Resilient Sliding Surface Material Patents (Class 384/482)
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Patent number: 4968044Abstract: A rotary facial seal and a thrust bearing are adapted to be installed between inner and outer concentric relatively movable members, such as, the spindle housing and axle of a motor vehicle, the facial seal having an annular diaphragm made up of an inner seating portion mounted on the axle, an outer sealing lip tapering away from a hinged section in a seal body to engage a radial wall of the housing, and an intermediate resilient wall section between the seal lip and seating portion to yieldingly urge the sealing lip into a thin band of contact with the radial wall under the biasing action of the intermediate wall section; and the thrust bearing includes a bearing member which is installed at the inner bore of the spindle housing and is freely rotatable with respect to the spindle housing when engaged by the end of the shaft and inner seating portion of the facial seal.Type: GrantFiled: December 12, 1988Date of Patent: November 6, 1990Assignee: P and C Engineering and DevelopmentInventor: Gregory H. Petrak
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Patent number: 4948271Abstract: A tapered roller bearing having an inner ring and an outer ring, each respectively having a tapered race, a plurality of tapered rollers, a cage which retains the tapered rollers at an even interval in the circumferential direction and first and second seals. The first seal has a lip and main element, the main element having mounted on the small diameter end portion of the inner ring, and the lip being forced in the axial outward direction of the bearing against the outer ring, and separated from the outer ring when forced in the inward axial direction. The second seak has a lip and main element, the main element mounted on the large diameter end portion of the inner ring, and the lip forced in the axial inward direction of the bearing against the outer ring, and separated from the outer ring when forced in the axial outward direction. The lips of the first seal and second seal are moved and separated from the outer ring, thus creating a clearance, by a force acting in the same direction.Type: GrantFiled: November 15, 1989Date of Patent: August 14, 1990Assignee: Koyo Seiko Co., Ltd.Inventors: Masao Nunotani, Masaaki Matsumoto
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Patent number: 4940340Abstract: A bearing seal device seals the end of a ball bearing mechanism having an inner race engaging a cylindrical shaft, a plurality of balls, and an outer race. A flat elastic sealing ring abutts the inner race, which is inset, and bears against a sealing surface of the outer race. A circumferential seal engages and forms a seal on the shaft and abutts and forms a seal with the sealing ring. A bias means presses the circumferential seal against the sealing ring, which is deformed into a cup shape, and forms a seal with the sealing surface of the outer race.Type: GrantFiled: January 10, 1990Date of Patent: July 10, 1990Inventor: Roger O. Durham
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Patent number: 4932796Abstract: Sealing device for a thrust bearing has a pair of bearing disks, including a pair of sealing collars (4, 5, 33, 34), and one of the collars being permanently seated on one of the bearing disks and the other collar being free to rotate on the other disk. The sealing collars (4, 5, 33, 34) are provided with integral sealing lips (29), which rest preferably against the facing end surfaces (30, 30a) of the bearing disks (1, 2).Type: GrantFiled: May 5, 1989Date of Patent: June 12, 1990Assignee: SKF GmbHInventors: Rainer Schurger, Heinz Peter
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Patent number: 4921362Abstract: The present invention provides a bearing assembly for use in a display assembly having a plurality of louvers which rotate in synchronism with each other and, in doing, displays different advertising messages. The bearing assembly includes a housing having an axis and a shaft extending axially through the housing. A pair of axially spaced bearings rotatably mount the shaft to the housing. A pair of collars are secured to the shaft so that the bearings are contained in between the collars while a Belleville washer is sandwiched between one collar and one bearing and exerts a compressive force on the bearings and a tension force on the shaft in order to compensate for bearing wear and manufacturing tolerances. A seal is secured to and rotates with the shaft. The seal includes an outer annular lip which extends over one end of the bearing housing to prevent contaminants from entering the bearing housing.Type: GrantFiled: October 24, 1988Date of Patent: May 1, 1990Inventor: Willy Werner
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Patent number: 4919551Abstract: A tapered roller bearing having an inner ring and an outer ring, each respectively having of a tapered race, a plurality of tapered rollers, a cage which retains the tapered rollers at an even interval in the circumferential direction, and first and second seals. The first seal has a lip and main element, the main element being mounted on the small diameter end portion of the inner ring, and the lip being forced in the axial outward direction of the bearing against the outer ring, and separated from said outer ring when forced in the inward axial direction. The second seal has a lip and main element, the main element mounted on the large diameter end portion of the inner ring, and the lip forced in the axial inward direction of the bearing against the outer ring, and separated from said outer ring when forced in the axial outward direction. The lips of the first seal and second seal are moved and separated from the outer ring, thus creating a clearance, by a force acting in the same direction.Type: GrantFiled: January 26, 1989Date of Patent: April 24, 1990Assignee: Koyo Seiko Co., Ltd.Inventors: Masao Nunotani, Masaaki Matsumoto
