Patents by Inventor Baozhu Liang
Baozhu Liang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10641333Abstract: A cage segment for a rolling-element bearing cage includes first and second side elements connected by a bridge extending in a longitudinal direction. A first attaching element on the first side element extends away from the bridge in a first direction parallel to the longitudinal axis and a second attaching element on the second side element extends away from the bridge in a second direction parallel to the longitudinal axis. The first and second attaching elements are configured to receive a wire or cable for connecting the cage segments to other cage segments, and the first attaching element is offset from the longitudinal axis in a first direction by a first distance and the second attaching element is offset from the longitudinal axis in a second direction opposite the first direction by a second distance.Type: GrantFiled: December 10, 2018Date of Patent: May 5, 2020Assignee: AKTIEBOLAGET SKFInventors: Sabine Hofmann, Baozhu Liang
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Publication number: 20190203772Abstract: A cage segment for a rolling-element bearing cage includes first and second side elements connected by a bridge extending in a longitudinal direction. A first attaching element on the first side element extends away from the bridge in a first direction parallel to the longitudinal axis and a second attaching element on the second side element extends away from the bridge in a second direction parallel to the longitudinal axis. The first and second attaching elements are configured to receive a wire or cable for connecting the cage segments to other cage segments, and the first attaching element is offset from the longitudinal axis in a first direction by a first distance and the second attaching element is offset from the longitudinal axis in a second direction opposite the first direction by a second distance.Type: ApplicationFiled: December 10, 2018Publication date: July 4, 2019Inventors: Sabine Hofmann, Baozhu Liang
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Patent number: 10138941Abstract: A bearing ring for a rolling-element bearing including an axially extending outer surface, two radially extending side surfaces, an inner surface configured to at least partially contact a rolling element and at least one radially extending recess in the inner surface that is configured to work together with a lifting tool to allow the bearing ring to be lifted by the lifting tool. Also a method of lifting a bearing ring having such a recess.Type: GrantFiled: October 27, 2015Date of Patent: November 27, 2018Assignee: AKTIEBOLAGET SKFInventors: Sabine Hofmann, Baozhu Liang, Johannes Ullmann
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Patent number: 10107337Abstract: A bearing assembly includes a bearing for supporting a first machine part relative to a second machine part, a seal assembly configured to seal a first space in a region of the bearing relative to a second space, a pressure equalization passage fluidically connecting the first space and the second space, a valve configured to open and close the pressure equalization passage, and a controller configured to control the valve.Type: GrantFiled: December 18, 2014Date of Patent: October 23, 2018Assignee: AKTIEBOLAGET SKFInventors: Baozhu Liang, Jesko-Henning Tanke
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Patent number: 9939018Abstract: A rolling bearing includes an inner ring, an outer ring, a plurality of rolling elements disposed between the inner ring and the outer ring, and a plurality of cage segments separating circumferentially adjacent ones of the plurality of rolling elements. Each of the cage segments has an axial bridge portion and side plates at axially opposite ends of the bridge portion, each of the side plates having a convex end and a concave end circumferentially spaced from the convex end. The convex end of a first one of the side plates contacts the concave end of a second one of the side plates.Type: GrantFiled: April 24, 2015Date of Patent: April 10, 2018Assignee: AKTIEBOLAGET SKFInventors: Sabine Hofmann, Baozhu Liang
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Patent number: 9850948Abstract: A rolling-element bearing cage or cage element includes at least one axial bridge region having first and second guide surfaces, the first guide surface and the second guide surface each have a recessed region axially between first and second non-recessed regions, at least one V-shaped receiving space in a radial outer surface of the rolling-element bearing cage or cage element configured to receive lubricant, and first and second fluid channels extending from the at least one receiving space to the recessed regions of the first and second guide surfaces. The fluid channels have rectangular cross sections, are about as wide as a width of the recessed regions, and are angled at an acute angle to a radial direction, and the receiving space is approximately as wide as the recessed regions.Type: GrantFiled: December 10, 2014Date of Patent: December 26, 2017Assignee: AKTIEBOLAGET SKFInventors: Sabine Hofmann, Baozhu Liang
