Particular Mounting, Frame, Casing, Or Reinforcement Feature Patents (Class 277/572)
  • Patent number: 7396021
    Abstract: A roll stub is rotatable relative to a stationary support and has a rotatable support fixed to the roll stub, an annular and radially directed seal surface fixed on one of the supports, and a seal ring on the other of the supports having a lip engageable with the seal surface. A support element that is substantially less stiff than the seal ring is provided between the other support and the seal ring for biasing the lip against the seal surface while permitting of the seal ring relative to the other support. A clamp body rotationally fixed to the other support directly engages the seal ring and presses the seal ring directly against an abutment. Interengaging tooth formations on the clamp body and on the seal ring arrest the seal ring on the other support against angular movement thereon while permitting relative radial movement.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: July 8, 2008
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Karl Keller, Konrad Roeingh
  • Patent number: 7354046
    Abstract: Advantageous seal systems are provided that include a barrier member movable relative to a shaft to allow sequential engagement of resilient seal members, e.g., lip seals, with the shaft. Movement of the barrier member may be effected manually or through introduction of pressurized fluid to effect piston-like movement. The disclosed seal assemblies may include an automatic leak detector and may utilize such leak detection to effectuate automatic movement of the barrier member. The barrier member may be moved relative to the shaft while the shaft is in movement, e.g., rotating or reciprocating, thereby permitting seal maintenance without interruption in operation. As seal members are sequentially brought into sealing engagement with the shaft, the previously engaged seal members contribute to the sealing performance of the seal assembly, although no longer effective to establish a stand-alone seal with the shaft. Front and rear bushings may be provided within the seal system.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: April 8, 2008
    Assignee: Ashbridge & Roseburgh Inc.
    Inventor: Thomas W. Ramsay
  • Patent number: 7344140
    Abstract: The lip-type seal of the present invention is a lip-type seal with which the outer periphery of a rotational shaft (S) supported by a predetermined housing (H) is sealed. The lip-type seal is made up of a first annular reinforcing member (11) and a first sealing member (12). The first reinforcing member (11) includes a wall surface part (11a) defining a hole through which the rotational shaft (S) is passed and a cylindrical part (11b) bent from the outer edge of the wall surface part (11a). The first sealing member (12) includes an annular base (12a) that is joined to the housing (H), a first lip part (12b) that extends almost conical from the base (12a) inwardly in the radial direction and that comes into contact with the rotational shaft (S), and an annular concave part (11c) formed on the base (12a) so as to detachably fit the cylindrical part (11b). Accordingly, a desired sealing capability can be secured, and the components can be easily assembled, disassembled, and recycled.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: March 18, 2008
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Yasuhiro Ikeda
  • Patent number: 7341257
    Abstract: A shaft seal/position sensor module assembly includes a carrier body that is mountable on a shaft housing about an opening through which a rotatable shaft extends. A sleeve is mountable on the shaft and carries a multi-pole encoder ring having a radially outwardly facing sensor surface. A magneto-resistive sensor is mounted on said carrier body in position to communicate with said sensor surface of said encoder ring.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: March 11, 2008
    Assignee: Federal-Mogul World Wide, Inc
    Inventors: David M. Toth, Richard E. Dewald, Bhawani Tripathy
  • Patent number: 7314219
    Abstract: A seal assembly provides a seal between a housing member and a shaft member extending through a bore formed in the housing member. The seal assembly comprises a seal member mounted to the housing member within the bore and about the shaft member and extending radially inward therefrom, an axially extending seal sleeve member provided to fit over the shaft in a fluid-tight manner for cooperating with the seal sleeve member, and a guide member extending radially outward from the seal sleeve member. The guide member has geometry provided for centrally locating the shaft within the bore in the tubular housing. The guide member is provided to protect the sealing integrity of the seal member when the seal assembly and the shaft member are assembled to one another. A method for installing the seal assembly with the guide member is also provided.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: January 1, 2008
    Assignee: Torque-Traction Technologies, LLC.
    Inventors: Michael Jason Horvath, Frank James Bowler
  • Patent number: 7232129
    Abstract: To prevent lowering and unstableness of magnetic force and trouble caused by influence of muddy water or the like entered between the magnetic encoder (21) and a magnetic sensor (6), a sealing apparatus (4) comprises an approximately C-shaped protecting annular member (11) fitted to one of an inner member (1) and an outer member (2), a first encoder member (12) having a cylinder portion (12a) fitted to the protecting annular member (11), a second encoder member (13) held between the protecting annular member (11) and the first encoder member (12), a seal annular member (14), and a seal member (15) which is vulcanized and bonded to the seal annular member (14) and has seal lips slidably contacting with the protecting annular member (11) and the encoder member (12).
