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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 277 | SEAL FOR A JOINT OR JUNCTURE |
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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) |
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