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Patent number: 4913450Abstract: The invention refers to a seal for bearing spaces, wall channels for shafts and the like, where the seal is fitted to the shaft. The seal is characterized in that it incorporates a sheet metal strutting projecting radially outwards, and on the side facing away from the space intended to be sealed off being equipped with mainly radially extending vanes, the radial extension of which mainly coincide with the radial extension of the sheet metal strutting.Type: GrantFiled: June 1, 1989Date of Patent: April 3, 1990Assignee: SKF Nova ABInventor: Sture Asberg
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Patent number: 4886437Abstract: A bearing arrangement of an external axial rotary piston blower for gaseous medium having a housing which consists of an interior runaway surface and two side parts through which shafts project upon which pistons rotating therewith form working chambers. The shafts of these pistons have ball bearings with lip flap or face seals for sealing-off of gas pressure in the working chambers as well as externally of these bearings having transmission gears journalled with respect to the side parts. Bearing necks or collars are formed and provided with the ball bearings for the shafts of the pistons and these annular grooves are open extending radially outwardly. Groove walls on the transmission side along with inner edges of the gear rings of the gears of the transmission form an annular gap of closest narrow tolerance. A further annular gap can be provided between the bores for the shafts and the bearing necks and the hubs of the gears of the transmission.Type: GrantFiled: October 28, 1988Date of Patent: December 12, 1989Assignee: Wankel GmbHInventor: Werner Schubert
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Patent number: 4875786Abstract: A carrier ring member is disclosed for holding one or more sealing devices in sealing engagement between a shaft and a bearing block, and having a snap-ring for maintaining the carrier member within the block. The snap-ring is held in its flexed condition to permit insertion of the carrier member within the block by a pin releasably retained on the ring when flexed and releases the free ends when manually pulled out of the member allowing the ring to assume its normal unflexed condition.Type: GrantFiled: December 29, 1988Date of Patent: October 24, 1989Assignee: Reliance Electric CompanyInventor: Gary DeWachter
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Patent number: 4865471Abstract: A seal assembly for rolling bearing is comprised of: an inner race ring (3) of the rolling bearing which is formed in each of its external peripheral side faces with a stepped portion which consists of a first stepped section (4) having side and peripheral faces (41 and (42) thereof, and a second stepped section (5) located radially inwardly and axially outwardly of the first stepped section (4) and having side and peripheral faces (51 and 52) of itself; and, an outer race ring (1) of the rolling bearing which is provided on each of its side portions with an annular sealing member (7), each of said annular sealing member (7) has its outer peripheral portion fixed on the inner periphery of the outer race ring (1), and the inner peripheral portion of each annular sealing member (7) includes a seal lip (9) having an annular projection (10) which is formed on the internal side face of the inner peripheral portion of the seal lip (9), each of said annular projection (10) is held in contact with said side face (51)Type: GrantFiled: November 17, 1988Date of Patent: September 12, 1989Assignee: Koyo Seiko Co., Ltd.Inventor: Hiroyuki Miyazaki
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Patent number: 4863292Abstract: A seal, particularly for antifriction bearings, which includes two facing L-shaped, rigid sheet metal parts. The axially directed arm of each sealing part, has on its radially outer surface, a thin elastic covering layer which is scraped off over part of its axial length during assembly of the seal into the space between the bearing rings. The scraped off part of the covering is stored in a groove in the interior of the adjacent bearing ring. Two of the L-shaped parts are provided and their open sides face toward each other. Sealing lips seal the space between them.Type: GrantFiled: January 23, 1989Date of Patent: September 5, 1989Assignee: FAG Kugelfischer Georg Schafer (KGaA)Inventors: Peter Dreschmann, Erich Warmuth
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Patent number: 4863293Abstract: A sealed bearing assembly including an inner race, an outer race, and a plurality of balls forming therewith a bearing, a pair of closure members along the sides thereof, and a pair of identical annular seals positioned between the bearing and the closure members, is constructed such that an annular pocket is formed by the seals about the rolling elements. The seals act to confine lubricating material within the pocket to only the specific volume where it is needed. The seals not only preclude seepage of the lubricating material, but also facilitate the economical use of modern greases.Type: GrantFiled: September 15, 1988Date of Patent: September 5, 1989Assignee: Frost Inc.Inventor: Frederick R. Sytsma
