| 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.) |
| | 410 | Magnetic |
| | 411 | Gap or clearance |
| | 412 | Labyrinth |
| | 413 | Having adjustable member |
| | 414 | Formed by cellular pockets (e.g., honeycomb, etc.) |
| | 415 | Having wear resistant, abradable, or ablative member |
| | 416 | Segmented |
| | 417 | Formed by multiple washers |
| | 418 | Formed by plural grooves or projections on opposing surfaces |
| | 421 | Having installation, removal, assembly, disassembly, or repair feature |
| | 422 | Floating ring or bushing |
| | 423 | Impeller (e.g., slinger, etc.) |
| | 424 | Rib or groove on radial extending surface |
| | 425 | And static sealing means affected by rotational movement |
| | 427 | Forms centrifugal liquid barrier |
| | 429 | Fluid collector or receiver |
| | 430 | Helical groove or thread on axially extending surface |
| | 431 | Formed by pressurized sealing fluid introduced to form barrier |
| | 433 | Centrifugal force affects change in displacement, shape, or contact |
| | 434 | Piston ring or piston ring expander or seat therefor |
| | 435 | Having installation, removal assembly, disassembly, or repair feature |
| | 436 | Piston ring having peripheral radially sealing flexible projection (e.g., piston cup, etc.) |
| | 437 | Having particular mounting, retaining, or supporting feature |
| | 438 | Having C, U, or V cross-sectional profile |
| | 440 | Piston ring surface of dissimilar material or hardness |
| | 445 | Rotation limiting feature (i.e., antirotation) |
| | 447 | Floating piston ring |
| | 449 | Particular piston seat |
| | 450 | Helical form |
| | 451 | Stepped walls |
| | 452 | Oblique wall |
| | 455 | Arcuate wall |
| | 456 | Coating, treatment, or wall insert |
| | 457 | Having passageway for fluid return, pressure relief, or venting |
| | 458 | Piston ring having single piece noncircular or multiturn (e.g., helical, spiral, oblong, elliptical, polygonal, etc.) shape |
| | 459 | Piston ring including exposed port, slot, pocket, groove, channel, recess, or bevel |
| | 460 | Circumferential groove, channel, recess, or bevel |
| | 464 | Circumferentially spaced ports |
| | 465 | Circumferentially spaced slots, pockets, grooves, channels, recesses, or bevels |
| | 466 | Piston ring displays twisting or torsion |
| | 467 | Particular piston ring expander |
| | 468 | Separate and other than metal |
| | 469 | Bias limiting feature |
| | 470 | Adjustable loading feature |
| | 471 | Thermal expansion feature |
| | 472 | Annular expander nested in annular groove of the piston ring |
| | 473 | Between piston rings |
| | 474 | And contacting surfaces therebetween are complementary |
| | 476 | Inclined or beveled groove contacting expander having dissimilar contour |
| | 477 | Slotted or undulating circular band including inclined or axially facing seat for the piston ring |
| | 482 | Circumferentially spaced separately seated radially acting bias feature |
| | 484 | Radially extending tongue formed from expander |
| | 485 | Undulating periphery providing axially extending face against inner perimeter of the piston ring |
| | 486 | Bias feature adjoining opposed ends of split or segmented piston ring |
| | 487 | Segmented |
| | 488 | For axially adjacent piston rings |
| | 489 | Sectional piston ring structure |
