Patents Assigned to SKF
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Patent number: 4763774Abstract: The invention refers to a transport device, which incorporates an endless belt. At the supply position for the objects to be transported, this belt has an ascending direction and is provided with mobile rollers at a certain distance above the belt and spaced apart so much that there is space only for one object between two adjacent rollers.Type: GrantFiled: March 20, 1987Date of Patent: August 16, 1988Assignee: AB SKFInventor: Lars J. Johansson
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Patent number: 4762207Abstract: An automatic adjustment arrangement for disk brakes has a flanged threaded nut and a threaded spindle threadedly coupled thereto arranged between the brake piston and the hand brake piston. The flange of the threaded nut is axially form-locked and radially displaceable relative to the brake piston. The threaded spindle is rotatably supported in a rolling bearing which is radially displaceable. The hand brake piston and threaded spindle are frictionally coupled. The extension of the adjustment member is produced by rotation of the threaded spindle. To avoid malfunctions, an automatic centering of the entire adjustment element relative to the brake piston as well as relative to the housing is provided. Manufacturing and assembly errors are thereby compensated for. The positions of the threaded spindle and threaded nut can be interchanged.Type: GrantFiled: July 7, 1987Date of Patent: August 9, 1988Assignee: SKF GmbHInventors: Armin Olschewski, Manfred Brandenstein, Horst-Manfred Ernst, Robert Stolz, Gunter Neder
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Patent number: 4762480Abstract: Rotary pump comprising a housing having a bore and a first adjacent lateral side wall having at least one inlet slit and a second adjacent lateral side wall having at least one outlet slit of at least equal size to said inlet slit for flow of medium axially therethrough, said slits in said lateral side walls defining the path of flow for said medium from said inlet axially directly into said bore and then from said bore axially directly to said outlet slit, a rotor mounted in the bore for rotation about an axis generally parallel to and eccentric to the bore axis, a plurality of vanes pivotally mounted on the periphery of the rotor having free ends in sliding sealing contact with said bore, each vane having lateral surfaces having an inner edge facing the rotor and an outer edge facing the bore which edges on rotation of the rotor pass over an inner boundary edge of the inlet and outlet slits facing the bore of the housing, said inlet slit and outlet slit, curving along an arc around the rotational axis of roType: GrantFiled: March 6, 1987Date of Patent: August 9, 1988Assignee: SKF GmbHInventors: Otmar Winkler, Heinz Peter, Egon Pfaller
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Patent number: 4761082Abstract: A rolling bearing comprising at least one outer and one inner race situated coaxially therein and a row of rolling members situated in a space between these races and first and second seals for sealing the space between the races off from the outside surroundings on either side of the rolling members, to prevent a lubricant present from escaping to the outside and to prevent foreign matter from penetrating into the space from outside, the first seal being generally annular and the second seal comprises a sealing lip that is in communication with one of the races and having an inwardly directed side which rests springily against the other race, the first annular seal having an end portion that lies behind the inwardly directed side of the sealing lip, at a short distance from the other race thereby defining first, open, slot-shaped annular space between the seals and the said inner race and which space contains a quantity of magnetic fluid, and a magnet forming a magnetic field whereby such fluid is held withiType: GrantFiled: April 16, 1987Date of Patent: August 2, 1988Assignee: SKF Industrial Trading and Development Company, B.V.Inventor: Antonio Gabelli
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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: 4755065Abstract: A cage for a linear or rotationally guided rolling bearing has two uniformly spaced apart smooth boundary surfaces extending in the rolling direction, the cage having pockets adjacent one another in the rolling direction for receiving at least one rolling body. Each pocket has at least one recess pressed in the immediate vicinity of at least one edge in the opposed surfaces of the cage for the production of a holding groove. The walls of the holding groove closely surround dimensionally decreasing sections of the rolling bodies. Each holding groove is formed on the end of one or more holding tongues extending into the pockets. The recesses of the boundary surfaces are in the form of grooves with constant cross section, are pressed only in the holding tongues, and extend across the entire width of the holding tongues.Type: GrantFiled: March 6, 1987Date of Patent: July 5, 1988Assignee: SKF Linearsysteme GmbHInventors: Lothar Walter, Uwe Mayer, Ludwig Edelmann