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: June 19, 2007
    Assignee: NOK Corporation
    Inventor: Naoto Kobayashi
  • Patent number: 7201380
    Abstract: A dynamic seal for a rotary shaft, the seal comprising a sleeve for being constrained in rotation on the shaft and an annular lip of polymer having a low coefficient of friction to come into sliding rotary contact with a stationary casing surrounding said shaft so that the dynamic seal provides sealing between said shaft and said casing. An annular encoder element of magnetizable polymer and presenting at least one polarized mark is secured to said sleeve and forms a support for said lip. The invention also provides a device including such a seal, and a method of fabricating the seal.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: April 10, 2007
    Assignee: Hutshinson
    Inventor: Bernard Branchereau
  • Patent number: 7172007
    Abstract: A reinforcing ring applicator is provided to receive cartridges of reinforcer rings for applying flat, adhesive-coated annular reinforcement rings onto sheets of material about perforations which have been formed in the sheets of material. The reinforcer ring cartridge is a disposable item comprised of an annular backing member releaseably attachable to the reinforcing ring applicator. A reinforcing ring mounting post is frictionally engaged in a central aperture in the annular backing member. The reinforcer mounting post has a cylindrical, corrugated exterior surface and a lower tip formed with a plurality of separate, downwardly and radially inwardly directed, resilient deflectable fingers projecting therefrom. A plurality of flat, annular reinforcing rings are stacked one atop another and are releaseably and frictionally engaged with the mounting post by the corrugations thereof.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: February 6, 2007
    Inventor: John Hui
  • Patent number: 7156400
    Abstract: A seal assembly provides a rotating portion and a rotationally fixed portion. The rotating portion includes a running sleeve, a slinger segment and an upper seal segment. The slinger segment radially extends outward of the fixed portion so as to protect the fixed portion. The fixed portion includes a press fit outer diameter which is pressed into an opening located within the assembly. A seal mount segment located receives a resilient annular seal which rides upon the running sleeve and the upper seal segment.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: January 2, 2007
    Assignee: ArvinMeritor Technology, LLC
    Inventor: Jack Darrin Oates
  • Patent number: 7147229
    Abstract: A shaft seal assembly (10) features an annular carrier (14), an annular shaft seal element (16) and an annular felt washer (18) in an integral assembly that can be installed in one step using a simple push-on tool. The washer (18) is fixed to the carrier (14), such that the carrier (14), shaft seal element (16) and washer (18) are unitized.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: December 12, 2006
    Assignee: Federal Mogul World Wide Inc.
    Inventor: Christopher Madigan
  • Patent number: 7134669
    Abstract: A sealing ring has an annular disk with at least one fastening part secured on a first machine part and at least one sealing part that, when the sealing ring is mounted, sealingly rests against a second machine part. The annular disk is fastened without intermediate positioning of a supporting body on the first machine part. The sealing ring is a rotary shaft seal, a piston seal ring, or a rod seal. One of the first and second machine parts is stationary and the other one of first and second machine parts is moveable. A first bonding layer is attached to the annular disk, and the annular disk is connected with the first bonding layer to the first machine part. The first bonding layer is an adhesive layer.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: November 14, 2006
    Assignee: KACO GmbH & Co.
