US Patent Class 416
FLUID REACTION SURFACES (I.E., IMPELLERS)



Electronic
File
Wrappers

Electronic
Patent
Documents

Paper
Patent
Documents

Current as of: June, 1999
Click for Main Headings
Click DF for Definitions
Click for All Classes

Internet Version by PATENTEC © 1999       Terms of Use



Products
and
Services

  DF  CLASS NOTES
1  DF  METHOD OF OPERATION
2  DF  HAVING FRANGIBLE OR FUSIBLE PART OR CONNECTION
3  DF  ACTUATION DIRECTLY RESPONSIVE TO MAGNETIC OR ELECTRICAL EFFECT
4  DF  ROTARY SKIN FRICTION TYPE (E.G., MAGNUS ROTOR, ETC.)
5  DF  WITH ILLUMINATION MEANS
6  DF  DRIVEN BY PULSATING OR DIVERSE WORKING FLUID
7  DF  WORKING MEMBER SUPPORTED ON ENDLESS FLEXIBLE CARRIER
8  DF  .~ Feathering blades
9  DF  WITH MEANS POSITIONING FLUID CURRENT DRIVEN IMPELLER RELATIVE TO FLOW DIRECTION
10  DF  .~ Offset relative to flow direction
11  DF  .~.~ Upstream pivotal mounting
12  DF  .~.~ Responsive to folding or feathering of flow-aligned vane
13  DF  .~.~ Horizontal deflection relative to flow-aligned vane
14  DF  .~.~.~ With impeller brake or stop
15  DF  .~.~.~ And responsive to transverse vane
16  DF  .~.~.~ Biased to position by weight of parts
17  DF  .~ Feathering cycle related to flow direction
18  DF  WITH GYROSCOPIC REFERENCE MEANS FOR ROTOR CONTROL
19  DF  SINGLE BLADE ROTARY IMPELLER WITH COUNTERBALANCE
20 R  DF  DRIVE BY FLUID REACTION JET ON WORKING MEMBER
21  DF  .~ Combustion chamber carried by member
22  DF  .~.~ Air-ingestion rotor tip unit
20 A  DF  .~ Articulated or flexible connection
23  DF  WITH MEANS MOVING WORKING FLUID DEFLECTING WORKING MEMBER PART DURING OPERATION (E.G., AILERON, ETC.)
24  DF  .~ Cyclic movement of member or part
25  DF  INTERRELATED CONTROLS FOR IMPELLER AND DRIVE MEANS
26  DF  .~ Pitch adjustment related to drive brake or clutch operation
27  DF  .~ Pitch adjustment and throttle regulation with condition sensing means
28  DF  .~.~ Temperature responsive control
29  DF  .~.~ Drive engine intake air responsive control
30  DF  .~.~ Electrical control or sensing means
31  DF  WITH CONTROL MEANS RESPONSIVE TO NON-CYCLIC CONDITION SENSING, CENTRIFUGAL ACTUATION, TORQUE OR THRUST
32  DF  .~ Control of drive brake or clutch
33  DF  .~ Plural distinct impellers having related control
34  DF  .~.~ Synchronizing
35  DF  .~ With electrical means comparing and reducing error related to preset datum
36  DF  .~ Plural diverse condition responsive
37  DF  .~.~ Relative ambient condition sensing (e.g., temperature, density, wind force, etc.)
38  DF  .~.~ Drive engine condition excluding shaft speed or torque
39  DF  .~ Temperature or icing condition responsive
40  DF  .~ Responsive to relative working fluid velocity
41  DF  .~.~ Natural fluid current
42  DF  .~ Pressure or altitude responsive
43  DF  .~ Responsive to condition of torque or thrust of device or driving or driven means or mechanism
44  DF  .~ Impeller rotation speed responsive
45  DF  .~.~ Valve element directly movable by centrifugal force
46  DF  .~.~ Including pitch lock or adjustable stop
