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| Number | Title | Issue Date |
| 7159871 | Retrofittable severe duty seal for a shaft A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contact... | 01/09/2007 |
| 7100924 | Elastomeric hinged seal A hydrodynamic PTFE seal for a rotating part including a first portion supported by a flexible, elastomeric member and a second portion extending from the first portion past the elastomeric member along the rotating part. The second or trailing portion of the seal i... | 09/05/2006 |
| 7066471 | Lip-type shaft seal A lip-type shaft seal is made of elastic material with a Shore A hardness of ≦75, includes a radial sealing lip, which has a sealing edge to bear against a rotating component and terminates in a axial sealing lip, which has a sealing edge to rests in installed sta... | 06/27/2006 |
| 7055828 | Shaft seal A lubricant seal assembly has an outer seal component and a separate inner wear sleeve. The outer seal component has a carrier and a PTFE seal element which lays down against the wear sleeve to provide a seal collar extending to an oil side of the seal assembly. The... | 06/06/2006 |
| 7037126 | Rotary joint for fluid electricity The present invention is directed to a rotary joint that includes a power slip ring and an electric signal slip ring, both for passing electricity between a stator and a rotor The system includes a plurality of slip rings (21,31) and a plurality of circumfere... | 05/02/2006 |
| 6966558 | Sealing device for rolling bearing A sealing device for a rolling bearing includes: a seal mounting groove formed to a shoulder of a raceway groove of a fixed ring; a circumferential step formed to a shoulder of the raceway groove of the rotational ring; and an annular resilient sealing member fit in... | 11/22/2005 |
| 6921082 | Lip sealing ring A lip sealing ring for a relatively movable machine element (1), including a flexible sealing lip (2) made of polymeric material which adjacently encloses the machine element (1) in the region of a sealing gap (3) under elastic prestressi... | 07/26/2005 |
| 6676132 | Seal and rotary assembly using the seal The object of the present invention is to improve sealing performance of a seal under a specific environment. The seal is arranged in an annular space A in which a rotary shaft 1 and a housing 2 face each other, and partitions the annular space in axial d... | 01/13/2004 |
| 6481721 | Method and apparatus for overcladding a glass rod A method and apparatus for maintaining the pressure in an overclad tube at a reduced level despite axial movement of the tube during performance of an RIT overcladding operation. The overcladding tube is held by means of the lathe chuck, and a tubular ext... | 11/19/2002 |
| 6336638 | Radial shaft seal A radial shaft seal with a sealing disk made of a polymer material which curves towards a space that is sealed as the sealing disk radially approaches a shaft with respect to which it forms a seal. The sealing disk has a first surface profiling on the sid... | 01/08/2002 |
| 6334615 | Seal for rolling bearing The present invention provides a seal for rolling bearings having improved sealing properties, undergoing no separation between a core and a peripheral portion nor deformation even in long-term use. The seal comprises a flexible resin portion which comes ... | 01/01/2002 |
| 6149158 | Unitized oil seal with PTFE sealing disk split at radially outer edge and method of manufacture A unitized oil seal assembly (20, 220, 320,420) has a sealing disk (34, 234, 334, 434) fabricated of a single water of PTFE-based material that is split along its radially outer edge to define a pair of split sections, one of which (48, 248, 348, 438) is ... | 11/21/2000 |
| 6139023 | Seal for movable structural components A seal for movable structural components, like piston rods or shafts, includes a carrier body made of thermoplastic material and a sealing member locked to said carrier body and made of polytetrafluoroethylene (PTFE) material. A form-lock connection is ac... | 10/31/2000 |
| 6079715 | Rotary shaft seal having a PTFE seal lip and a method and apparatus of manufacturing same A rotary shaft seal having an elastomer seat for fitting into the bore of a hub or for the attachment onto a shaft comprises a seal washer, connected to a metal enforcement ring through a elastomer intermediate layer. The elastomer intermediate layer cons... | 06/27/2000 |
| 6027123 | Tank piston with improved seal and wiper A tank piston is shown with an improved seal and wiper. The piston is used in conjunction with tanks used for transporting semi-solid and viscous materials such as grease, oil, ink, and the like. The improved seal consists of an annular rubber member with... | 02/22/2000 |
| 5984316 | Rotary reciprocating seals with internal metal band A seal assembly is provided for static, rotary and reciprocating sealing between the shaft and the housing. The seal assembly includes a ring seal in the shape of an annulus having a body portion with an inside flange and an outside flange extending longi... | 11/16/1999 |
| 5673919 | Sealing arrangement with elastomeric sleeve and surrounding receptacle supported by separate housing shoulders A sealing arrangement for an actuator, in particular a valve stem, that is movably mounted in a housing, includes a single-piece, profiled seal body which encircles the actuator in form of a sleeve. The seal body bears upon the actuator under bias and has... | 10/07/1997 |
| 5630591 | Sealing element Sealing element consisting of a body with at least one synthetic sealing lip provided to it. This synthetic sealing lip is pressed against the part that moves in relation to the part in which the body is provided. This pressure is realized with the aid of... | 05/20/1997 |
| 5615894 | Shaft seal ring and a method and a device of manufacturing same A shaft seal ring as well as a method and a device of manufacturing same. A shaft seal ring made of a PTFE compound comprises a sealing lip and a protective lip integrally formed therewith, wherein the sealing lip as well as the protective lip are provided wit... | 04/01/1997 |
| 5607168 | Seal incorporating a resilient sealing element A shaft seal includes a case defining an axial portion and a radial portion, and a resilient PTFE sealing member is secured to the case by an elastomeric material, such as rubber, in an injection molding process. The elastomeric material forms an outer ri... | 03/04/1997 |
