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Class Number: 310 Class Title: ELECTRICAL GENERATOR OR MOTOR STRUCTURE Subclass Subclass Number Title 1 EDUCATIONAL OR CONSTRUCTION UNITS OR KITS 300 NON-DYNAMOELECTRIC 301 .Nuclear reaction 302 ..Contact potential difference 303 ..P-N semiconductor 304 ..Secondary electron emission 305 ..Direct charge particle emission 306 .Thermal or pyromagnetic 307 ..With heat actuated bimetal element 308 .Charge accumulating 309 ..Electrostatic 310 ...Friction 311 .Piezoelectric elements and devices 312 ..Adding or subtracting mass 313 R ..Surface acoustic wave devices 313 A ...Orientation of piezoelectric material 313 B ...Interdigitated electrodes 313 C ....Envelope or apodized 313 D ....Grating or reflector in wave path 314 ..Electrical systems 315 ...Temperature compensation circuits 316 ...Input circuit for simultaneous electrical and mechanical output from piezoelectric element 317 ...Input circuit for mechanical output from piezoelectric element 318 ...Input circuit for electrical output from piezoelectric element 319 ...Electrical output circuit 320 ..Piezoelectric slab having different resonant frequencies at different areas 321 ..Combined with resonant structure 322 ...Acoustic wave type generator or receiver 323 ...Direct mechanical coupling 324 ...Diaphragm 325 ...Sandwich or Langevin type 326 ..Combined with damping structure 327 ...On back of piezoelectric element 328 ..With mechanical energy coupling means 329 ...Including inertia type operator 330 ...Bending type 331 ....Plural elements 332 .....Multimorph 333 ...Shear or torsional type 334 ...Acoustic wave type generator or receiver 335 ....With lens or reflector 336 ....Nondestructive testing type 337 ....Underwater type 338 ...Force or pressure measuring type 339 ...Voltage, spark or current generator 340 ..Encapsulated or coated 341 ..With temperature modifier and/or gas or vapor atmosphere controll 342 ...For plural piezoelectric elements 343 ...With heating element 344 ...Sealed unit 345 ..Supported by elastic material 346 ..With temperature compensating structure 347 ...Compensated air gap 348 ..With mounting or support means 349 ...Air gap 350 ....Adjustable 351 ...Suspended by thin member 352 ....Point contact on major surfce only 353 ....Contact at edges only 354 ...Clamped 355 ....Spring bias 356 .....90 degrees to major surface and margin clamped only 357 ..Orientation of piezoelectric polarization 358 ...Ceramic composition (e.g., barium titanate) 359 ....More than one poling direction (e.g., Rosen transformer) 360 ..Rotation of crystal axis (e.g., cut angle) 361 ...Quartz 362 ...Rochelle salt 363 ..Electrode materials 364 ...Multilayer 365 ..Electrode arrangement 366 ...More than two 367 ..Piezoelectric element shape 368 ...Rectangular plate 369 ...Circular disc, ring, or cylinder 370 ..."U" or "tuning fork" shape 371 ...Sphere or hemisphere 10 DYNAMOELECTRIC 11 .Conducting fluid 12 .Linear 13 ..Fixed and movable wound elements 14 ..Solenoid and core type 15 .Reciprocating 16 ..With cooling or temperature modification 17 ..With other elements 19 ...Speed control or time delay 20 ...Motion-converting mechanism 21 ....Pivoted or flat-spring armature 22 .....Plural armatures 23 ....Solenoid and core type 24 .....Plural cores 25 ..Reed type 26 ..Magnetostrictive 27 ..Fixed and movable wound elements 28 ..Direct-connected 29 ...Pivoted or flat-spring armature 30 ...Solenoid and core 31 ..Self-actuated interrupter 32 ...Pivoted or flat-spring armature 33 ....Plural armatures 34 ...Solenoid and core 35 ....Successively energized solenoid coils 36 .Oscillating 37 ..With motion-converting mechanism 38 ..Direct-connectedd 39 ..With interrupter 40 R .Rotary 40.5 ..Self-nutating or moving (e.g., oscillating fan, etc.) 41 ..With mechanical starters 42 ..With assembling, metal casting or machining feature 43 ..Molded plastic 44 ..Powdered metal 45 ..Impregnated or coated 46 ..Magnetic motors 47 ...Portable or hand tool (e.g., dry shavers) 48 ...With other elements 49 R ...Step-by-step 49 A ....Claw-tooth and printed circuit components 50 ..Portable or hand tool 51 ..Vibration or noise suppression 52 ..Cooling or fluid contact 53 ...With control means 54 ...Liquid coolant 55 ...Nonatmospheric gas 56 ...With gas purification or treating 57 ...Intermediate confined coolant 58 ...Circulation 59 ....Plural units or plural paths 60 R ....Self-forced 61 .....Rotor passage 62 .....Suction pump or fan 63 .....Pressure pump or fan 60 A .....Hollow passages 64 ....Heat-exchange structure 65 .....Spacers (e.g., laminae, coils, etc.) 66 ..With other elements 67 R ...Inbuilt or incorporated unit 67 A ....Bicycle-hub generators 68 R ...Electric circuit elements 69 ....Shaft-driven switch (e.g., blasting generators) 70 R .....Distributor or timer (e.g., ignition magnetos) 70 A ......Ignition systems 71 ....Connectors, terminals or lead-ins 72 ....Impedance devices 73 ....Illuminating devices 68 A ....Manually operable (e.g., switches, rheostats, etc.) 68 B ....Condition responsive (e.g., position, torque, etc.) 68 C ....Temperature, current-responsive, i.e., protectors 68 D ....Conversion elements, (e.g., transformers, rectifiers, etc.) 68 E ....Motion responsive (e.g., centrifugal switches) 74 ...Inertia or fly-wheel device 75 R ...Drive mechanism 76 ....Brake and clutch 77 ....Brake 78 ....Clutch 79 ....Shaft and armature timing or phasing connection 80 ....Motion conversion 81 .....Unbalanced weight (e.g., vibrators) 82 .....Swash plate 83 .....Gearing 84 .....Impulse coupling 75 A ....Spring or gravity drivee 75 B ....Hand- or foot-operated 75 C ....Rim drive (e.g., bicycle generator drive by wheel, rim, or tire) 75 D ....Flexible shaft or coupling and hollow shaft drive 85 ...Mechanical shields or protectors 86 ....Shield in air gap 87 ....Submersible 88 ....Dirt, moisture or explosion proof 89 ....Housings, windows or covers 90 ...Bearing or air-gap adjustment or bearing lubrication 90.5 ....Magnetic bearing 91 ...Supports 92 ..Torque-transmitting clutches or brakes 93 ...Brake type 94 ...Automatic control 95 ....By speed 96 ...With other drive mechanism 97 ....Output bias or resistance device 98 ....Drive motor 99 ....Gearing 100 ....Mechanical clutch 101 ...Plural units 102 R ...Generator-motor type 102 A ....Homopolar clutches 103 ...Magnetic field type 104 ....With air-gap shield 105 ....Induced or eddy current type 106 .....Magnetic reluctance feature 107 .....With collection means for induced current 108 ......Delivery to external device 109 .......Electric motor 110 .......Impedance 111 ..Generated wave-form modification 112 ..Plural units, structurally united 113 ...Motor-generator sets 114 ..Plural rotary elements 115 ...Field and armature both rotate 116 ....Limited movement 117 .....Mechanical bias 118 ....With interconnecting drive mechanism 119 .....Fluid-drive mechanism 120 .....Friction-drive mechanism 121 .....Mechanically controlled element 122 ......By additional dynamoelectric machine 123 ......Friction brake 124 ...Plural short-circuited rotary elements 125 ....Squirrel cage type 126 ...Plural armatures in common field 127 ..Plural collector-type machines 128 ...Commutator and slip-ring type 129 ....Synchronous or rotary converter 130 .....For plural wire D.C. system 131 ....Different armature circuits 132 .....Polyphase armature winding 133 ....Common armature winding 134 .....With plural field windings 135 ....Commutator in field circuit 136 ...Plural commutator typee 137 ....Double current D. C. machines 138 .....Dynamotor type 139 .....Hetero-axial excitation 140 ....Plural armature windings 141 .....Plural field windings 142 ....Plural field windings 143 ...Plural slip-ring sets 144 ....Plural armature windings 145 .....Plural sets of poles 146 .....Polyphase windings 147 .....Slip rings in field circuit 148 ...Plural sets of brushes 149 ....Plural field windings 150 .....Polyphase