47  DF  .~.~ Control by means of separate motor
48  DF  .~.~.~ Motor carried by impeller
49  DF  .~.~ Including reset or manual override of control
50  DF  .~.~.~ Of centrifugal weight governor
51  DF  .~.~ Centrifugal mass moved along guided or lineal path
52  DF  .~.~ Centrifugal mass coaxial with impeller
53  DF  .~.~.~ Pivot axis parallel to rotation axis
54  DF  OPERATED BY ART DEVICE
55  DF  .~ Vehicular device
56  DF  .~ Runner supported rocking device
57  DF  .~.~ Inertial actuation
58  DF  .~.~ Continuous impeller rotation
59  DF  .~ Pivot supported swinging device
60  DF  .~ Integral with or directly attached to rotary device or part (e.g., flywheel, pulley, etc.)
61  DF  WITH MEASURING, TESTING, SIGNALLING OR INSPECTION MEANS
62  DF  REMOVABLE AUXILIARY ATTACHMENT TO WORK SURFACE
63  DF  AMBULANT, BODY SUPPORTED OR WITH CARRYING HANDLE
64  DF  TRANSLATORY REACTION MOTION
65  DF  .~ And concurrent rotary reaction motion
66  DF  .~ Flexible or relatively movable working member or part
67  DF  .~.~ Valve type
68  DF  .~.~ Complemental pivoted surfaces
69  DF  OPERATOR SUPPORTED MANUALLY ACTUATED TYPE
70 R  DF  .~ Operation solely by direct hand manipulation
71  DF  .~.~ Simulation or having indicia, ornamentation or combined feature
72  DF  .~.~ Relatively movable portions
73  DF  .~.~.~ Arcuate planar folding of working surface
70 A  DF  .~.~ Fans
74  DF  .~ Fulcrum support type (e.g., oar, scull, etc.)
75  DF  .~ Reciprocatory pin-slot actuator
76  DF  .~ Rotary hand crank (e.g., egg beater, etc.)
77  DF  .~.~ Intermeshing or interdigitated working members
78  DF  CRANK TYPE DIPPING OR STIRRING MOTION
79  DF  OSCILLATORY REACTION MOTION
80  DF  .~ With pendulum, counterbalance or inertial weight
81  DF  .~ Flexible working member
82  DF  .~ Relatively movable working member portions
83  DF  .~ Compound motion (e.g., feathering, undulating, etc.)
84  DF  BUOYANT OR INFLATABLE WORKING MEMBER
85  DF  FLOAT SUPPORTED
86  DF  .~ Buoyant hub or rim
87  DF  RADIALLY EXTENSIBLE OR RETRACTIBLE ROTOR WORKING MEMBER
88  DF  .~ Variable work surface or non-rigid connection
89  DF  .~ Having pitch adjustment
90 R  DF  WITH FLUID PASSAGE IN WORKING MEMBER COMMUNICATING WITH WORKING FLUID
91  DF  .~ Both inlet and outlet to working fluid
92  DF  .~ Discharge solely at periphery normal to rotation axis
90 A  DF  .~ Air and watercraft propellers
93 R  DF  AMBIENT FLUID OR EXHAUST GAS DIRECTED THROUGH HUB, FAIRING OR HOUSING
94  DF  .~ Aircraft spinner or cowling
93 A  DF  .~ Water or marine propellers
95  DF  WITH HEATING, COOLING OR THERMAL INSULATION MEANS
96 R  DF  .~ Changing state mass within or fluid flow through working member or carrier
97 R  DF  .~.~ Flow exhausted to working fluid
97 A  DF  .~.~.~ Laminated or porous skin
96 A  DF  .~.~ Blade inserts
98  DF  SUSTAINED ANCILLARY MOVEMENT OF ROTARY WORKING MEMBER (E.G., CYCLIC FEATHERING, ETC.)
99  DF  .~ Intermounted rotary members
100  DF  .~ Continuous rotor oscillation
101  DF  .~ Cyclic radial movement