    Inventor: Klaus-Jürgen Uhrner
  • Patent number: 7125020
    Abstract: A rotary fluid pressure device (11) having a housing (13,31), inlet and outlet ports (21,23), a gerotor gear set (15), a valve member (51) and an input-output shaft (49). A seal assembly (73) is disposed radially between the shaft (49) and the housing (31). The seal assembly comprises, in the order of leakage flow from a case drain region (63), a high pressure shaft seal (77), an annular chamber (71) in which is disposed a rigid back-up member (79;91) for the seal (77), a drain passage (81) communicating from the annular chamber (71) to a case drain port (47), and a low pressure shaft seal (83). The back-up member (79;91) may cooperate with either the housing (31) or the seal (77) or the input-output shaft (49) to define a fluid passage (87,89;93,95), so that any leakage flow past the high pressure shaft seal (77) flows through the drain.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: October 24, 2006
    Assignee: Eaton Corporation
    Inventors: James M. LeClair, Jr., Jarett D. Millar, Andrew T. Miller
  • Patent number: 7080841
    Abstract: A hub seal adapter has an outer diameter and thickness dimensioned to removably fit into the internal bore of a standard automotive hub in the same position that the grease seal would normally occupy, and be retained in the hub by the same snap ring as would be used to retain the seal in the hub. The adapter includes an internal bore into which a grease seal is press fit, the grease seal having a slightly smaller outside diameter than the standard seal. A snap ring retains the grease seal in the internal bore of the adapter. The adapter can be manually removed from the hub for cleaning and greasing of the hub bearings without damaging the seal, thereby allowing reuse of the seal.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: July 25, 2006
    Inventor: James C. Beattie
  • Patent number: 7070017
    Abstract: A swing mechanism for a construction machine having a grease bath seal. A grease bath can be disposed on a vehicular base carrier of the machine, and can be coupled with a swing frame. The grease bath seal can then act to prevent intrusion of pollutants or other foreign materials into the grease bath. The seal may act to prevent intrusion of pollutants or other foreign materials over an extended amount of time and can be arranged in such as manner as to improve the durability and tightness of a seal member.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: July 4, 2006
    Assignee: Hitachi Construction Machinery Co., LTD
    Inventors: Akio Hoshi, Kazuhisa Tamura, Nozomu Tanaka, Shuuji Tabata, Koji Kawasaki, Yukio Yanagisawa
  • Patent number: 7063193
    Abstract: A seal structure is disclosed as mounted in a coupling 1, exposed in the vicinity of a stationary member 14, with a dust cover 15 being mounted to a cylindrical member 19 for preventing foreign material from entering a gap between the coupling 1 and the stationary member 14, and a seal member 17 is disposed at a position opposed to the dust cover on the stationary member 14, with a seal portion 123 of the seal 17 being held in sliding contact with the dust cover 15.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: June 20, 2006
    Assignee: Tochigi Fuji Sangyo Kabushiki Kaisha
    Inventor: Shouji Yoshida
  • Patent number: 7059608
    Abstract: This invention relates to a seal cartridge comprising at least two back-to-back lip seals. A first, generally L-shaped sleeve is applied against the back wall of the seal ring such that its axially extending cylindrical surface retracts the lip portion of the outboard seal into a non-deployed position. A second, generally L-shaped sleeve is fitted up against the back of the first sleeve so as to place the lip end of the inboard seal in a similarly raised or retracted position. Upon installation of the seal ring about the shaft and in the shaft housing, the second, innermost sleeve is removed, such that the inboard lip seal is deployed against the surface of the shaft. Upon detection of leakage past the inboard seal, the first sleeve is retracted to thus deploy the remaining outboard lip seal.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: June 13, 2006
    Assignee: Ashbridge & Roseburgh Inc.
    Inventor: Thomas W. Ramsay
  • Patent number: 7055825
    Abstract: Herein disclosed is a shaft sealing apparatus which comprises a vacuum casing formed with a vacuum chamber, a driving shaft having an outer cylindrical surface and movably extending in the vacuum chamber of the vacuum casing, and a sealing ring in the form of an annular ring shape and including a sealing lip held in contact with the outer cylindrical surface of the driving shaft, an annular spring member operative to impart a force to the sealing lip to ensure that the sealing lip is held in tight contact with the outer cylindrical surface of the driving shaft, and a peripheral portion radially outwardly extending from the sealing lip, in which the outer cylindrical surface of the driving shaft is smaller in surface roughness Ra than 0.1 (?m).
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: June 6, 2006
    Assignee: Teijin Seiki Co., Ltd.
    Inventors: Tetsuya Watanabe, Hiroki Mori, Chohei Okuno
  • Patent number: 7056028
    Abstract: A combination seal ring with an encoder for use to close off the opening of the space between a fixed ring and a rotational ring and to detect a rotational speed of the rotational ring, comprising a seal ring secured to the fixed ring, a metal slinger secured to the rotational ring, and an encoder of a rubber magnet secured to the slinger, the seal ring comprising a metal core secured to the fixed ring, and a fixed ring portion bent toward the rotational ring from the fixed cylindrical portion; and a resilient member bonded all around the metal core, the slinger comprising a rotational cylindrical portion secured to the rotational ring, and a rotational ring portion bent toward the fixed ring from the rotational cylindrical portion, the encoder bonded on the rotational circular ring portion, opposite to the seal lips by a molding process, the end rim of the encoder being short at least 0.2 mm of the end rim of the rotational circular ring portion.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: June 6, 2006
    Assignee: NSK Ltd.
    Inventors: Masahiro Hosoda, Yuji Nakamura
  • Patent number: 6991234
    Abstract: 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 contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: January 31, 2006
    Assignee: International Seal Company, Inc.
