| Subclass |
| Title |
|---|
|
ClassTitle
|
| ===>
ACOUSTICS
|
| | | |
| 0.5 | ![[Patents]](../gifs/ps.gif) | MISCELLANEOUS |
| | | SPEAKING TUBES |
| 18 | | . Systems |
| 19 | | . Alarms and indicators |
| 20 | | . Combined mouth and ear pieces |
| 21 | | . Mouthpieces |
| 22 | | . Tubes |
| 30 | | AUDITORIUM |
| 101 | | GEOPHYSICAL OR SUBSURFACE EXPLORATION |
| 102 | | . Well logging |
| 103 | | . . Programmed or timer-controlled |
| 104 | | . . Directional source or detector |
| 105 | | . . Bore hole or casing condition |
| 106 | | . . Seismic wave generation |
| 107 | | . Programmed or timer-controlled |
| 108 | | . Seismic source and detector |
| 109 | | . . Aerial |
| 110 | | . . Underwater |
| 111 | | . . Plural sources |
| 112 | | . . Plural detectors |
| 113 | | . Seismic wave generation |
| 114 | | . . Vehicle-mounted |
| 115 | | . . Bubble suppression or control |
| 116 | | . . Explosive |
| 117 | | . . . Gas |
| 118 | | . . . . Underwater |
| 119 | | . . Fluid means |
| 120 | | . . . Underwater |
| 121 | | . . Moving weight |
| 122 | | . Seismic wave detection |
| 123 | | ECHO SYSTEM |
| 124 | | . Altitude or depth detection |
| 125 | | SOUND LOCATION |
| 126 | | ANATOMIC OR PROSTHETIC RELATION |
| 127 | | . Dentiphone |
| 128 | | . Ear and mouth |
| 129 | | . . Ear |
| 130 | | . . Auditory canal insert |
| 131 | | . . . Stethoscope |
| 132 | | . . . With diaphragm |
| 133 | | . . . Deflector type |
| 134 | | . . . Eardrum |
| 135 | | . . . Ear insert |
| 136 | | . . Deflector type |
| 137 | | . . Receiver |
| 138 | | MECHANICAL TELEPHONE |
| 139 | | WAVE GENERATION AND DETECTION |
| 140 | | WITH VESSEL |
| 141 | | COMBINED |
| 142 | | WAVE GENERATION |
| 143 | | MOVING SOUND PRODUCER OR DEFLECTOR |
| 144 | | PLURAL DIAPHRAGM SOUND SOURCES |
| 145 | | . Plural chambers |
| 146 | | . With sound-asborbing means |
| 147 | | . Three diaphragms |
| 148 | | DIAPHRAGM AND ENCLOSURE |
| 149 | | . Moisture proof |
| 150 | | . Recessed (e.g., wall-mounted, etc.) |
| 151 | | . With sound-absorbing means |
| 152 | | . With horn |
| 153 | | . Rounded enclosure (e.g., curved, etc.) |
| 154 | | . Inclined diaphragm |
| 155 | | . Reflector baffle |
| 156 | | . Reflex baffle |
| 157 | | DIAPHRAGM |
| 158 | | . Microphone type |
| 159 | | . With horn |
| 160 | | . With resonant chamber |
| 161 | | . With direct mechanical connection to drive unit |
| 162 | | . . Stylus bar |
| 163 | | . Plural dependent diaphragms |
| 164 | | . Sectional diaphragm |
| 165 | | . . Concentric annular section |
| 166 | | . With damping means |
| 167 | | . Critically defined material or coating |
| 168 | | . . Metallic material |
| 169 | | . . Fibrous material |
| 170 | | . . Laminated type |
| 171 | | . Mounting or suspension means |
| 172 | | . . Elastic suspension means |
| 173 | | . Particular shape |
| 174 | | . . Variable thickness |
| 175 | | SOUND-MODIFYING MEANS |
| 176 | | . Lens |
| 177 | | . Intensifying horn |
| 178 | | . . Collapsible |
| 179 | | . . With particular mounting structure |
| 180 | | . . Material |
| 181 | | . . With vibratory filaments |
| 182 | | . . With resonant chamber |
| 183 | | . . . Double wall |
| 184 | | . . Having apertures in walls |
| 185 | | . . With sound-path restriction |
| 186 | | . . . Adjustable |
| 187 | | . . Plural intensifying portions |
| 188 | | . . . Similar portions |
| 189 | | . . Multisection housing |
| 190 | | . . . Separable |
| 191 | | . . With external sound deflector |
| 192 | | . . Particular shape of the horn |
| 193 | | . . . Spiral sound path |
| 194 | | . . . Doubly folded sound path |
| 195 | | . . . Wide angle annular outlet |
| 196 | | . Within tubular means |
| 197 | | . . Adjustable |
| 198 | | . Housing or enclosure (e.g., sound confining and absorbing) |
| 199 | | . . Speaker type |
| 200 | | . . Machine type enclosure |
| 201 | | . . . Offfice type devices (e.g., typewriters, teleprinters, etc.) |
| 202 | | . . . Electical type devices (e.g., transformers, motors, etc.) |
| 203 | | . . . Reaction engine test chamber |
| 204 | | . . . Internal-combustion engine |
| 205 | | . . . Partial enclosure or shroud |
| 206 | | . By wave interference |
| 207 | | . Mechanical vibration attenuator |
| 208 | | . . Damping of flexural structure |
| 209 | | . . Relatively moving parts |
