Patents Assigned to SKF
  • Patent number: 5191284
    Abstract: Device capable of detecting the rotational speed of two elements in relative such as the support elements of a vehicle wheel, in particular the rings of the roller bearing for the support the vehicle wheel, characterized in that an initial deflector or ring integral with the rotating ring of the bearing carries twin magnetized rings with pairs of poles of opposite sign, between which a magnetic sensor carried by a second deflector or support integral with the fixed ring of the bearing being is operatively inserted, the magnetic sensor being located between the n polar expansions, the number of which conforms to the pairs of opposing poles of twin magnetized rings.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: March 2, 1993
    Assignee: SKF Indsutrie S.p.A.
    Inventors: Roberto Moretti, Angelo Varvello
  • Patent number: 5186547
    Abstract: A roller bearing seal assembly for supporting the drive rolls of a continuous casting machine including an angle ring forming a sealing gap and a lamellar ring seal between the angle ring and a bearing or bearing housing. The angle ring has an axially directed shank and a radially oriented shank mounted in either the outer ring of the bearing, or in the bearing housing in such a way that its axially oriented shank projects beyond the end surface of the roller bearing or housing. The lamellar ring seal is installed between the radially oriented shank of the angle ring and the lateral surface of the inner ring of the bearing. A rotary shaft lip seal is installed on the side of the angle ring facing the interior of the bearing. The axially oriented shank of the angle ring extends into a ring-shaped groove in a drive roll end surface opposite the end surface of the roller bearing or housing.
    Type: Grant
    Filed: May 7, 1992
    Date of Patent: February 16, 1993
    Assignee: SKF GmbH
    Inventors: Helmut Muhl, Johann Mullner
  • Patent number: 5184505
    Abstract: Method for determining the extent to which noise occurs in a rotating roller bearing of a specific type lubricated with a specific lubricant, whereby an amount of the lubricant to be examined is applied to a roller bearing of the type mentioned, the inner race of the roller bearing is rotated for some time by means of a rotatable rod inserted in the inner race of the roller bearing until it interacts with it, and the vibrations occurring in the bearing are recorded by means of a vibration recorder which is in contact with the immobile outer race of the bearing, and a peak value is determined, following which these steps of the test cycle are repeated several times with new amounts of the same lubricant, characterized by the fact that a single roller bearing of the type specified is used in which every time, at the start of the steps of the test cycle, an amount of the lubricant to be tested is applied under pressure, whereby the amount of lubricant in the roller bearing which has been examined in a previous c
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: February 9, 1993
    Assignee: SKF Industrial Trading & Development Co. B.V.
    Inventor: Antonie van den Berg
  • Patent number: 5180980
    Abstract: Method for measuring the thickness of a lubricant film between two surfaces which are in motion with regard to one another, characterized by the fact that a lubricant with high relative permeability is used, whereby the polar pieces of an electromagnetic sensor are brought into contact with the lubricant film to be measured in such manner that they are bridged by the lubricant film.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: January 19, 1993
    Assignee: SKF Industrial Trading & Development Co.
    Inventors: Alejandro Blond, Gerhard Poll, Vedran Tadic
  • Patent number: 5177869
    Abstract: A double row, angular contact ball bearing comprises of an integral inner race ring and an integral outer race ring, the outer race ring having at least one circumferential depression between the rows of balls and the inner race ring having a circumferentially radially extending end member axially outside each row of balls. The present invention also relates to a method of manufacturing double row, angular contact ball bearings by shaping sheet metal or tubular work pieces to finished inner or outer race rings by rolling, pressing or deep drawing, introducing rows of balls between the race rings, shaping the race rings to final form by rolling or pressing, and rolling the rows of balls constantly about the circumferential periphery of the inner race ring during the rolling or pressing of the race rings.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: January 12, 1993
    Assignee: SKF Nova AB
    Inventor: Borje Andersson
  • Patent number: 5167496
    Abstract: A screw compressor, having a housing with an inlet and an outlet opening in which two or more rotors are rotatably mounted on bearings. The bearings are equipped with helically meshing profiles which operate tightly in conjunction with a closely fitted cylindrical part of the housing. The bearing devices or the rotors consist at least in part of fluid bearings.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: December 1, 1992
    Assignee: SKF Industrial Trading & Development Company B.V.