    Inventor: Michael R. Oldenburg
  • Patent number: 6979001
    Abstract: A wheel bearing includes a sealing device 5 positioned between inner and outer members 1 and 2. This sealing device 5 includes an elastic member 14, which eventually forms an encoder grid and is provided on a first annular sealing plate 11. A second annular sealing plate 12 is provided with sealing lips 16a to 16c. An engagement 18 between a cylindrical wall 11a of the first annular sealing plate 11 and the inner member 1 is provided with an elastic member 20 made of a material dissimilar to that for the elastic material 14. This elastic member 20 may be a rubber coated layer, resin paint layer, a thin film of adhesive material or a ring-shaped rubber member. Thereby, any possible ingress of water across an engagement surface of the annular sealing plate is prevented, accompanied by increase of the lifetime of the bearing, with no problem associated with separation and displacement of the annular sealing plates. The magnetic flux density can also be easily secured.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: December 27, 2005
    Assignee: NTN Corporation
    Inventors: Hisashi Ohtsuki, Takayuki Norimatsu, Eiji Funahashi, Koji Kametaka, Motoharu Niki, Katsumi Sugiyama, Kenro Adachi
  • Patent number: 6974136
    Abstract: Sealing device (1) for a wheel hub group (2) connected to the differential (3) of a vehicle, and provided with a rolling bearing (9), the sealing device (1) being mounted in such a way as to protect the bearing (9) from a lubricating fluid for the lubrication of the differential (3), and presenting a first shield (22) which is integral with an outer race (10) of the bearing (9), a second shield (23) which is arranged inside the first shield (22) and which is integral with an inner race (11) of the bearing (9) and which faces the first shield (22) itself, and a dynamic sealing element (24) which is interposed between the first and second shields (22, 23); the second shield (23) being defined by a support portion (25) made of metallic material and force fit onto the inner race (11) and a cylindrical encoder (27) which is integral with the support portion (25), and the first shield (22) being made of metallic material lined with rubber material, and being provided with a loophole (38) which is suitable for being
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: December 13, 2005
    Assignee: Aktiebolaget SKF
    Inventors: Angelo Vignotto, Andrea Griseri, Alfredo Monetti, Claudio Savarese
  • Patent number: 6962344
    Abstract: A bearing seal for a water pump of an automobile has rolling elements between an outer ring fixed to a casing and a rotary shaft that is provided with a drive portion at one end and an impeller at the other end. In addition, a seal is formed between the outer ring and the rotary shaft by an annular seal body fixed to each end of the outer ring. The seal body on at least the impeller end of the rotary shaft is made of hydrogenated nitrile rubber, to achieve a seal body that is inexpensive but does not deform, even when used in a high-temperature environment in contact with cooling water in a long time.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: November 8, 2005
    Assignee: NSK Ltd.
    Inventors: Syuichi Yano, Takeshi Nakamura
  • Patent number: 6955358
    Abstract: An oil seal (10) includes a first seal (20) for sealing an engine (1) side and a second seal (30) for sealing a flywheel (4) side. The first seal (20) is an axial seal abutted on an inner ring (11) from the direction along the axial direction of a crank shaft (2). The second seal (30) is a radial seal abutted on the inner ring (11) from the direction along the radial direction of the crank shaft (2). A communication hole (25) is provided on the second seal (30), thereby preventing a space (40) surrounded by the first seal (20), the second seal (30) and the inner ring (11) from the occurrence of the negative pressure.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: October 18, 2005
    Assignee: Komatsu Ltd.
    Inventors: Keisaku Iwakata, Kenji Mihara
  • Patent number: 6945535
    Abstract: A seal, especially for shafts movable in a translational direction, has at least one static sealing area and at least one dynamic sealing area and another sealing point outside of the dynamic sealing area. The other sealing point is formed by at least two elements functionally connected to each other, one of which at least one is stationary and at least one other is movable, following a shaft stroke.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: September 20, 2005
    Assignee: Federal-Mogul Sealing Systems Bretten GmbH
    Inventor: John Kapcoe
  • Patent number: 6945536
    Abstract: A two liquid type oil seal 10 having a first seal 13 and a second seal 14, is provided with a communication hole 16 in the first seal 13. The communication hole 16 communicates a space 24 defined by the first and second seals 13, 14 and a crank shaft 2, with a gap 25 between an outer casing 11 and the first seal 13. Negative pressure induced in the space 24 is eliminated by sucking air from the outside through the communication hole 16 while lubrication oil having entered into the space 24 is removed from a groove 15 which is formed in the first and second seals 13, 14, thereby it is possible to restrain the first and second seals 13, 14 from being worn.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: September 20, 2005
    Assignee: Komatsu Ltd.