| | 493 | Segmented piston ring |
| | 494 | Separate bridging piece for gap in piston ring |
| | 496 | Split single piece piston ring having opposed asymmetrical mirrored ends |
| | 498 | Split single piece piston ring having other than opposed asymmetrical mirrored ends |
| | 500 | Circumferential contact seal for other than piston |
| | 501 | And magnetic bias |
| | 502 | For valve stem in internal combustion engine |
| | 503 | Accommodates gyratory or oscillatory motion |
| | 504 | Flexible connection between seal and another part |
| | 505 | Oscillates perpendicularly to axis of motion |
| | 506 | Arcuate bearing surface |
| | 508 | Axially spring biased |
| | 510 | Contained or compressed by gland member in packing box |
| | 511 | Having installation, removal, assembly, disassembly, or repair feature |
| | 512 | Fluid introducer or director |
| | 513 | External device or system |
| | 514 | Drain, pressure relief, or vent |
| | 515 | Passage through axial facing surface |
| | 516 | Spacer between seals (e.g., lantern ring, etc.) |
| | 517 | Between packing boxes |
| | 518 | Plural distinct packing boxes |
| | 519 | Segmented packing boxes |
| | 520 | Particular gland feature |
| | 521 | Segmented |
| | 522 | Spring bias |
| | 524 | Eye or T-type bolt |
| | 525 | Internally threaded |
| | 526 | Externally threaded |
| | 527 | Wear sleeve |
| | 528 | Helically coiled packing |
| | 529 | Having particular cross-sectional seal profile |
| | 534 | Particular seal material or construction |
| | 542 | Consisting of loose-fill type packing |
| | 543 | Segmented ring |
| | 544 | Having pressure balancing or radial bias reduction feature |
| | 545 | Radial biasing spring element other than nominal garter spring |
| | 546 | Particular segment end structure |
| | 548 | Plural complementary interfitting rings |
| | 549 | Peripheral radially sealing flexible projection (e.g., lip seal, etc.) |
| | 550 | Made of metal or is a scraper |
| | 551 | Having installation, removal, assembly, disassembly, or repair feature |
| | 552 | Having pressure relief or venting feature |
| | 553 | Bias feature other than nominal garter spring |
| | 554 | Embedded spring |
| | 555 | Radially extending finger spring |
| | 556 | Material other than metal |
| | 557 | Axially extending helical or spiral spring |
| | 558 | Particular fluid pressure responsive bias |
| | 559 | Hydrodynamic sealing feature |
| | 560 | Dimensional aspect of the flexible projection (e.g., angle, length, radius, thickness, etc.) |
| | 561 | Intermediate flexible bending portion |
| | 562 | Plural peripheral radially sealing flexible projections |
| | 563 | Having interposed fluid receiver or director |
| | 564 | Having insert between the flexible projections |
| | 565 | On radial facing side of single seal |
| | 569 | Lining or insert |
| | 570 | Made entirely of fluorocarbon material |
| | 571 | Wear sleeve |
| | 572 | Particular mounting, frame, casing, or reinforcement feature |
| | 578 | Having circumferentially adjustable biasing element |
| | 579 | Having floating ring or bushing (i.e., circumferentially contacting) |
| | 580 | Radially translatable in groove |
| | 582 | Made of elastomer or plastic |
| | 583 | Inflatable seal or seal biased by inflatable member |
| | 584 | Extrusion preventing (i.e., antiextrusion) structure |