| 210 | | . Sound absorbing fence or screen (e.g., jet engine or vehicle noise) |
| 211 | | . Combined |
| 212 | | . Muffler, fluid conducting type |
| 213 | | . . Reaction engine type |
| 214 | | . . . Upstream (e.g., intake silencer) |
| 215 | | . . . With adjustable outlet nozzle |
| 216 | | . . . . Longitudinally adjustable section |
| 217 | | . . . Removable silencer unit (e.g., mobile) |
| 218 | | . . . Ground installation silencer |
| 219 | | . . . With adjustable internal baffles |
| 220 | | . . . With disparate fluid mingling |
| 221 | | . . . . Liquid |
| 222 | | . . . With sound absorbing material |
| 223 | | . . Silencer for firearms |
| 224 | | . . Sound absorbing ventilating duct or curb (e.g., a/c, heat, air flow type) |
| 225 | | . . With fan to assist fluid flow |
| 226 | | . . With adjustable fluid flow |
| 227 | | . . Pipe-muffler (e.g., tail pipe type) |
| 228 | | . . With exhaust pipe |
| 229 | | . . Carburetor, burner, or compressor intake silencer |
| 230 | | . . Pneumatic type motor (e.g., air hammer, etc.) |
| 231 | | . . With solid particle separator (e.g., spark arrestor, vacuum cleaner, etc.) |
| 232 | | . . Separate distinct units serially connected |
| 233 | | . . Liquid motion silencer |
| 234 | | . . . Water-closet type |
| 235 | | . . Underwater discharge |
| 236 | | . . With muffler cut-out |
| 237 | | . . With pressure relief safety valve |
| 238 | | . . Multiple distinct inlets and/or outlets |
| 239 | | . . . Outlets |
| 240 | | . . Manifold type |
| 241 | | . . Adjustable muffler (i.e., internal or external parts) |
| 242 | | . . Mouthpiece (e.g., telephone, microphone, etc.) |
| 243 | | . . With repair, replacement, or quick disassembly |
| 244 | | . . Corrosion prevention |
| 245 | | . . . Internally coated parts |
| 246 | | . . . Nonmetallic |
| 247 | | . . Straight-through passage |
| 248 | | . . . Continuous conduit |
| 249 | | . . . . With expansion chamber |
| 250 | | . . . . . And side branch |
| 251 | | . . . . . And multi-passage |
| 252 | | . . . With sound absorbing material |
| 253 | | . . . With muffler bypass |
| 254 | | . . . . Valve controlled |
| 255 | | . . . Expansion chamber |
| 256 | | . . With sound absorbing material |
| 257 | | . . . And multi-passage |
| 258 | | . . . Pervious material interposed in flow path |
| 259 | | . . With disparate fluid mingling |
| 260 | | . . . Liquid |
| 261 | | . . . . Sprayed |
| 262 | | . . . Induced by suction |
| 263 | | . . . . Motion induced |
| 264 | | . . With baffle or baffle structure |
| 265 | | . . . Retroverted |
| 266 | | . . . . And side branch chamber |
| 267 | | . . . Coaxial foraminous walls |
| 268 | | . . . Multi-passage |
| 269 | | . . . Expansion chamber type |
| 270 | | . . . . With alternating partial baffles along the length of casing |
| 271 | | . . . . With adjustable or flexible wall |
| 272 | | . . . . Plural chambers |
| 273 | | . . . . And side branch chamber |
| 274 | | . . . . With centrifugal flow |
| 275 | | . . . . And multi-passage |
| 276 | | . . . Side branch |
| 277 | | . . . Movable baffle |
| 278 | | . . . . Biased |
| 279 | | . . . Spiral |
| 280 | | . . . . Helical |
| 281 | | . . . Perpendicular and/or oblique |
| 282 | | . . . Casings |
| 283 | | . . . . Air or liquid cooled |
| 284 | | . Sound absorbing panels |
| 285 | | . . Load bearing block type structure |
| 286 | | . . Specific acoustical properties or dimensions |
| 287 | | . . Movable/foldable panels |
| 288 | | . . Cellular |
| 289 | | . . Light permeable |
| 290 | | . . Multilayer panel or wall structure |
| 291 | | . . . With membrane outer layer |
| 292 | | . . . With perforated or porous face and honeycomb-like core |
| 293 | | . . With channels or cavities in surface layer |
| 294 | | . . Materials |
| 295 | | . Space absorbers |
| 296 | | . Methods |
| | | ****************************** |
| | | CROSS-REFERENCE ART COLLECTIONS |
| | | ****************************** |
| 400 | | WAVE COUPLING |
| 401 | | . Earth |
| 402 | | . Liquid |
| 403 | | REFRIGERATOR COMPRESSSOR MUFFLER |
| 404 | | HOBBY CRAFT ENGINE MUFFLER |
![[Manual of Classification, Class Listing]](../gifs/moc.gif)
![[Classification Index]](../gifs/c_index.gif)
![[USPTO Home Page]](../gifs/home.gif)
![[Top]](../gifs/top.gif)