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Patent number: 4854749Abstract: A bearing seal device for a bearing having inner and outer rings, the inner ring including an outer surface, and rolling elements disposed between the rings, comprises annular seal having an outer periphery fixed at the outer end of the outer ring, and an inner periphery extending towards the inner ring and including a bifurcated lip; and a groove in the outer surface of the inner ring for receiving the bifurcated lip, the groove including a bottom side wall, and inner and outer side walls of substantially the same height for reducing grease leakage from the bearing and reducing resistance of the seal.Type: GrantFiled: February 14, 1989Date of Patent: August 8, 1989Assignee: Koyo Seiko Co., Ltd.Inventors: Minoru Kohigashi, Toshihiko Shiraki, Akito Tsujimoto
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Patent number: 4852890Abstract: A bearing isolator seal having a shaft seal assembly that includes a stator housing having an inner radially extending face with a pair of spaced concentric annular flanges of substantially frusto-conical shape extending from a larger diameter end that is fixed to the inner radially extending face to a smaller diameter free end, and a rotor having a peripherally extending radial flange that is fixed to a hub of the rotor and has a contact sealing surface that contacts the free end of the annular flanges of the stator housing.Type: GrantFiled: May 3, 1988Date of Patent: August 1, 1989Assignee: Garlock Inc.Inventor: Richard Borowski
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Patent number: 4848776Abstract: A seal assembly (22 or 50) including a primary seal (26), an exclusion seal (28 or 52), and a contaminant absorbing material (30 or 54). The exclusion seal and absorbing material extend the life of the primary seal. The exclusion seal is of the face seal type and includes spacer means (40, 42, 38 or 62, 64, 56) for proper positioning of a sealing lip (34d or 60a) of an elastomeric seal member (34 or 60) relative to an axial facing sealing surface (36a or 58c). The absorbing material (30 or 54) is disposed between the exclusion seal and the primary seal for absorbing contaminants which get by the exclusion seal. The axially facing sealing surface (36a or 58c) may be defined by a frustonconical surface such as provided by a spring washer (44). The seal assembly (50) includes circumferentially, radially spaced vanes (62d) for centrifuging contaminants radially outward and into the absorbing material.Type: GrantFiled: April 27, 1987Date of Patent: July 18, 1989Assignee: Eaton CorporationInventor: Peter S. Winckler
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Patent number: 4838402Abstract: A sliding sleeve of a clutch of an automotive vehicle or the like, includes a radially adjustable anti-friction bearing. A cap supported on the sleeve extends around and is spaced from the bearing thereby defining a radial slot. A generally L-shaped spring ring has one leg which extends over the radial outside of the outer ring and is obliquely inclined outwardly so that its end engages the interior of a cap. The other leg of the spring ring extends radially inward past the axial outer end of the outer ring, is formed locked to the outer ring, and includes a sealing lip portion which extends into engagement with the surface of the inner ring for sealing the space between the outer and inner rings. The inner ring has a radially outward flange, and the sealing lip on the other leg of the spring ring engages the axially inward face of the radially projecting flange of the inner ring.Type: GrantFiled: February 25, 1988Date of Patent: June 13, 1989Assignee: FAG Kugelfischer Georg Schafer (KGaA)Inventor: Winfried Feser
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Patent number: 4832511Abstract: A seal system for a bearing having a housing with a chamber therein for receiving a shaft supported by a bearing assembly therein. The sealing system includes three and preferably four seal devices integrally related by means of a seal ring detachably retained within an exterior chamber of the housing. One of the seal devices is in the form a V-ring which has its flexible lip held in sealing engagement with a surface of the housing by the positioning of the ring in its operating condition. Another seal device in the form of a quad-ring, O-ring or the like is mounted in a groove in the ring and is held tightly fixed upon the shaft. The rotation of the seal ring provides a third seal device by being adapted to fling moisture and contaminants which may run along the shaft during rotation thereof. The fourth seal device is in the form of a labyrinth seal between a wall of the seal ring and a cooperating wall of the bearing housing.Type: GrantFiled: August 16, 1988Date of Patent: May 23, 1989Assignee: Reliance Electric CompanyInventors: Donald L. Nisley, Howard M. Martinie
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Patent number: 4830518Abstract: A seal plate for sealing the axial end opening between the outer ring and the inner ring of a cylindrical roller bearing includes a mandrelor core. The mandrel has a fixing portion at the peripheral part to be fitted to the outer ring, a slant portion protruding obliquely and outwardly, an intermediate portion extending from the slant portion perpendicularly to the axis, and bent portion protruding inwardly in the axial direction from the inner edge of the intermediate portion. A lip portion formed of an elastic member is bonded to the bent portion to extend in the opposite direction to the fixing portion. In the cylindrical outside surface of the flange of the inner ring, there is a step-formed portion in two steps at a position facing the bent portion and the lip portion of the mandrel of the seal plate.Type: GrantFiled: May 9, 1988Date of Patent: May 16, 1989Assignee: Nippon Seiki Kabushiki KaishaInventors: Takaaki Shiratani, Hiroshi Suzuki, Moichi Chiba