102  DF  .~ Responsive to carrier tilt
103  DF  .~ Lead-lag type rotor blade movement
104  DF  .~.~ And additional correlated blade movement (e.g., pitch change, etc.)
105  DF  .~.~ Positive means effecting lead-lag movement
106  DF  .~.~ With movement restraining means (i.e., damping)
107  DF  .~.~.~ Resilient bias or limit stop
108  DF  .~ By actuator eccentric to rotation axis
109  DF  .~.~ Stationary eccentric guide or track
110  DF  .~ Continuous rotation about plural axes
111  DF  .~.~ Motion about parallel axes
112  DF  .~ Responsive to fixed actuator (e.g., cam or trip, etc.)
113  DF  .~.~ Axial cam
114  DF  .~.~.~ Selectively adjustable
115  DF  .~.~.~.~ Plural impellers
116  DF  .~.~ Stationary cam track or guide surface
117  DF  .~ Responsive to gravity or working fluid force
118  DF  .~.~ Having manual control or adjustment
119  DF  .~.~ Motion about parallel axes
120  DF  PLURAL IMPELLERS HAVING RELATIVE MOVEMENT OR INDEPENDENT SUPPORTS
121  DF  .~ Shiftable support
122  DF  .~ Intersecting or interdigitated paths of operation
123  DF  .~ Divergent rotation axes
124  DF  .~ Coaxial rotation
125  DF  .~.~ Individual prime mover
126  DF  .~.~ Concentric working members
127  DF  .~.~ Concurrent adjustment
128  DF  .~.~ Oppositely rotating impellers
129  DF  .~.~.~ Engine driven
130  DF  .~ Differential or independent adjustment
131  DF  ARTICULATED, RESILIENTLY MOUNTED OR SELF-SHIFTING IMPELLER OR WORKING MEMBER
132 R  DF  .~ Sectional, staged or nonrigid working member
132 A  DF  .~.~ Flexible sheet or plate
132 B  DF  .~.~ Windmills
133  DF  .~ Axially displaceable rotary carrier (e.g., hub, etc.)
134 R  DF  .~ Nonmetallic resilient mounting
134 A  DF  .~.~ Aircraft rotors
135  DF  .~ Resilient bias or mount
136  DF  .~.~ Rotary working member pivotable solely about radial axis
137  DF  .~.~.~ Convolute spring coaxial with impeller shaft
138  DF  .~.~ With manual control means
139  DF  .~ Including weight bias means
140  DF  .~ Including movement limit stop or damping means
141  DF  .~ Plural articulation
142  DF  WORKING MEMBER FOLDABLE, PIVOTABLE OR COLLAPSIBLE TO NON-USE POSITION
143  DF  .~ Member movement in rotation plane
144  DF  WITH WEIGHT-BALANCING MEANS
145  DF  .~ Self-shifting or selectively adjustable mass
146 R  DF  COMBINED OR CONVERTIBLE
146 A  DF  .~ Hub lubrication or seal
147  DF  HAVING POSITIVE MEANS FOR IMPELLER ADJUSTMENT
148  DF  .~ Tiltable carrier (e.g., hub, etc.)
149  DF  .~ Shiftable carrier support
150  DF  .~.~ Rectilinear motion
151  DF  .~ Power derived from impeller shaft
152  DF  .~.~ By brake application or release
153  DF  .~ Having pitch lock or adjustable stop
154  DF  .~.~ Fluid motor for impeller adjustment
155  DF  .~ Motor bodily rotatable with impeller hub or shaft
156  DF  .~.~ Fluid motor
157 R  DF  .~.~.~ Coaxial with impeller shaft
157 A  DF  .~.~.~.~ Rotary fluid motor
157 B  DF  .~.~.~.~ Plural blade units
158  DF  .~.~.~ Working member mounted or housed
159  DF  .~ Power or manual actuator on non-rotatable part