    Inventors: Keisaku Iwakata, Tomoki Shimauchi
  • Patent number: 6921083
    Abstract: A sealing apparatus (20) has a slinger (22) with a substantially L-shaped cross-section including a cylindrical portion (22a) to be fitted on a member of rotational side and an upstanding portion (22b) radially extending from one end of the cylindrical portion (22a). The apparatus also has a core member (23a) of a substantially L-shaped cross-section including a cylindrical portion (23aa) to be fitted in a member of stationary side and an upstanding portion (23ab) radially extending from one end of the cylindrical portion. Further included is a sealing element (23b) including one ore more side lips (23ba) and (23ba) adapted to be slidably contacted with the upstanding portion (22b) of the slinger (22) and one or more radial lips (23bb) adapted to be slidably contacted with the cylindrical portion (22a) of the slinger (22).
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: July 26, 2005
    Assignee: NTN Corporation
    Inventors: Makoto Yasui, Koji Sato
  • Patent number: 6918596
    Abstract: A seal with integrated sealing and rotation measuring capabilities includes a first slinger having an L-shaped cross section and is adapted to be fixed to a rotational bearing element of a bearing assembly, the first slinger including a first cylindrical portion extending axially and a first flanged portion extending radially from the first cylindrical portion. A seal ring is arranged axially inward from the first slinger and is adapted to be secured to a non-rotational bearing element, and the seal ring has elastic seal lips having respective tips adapted to make sliding contact with the side of the first slinger facing the seal ring. A second slinger has an L-shaped cross section arranged axially inward from the said seal ring and is adapted to be fixed to the rotational bearing element. The second slinger includes a second cylindrical portion extending axially and a second flanged portion extending radially from the second cylindrical portion.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: July 19, 2005
    Assignee: Uchiyama Manufacturing Corp.
    Inventor: Shinzaburo Ichiman
  • Patent number: 6913264
    Abstract: A sealing arrangement for sealing a housing with respect to a shaft includes a first annular supporting element connected to the housing, a second annular supporting element connected to the shaft, and a first seal connected to one of the two supporting elements and in abradant contact with the other supporting element. To improve the sealing function of the sealing arrangement, the supporting element to which the first seal is not connected is provided with a second seal which runs frictionally on the machine part to which the first supporting element is connected.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: July 5, 2005
    Assignee: AB SKF
    Inventor: Jürgen Kurth
  • Patent number: 6896270
    Abstract: There is provided a sealing device (10) for a unitised grease-or oil-lubricated package bearing assembly comprising a twin outer race (14) and two inner races (15, 16) arranged next to each other on a shaft (12), with their faces abutting. Typically, oil may be present between the said shaft (12) and the bore surfaces of the bearing inner races (15, 16), for the purpose of lubricating parts of the system adjacent to the bearing, but not the sealed, lubricated bearing itself. The scaling device comprises a substantially annular sealing portion (26) and the provision of a step (29) in the abutting face of one of the inner races such that a substantially rectangular-section groove (30) is created on the outside diameter of the abutting inner races (15, 16).
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: May 24, 2005
    Assignee: The Timken Company
    Inventors: Graham Frederick Sturman, Hans Unger, Markus Schwerdtfeger
  • Patent number: 6886833
    Abstract: A seal includes an annular hub and an annular sealing projecting outwardly from the hub. The sealing lip includes an inner portion located adjacent the hub and an outer portion spaced from the hub. The outer portion defines a nose. The seal includes a hinge portion formed as a one-piece construction with the hub and the sealing lip, and the hinge portion pivotably interconnects the sealing lip to the hub so that the sealing lip is selectively manually movable to and between: (i) an operative position, where the nose is located axially outward of the second axial end of the hub; and, (ii) a non-operative installation position, where the lip is located axially inward of the second axial end of the hub. The hinge portion biases the sealing lip away from the operative position when the sealing lip is moved to the non-operative position, and the hinge portion biases the sealing lip away from the non-operative position when the sealing lip is moved to the operative position.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: May 3, 2005
    Assignee: System Seals, Inc.