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Patent number: 4810107Abstract: A seal for a rolling bearing having an inner bearing ring, an outer bearing ring, and rolling elements rolling in races therebetween, wherein a cover is affixed to the outer bearing ring and carries a sealing lip engaging the side surface of a groove adjacent an end of the inner bearing ring. A shoulder at the end of the inner bearing ring defines a gap seal with the cover. The cover extends substantially normal to the axis of the bearing and the sealing lip is either slightly conically inclined, or defines an annular outwardly extending groove.Type: GrantFiled: June 14, 1988Date of Patent: March 7, 1989Assignee: SKF GmbHInventors: Horst M. Ernst, Franco Colanzi
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Patent number: 4808012Abstract: A flap seal assembly for anti-friction bearings wherein the seal components function to retain the lubricant against leakage to the outside and to function to prevent contaminants entering the bearing from the outside. The seal assembly may have a single set of flaps in combination with a dust lip type seal in one form and it may have a double set of flaps in another form. The seal assembly reduces torque drag on the bearing in the dust lip type seal and is torque free in the double flap seal form.Type: GrantFiled: March 23, 1987Date of Patent: February 28, 1989Assignee: The Timken CompanyInventor: Dennis L. Otto
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Patent number: 4798481Abstract: A rolling bearing slewing ring comprising two mutually concentric bearing rings between which rolling elements roll, one bearing ring having a seal in sliding engagement with a cylindrical seal contact surface on the other bearing ring, characterized in that the seal contact surface (5) is a finite band (6) of a wear resistant material secured to a retention surface (7,16,22,30,40) of the bearing ring.Type: GrantFiled: January 16, 1987Date of Patent: January 17, 1989Assignee: INA Walzlager Schaeffler KGInventor: Hubertus Frank
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Patent number: 4792242Abstract: A tight bearing suitable for exceptionally heavy duty conditions is supplied with side screens (14) made of a plate composition (16) which is restrained to the external ring (10) of the bearing and forms a labyrinth seal against the internal ring (11), and of plastic and elastomer materials (15) supplied with a lip (17) which creates friction on the internal ring (11); other plates (18) are assembled externally with respect to the screens (14) and are integral on the internal ring (11) and form a labyrinth seal (23) with the external ring (10) of the bearing; the internal face of the external plates (28) is lined with a layer of plastic and elastomer material (19) from which at least one lip (20) extends and forms an essentially axial seal against the external face of the plate (16) of the internal adjacent screen (14); the lip (20) of the layer (19) which lines the internal face of the external plates (18 ) slips and seals along a certain length (21) of bent conical converging internal plate (16) towards theType: GrantFiled: January 25, 1988Date of Patent: December 20, 1988Assignee: RIV-SKF Officine di Villar Perosa S.p.A.Inventors: Franco Colanzi, Angelo Vignotto
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Patent number: 4790543Abstract: A sealing device for a slot between two elements, which are rotatable relative to each other, e.g. an outer and an inner race ring in a rolling bearing, incorporates a flexible sealing portion having a lip, which contacts a sealing surface surrounding the lip. The sealing portion is rotatable, and the centrifugal force acts upon it thus that it tends to leave the surface at increasing rotational speed. In order positively to avoid that the lip is urged so hard against the surface at high rotational speeds, that an unallowable temperature increase occurs, the sealing portion and the surface have profiles of such shape, that the lip is displaced in a direction which has a component directed radially outwards relative to the rotational axis, when the sealing portion with the lip is bent by the centrifugal force.Type: GrantFiled: November 10, 1987Date of Patent: December 13, 1988Assignee: Aktiebolaget SKFInventors: Henning Wittmeyer, Magnus Kellstrom, Staffan Jarskar, Matts Floderus
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Patent number: 4776709Abstract: A seal for a bearing having a housing with an opening therein for receiving a shaft in which a bearing assembly is mounted in the housing and has an inner race for receiving the shaft. A seal consisting of a ring having a radially extending, outwardly facing flat surface is disposed in the housing opening adjacent the inner race, and a seal which may be of the V-ring type is mounted on the inner race and has a lip which seats on and rubs against the radial surface of the ring. Collars may be used on the race to retain the lipped seal in proper relationship with the ring on the inner race. The relationship of the lip to the metal ring is such that the bearing assembly can be purged by the outward flowing of the lubricant yet protected from the ingress of foreign matter. In some modifications, an auxiliary seal, which is disposed externally with respect to the lipped seal, may be used.Type: GrantFiled: April 22, 1985Date of Patent: October 11, 1988Assignee: Reliance Electric CompanyInventor: Robert W. Tooley