| 5577741 | Combination lip and sleeve seal and its method of manufacture A combined lip and sleeve seal for use with a generally cylindrical surface relatively rotating shaft is formed by a molding operation and includes a sleeve seal portion for contacting and forming a first oil seal with the shaft and an integrally joined r... | 11/26/1996 |
| 5553866 | Cartridge-type lip seal with removable spacer A seal assembly for use in providing a dynamic fluid seal between a relatively rotating housing and shaft. The seal assembly eliminates the need for either a fixed internal thrust bearing or seal assembly contact with an adjacent inner bearing race. The s... | 09/10/1996 |
| 5462287 | Method for the manufacture of a shaft seal A seal for sealing the end of a shaft passing out of the end wall of a casing, as well as for sealing the end wall, is characterized in that a gasket receptacle is manufactured as a light metal pressure die casting, that a polytetrafluoroethylene sealing ... | 10/31/1995 |
| 5380015 | Machined shaft seal encased in an elastomeric sleeve A manually assembled shaft seal assembly includes a plastic sealing element having an annular tubular mounting portion and a shaft-engaging sealing lip. An annular elastomeric sleeve extends around the inner and outer surfaces of the tubular mounting port... | 01/10/1995 |
| 5364111 | Sealing arrangement Proposed is a sealing arrangement for shafts with very small diameters, with an essentially U-shaped lip seal (6) subjected to the force of an axially acting helical compression spring (9). The two sealing lips (6.1 and 6.2) of the lip seal (6) are by thr... | 11/15/1994 |
| 5350181 | Pumping feature on wear sleeve for unitized seal A fluid seal assembly with a primary seal element and a wear sleeve element. The primary seal includes a casing and a seal element that contacts a sealing surface on the wear sleeve. The wear sleeve has a cylindrical portion that overlies a portion of the... | 09/27/1994 |
| 5340125 | Gasket for radially spaced pipes A gasket including a main body of circular shape having both inwardly and outwardly directed lips for sealing engagement with the radially spaced pipes of an irrigation system. System water pressure directly biases certain of the lips towards pipe engagem... | 08/23/1994 |
| 5326111 | Separately bonded elastomeric sleeve for seal casing A shaft seal includes an annular rigid seal case insertable into a cylindrical bore in a seal housing. The joint between the seal case and the bore is sealed by an annular resilient sleeve stretched over the outer surface of the case. The sleeve is initia... | 07/05/1994 |
| 5209499 | Unitized polytetrafluoroethylene radial lip seal A unitized radial lip seal assembly includes an outer annular case and an inner annular wear sleeve loosely interlocked by flanges or walls formed at the axial ends of the wear sleeve. After initial installation of the unitized assembly within a housing, ... | 05/11/1993 |
| 5209502 | Dual lip seal and method of forming the seal A dual lip shaft seal includes two sealing disks bonded directly to a radial wall of an annular metal case. The radial wall has an annular step, such that two separate mounting surfaces are formed for mounting the two disks. Each sealing disk is preferabl... | 05/11/1993 |
| 5207436 | Low friction unitized seal A unitized seal incorporates two nested steel casing, a PTFE disk with two edges in sealing contact with one casing, and an elastomer seal with two lips in sealing contact with the back of the PTFE disk. The PTFE disk provides two primary, low friction se... | 05/04/1993 |
| 5144882 | Shaft seal system for a piston pump separating impurities A piston pump shaft sealing system is provided which prevents particles released from the shaft seal, as a result of wear from entering and contaminating the fluid being pumped. The system features a permeable, deformable disc disposed between the seal an... | 09/08/1992 |
| 5125672 | Shaft sealing arrangements The present invention provides a sealing arrangement for effecting a seal with a rotatable shaft having with respect to its longitudinal axis a generally cylindrical shape but with a portion thereof of conical shape, which comprises a shaft seal positione... | 06/30/1992 |
| 5106565 | Method for manufacturing hermetically sealing apparatus for sealing two members which rotate relative to each other A hermetically sealing apparatus comprises: a first seal ring made of a rubber-like resilient material and adapted to seal two members which rotate relative to each other; a second seal ring made of a resin and disposed adjacent to the first seal ring on ... | 04/21/1992 |
| 5082295 | Piston or rod seal A piston or rod seal comprising a scraper ring 2 which is made of a PTFE material and supported in a first groove 1 open toward the relatively moving machine part. This ring is pressed against the relatively moving machine part 5 by an O-ring 4 made of an... | 01/21/1992 |
| 5052696 | Compact compressor seal A shaft seal having a thin radial section is adapted for mounting within a small radial annular clearance space between a housing and a shaft. An elastomeric sealing member is bonded to an axially inner portion of the seal and a polytetrafluoroethylene se... | 10/01/1991 |
| 5039112 | Multi-layer lip seal assembly A multi-layer radial lip seal assembly adapted to be retained to the housing of an automotive air conditioning compressor and to be disposed about a rotatable shaft extending through a chamber provided in the housing. The lip seal assembly includes a firs... | 08/13/1991 |
| 4984812 | Oil seal assembly An oil seal assembly includes an oil seal having a lip contacting the outer peripheral surface of a reciprocating shaft, a holder for holding the oil seal about the shaft, and an annular spring for urging the lip against the outer peripheral surface of th... | 01/15/1991 |
| 4969653 | Radial lip oil seal A shaft seal includes a rigid case and an elastomeric seal body affixed thereto. The seal body member includes a primary sealing lip and a secondary sealing lip axially spaced from one another by an intermediate flex section. The sealing surfaces of both ... | 11/13/1990 |
| 4850601 | Seal The invention relates to a seal, consisting of an elastomer shaped ring, which is to be pushed onto a cylindrical circumferential surface and supports itself on the latter by a radially acting sealing surface, with an embedded inner ring, consisting of a ... | 07/25/1989 |