    Inventors: Arnold A. W. J. von Engelbrechten, Ronald G. Claus
  • Patent number: 6840521
    Abstract: The face pressure of a seal lip for sealing is made sharp to improve the sealing ability and the seal lip is prevented from being deformed abnormally when a shaft is inserted therein. In the constitution, the inside diameter of the corner face of the sealing face is smaller than the outside diameter of the shaft. When the outside surface of the support section of the support ring expands the expandable inner surface, the inside diameter of the sealing face is also expanded diametrically to closely contact the corner face of the sealing face with the shaft.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: January 11, 2005
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Yasuhiro Ikeda
  • Publication number: 20040201179
    Abstract: An oil seal (10) includes a first seal (20) for sealing an engine (1) side and a second seal (30) for sealing a flywheel (4) side. The first seal (20) is an axial seal abutted on an inner ring (11) from the direction along the axial direction of a crank shaft (2). The second seal (30) is a radial seal abutted on the inner ring (11) from the direction along the radial direction of the crank shaft (2). A communication hole (25) is provided on the second seal (30), thereby preventing a space (40) surrounded by the first seal (20), the second seal (30) and the inner ring (11) from the occurrence of the negative pressure.
    Type: Application
    Filed: April 8, 2004
    Publication date: October 14, 2004
    Applicant: KOMATSU LTD.
    Inventors: Keisaku Iwakata, Kenji Mihara
  • Patent number: 6802511
    Abstract: A seal end plate is configured and dimensioned to surround the neck of a horizontal roll in a rolling mill and comprises a circular body having a shoulder projecting axially from its outboard side. At least one well is provided on the shoulder, and a drainage passageway leads from the well to the outboard side of the body. The drainage passageway is located in a one angularly spaced from horizontal and vertical reference planes bisecting the seal end plate.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: October 12, 2004
    Assignee: Morgan Construction Company
    Inventors: Armado S. Martins, Stephen A. Bonazoli
  • Patent number: 6783131
    Abstract: A neck seal is disclosed for use in an oil film bearing assembly for a roll in a rolling mill, the roll having a neck with an intermediate tapered section leading to a reduced diameter end section contained within a sleeve, with the sleeve being fixed in relation to the roll neck and being journalled for rotation in a bushing fixed within a chock. The neck seal is adapted to be mounted on the tapered section of the roll neck for rotation therewith at a location surrounded by a seal end plate fixed to the chock. The neck seal comprises a flexible circular body having axially spaced radially outwardly projecting first and second flanges configured and dimensioned to sealingly contact the seal end plate. First and second axially spaced ridges projecting radially inwardly from the circular body for contact with the tapered section of the roll neck.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: August 31, 2004
    Assignee: Morgan Construction Company
    Inventors: Armando S. Martins, Peter N. Osgood, Earl S. Winslow
  • Patent number: 6783130
    Abstract: A seal mechanism with improved pressure tightness is provided to eliminate a return piping to a fuel tank used for reducing pressure applied to the seal mechanism in a high pressure fuel pump. The seal mechanism includes a stress reduction mechanism for reducing the stress generated at the junction between its retaining member and flexible member.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: August 31, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Minoru Hashida, Hideki Machimura, Hideaki Yamauchi, Masayoshi Kotaki, Takefumi Yamamura
  • Patent number: 6776420
    Abstract: Sealing device (1) for a rolling contact bearing (2) presenting an annular sealing lining (5), a protective shield (6) for the lining (5) which is mounted on the outside of the lining (5) itself, and an encoder (15) which is integral to the shield (6) and which is protected by a covering element (16) arranged opposite the shield (6) in relation to the encoder (15).
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: August 17, 2004
    Assignee: SKF Industrie S.p.A.