160  DF  .~.~ Planetary gearing connecting rotatable and non-rotatable parts
161  DF  .~.~ Axially movable impeller
162  DF  .~.~ Having motor
163  DF  .~.~ Adjustment rod through entire impeller shaft
164  DF  .~.~ Reciprocating sleeve or collar on or rod in impeller shaft
165  DF  .~.~.~ Reciprocated by coaxial screw
166  DF  .~.~.~ Rack-pinion connection to working member
167  DF  .~.~.~ Pin-slot or cam-slot connection to working member
168 R  DF  .~.~.~ Link connection to working member
168 A  DF  .~.~.~.~ Turbo-machine
169 R  DF  HAVING CLUTCH OR BRAKE MEANS
169 A  DF  .~ Engine cooling fans
170 R  DF  SPECIFIC DRIVE OR TRANSMISSION MEANS
171  DF  .~ Impeller driven by fluid motor
172  DF  .~ Alternating rotation
173  DF  .~ Manual powered means
170 HM  DF  .~ Hand mixers
174  DF  HAVING LUBRICATING, SEALING, PACKING OR SPECIFIC BEARING MEANS BETWEEN IMPELLER OR SHAFT AND STATIC PART
175  DF  DIVERSE IMPELLERS OR WORKING MEMBERS
176  DF  SPIRAL BLADE OR FLOW PASSAGE (360 DEGREE)
177  DF  .~ Flow confining casing, shroud or passage
178  DF  PERIMETRIC BLADING EXTENDING AXIALLY BETWEEN ANNULAR MEMBERS (E.G., SQUIRREL CAGE TYPE, ETC.)
179  DF  ROTOR HAVING FLOW CONFINING OR DEFLECTING WEB, SHROUD OR CONTINUOUS PASSAGE
180  DF  .~ Blades projecting axially from concavo-convex annular web
181  DF  .~ Apertured or foraminous web or shroud
182  DF  .~ Radially extending web or end plate
183  DF  .~.~ Circumferentially or radially angulated or discontinuous blades or sections (e.g., stepped, etc.)
184  DF  .~.~ Spaced intermediate ends of opposed axial flow impeller
185  DF  .~.~ Circumferentially and radially continuous web or end plate
186 R  DF  .~.~.~ Having opposed annular surface between adjacent blades
187  DF  .~.~.~.~ Angularly spaced, axially elongated blades (i.e., squirrel cage type)
186 A  DF  .~.~.~.~ Adjustable blade or part
188  DF  .~.~.~ Conical web
189  DF  .~ Axially extending shroud ring or casing
190  DF  .~.~ Vibration inhibiting or expansion-contraction structure
191  DF  .~.~ Segmental shroud
192  DF  .~.~ Having radial flange
193 R  DF  .~.~ Spaced inwardly of impeller periphery
193 A  DF  .~.~.~ Root platforms
194  DF  LASHING BETWEEN WORKING MEMBERS OR EXTERNAL BRACING
195  DF  .~ Peripheral
196 R  DF  .~ Connecting adjacent work surfaces
196 A  DF  .~.~ Non-turbo machine (windmills)
197 R  DF  CUPPED REACTION SURFACE NORMAL TO ROTATION PLANE
197 A  DF  .~ Air and water motors (natural fluid current)
197 B  DF  .~ Pelton wheels (impulse wheels)
197 C  DF  .~ Torque converters
198 R  DF  MULTIPLE AXIALLY SPACED WORKING MEMBERS
199  DF  .~ Opposed axial flow
200 R  DF  .~ Circumferentially offset
200 A  DF  .~.~ Turbo machine
201 R  DF  .~ Differing radii
201 A  DF  .~.~ Non-turbo machine
198 A  DF  .~ Turbo machine
202  DF  PROJECTING BLADE AXIS OFFSET FROM ROTATION AXIS
203  DF  UNSYMMETRICAL IMPELLER OR DISSIMILAR WORKING MEMBERS
204 R  DF  SPECIFIC WORKING MEMBER MOUNT
205  DF  .~ Adjustable
206  DF  .~.~ Spring biased detent
207  DF  .~.~ Blade releasably clamped
208  DF  .~.~.~ Split impeller hub