| | 585 | Elongated sleeve or bushing |
| | 586 | Seated in groove having stepped walls |
| | 587 | Seated in groove having oblique wall |
| | 589 | Radially backed by resilient or elastomeric member |
| | 590 | SEAL BETWEEN FIXED PARTS OR STATIC CONTACT AGAINST RELATIVELY MOVABLE PARTS |
| | 591 | Contact seal between parts of internal combustion engine |
| | 592 | Particular coating or layer of sealing material |
| | 593 | Having compression limiting feature |
| | 594 | Particular dimensions or configuration of sealing bead or formation |
| | 597 | Heat dissipating, cooling, or insulating feature |
| | 598 | Having installation, removal, assembly, disassembly, or repair feature |
| | 599 | Having flow restrictor |
| | 600 | Covering member or eyelet for opening |
| | 602 | Contact seal for a pipe, conduit, or cable |
| | 603 | Plural interfitting seal members for installation on the individual joined pipes, conduits, or cables |
| | 604 | Allows rolling or folding |
| | 605 | Hollow, fluid-filled, or inflatable |
| | 606 | And wall |
| | 607 | Sleeve type |
| | 608 | Inserted between end-to-end pipe, conduit, or cable joint |
| | 609 | Having installation, removal, assembly, disassembly, or repair feature |
| | 610 | Spirally wound structure |
| | 611 | Extrusion preventing (i.e., antiextrusion) or compression limiting feature |
| | 612 | Having plural projections |
| | 613 | Hose coupling |
| | 614 | Each end has recess for the seal |
| | 615 | Having axially spaced projections |
| | 616 | Having associated mounting or retaining feature |
| | 617 | Molded or cast into the pipe, conduit, or cable |
| | 618 | Axially related or embedded coil spring |
| | 619 | Axially related backing ring |
| | 625 | Particular and located on the pipe, conduit, or cable |
| | 626 | Particular seal shape |
| | 627 | Particular seal material or construction |
| | 628 | Contact seal for other than internal combustion engine, or pipe, conduit, or cable |
| | 629 | Magnetic |
| | 630 | Having installation, removal, assembly, disassembly, or repair feature |
| | 631 | Split including end joining structure |
| | 632 | Segmented periphery |
| | 633 | Spirally wound structure |
| | 634 | Flexible sleeve, boot, or diaphragm |
| | 635 | Dome-, cup-, or bell-shaped, or for ball joint |
| | 636 | Tubular or frustoconical shape having corrugated wall portion |
| | 637 | Having particular associated mounting or retaining feature |
| | 638 | Extrusion preventing (i.e., antiextrusion) structure |
| | 639 | Compression limiting feature |
| | 640 | Anchoring feature extending through seal |
| | 641 | Groove structure on the seal or part |
| | 644 | Particular cross-sectional seal profile |
| | 650 | Particular sealing material or construction |
| CROSS-REFERENCE ART COLLECTIONS | ||
| | 902 | SEAL FOR STERLING ENGINE |
| | 903 | SEAL FOR ROTATING KILN OR DRUM |
| | 904 | VISCOUS SEAL |
| | 905 | T-SHAPED OR I-SHAPED RING MEMBER INCLUDING SEAL ON A SIDE |
| | 906 | SEAL FOR ARTICLE OF INDEFINITE LENGTH (E.G., STRIP, SHEET, ETC.) |
| | 907 | PASSAGEWAY IN ROD OR SHAFT |
| | 908 | SEAL FOR USE IN ROTATING AND RECIPROCATING ARRANGEMENT |
| | 909 | SIMILAR SEALING STRUCTURES FOR MOUNTING ON PISTON AND ABOUT ROD |
| | 910 | O-RING SEAL |