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Patent number: 4763904Abstract: An auxiliary sealing system generally includes a flexible sealing ring, with an optional restraining element, such as a metal band, secured therearound for further fastening same to a given circular member. Such circular member may comprise an extension of the inner race of a bearing assembly secured to a shaft by a plurality of set screw arrangements radially disposed about such inner race extension. The auxiliary seal may be provided with radial holes in the circumference thereof for selective alignment with such set screws to provide access thereto. After the set screws are tightened, the auxiliary seal may be rotated and clamped to the given circular member to thereby protect the set screws from contamination.Type: GrantFiled: October 6, 1986Date of Patent: August 16, 1988Assignee: Reliance Electric CompanyInventor: Howard W. Martinie
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Patent number: 4755067Abstract: The invention refers to a seal for self-aligning spherical rolling bearings. It is characterized therein that it incorporates two cooperating annular and mainly radially directed plates affixed to one ring each. One of the plates is equipped with at least one annular sealing lip, which exerts a mainly axial pressure against the second plate.Type: GrantFiled: March 3, 1987Date of Patent: July 5, 1988Assignee: SKF NovaInventors: Sture Asberg, Matts Floderus, Gunnar Grafstrom, Olle Andersson
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Patent number: 4753090Abstract: A device for processing leather or hide products includes one or a number of sieve drums openable at two end faces and supported in the housing of the device for rotation. The sieve drum is supported on the housing by means of a four point-contact bearing which is sealed against gaseous or fluidic medium filling the drum.Type: GrantFiled: November 10, 1986Date of Patent: June 28, 1988Inventor: Erwin Biesinger
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Patent number: 4733978Abstract: A sealing system for sealing the space between relatively rotatable members comprising a rigid support element and an annular elastomeric sealing element having an internal radial annular lip extending radially and axially from an annular root portion of the elastomeric element. The annular lip has a radial section of generally V-shaped cross section, having its vertex located obliquely with respect to the axis of the elastomeric element and comprising two portions of reduced cross section, one of the portions corresponding to the root portion and the other to the vertex of the V. Portions of reduced cross section divide the annular lip into first and second sections operable to engage with corresponding sealing surfaces on one of the members and having sufficient flexibility to hingedly connect the sections to one another and to the root portion.Type: GrantFiled: May 28, 1986Date of Patent: March 29, 1988Assignee: RIV-SKF Officine di Villar Persoa S.p.A.Inventors: Franco Colanzi, Angelo Vignotto
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Patent number: 4732398Abstract: A rubber dirt-excluding and grease-retaining seal for use in machine assemblies such as furrow forming disc assemblies in grain drills, marker disc assemblies and the like comprises a generally cylindrical, accordian-like body formed of interconnected pocket like rings defined by generally radially extending interconnected walls rendering the body axially compressible and extensible. In use, the seal is compressed between a rotary disk like member on a shaft and a stationary hub like member and is useful in excluding dirt from the disc bearing while retaining grease therein.Type: GrantFiled: June 4, 1985Date of Patent: March 22, 1988Inventor: Elmer H. Biss
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Patent number: 4722616Abstract: A bearing assembly of the type formed from two inner and two outer race members Siamese stamped from flat stock, so that there are annular gaps left between the two pairs of confronting race members. Seal supporting housing members secured to the inner races provide sealed lubricant reservoirs that feed to the ball complement through the annular gaps, and also prevent the outer race members from separating from the inner race members at the annular gaps.Type: GrantFiled: November 10, 1986Date of Patent: February 2, 1988Assignee: General Motors CorporationInventor: Frederick E. Lederman
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Patent number: 4687349Abstract: A full contact seal for a bearing assembly having an axially outer shield and an annular sealing ring which extends radially inwardly from the outer bearing race axially inward of and adjacent to the shield and which is provided with a radially outwardly facing groove positioned adjacent to the shield. The contact seal comprises a resilient annular sealing member having a base portion adapted to seat in the groove and axially outer and inner sealing lips compressively engaging and bridging the axially facing surfaces of the shield and the sealing ring, the sealing member being resiliently expandable and contractable for insertion into the groove.Type: GrantFiled: July 16, 1986Date of Patent: August 18, 1987Assignee: Jervis B. Webb CompanyInventor: Martin Pachuta