209  DF  .~.~ Thimble or sleeve fixed on impeller blade
210 R  DF  .~ Distally supported on radial arm
211  DF  .~.~ Axially extending blade
210 A  DF  .~.~ Turbo machine
212 R  DF  .~ Interlocking blades
212 A  DF  .~.~ Turbo machine
213 R  DF  .~ Welded, cemented or fused
213 A  DF  .~.~ Non-turbo machine
214 R  DF  .~ Blade held between separable surfaces
214 A  DF  .~.~ Turbo machine
215  DF  .~ Blade received by continuous circumferential channel
216  DF  .~.~ Radially spaced ribs or grooves
217  DF  .~.~ Divided blade root
218  DF  .~.~ Having circumferentially extending binder
219 R  DF  .~ Blade received in well or slot
220 R  DF  .~.~ Having blade locking means
221  DF  .~.~.~ Resilient or deformable
220 A  DF  .~.~.~ Non-turbo machine
219 A  DF  .~.~ Non-turbo machine
222  DF  .~ Blade straddles carrier
204 A  DF  .~ Turbo machine
223 R  DF  SPECIFIC BLADE STRUCTURE (E.G., SHAPE, MATERIAL, ETC.)
224  DF  .~ Having wear liner, sheathing or insert
225  DF  .~ Having spanwise compression means
226  DF  .~ Formed with main spar
227 R  DF  .~ Openwork (e.g., lattice, looped, etc.)
227 A  DF  .~.~ Propeller and non-mixers
228  DF  .~ Tined or irregular periphery
229 R  DF  .~ Laminated, embedded member or encased material
230  DF  .~.~ Wire, fiber, strand or fabric
229 A  DF  .~.~ Turbo machine
231 R  DF  .~ Apertured or permeable
231 A  DF  .~.~ Mixers or agitators
231 B  DF  .~.~ Slotted blade
232  DF  .~ Hollow
233  DF  .~.~ Having brace means bridging cavity
234  DF  .~ Integrally shaped or blended into hub
235  DF  .~ Irregular, flanged or channel forming blade surface
236 R  DF  .~.~ Ribbed or grooved
236 A  DF  .~.~.~ Concentric or circular ribs
237  DF  .~.~ Angular or offset
238  DF  .~ Cantilever blade
239  DF  .~ Blade cuff or shank construction
240  DF  .~ Flexible
241 R  DF  .~ Coating, specific composition or characteristic
241 A  DF  .~.~ Plastic or synthetic material
241 B  DF  .~.~ Ceramic material
242  DF  .~ Reverse curve surface
243  DF  .~ Concave surface
223 A  DF  .~ Turbo machine
223 B  DF  .~ Radial flow devices
244 R  DF  SUPPORT MOUNTING, CARRIER OR FAIRING STRUCTURE
245 R  DF  .~ Spinner or fairwater cap
245 A  DF  .~.~ Water or marine propellers
246  DF  .~ Selectively adjustable impeller mount
244 A  DF  .~ Turbo machine
244 B  DF  .~ Water or marine propellers
247 R  DF  PROTECTIVE SCREEN OR GUARD
247 A  DF  .~ Water or marine propellers
248  DF  MISCELLANEOUS (E.G., BLADE ROOT OR ROOT BLOCK, ETC.)
******************************
CROSS-REFERENCE ART COLLECTIONS
******************************
500  DF  VIBRATION DAMPING FEATURES
501  DF  FLY BRUSH TYPE IMPELLER
******************************
DIGESTS
******************************
DIG 1  DD  Stalker
DIG 2  DD  Formulas of curves, etc.
DIG 3  DD  Sheet metal
DIG 4  DD  Fluid current motor and generator
DIG 5  DD  Variable camber or chord length
DIG 6  DD  Supports for natural fluid current motors
DIG 7  DD  Inlet and outlet
DIG 8  DD  Stack or chimney with fluid motor
DIG 9  DD  Savonius