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Patent number: 4752149Abstract: A pretensioned ball and socket joint assembly comprising an outer ring with a spherical bore surface and two inner ring parts, biasing means urging the inner ring parts axially outward against the bore surface of the outer ring. The outer ring is a unitary single piece and has means for the introduction of the inner ring parts and the biasing means.Type: GrantFiled: November 28, 1986Date of Patent: June 21, 1988Assignee: SKF GmbHInventor: Otto Paeschke
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Patent number: 4752280Abstract: A tensioning arrangement for a drive belt includes a support, a tension roller rotatably mounted on one end of the support, a swivel bearing arranged on the support at a distance from the tension roller, a swivel-damping element in the form of a linear-acting frictional damper having a master piston and a slave piston arranged in and separately frictionally engaging a cylinder, a spring arranged concentrically around the cylinder and coupled to the master piston, and a spring arranged inside the cylinder and coupled to the slave piston. The displacement of the master piston in one direction is opposed by the frictional forces separately acting on both pistons, whereas the displacement of the master piston in the other direction is opposed by the frictional forces acting on only the master piston.Type: GrantFiled: October 14, 1986Date of Patent: June 21, 1988Assignee: SKF GmbHInventors: Manfred Brandenstein, Roland Haas, Ludwig Edelmann, Gerhard Herrman, Rudiger Hans
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Patent number: 4749288Abstract: A support for a rolling bearing is provided with an essentially annular transition region between sleeve-shaped portion and a flange connected thereto, the flange having a plurality of circumferentially distributed, axially extending mounting holes. The transition region has a concavely curved or linearly inclined profile. A substantially spherical base surface is provided axially of each mounting hole, the base surface connecting the rim of the hole with the inner surface of a substantially part-cylindrical recess in the transition region, the recess having a diameter greater than the hole diameter.Type: GrantFiled: October 3, 1986Date of Patent: June 7, 1988Assignee: SKF GmbHInventors: Gerhard Tilch, Paul-Gerhard Hoch, Uwe Brockmuller
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Patent number: 4747320Abstract: In a device for producing self-locking properties of a screw and nut device the nut co-operates with a torque-transmitting part which is rotatable in relation to the nut. Torque is transmitted via a portion on the torque-transmitting part, which portion is arranged in a space between two opposing surfaces on the nut. A helical spring is arranged in a thread around a threaded shaft and has an end portion inserted into the space. The helical portion of the spring has a loose fit in the thread when the nut is driven by the part, whereas the spring is contracted against the shaft when the end portion contacts one of the opposing surfaces of the nut and thereby brakes the rotation if the nut tends to be rotated by an axial load on the nut and the part is disconnected.Type: GrantFiled: November 20, 1986Date of Patent: May 31, 1988Assignee: SKF Nova ABInventor: Sven W. Nilsson
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Patent number: 4746229Abstract: The invention refers to a device for supporting and carrying, e.g. a centrifugal rotor. For making possible an adjustment of the rotor thus that any possible unbalance is eliminated as far as possible, the rotor is supported upon a supporting element, on which it is radially displaceable. Between the rotor and the supporting element is provided a bearing part. This is rotatable and displaceable laterally on the supporting element and carries the rotor with means, which incorporate deformable members, which allow a tilting of the rotor upon the bearing part.Type: GrantFiled: June 18, 1987Date of Patent: May 24, 1988Assignee: Aktiebolaget SKFInventor: Bjorn Lind
