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| You are viewing a USPC Schedule. |
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| Class 277 | SEAL FOR A JOINT OR JUNCTURE |
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![[List of Pre Grant Publications for class 277 subclass 300]](../as.gif) | ![[List of Patents for class 277 subclass 300]](../ps.gif) | 300 | PROCESS OF DYNAMIC SEALING |
| | 301 |  Close proximity seal (e.g., contactless, fluent, etc.) |
| | 302 |  Magnetic |
| | 303 | Labyrinth |
| | 304 | Formed by pressurized sealing fluid introduced to form barrier |
| | 305 | Floating ring or bushing |
| | 306 | Relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.) |
| | 308 | Contained or compressed by gland member in packing box |
| | 309 | Peripheral radially sealing flexible projection (e.g., lip, piston cup seal, etc.) |
| | 310 | Piston ring for internal combustion engine |
| | 311 | Flexible ring |
| | 312 | PROCESS OF STATIC SEALING |
| | 313 | Between parts of internal combustion engine |
| | 314 | Pipe, conduit, or cable |
| | 315 | Using flexible sleeve, boot, or diaphragm |
| | 316 | Forming in place (i.e., in situ) |
| | 317 | SEAL COMBINED WITH INDICATOR, SAMPLER, OR INSPECTION FEATURE |
| | 322 | SEAL FOR WELL APPARATUS |
| | 323 | Installation, removal, assembly, disassembly, or repair feature |
| | 324 | For overpressure control device (e.g., seal for a blowout preventer, etc.) |
| | 328 | Longitudinally actuated packer for above ground apparatus |
| | 331 | Inflatable packer |
| | 335 | Axially facing packing cup |
| | 336 | For below ground apparatus |
| | 343 | Seal (e.g., wiper, oil saver, stripper, etc.) accommodates irregular size of inner part |
| | 344 | Segmented radially actuated packer (e.g., oil saver, gas saver, etc.) for above ground apparatus |
| | 345 | SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL) |
| | 346 | Diverse and distinct dynamic seals |
| | 347 | Close proximity seal (e.g., contactless, fluent, etc.) |
| | 348 |  And relatively rotatable radially extending contacting sealing members (e.g., face, mechanical, etc.) |
| | 350 | And circumferential contact seal |
| | 352 | Relatively rotatable radially extending contacting sealing members (e.g., face, mechanical, etc.) |
| | 353 | And circumferential peripheral radially sealing flexible projection (e.g., lip seal, etc.) |
| | 354 | Helically threaded part |
| | 355 | Brush seal |
| | 356 | For journal box (e.g., railway car journal, etc.) |
| | 357 | For rotary piston |
| | 358 | Relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.) |
| | 359 | Temperature responsive feature |
| | 361 | Multiple sealing faces (e.g., double seals, etc.) |
| | 362 | Floating intermediate sealing face member |
| | 364 | Concentric and radially spaced |
| | 365 | Three or more |
| | 366 | Shaft mounted sealing face members biased axially away from each other |
| | 367 | Shaft mounted sealing face members biased axially towards each other |
| | 368 | Housing mounted sealing face members biased axially away from each other |
| | 369 | Housing mounted sealing face members biased axially towards each other |
| | 370 | Installation, removal, assembly, disassembly, or repair feature |
| | 377 | Particular axial biasing feature |
| | 378 | Magnetic |
| | 379 | Particular spring feature |
| | 380 |  Made of elastomeric material |
| | 383 | Imbedded in another material |
| | 384 | Washerlike shape |
| | 385 | Arrangement or location |
| | 387 | Fluid pressure |
| | 390 | Particular secondary mounting seal or driving connection |
| | 391 | Flexible sleeve, boot, or diaphragm |
| | 392 | Between sealing face member and shaft or part relating to shaft |
| | 393 | Particular connecting feature to sealing face member |
| | 394 | Peripheral radially sealing flexible projection (e.g., lip seal, etc.) |
| | 396 | Axially compressed packing |
| | 397 | Frictionally engaged or interfitting projection and recess |
| | 398 | Eccentric, gyratory, or oscillatory motion |
| | 399 | Particular sealing face member configuration |
| | 400 | Hydrodynamic feature |
| | 401 | Fluid passage to the sealing face |
| | 402 | Flexible projection (e.g., lip seal, etc.) |
| | 403 | Angled or tapered sealing face |
| | 404 | Made of particular material |
| | 408 | Introduction, circulation, or removal of fluid |
| | 409 | Close proximity seal (e.g., contactless, fluent, etc.) |