| | 911 | SEAL COMBINED WITH NOMINAL MOTION TRANSMITTING DEVICE |
| | 913 | SEAL FOR FLUID PRESSURE BELOW ATMOSPHERIC (E.G., VACUUM, ETC.) |
| | 914 | BACKUP SEAL FOR FAILURE OF PRIMARY SEAL |
| | 915 | SEAL INCLUDING COMPRESSION SET FEATURE |
| | 916 | SEAL INCLUDING VIBRATION DAMPENING FEATURE |
| | 917 | SEAL INCLUDING FRANGIBLE FEATURE |
| | 918 | SEAL COMBINED WITH FILTER OR FLUID SEPARATOR |
| | 919 | SEAL INCLUDING ELECTRICAL FEATURE |
| | 920 | SEAL INCLUDING ELECTROMAGNETIC SHIELDING FEATURE |
| | 921 | CLOSURE OR WEATHER STRIP SEAL |
| | 922 | BONDING OR JOINING FOR MANUFACTURE OF SEAL |
| | 924 | DEFORMATION, MATERIAL REMOVAL, OR MOLDING FOR MANUFACTURE OF SEAL |
| | 925 | SNAP FIT FEATURE FOR MOUNTING OR ASSEMBLY OF SEAL |
| | 926 | SEAL INCLUDING FLUID PRESSURE EQUALIZING OR BALANCING FEATURE |
| | 927 | SEAL INCLUDING FLUID PRESSURE DIFFERENTIAL FEATURE |
| | 928 | SEAL INCLUDING PRESSURE RELIEF OR VENT FEATURE |
| | 929 | SEAL FEATURE WHERE CHANGE IN OPERATION OR CONDITION INDUCES ADDITIONAL LEAKAGE CONTROL |
| | 930 | SEAL INCLUDING HEATING OR COOLING FEATURE |
| | 931 | SEAL INCLUDING TEMPERATURE RESPONSIVE FEATURE |
| | 934 | SEAL SWELLS WHEN WET |
| | 935 | SEAL MADE OF A PARTICULAR MATERIAL |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
| Any foreign patents or non-patent literature from subclasses that have been reclassified have been transferred directly to FOR Collections listed below. These Collections contain ONLY foreign patents or non-patent literature. The parenthetical references in the Collection titles refer to the abolished subclasses from which these Collections were derived. | ||
| FOR100 | RADIALLY CONTAINED PACKING WITH AXIALLY ACTING FOLLOWER (277/102) |
| FOR101 | Piston (277/103) |
| FOR102 | Sectional follower (277/104) |
| FOR103 | Bolted flange (277/105) |
| FOR105 | With operating handle (277/107) |
| FOR106 | With tool engaging means (277/108) |
| FOR107 | Weight actuated (277/109) |
| FOR108 | Screw thimble (277/110) |
| FOR110 | Screw (277/112) |
| FOR111 | With operating mechanism (277/113) |
| FOR112 | Unidirectional movement (277/114) |
| FOR113 | Tapered follower or box (277/115) |
| FOR115 | Axially related backup member raidally actuated by movement of follower (277/116.2) |
| FOR116 | Telescoping actuator (277/116.4) |
| FOR119 | Wedging surfaces (277/117) |
| FOR125 | Plural packing elements (277/123) |
| FOR128 | EXTERNALLY OPERATED ADJUSTMENT (277/126) |
| FOR129 | Fluid motor (277/127) |
| FOR130 | Circumferential band (277/128) |
| FOR131 | Acting along radius (277/129) |
| FOR132 | LATERAL ACCESS TO PACKING BOX (277/130) |
| FOR135 | IMPELLER TYPE (277/133) |
| FOR137 | LIQUID BARRIER (277/135) |
| FOR138 | WITH ANTIROTATION KEY OR ANCHOR (277/136) |
| FOR140 | WITH DISTINCT RADIALLY ACTING BIAS(277/138) |
| FOR141 | Unitary packing spacer and bias means (277/139) |
| FOR143 | Common bias for axially spaced packings (277/141) |
| FOR144 | With axially acting bias means (277/142) |
| FOR145 | With axially component (277/143) |
| FOR148 | With bias restrainer (277/146) |
| FOR149 | With adjustable loading means (277/147) |
| FOR150 | Individually biased segments (277/148) |
| FOR151 | Circumferentially spaced radially acting springs (277/149) |
| FOR153 | Circumferential thrust (277/151) |
| FOR154 | Axial lip or boss (277/152) |