arrangement 151 ....Short circuiting conductor between brushes 152 ..Permanent magnet machines 153 ...Inbuilt with flywheel (magneto) 154 ...Permanent magnet stator 155 ....Inductor type 156 ...Permanent magnet rotor 157 ..Vertically disposed 158 ..Universal (A.C. or D.C.) 159 ..A.C. 160 ...Frequency converters 161 ...Phase-shifter type 162 ...Synchronous 163 ....Reaction type 164 .....Toroidal coil 165 ....D.C. excited 166 ...Induction 167 ....With repulsion-starting 168 ....Inductor-type generators (variable reluctance) 169 .....High frequency 170 ......Multifrequency 171 ....Induction generators 172 ....Shifting field (e.g., shading pole) 173 ...Commutated 174 ....Single phase 175 .....Conduction operation 176 .....Transformer operation 177 ..D.C. 178 ...Homopolar 179 ..Windings and core structure 180 ...Field or excitation windings or structure 181 ....Combined permanent and electromagnet 182 ....With short-circuited winding or conductor 183 .....Damper winding 184 ....Plural field windings 185 .....Plural sets of poles 186 .....Interpole, compensating or neutralizing poles 187 .....Slotted or divided pole 188 .....Differentially related 189 ....Variable length or tapped winding 190 ....Magnetic shunts for shifting field flux 191 ....Adjustable magnetic structure 192 ....Nonmagnetic inserts or air gaps 193 ....Nonuniform core cross section 194 ....Coil supports and spoolss 195 ...Armature or primary 196 ....Corona-prevention 197 ....With short-circuited winding or conductor 198 ....Plural windings 199 .....Combined stationary and rotary 200 ....Variable length or tapped windings 201 ....Bar windings 202 ....Open windings 203 ....Closed windings 204 .....Equalizers 205 .....Multiplex 206 .....Lap 207 .....Wave 208 ....Coils 209 ....Adjustable magnetic structure 210 ...Secondary windings or conductors 211 ....Squirrel cage 212 .....Inherently variable impedance (double squirrel cage) 213 ...Antiparasitic conductors (imbricated) 214 ...Coil retainers or slot closers 215 ...Slot liners 216 ...Core features 217 ....Securing laminae 218 ....Pole assembly and securing means 219 ..Current collectors 220 ...Spark-reduction 221 ....Arc extinguishers 222 ....Spark-neutralizing current 223 ....Flux compensators 224 .....Commutating poles or windings 225 .....Short-circuited coil circuit 226 .....Field-distortion 227 ...With cooling 228 ...With cleaning, lubricating, resurfacing or repairing 229 ...Brush-traversing 230 ...Circumferential brush shifting on reversal 231 ...Rotary structure 232 ....Slip rings 233 ....Commutators 234 .....Winding connectors 235 .....Molded support 236 .....Cylindrical or drum 237 .....Disc 238 ...Fixed structure 239 ....Brush holders or rigging 240 .....Brush-lifting 241 .....Circumferential adjustment 242 .....Brush engagements or guides 243 .....Fluid pressure-operated 244 .....Brush affixed to pivoted arm 245 .....Slidable brush 246 ......Pressure arm 247 ......Axial spring 248 ....Brushes 249 .....With electrical connector 251 .....Structure (e.g., composite material) 252 .....With composition feature 253 ......Carbonaceouss 254 ..Stator structure 255 ...For railway-type machines 256 ...Stray field flux loss prevention 257 ...Interfitting or claw-tooth stators 258 ...Frame and core type 259 ....Core assembly 260 ....End turn supports 261 ..Rotor structure 262 ...High-speed rotor type 263 ...Interfitting or claw tooth rotors 264 ...Armatures 265 ....Drum 266 ....Hollow (e.g., double air gap) 267 ....Ring 268 ....Disc 269 ....Salient pole 270 ...End turn supports 271 ...Banding 272 ..Elements 273 ..Miscellaneous 40 MM ..Miniature motors * ****************************** * CROSS-REFERENCE ART COLLECTION * ****************************** 800 PIEZOELECTRIC POLYMERS (E.G., MYLAR, PVDF) * ****************************** * DIGESTS * ****************************** DIG 2 Hysteresis rotors and motors DIG 3 Hall effect generators and converters DIG 6 Printed-circuit motors and components