    Inventors: Bo O. Jacobsson, Antonio Gabelli
  • Patent number: 5165805
    Abstract: Roller bearing cage, especially for cylindrical roller bearings or needle bearings, which presses the rolling elements elastically in the radial direction against a raceway to prevent rippling, characterized in that, at least at one point (6), the cage (1) has notches (8) proceeding from the end surfaces (10) and a connecting part (11), which is rigid in the peripheral direction and which is located between the notches; and in that, in the peripheral direction, a recess (9), extending approximately across the width of the cage, is provided on one or both sides next to notches (8), this recess forming the boundaries of elastic sections (12).
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: November 24, 1992
    Assignee: SKF GmbH
    Inventors: Bernard Bauer, Klaus Kispert, Martin Schepp, Robert Stolz, Knut Mirring
  • Patent number: 5159742
    Abstract: A bearing, especially for the necks on the work rolls of a rolling mill, with at least one bearing outer ring surrounding the neck, which ring has a cylindrical lateral surface in the bore of a chock, where it is supported in the direction of its radial load by way of an oil film, characterized in that the bearing outer ring has at least one recess with two boundary walls opposite each other in the circumferential direction, between which a projection, held in a fixed position with respect to the chock in the circumferential direction, narrowly engages.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: November 3, 1992
    Assignee: SKF GmbH
    Inventor: Heinrich Winter
  • Patent number: 5156571
    Abstract: A homokinetic coupling wherein the torque transmitting elements include spherical elements flattened at two mutually opposed points, the flattened elements being in contact with the side walls of open slots within the wall of the hollow spherical element of the inner coupling member.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: October 20, 1992
    Assignee: SKF Industrial Trading & Development Co., B.V.
    Inventors: Hendrikus J. Kapaan, Stanislaw Kruk, Paul Richardson, Wilhelm L. F. van Wijk
  • Patent number: 5156248
    Abstract: A clutch thrust bearing includes a rolling bearing (1) equipped with an inner and an outer ring, one of the rings (6) being in permanent contact with a clutch member; and a guide sleeve (12) with a radial flange (13) relative to which the rolling bearing (1) can be displaced radially. The guide sleeve is axially slidable with respect to a guide tube under the action of a control member (17) having end fingers (18) for moving a metal support plate (15) integral with the radial flange (13) of the guide sleeve. The improvement includes contact shoes (19) which receive the end fingers (18) of the control member and are located between the fingers and the metal support plate of the radial flange.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: October 20, 1992
    Assignee: SKF France
    Inventor: Fabrice Caron
  • Patent number: 5152615
    Abstract: A roller bearing cage is made of a bent strip of sheet metal having abutting ends that are connected to one another, the cage being comprised of two end rings and a cage frame surrounding the windows, the windows retaining and guiding the rollers. In order to permit the manufacture of rolling element bearing cages of different reference circle diameters while using only one tool for rolling elements with a specific diameter d, the center distance between adjacent the cage windows in the circumferential direction is .pi.d/2.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: October 6, 1992
    Assignee: SKF GmbH
    Inventors: Bernhard Bauer, Heinz Reichle, Robert Stolz
  • Patent number: 5149207
    Abstract: A seal device for wheel hub bearings consists of a centrifugation device (1) equipped with a seal (3) and a screen or shield (2) mounted onto the outer fixed race (11). The centrifugation device (1) is fixed to the inner rotating race (10) of the bearing. The seal (3) is provided with lips (7,8) which slide respectively against the outer race (11) of the bearing and against the shield (2) mounted on this race. The centrifugation device (1) and the shield (2) are shaped and positioned between the two races so as to form a first chamber (21) open towards the outside of the bearing, a second closed intermediate chamber (22) and a third chamber (23) open towards the inner parts of the bearing.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: September 22, 1992
    Assignee: SKF Industrie S.p.A.