| FOR156 | Interfitted segments (277/154) |
| FOR157 | With bridging segments (277/155) |
| FOR158 | Break joint (277/156) |
| FOR159 | Periphery engaging spring (277/157) |
| FOR160 | Incompatible shapes (277/158) |
| FOR161 | Radially extending tongues (277/159) |
| FOR162 | Wave or undulate (277/160) |
| FOR163 | Polygonal (277/161) |
| FOR164 | Open-end (277/162) |
| FOR165 | Spiral (277/163) |
| FOR166 | Embedded or enclosed spring (277/164) |
| FOR167 | Nonmetallic (277/165) |
| FOR168 | ANCHOR EXTENDING THROUGH OR INTERFITTED WITH PACKING (277/166) |
| FOR169 | HELICAL SEAT (277/167) |
| FOR170 | SERIALLY ARRANGED, SEPARATELY SEATED OR ANCHORED PACKING MEMBERS (277/167.3) |
| FOR171 | SINGLE SEAT FORMED BY OPPOSED RECESSES IN PLURAL MEMBERS (277/167.5) |
| FOR172 | LATITUDINALLY STEPPED OR TAPERED SEAT (277/168) |
| FOR177 | FLOATING PACKING MEMBER (277/173) |
| FOR178 | Radially translatable (277/174) |
| FOR180 | Additional member (277/176) |
| FOR181 | Elastomeric (277/177) |
| FOR182 | INTERFITTING WITH RADIALLY PROJECTING FLANGE (277/178) |
| FOR183 | EMBEDDED REENFORCEMENT OPPOSING TAPERED MOUNTED SURFACE (277/179) |
| FOR184 | WITH COMPRESSION STOP (277/180) |
| FOR185 | PACKING ATTACHED RETAINER (277/181) |
| FOR186 | Peripheral shell (277/182) |
| FOR189 | Plural at axially opposed ends (277/185) |
| FOR190 | Resilient (277/186) |
| FOR191 | PACKING CHAMBER OR SEAT WITH SEPARABLE END WALL (277/187) |
| FOR192 | WITH AXIALLY RELATED BACKING OR RETAINING MEMBER (277/188 R) |
| FOR194 | WITH ANCHOR OR RETAINER (277/189) |
| FOR195 | COMPOSITE SEAT (277/189.5) |
| FOR196 | WEDGING PORTIONS (277/190) |
| FOR198 | SEGMENTAL (277/192) |
| FOR199 | Axially related segments (277/193) |
| FOR200 | L-shaped (277/194) |
| FOR201 | With radially related segment (277/195) |
| FOR202 | Coiled or corrugated segment (277/196) |
| FOR203 | Diametrically opposed splits (277/197) |
| FOR204 | Concentric segments (277/198) |
| FOR205 | Interfitting segments (277/199) |
| FOR206 | AXIALLY SPACED FLANGES WITH CORRUGATED CONNECTING WEB (277/200) |
| FOR207 | ANNULUS WITH DUCT OR PASSAGEWAY (277/201) |
| FOR209 | HELICAL (277/203) |
| FOR210 | VOLUTE (277/204) |
| FOR211 | FLEXIBLE U- OR V-CUP (277/205) |
| FOR214 | RIBBED CONTACT SURFACE (277/207 R) |
| FOR215 | Axially spaced (277/208) |
| FOR218 | Opposite surfaces (277/211) |
| FOR219 | Pipe joints or connections (277/207 A) |
| FOR220 | FLEXIBLE CUP OR FLANGE TYP(277/212R) |
| FOR224 | CORRUGATED CONTACT SURFACE (277/213) |
| FOR225 | CIRCUMFERENTIAL GROOVE IN PERIPHERAL SURFACE (277/214) |
| FOR226 | WITH SPACED POCKETS, GROOVES, OR RECESSES (277/215) |
| FOR227 | SPLIT ANNULUS (227/216) |
| FOR228 | Variable radius (277/217) |
| FOR229 | With separate gap or bridging piece (277/218) |
| FOR231 | With joining structure (277/220) |
| FOR234 | With insert (277/223) |
| FOR236 | WITH INTERMEDIATE RADIAL PERIPHERAL FLANGE (277/225) |
| FOR237 | FLUENT OR VACUUM CORE (277/226) |
| FOR238 | COMPOSITE (277/227) |
| FOR239 | Elastomeric core (277/228) |
| FOR240 | Distinct sheath (277/229) |
| FOR242 | Reentrant contact surface (277/231) |
| FOR244 | Plural planar or conical plies (277/233) |
| FOR246 | Including metal (277/235 R) |
| FOR249 | METALLIC (277/236) |
| FOR250 | MISCELLANEOUS (277/237 R) |