |
187 | DF | .~.~.~.~ Plural, axially spaced sets of distributors |
188 | DF | .~.~.~.~ Radially inward of blade |
189 | DF | .~.~.~ Removably secured or mounted in casing |
190 | DF | .~.~.~.~ Axially arranged securing or mounting means |
191 | DF | .~.~.~ Vanes |
192 | DF | .~.~.~.~ Differentially twisted about radial axis |
193 | DF | .~.~.~.~ Plural, axially spaced vane sets |
194 | DF | .~.~.~.~.~ Diverse size or spacing in different spaced vane sets |
195 | DF | .~.~.~.~ Varied spacing between vanes in same set |
196 | DF | .~ Passage or casing attached removable liner or wear member |
197 | DF | .~.~ Nonmetallic material |
198.1 | DF | .~ Plural rigidly related blade sets |
199.1 | DF | .~.~ Including serial radial flow blade sets and intermediate stationary flow diverter(s) |
199.2 | DF | .~.~.~ Wherein the diverter includes divider vane(s) between the blade sets |
199.3 | DF | .~.~.~.~ Including spirally configurated vane(s) |
199.4 | DF | .~.~ Including an axial-flow blade set |
199.5 | DF | .~.~.~ Plural serial axial-flow blade sets with intermediate stationary flow diverter(s) |
199.6 | DF | .~.~.~ And radial-flow blade set in series therewith |
200 | DF | .~ Specific casing or vane material |
201 | DF | .~ Access opening through portion of casing or cover |
202 | DF | .~ Nozzle discharging onto motor runner |
203 | DF | .~ Casing having tangential inlet or outlet (i.e., centrifugal type) |
204 | DF | .~.~ Scroll-type casing |
205 | DF | .~.~.~ Inlet scroll |
206 | DF | .~.~ Axially directed inlet and tangential outlet |
207 | DF | .~ Pump outlet or casing portion expands in downstream direction |
208.1 | DF | .~ Vane or deflector |
208.2 | DF | .~.~ Plural and arcuately or circularly arranged in radial plane around runner axis |
208.3 | DF | .~.~.~ Plane intersects with runner blade |
208.4 | DF | .~.~.~.~ Plural, radially spaced vane sets |
208.5 | DF | .~.~.~.~ Nonradial flow runner |
209.1 | DF | .~.~.~ Plural, axially spaced vane sets acting successively or having specific spacing means |
209.2 | DF | .~.~.~ Having means for mounting diaphragm or plural vane holder to casing |
209.3 | DF | .~.~.~ Having specific vane mounting means |
209.4 | DF | .~.~.~.~ Vane fixed between radially separate surfaces |
210.1 | DF | .~.~.~ Fixed between radially separate surfaces |
211.1 | DF | .~.~ In radial plane with runner blade |
211.2 | DF | .~.~ Downstream of runner |
212.1 | DF | .~ Scroll or helical type casing with specific exit nozzle |
213.1 | DF | .~ Casing with mounting means |
214.1 | DF | .~ Casing having multiple parts releasably clamped (e.g., casing seal, etc.) |
215.1 | DF | .~ Casing having multiple parts welded, cemented, or fused |
216.1 | DF | .~ With runner shaft of specific shape or material |
217.1 | DF | .~ With runner having corrosion resistant or nonmetallic portion |
218.1 | DF | .~ With runner having conical hub including small diameter facing upstream |
219.1 | DF | .~ Casing with axial, conical flow runner |
220 | DF | .~ Casing with axial flow runner |
221 | DF | .~.~ Having specific features for liquid flow |
222 | DF | .~.~ Pump with casing narrowing to runner |
223 | DF | .~.~ Having runner in orifice of radially extending partition or casing element |
224 | DF | .~ Casing with nonradial flow runner (e.g., circumferential flow, etc.) |
224.5 | DF | .~ Radial flow casing having vaneless annulus diffuser |
225 | DF | .~ Exit chamber in radial plane axially offset from runner (e.g., sludge pump, etc.) |
226 | DF | .~ Annular exit chamber outward of runner |
227 | DF | .~ Runner having flow confining continuous passage |
228 | DF | .~ Runner having full circular shroud for blades |
229 | DF | BEARING, SEAL, OR LINER BETWEEN SHAFT OR SHAFT SLEEVE AND STATIC PART |
230 | DF | .~ Seal |
231 | DF | .~.~ Resiliently biased |
232 | DF | MISCELLANEOUS |
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CROSS-REFERENCE ART COLLECTIONS | ||
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900 | DF | ROTARY BLOOD PUMP |
901 | DF | DRILLED WELL-TYPE PUMP |
902 | DF | ROTARY PUMP TURBINE PUBLICATIONS |
903 | DF | WELL BIT DRIVE TURBINE |
904 | DF | TOOL DRIVE TURBINE (E.G., DENTAL DRILL, ETC.) |
905 | DF | NATURAL FLUID CURRENT MOTOR |
906 | DF | .~ Having specific features for water current |
907 | DF | .~ Vertical runner axis |
908 | DF | .~ Axial flow runner |
909 | DF | AIR STACK OR SHAFT HAVING NATURAL FLUID CURRENT MOTOR |
910 | DF | REVERSIBLE BETWEEN PUMP AND MOTOR USE |
911 | DF | PUMP HAVING REVERSIBLE RUNNER ROTATION AND SEPARATE OUTLETS FOR OPPOSING DIRECTIONS OF ROTATION |
912 | DF | INTERCHANGEABLE PARTS TO VARY PUMPING CAPACITY OR SIZE OF PUMP |
913 | DF | INLET AND OUTLET WITH CONCENTRIC PORTIONS |
914 | DF | DEVICE TO CONTROL BOUNDARY LAYER |
915 | DF | PUMP OR PORTION THEREOF BY CASTING OR MOLDING |
916 | DF | PERPETUAL MOTION DEVICES |