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Patent number: 4659240Abstract: A bearing protector attached to a shaft abuts against the inner race of a bearing mounted to a housing. The body of the protector extends over substantially all of the outer race. The protector does not contact the outer race due to a running clearance. Side loads which would otherwise contact the bearing seals are held by the protector which is secured to and rotates with the shaft.Type: GrantFiled: July 14, 1986Date of Patent: April 21, 1987Inventor: Thomas E. Rogus
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Patent number: 4643594Abstract: A sealed rolling bearing in which the seal consists of a sealing lip and a sealing projection connected to a sealing body. When the sealing body is seated in a groove formed in the outer ring, the sealing lip abuts a side surface of a groove formed in the inner ring with prestress. The sealing lip and sealing projection abut under the influence of the prestress to form a conical, outwardly directed centrifugal surface for ejecting moisture and dirt through a gap seal formed between the sealing projection and a shoulder of the bearing inner ring.Type: GrantFiled: December 13, 1985Date of Patent: February 17, 1987Assignee: SKF GmbHInventors: Gunter Neder, Rainer Schurger, Horst M. Ernst
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Patent number: 4605318Abstract: An elastic annular seal for use in an antifriction bearing wherein a portion of the inner race extends axially beyond the adjacent end face of the outer race and the races define an annular gap extending axially toward the chamber for the rolling elements of the bearing. The seal has a disc-shaped supporting portion which is anchored in a groove of the portion of the inner race, a sleeve which extends from the supporting portion axially toward and into the gap and bears against the inner race, a first lip which extends from the supporting portion and one axial end of the sleeve externally of the gap and sealingly and slidingly engages the end face of the outer race, and a second lip which is integral with the other axial end of the sleeve and slopes in the gap radially outwardly toward and into sealing and sliding engagement with the outer race.Type: GrantFiled: September 11, 1985Date of Patent: August 12, 1986Assignee: INA Walzlager Schaeffler KGInventor: Theodor Kaiser
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Patent number: 4597582Abstract: A seal for roller bearings having inner and outer rings, especially for bearings in electrical machines, comprising at least two sealing disks spaced a certain distance apart on one or both sides of the rolling elements between the rings, one of said sealing disks being attached to one of the bearing rings and with its free end engaging in an annular groove in the other bearing ring, and where the gap between the disks is sealed by flock fibers, characterized in that the one sealing disk, on its free edge near the annular groove, has flock fibers projecting perpendicularly from its surfaces, which fibers are arranged to make slight frictional contact with the surfaces of the annular groove and with the opposite lateral surface of the other sealing disk said other sealing disk being slotted and nonrotatably mounted in the annular groove and having, on the lateral surface facing the sealing disk, a layer of flock fibers, the free ends of which are in contact with the sheet metal part of the sealing disk.Type: GrantFiled: June 6, 1985Date of Patent: July 1, 1986Assignee: SKF GmbHInventor: Heinrich Muller
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Patent number: 4592666Abstract: A sealing device is adapted to seal a bearing (2) which is adapted to be positioned in an annular space between two cylindrical and concentric surfaces of two machine elements (30, 32) which are rotatable in relation to each other. The sealing device comprises an annular element (16) which is adapted to be connected with one (26) of the substantially cylindrical surfaces, thereby forming a clearance space in relation to a portion (4) of the bearing (2), which is firmly connectable with the other (28) of the substantially cylindrical surfaces.The annular element (16) and said portion (4) of the bearing (2) include engagement surfaces (22, 24) which are displaceable to and from firm engagement with each other by axial displacement of the annular element and said portion of the bearing in relation to each other.Type: GrantFiled: September 3, 1985Date of Patent: June 3, 1986Assignee: Forsheda ABInventor: Lennart Jornhagen
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Patent number: 4588312Abstract: An antifriction bearing having inner and outer race rings and a seal ring featuring a multiplicity of resilient seal ring retaining projections for compressive wedging engagement within a retaining groove of the outer bearing ring.Type: GrantFiled: April 18, 1985Date of Patent: May 13, 1986Assignee: Fafnir Bearing - Division of The Torrington CompanyInventors: Thorn W. Dickinson, Gilbert W. Geiger, deceased
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Patent number: 4576382Abstract: In a bushing around a pin, where the bushing is separated from the pin by a series of rollers, as in the pin of a cardan joint, the free space between the bushing and the pin is closed by an axially short packing. An annular protective cap disposed over the packing extends around the pin. The cap has a radially extending section that extends over the axial end of the packing and has an axially extending section covering the packing and extending toward the bushing. A rib inside the radially extending section of the cap extends into a cooperatingly shaped groove in the adjacent radially extending surface of the packing so that the protective cap is elastically held to the packing. The outer end of the rib is thickened and the bottom of the groove is correspondingly widened for holding the cap to the packing.Type: GrantFiled: July 10, 1985Date of Patent: March 18, 1986Assignee: FAG Kugelfischer Georg Schafer (KGaA)Inventors: Gunter Scharting, Steffen Neugebauer