    Inventors: Angelo Vignotto, Pierangelo Cherio
  • Patent number: 6764080
    Abstract: A rotating shaft seal provided with a seal element, arranged between a housing and a rotation shaft, which contacts the rotation shaft, and a seal member made of rubber having a lip end portion, disposed on a fluid storing chamber side to the seal element, which contacts the rotation shaft, comprising a supporting metal for supporting a rear face of the seal member of rubber.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: July 20, 2004
    Assignees: Mitsubishi Cable Industries, Ltd., Kabushiki Kaisya Toyoda Jidoshokki Seisakusho
    Inventors: Atsushi Hosokawa, Hiromi Obata, Takeshi Baba, Tomoya Inagaki, Toshiro Fujii, Takayuki Imai, Naoya Yokomachi, Kazuo Murakami
  • Patent number: 6736403
    Abstract: In a known rotary shaft seal with two sealing lips, a first diaphragm body (20) with a first sealing lip (21) is mounted on a support element (22) and inserted in a second diaphragm body (23) with a second sealing lip (27) that rests against a pressure mount (24) and is mounted in the bearing mount (1). The object of the invention is to prevent the pressure medium from passing through the gap (26) between the two diaphragm bodies, which is open towards the pressure side, and ensure that the first diaphragm body can be displaced in the second along this gap. According to the invention, the first diaphragm body (2) is mounted on a support element (3) and inserted from the unpressurized side into the second diaphragm body (4), which serves to mount the seal in the bearing mount (1), reaches around a pressure mount (5) on the unpressurized side and secures it against axial movement.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: May 18, 2004
    Assignee: VR Dichtungen GmbH
    Inventor: Siegmar Kreutzer
  • Patent number: 6729625
    Abstract: An annular seal (10) for a rolling roll (12) able to be assembled rotatable on at least one supporting oil-film bearing (15), including an annular body (20) made of flexible material, shaped to define a central cavity (21) able to be coupled with a tapered end (11) of the rolling roll (12), between the supporting bearing (15) and a front surface (16) of the rolling roll (12), and a pair of substantially parallel radial appendices (22, 23), which define an outer annular compartment (25) in which, during use, a separation element (26) of a fixed supporting flange (27) is able to be arranged; in the seal (10) at least terminal lips (29, 30) of the radial appendices (22, 23), at least on the side arranged towards the annular compartment (25), are provided with anti-wear elements (31) able to contact, during use, a sliding surface (32) of the fixed supporting flange (27).
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: May 4, 2004
    Assignee: Danieli & C. Officine Meccaniche S.p.A.
    Inventors: Fausto Drigani, Riccardo Melchior, Marco Di Giacomo
  • Patent number: 6729626
    Abstract: Static sealing element (1) for a rolling bearing (2) which is mounted on a cylindrical element (3) which presents a blocking moulding (4) which is positioned against an inner race (5) of the rolling bearing (2) itself and which is suitable for being arranged in contact with a shoulder (6) the sealing element (1) presenting a support (8) which is associated with the inner race (5) of the rolling bearing (2), and a sealing lip (9), which forms an integral part of the support (8) and which presents, in turn, a substantially conical end portion (17), which axially projects in relation to the blocking moulding (4) and which radially forks opposite the blocking moulding (4) itself.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: May 4, 2004
    Assignee: SKF In{acute over (d)}ustrie S.p.A.
    Inventors: Andreas Ruetter, Angelo Vignotto, Claudio Savarese
  • Patent number: 6726210
    Abstract: A sealing device for a gear box includes a box having a hole defined through a wall thereof and a shaft having a first end rotatably engaged with an inside of the box. A second end of the shaft is supported by a bearing which is received in a frame engaged with the hole of the box. A cap is connected to an end of the frame in the box and mounted to the second end of the shaft. A space is defined between a skirt and a protrusion of the cap so as to receive a seal therein. The seal has a flexible plate which is engaged with the end of the frame in the box. The flexible plate effectively prevents oil in the box from entering a gap between the bearing and the frame when the shaft is not rotated.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: April 27, 2004
    Assignee: Li Ming Machinery Industrial Co., Ltd.
    Inventor: Yu-Hsing Lin
  • Patent number: 6719298
    Abstract: A seal assembly which acts as a piston in a vehicle power steering unit. The seal includes a casing and an elastomeric seal body and is affixed to a movable rack at two attachment points. One point is the tail portion of an axial flange swaged into a groove in the rack, and a second part of the same axial flange has a groove for retaining a locking ring in a second groove in the rack. The rack moves within a housing having a first bore, a counterbore, and an enlarged bore. The seal comprises two oppositely facing lips and a lip body bonded to a radial flange of the seal assembly and engaging the enlarged bore which divides the space into two pressurizable fluid receiving cavities. An auxiliary seal is seated in the counterbore and seals the first bore. The seal assembly has a nose portion which engages the auxiliary seal to fully seat it in the counterbore. The nose portion, in one case, is a separate axially extending plastic piece that seats in a groove in the seal body.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: April 13, 2004
    Assignee: SKF USA Inc.