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Patent number: 4744676Abstract: The invention relates to a gas bearing with a bearing surface arranged on a gas permeable element to which a pressure medium can be supplied from an external source. The bearing surface is arranged on a less permeable surface layer, through which holes are made. In order to ensure good gas flow through the holes, the holes extend into the porous material a distance corresponding to at least half the diameter of the holes, and those portions of the holes which are situated inside said surface layer are limited by porous material.Type: GrantFiled: December 29, 1986Date of Patent: May 17, 1988Assignee: SKF Nova ABInventor: Bjorn Lind
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Patent number: 4744442Abstract: A device for supplying a lubricant comprises a receptacle to contain the lubricant with an opening arranged in the bottom thereof. A piston member is sealingly displaceable along the walls inside the receptacle and located in initial position near the top of the receptacle. At least one extendable or expandable member is supported by the receptacle at the circumference over the lubricant present in the receptacle with a bottom portion located near and above the piston member which member contains an electrolyte. At least one galvanic element is supported over the electrolyte inside the receptacle, and a flexible member and rupturable support are provided for bringing the galvanic element into contact with the electrolyte. The said extendable or expandable member with the electrolyte present therein and the galvanic element form a separate assembly detachable from the receptacle.Type: GrantFiled: June 20, 1986Date of Patent: May 17, 1988Assignee: SKF Industrial Trading and Development Company B.V.Inventors: Johan C. Bras, Antonio Gabelli, Emanuel M. de Blic
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Patent number: 4744679Abstract: A cage for retaining rolling elements within a bearing assembly, the cage comprising an annular member of plastic having openings spaced around the member for receiving and holding the rolling elements, the surfaces of the openings contacting the rolling elements having thereon a deposited layer of a non-plastic material which is much harder than the soft plastic and is capable of resisting the embedment of loose particles therein. The layer hard material is formed by ionic spray discharge or ion implanation and consists of chromium nitride.Type: GrantFiled: September 15, 1986Date of Patent: May 17, 1988Assignee: SKF Industrial Trading and Development Co. B.V.Inventors: Martin B. Verburg, Graham E. Hollox
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Patent number: 4741469Abstract: A clamping ring, intended to enclose and exert a clamping force against a cylindric element and incorporating a slot and a clamping means enclosing the slot, is provided with stepladder-shaped surface elements on each side of the slot, for making possible a compact design and favorable force absorption in the clamping means, whereby the clamping means is composed by several separate sections, enclosing one step each.Type: GrantFiled: July 23, 1987Date of Patent: May 3, 1988Assignee: SKF Nova ABInventor: Rune Adolfsson
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Patent number: 4740358Abstract: A device for disinfecting the gap between two relatively movable elements such as a shaft and housing wherein a gap is defined by those elements and the gap contains a gaseous medium which is heated by an adjacent heating loop to provide a germicidal barrier in the gap.Type: GrantFiled: October 9, 1986Date of Patent: April 26, 1988Assignee: Aktiebolaget SKFInventor: Bjorn Lind
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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: 4732495Abstract: An arrangement for adjustment of a rolling bearing which is radially and axially movable inside a sleeve. A helical spring is arranged with prestress between the base of the sleeve and a side surface of the outer ring of the rolling bearing. The terminal windings of the spring are radially restrained by form-locking with projections on the base and the side surface.Type: GrantFiled: December 1, 1986Date of Patent: March 22, 1988Assignee: SKF GmbHInventors: Manfred Brandenstein, Rudolf Wolter, Horst M. Ernst
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Patent number: 4729252Abstract: A bearing having two rows of rolling elements has a flange extending outwardly from its outer ring. The flange is affixed to a facing surface inside of an aluminum housing, with a portion of the outer ring extending, with a play fit, in a bore of the housing.Type: GrantFiled: January 29, 1981Date of Patent: March 8, 1988Assignee: SKF Kugellagerfabriken GmbHInventors: Wolfgang Huber, Dietmar Frase, Ludwig Feuerer
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Patent number: D294762Type: GrantFiled: March 15, 1985Date of Patent: March 15, 1988Assignee: Aktiebolaget SKFInventors: Goran Abbestam, Leif Lachonius