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Patent number: 4555058Abstract: A coating applicator is disclosed which includes a rotary atomizer on a driven shaft. The shaft operates at high speeds. Coating material is supplied to the rotary atomizer. A pair of spaced bearings rotatably mount the shaft and a seal assembly is positioned between the rotary atomizer and the front bearing. The seal assembly includes a bearing cover having a cutting edge. A mating cap member surrounds the shaft and has a sealing shoulder which is engaged by the cutting edge. Exhaust air is used to cool the bearings, pressure the interior of the applicator and enhance the seal assembly.Type: GrantFiled: October 5, 1983Date of Patent: November 26, 1985Assignee: Champion Spark Plug CompanyInventors: Richard Weinstein, James W. Davis, Robert K. Campbell
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Patent number: 4555188Abstract: A bearing and seal assembly in which the seal has an outer casing formed with claws which are engaged in an annular groove in the outer periphery of the outer bearing ring, and a resilient annular lip or washer compressed between the outer casing and the adjacent side wall of the bearing ring and urging the outer casing away from the bearing ring, so as to engage the claws as a tight fit against a side wall of the annular groove. In one embodiment, the outer casing of the seal is made of resilient material and the annular lip is formed integral with the casing. In another embodiment, a non-planar washer of resilient material is compressed between a step on the outer casing and the adjacent side wall of the outer bearing ring.Type: GrantFiled: December 11, 1984Date of Patent: November 26, 1985Assignee: SKF (U.K.) LimitedInventor: Hubert W. T. Neal
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Patent number: 4545692Abstract: A seal for a rolling bearing unit having an inner and an outer race becoming or forming a unit with an attaching flange and rows of rolling members between the races. The seal comprises an annular element, which at its inner edge, near the raceway of a row of rolling members, may be attached on the inner race and the outer edge of which, at the same time, rests sealingly against the annular main surface of the outer race.Type: GrantFiled: May 19, 1983Date of Patent: October 8, 1985Assignee: SKF Industrial Trading & Development Company B.V.Inventors: Johan C. M. Bras, Antonio Gabelli
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Patent number: 4541741Abstract: A sealing device for a bearing between a rotor and a shaft comprises two annular discs mounted one on the rotor and the other on the shaft, and an annular brush screen having the filaments thereof compressed transversely between annular sealing surfaces on the two discs. The outer periphery of one disc has a flange which surrounds the brush screen, and the inner periphery of the other disc has a flange which projects through the bore of the screen, the discs co-operating to form a casing which encloses and protects the brush screen. The sealing device can be mounted on one of the bearing rings of a ball bearing to form a self contained bearing assembly.Type: GrantFiled: June 22, 1983Date of Patent: September 17, 1985Assignee: SKF (U.K.) LimitedInventors: Keith W. Woodbridge, Derrick G. Hjertzen
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Patent number: 4533265Abstract: A rolling bearing assembly fitted with seals for a bearing chamber between two relatively rotatable components of the assembly. Each seal is mounted on one of the components and has a resilient sealing lip in sliding contact with a sealing surface on the other component, the lip being deflected by the sealing surface in a direction away from the bearing chamber under normal running conditions. The side of the lip facing the chamber is formed with grooves arranged to permit air to flow past the seal in the event of the lip being drawn inwardly towards the bearing chamber by a reduced pressure therein. The side of the lip may be provided with ribs instead of grooves.Type: GrantFiled: February 7, 1983Date of Patent: August 6, 1985Assignee: SKF (U.K.) LimitedInventor: Keith W. Woodbridge
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Patent number: 4530609Abstract: The specification discloses a light-duty conveyor roll bearing which is quiet, static conductive, and capable of operating at relatively high speeds. The bearing includes a stamped, cup-shaped outer race; an inner race positioned therein; and an end cap crimped to the rim of the outer race to shield one side of the ball raceway, to provide a thrust bearing surface for the balls, and to provide a seal contacting surface. Opposite the end cap, the outer race extends radially inwardly adjacent to or beyond the inner race to shield the other side of the ball raceway. A graphite-filled, electrically conductive, polymeric hub supports the inner race and includes an annular seal contacting the end cap to seal the one side of the ball raceway.Type: GrantFiled: August 3, 1983Date of Patent: July 23, 1985Assignee: FROCEMCO, Inc.Inventors: Philip D. Jasperse, Siegfried K. Weis, Milo D. Sovis, Jr.