    Inventors: Daniel L. Riedl, John A. Wilkins
  • Patent number: 6715769
    Abstract: A rotating shaft seal provided with a seal element, arranged between a housing and a rotation shaft, which contacts the rotation shaft, and a seal member made of rubber having a lip end portion, disposed on a fluid storing chamber side to the seal element, which contacts the rotation shaft, comprising a supporting metal for supporting a rear face of the seal member of rubber.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: April 6, 2004
    Assignees: Mitsubishi Cable Industries, Ltd., Kabushiki Kaisya Toyoda Jidoshokki Seisakusho
    Inventors: Atsushi Hosokawa, Hiromi Obata, Takeshi Baba, Tomoya Inagaki, Toshiro Fujii, Takayuki Imai, Naoya Yokomachi, Kazuo Murakami
  • Patent number: 6712362
    Abstract: In a master/slave cylinder system for clutches or brakes, primary seals have bevels which interact with similar bevels of formations on housings of the respective cylinders. Along with the lowest possible friction in the region of the sealing lips, this permits carrying out uncomplicated pressure/negative-pressure filling in the case of the master cylinder. The primary seals slide by the wedge of effects in the direction of the pressure on the bevels of the annular formations and reduce the annular bearing face of the sealing lip in a frictionally optimized manner.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: March 30, 2004
    Assignee: Mannesmann Sachs AG
    Inventors: Klaus Krappmann, André Gemeinhardt, Hai Sui, Dieter Gebauer, Boleslaw Tulaczko, Volker Stampf
  • Publication number: 20040056428
    Abstract: A seal structure is disclosed as mounted in a coupling 1, exposed in the vicinity of a stationary member 14, with a dust cover 15 being mounted to a cylindrical member 19 for preventing foreign material from entering a gap between the coupling 1 and the stationary member 14, and a seal member 17 is disposed at a position opposed to the dust cover on the stationary member 14, with a seal portion 123 of the seal 17 being held in sliding contact with the dust cover 15.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 25, 2004
    Applicant: TOCHIGI FUJI SANGYO KABUSHIKI KAISHA
    Inventor: Shouji Yoshida
  • Patent number: 6702294
    Abstract: Seal unit for mechanical members rotating relative to each other, in particular foundry rollers, including a tubular member which can be fitted on a first of said rotating members, a first and a second annular sealing member surrounding the tubular member and provided with a first and a second fitting support respectively and corresponding sealing rings of elastomer material. The seal unit also includes an annular spacer member coaxial with the tubular member and acting together with the first and the second support to keep the first and second annular sealing members in their corresponding working positions.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: March 9, 2004
    Assignee: RFT S.p.A.
    Inventor: Mauro Sassi
  • Patent number: 6702295
    Abstract: A dynamic seal assembly has an outer carrier member formed of one-piece having an outer flange, an inner flange, and an intermediate portion presenting first and second shoulders. A PTFE seal member is disposed about the second shoulder and is compressed axially by a case member which, while the PTFE seal is compressed, is staked to the carrier to secure the seal. The carrier has an axially outwardly facing annular pocket accommodating a foam dust excluder into which a flange of a wear sleeve extends to protect the PTFE seal from debris. Additionally, the seal has a clamping ring having an axially extending first leg providing a second mating surface radially inwardly and generally parallel to the first mating surface of the outer member.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: March 9, 2004
    Assignee: Federal-Mogul World Wide, Inc.
    Inventors: John Christopher Kapcoe, Benjamin Cutler Clark
  • Patent number: 6702293
    Abstract: A seal member adapted to be mounted between a cylinder head cover and an ignition plug tube comprises a mount portion interposed radially movably between an upper surface of an annular stepped portion formed around an opening of the cylinder head cover for insertion of the ignition plug tube and a baffle plate. A first seal portion and a second seal portion project radially outward and inward, respectively, from the mount portion to be brought into contact with a peripheral surface of the annular stepped portion and the ignition plug tube, respectively. The second seal portion can be elastically deformed following relative radial movements between the mount portion and the ignition plug tube.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: March 9, 2004
    Assignees: Mahle Tennex Corporation, Keeper Co., Ltd.
    Inventors: Kazutoyo Endo, Norimasa Matsui
  • Patent number: 6692008
    Abstract: A sealing arrangement for closing off an end of a chamber formed between a plurality of rollers of a pressing apparatus, comprises a seal member made of a hard seal material such as carbon fiber material. The sealing arrangement is preferably a self-loaded sealing arrangement.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: February 17, 2004
    Assignee: Voith Paper Patent GmbH
    Inventor: David A. Beck
  • Patent number: 6666459
    Abstract: A radial shaft seal includes a supporting ring which is attached to at least one sealing ring made of a polymer material. The sealing ring has at least one sealing lip and an additional gasket is arranged on the side of the sealing lip facing away from the space to be sealed. The supporting ring is designed in one piece and has two radial projections arranged next to one another with an axial distance between them, where a circular additional gasket produced separately is arranged without adhesion in the gap formed by this distance and is under axial tension.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: December 23, 2003
    Assignee: Firma Carl Freudenberg
    Inventor: Werner Hufnagel