    Inventor: Angelo Vignoito
  • Patent number: 5145379
    Abstract: In a device for the electrical connection of preferably ALS sensors in or on roller bearings of truck wheels, a seat casing is provided for the transfer of the ALS sensor's signals from one side of the bearing ring to the other, which seat casing is located between the bearing ring and, e.g., the shaft. It serves as signal conductor or it is equipped with conductors consisting of wires, flat band conductors, conductive layers, or the like. The connection to the ALS sensor or a plug ring with a connecting cord, occurs preferably by way of slip rings 10, to exclude all operational interference induced by a creeping motion in a circumferential direction of the otherwise fixed bearing ring. In addition, without conductors or a cord the bearing will be simpler to assemble.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: September 8, 1992
    Assignee: SKF GmbH
    Inventors: Sven Benktander, Heinz Kiener, Jurgen Kober
  • Patent number: 5145260
    Abstract: A rolling bearing for longitudinal movement has a cage with its inner surface surrounding a shaft. The cage has axially extending races for loaded balls and axially extending return races for unloaded balls, as well as a cover on each of its two ends. Each cover has turn around races connected between the ends of a race and a return race. The races, return races and turn around races have slits extending along the races and open to the shaft. Each turn around race in the covers is bounded by a curved shoulder section on the inner surface of the cage and extending along the turn around race, and a curved inner wall section of the cover extending parallel to the curved shoulder wall section of the cage.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: September 8, 1992
    Assignee: SKF Linearsysteme GmbH
    Inventors: Ludwig Edelmann, Hermann Glockner, Zoltan Laszlofalvi, Uwe Mayer, Lothar Walter
  • Patent number: 5143001
    Abstract: A process for transferring environmentally harmful substances which are easily leachable from openly discarded waste material, and which to a large proportion consists of inorganic material, such as spent spot linings for aluminum electrolysis cells, into gaseous form or into leach stable compounds, includes the steps of heating that the material in finely ground form is heated and in that reagents such as silica, water and oxygen are added in a cyclone furnace (1) which includes a heat source (2) for example a plasma generator, and a cylindrical furnace vessel (10). By feeding the waste material and the reagents via a mixing and prereaction chamber (3) which is located between the high temperature source and the vessel (10), a very high proportion of the added materials are reacted in the furnace.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: September 1, 1992
    Assignee: SKF Plasma Technologies
    Inventor: Sven Eriksson
  • Patent number: 5139425
    Abstract: The rolling bearing with rotating electrical contacts comprises inner (7, 8) and outer (2) races gripping around the rolling elements (5, 6) and is equipped with means permitting the passage of an electrical current between two mechanical components, of which one is rotationally moveable in relation to the other. For this purpose at least one conductive cartridge (21) of generally annular form is mounted substantially in a frontal radial plane of the bearing, the said cartridge comprising two conductive armatures (22, 23), one being able to rotate in relation to the other, each armature being integral with one of the races of the rolling mechanism and at least one conductive element (29) pressed against one of the armatures (22) by at least one conductive elastic element (27) in contact with the other armature (23).
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: August 18, 1992
    Assignee: SKF France
    Inventors: Bernard Daviet, Claude Lamy, Michel Descombes
  • Patent number: 5136777
    Abstract: Attachment means for mounting a first annular member such as a bearing ring having a first seating surface to a second member, such as a housing. The bearing ring has a plurality of recesses formed therein and is made of a material having a predetermined hardness. The housing has a second seating surface and a contact surface disposed angularly to the second seating surface and a fillet surface defining at least one narrow intermediate space at the juncture of the said second seating surface and contact surface. The recesses in said first seating surface open toward the internal end surface and open out into the intermediate spaces, whereas, at the end facing away from this end surface, the recesses are closed off by a boundary wall. By this arrangement, during assembly of the bearing ring in the bore of the housing or to a journal, material from the housing or journal is removed to fill the recesses and thereby lock the bearing ring in place.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: August 11, 1992
    Assignee: SKF GmbH
    Inventors: Uwe Brockmuller, Hans Freund
  • Patent number: 5135236
    Abstract: A sealed mounting consisting of a bearing with an inner ring, and axle or shaft with a lateral surface corresponding essentially to the outside diameter of the inner ring, a seating surface stepped down from that lateral surface to correspond to the bore of the inner ring, and a seal located between the inner ring and the outer ring. The seal has an essentially cylindrical seating section of elastic material in the bore. This section is seated partially on the inner ring and partially on the lateral surface of the axle or shaft, and is provided with at least one sealing projection, which cooperates with the outer ring of the bearing or the like.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: August 4, 1992
    Assignee: SKF GmbH
    Inventor: Stanislaw Kruk
  • Patent number: 5132616
    Abstract: Polarized magnetic ring for determining the speed of a rotating element of the type placed on the periphery of the outer rotating ring of the wheel hub bearing and which has the polarized surface facing a sensor for detecting the speed of rotation of the wheel hub, characterized in that a metal sleeve that holds it tightly on the bearing ring is slipped over the magnetic ring.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: July 21, 1992
    Assignee: RIV-SKF Officine di Villar Persosa S.p.A.
    Inventor: Angelo Vignotto
  • Patent number: 5131763
    Abstract: Wheel bearing hub for a vehicle, equipped with a pulser (16) and with a sensor (18). The pulser is fitted onto the rotating element (1) of the hub and comprises a protective part which externally encases the sensor head (17) sealingly, so as to isolate the latter from what is variously thrown up from the external environment.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: July 21, 1992
    Assignee: SKF France
    Inventor: Fabrice Caron