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Patent number: 4515574Abstract: A universal joint seal is provided for a universal joint, which seal is more effective in retaining lubricant and in preventing the ingress of water and contaminants, particularly when engaging surfaces which tend to be rough. In a specific form, the universal joint includes a cross having a body and trunnions extending therefrom with an annular shoulder and an adjacent surface of circular cross section at the juncture of said body and each of the trunnions. The bearing cup has an open end which receives the trunnion and can have an annular groove adjacent the open end. The universal joint seal comprises a resilient sealing member having at least two circular lips which engage the annular shoulder of the cross and at least one additional lip which engages the adjacent surface of the cross. The sealing member also has at least one lip which engages the open end of the cup and additional lips which engage the groove portion of the cup.Type: GrantFiled: February 16, 1983Date of Patent: May 7, 1985Assignee: The Zeller CorporationInventor: Philip J. Mazziotti
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Patent number: 4505484Abstract: In a sealing device for a rolling bearing wherein the clearance between an outer race and an inner race is sealed by a sealing plate fixed to the outer race side, the sealing plate has on its inner periphery an axially extending inner lip, a radially extending outer lip and an intermediate lip extending between said two lips and having the tip end thereof divided into two directions. The inner race has on its outer peripheral surface adjacent to the end thereof a concave seal groove having an inner shoulder and an outer shoulder having a diameter smaller than that of the inner shoulder. The inner lip of the sealing plate cooperates with the inner shoulder of the seal groove to form an inner sealing portion between the inner lip and the inner shoulder. The outer lip of the sealing plate cooperates with the outer shoulder of the seal groove to form an outer sealing portion between the outer lip and the outer shoulder.Type: GrantFiled: March 12, 1980Date of Patent: March 19, 1985Assignee: Nippon Seiko Kabushiki KaishaInventors: Takeo Ohkuma, Akihiko Tanaka
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Patent number: 4484824Abstract: A combined bearing having both a radial bearing and a thrust bearing which is applicable to the strut-type suspension of an automotive vehicle. The combined bearing includes a bearing race member having a sealing capacity which is coupled to an opposing bearing race member by using an engaging lip and a coupling lip. Both lips are provided on a radial bearing member. The outside configuration of the assembled sealed combined bearing is compact. In addition the construction, handling and assembly are very simple.Type: GrantFiled: August 8, 1983Date of Patent: November 27, 1984Assignee: Nippon Seiko Kabushiki KaishaInventors: Seiji Higuchi, Moichi Chiba
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Patent number: 4482194Abstract: A replaceable wear sleeve cartridge fixedly mounted to a housing bore carries internally the fixed race of an anti-friction bearing and a static seal race. The wear sleeve cartridge defines with a labyrinth preseal bushing fixed to the shaft, the basic elements of a labyrinth preseal and additionally resiliently couples through a seal wedge, a rotating seal race whose end face is both fluid pressure and resiliently biased against the end face of the annular static seal race.Type: GrantFiled: September 12, 1983Date of Patent: November 13, 1984Assignee: Disposable Waste Systems, Inc.Inventor: Joseph W. Chambers, Sr.
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Patent number: 4478463Abstract: A conical roller bearing has a side plate of substantially L-shaped cross section fitted to the larger diameter side end portion of the inner peripheral surface of an outer race. The inner end surface of the side plate and the end surface of the larger diameter portion of a retainer are axially opposed to each other so that the inner end surface and the end surface of the larger diameter portion bear against each other when the cone has moved axially outwardly.Type: GrantFiled: December 13, 1982Date of Patent: October 23, 1984Assignee: Nippon Seiko Kabushiki KaishaInventors: Toru Takai, Kenji Takei, Youichi Nagano