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Publication number: 20170328412Abstract: A bearing ring for a rolling-element bearing including an axially extending outer surface, two radially extending side surfaces, an inner surface configured to at least partially contact a rolling element and at least one radially extending recess in the inner surface that is configured to work together with a lifting tool to allow the bearing ring to be lifted by the lifting tool. Also a method of lifting a bearing ring having such a recess.Type: ApplicationFiled: October 27, 2015Publication date: November 16, 2017Applicant: Aktiebolaget SKFInventors: Sabine Hofmann, Baozhu Liang, Johannes Ullmann
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Patent number: 9816896Abstract: A bearing arrangement having an inner race and an outer race, between which rolling elements are disposed, the rolling elements being accommodated in a bearing cage. At least one rolling element is designed as a sensor rolling element, and the bearing cage is designed as a pin cage having multiple pin elements that at least partially accommodate the rolling elements and the at least one sensor rolling element, and a sensor rolling element for a bearing arrangement of this kind are disclosed.Type: GrantFiled: August 29, 2016Date of Patent: November 14, 2017Assignee: AKTIEBOLAGET SKFInventors: Paul Meaney, Nicolaas Simon Willem Den Haak, Matthias Hofmann, Baozhu Liang, Hans-Juergen Liesegang
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Publication number: 20170198752Abstract: A rolling bearing includes an inner ring, an outer ring, a plurality of rolling elements disposed between the inner ring and the outer ring, and a plurality of cage segments separating circumferentially adjacent ones of the plurality of rolling elements. Each of the cage segments has an axial bridge portion and side plates at axially opposite ends of the bridge portion, each of the side plates having a convex end and a concave end circumferentially spaced from the convex end. The convex end of a first one of the side plates contacts the concave end of a second one of the side plates.Type: ApplicationFiled: April 24, 2015Publication date: July 13, 2017Applicant: Aktiebolaget SKFInventors: Sabine Hofmann, Baozhu Liang
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Patent number: 9618043Abstract: A bearing ring for a roller bearing includes a raceway configured to support at least one rolling-element roller and a flange at an end of the raceway extending away from the raceway and having an abutment surface for guiding the at least one rolling-element roller on the raceway. The abutment surface has a curvature that decreases monotonically from a starting point on the abutment surface to an end of the abutment surface, and the abutment surface includes at least one strongly monotonically decreasing segment.Type: GrantFiled: May 24, 2012Date of Patent: April 11, 2017Assignee: AKTIEBOLAGET SKFInventors: Baozhu Liang, Michael Reugels
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Publication number: 20170059448Abstract: A bearing arrangement having an inner race and an outer race, between which rolling elements are disposed, the rolling elements being accommodated in a bearing cage. At least one rolling element is designed as a sensor rolling element, and the bearing cage is designed as a pin cage having multiple pin elements that at least partially accommodate the rolling elements and the at least one sensor rolling element, and a sensor rolling element for a bearing arrangement of this kind are disclosed.Type: ApplicationFiled: August 29, 2016Publication date: March 2, 2017Applicant: Aktiebolaget SKFInventors: Paul Meaney, Nicolaas Simon Willem Den Haak, Matthias Hofmann, Baozhu Liang, Hans-Juergen Liesegang
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Patent number: 9541130Abstract: A rolling-element bearing includes inner and outer rings and a cage between the rings, the cage having a plurality of cage segments with lateral boundary walls defining a receiving pocket for a rolling element having a diameter Dw, the pockets being dimensioned such that in a load-free state the rolling elements are positionable in the receiving pockets with a circumferential clearance (c) on the pitch circle between adjacent boundary walls of the pocket such that the clearance satisfies the relationship: cmax?c?Cmin, where: cmin=0.01*Dw?0.5 mm and cmax=0.02*Dw?0.4 mm, and wherein the diameter (Dw) of the rolling-element bearing is at least 50 mm.Type: GrantFiled: April 11, 2014Date of Patent: January 10, 2017Assignee: AKTIEBOLAGET SKFInventors: Baozhu Liang, Jesko-Henning Tanke
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Publication number: 20170002865Abstract: A rolling-element bearing cage or cage element includes at least one axial bridge region having first and second guide surfaces, the first guide surface and the second guide surface each have a recessed region axially between first and second non-recessed regions, at least one V-shaped receiving space in a radial outer surface of the rolling-element bearing cage or cage element configured to receive lubricant, and first and second fluid channels extending from the at least one receiving space to the recessed regions of the first and second guide surfaces. The fluid channels have rectangular cross sections, are about as wide as a width of the recessed regions, and are angled at an acute angle to a radial direction, and the receiving space is approximately as wide as the recessed regions.Type: ApplicationFiled: December 10, 2014Publication date: January 5, 2017Applicant: Aktiebolaget SKFInventors: Sabine HOFMANN, Baozhu LIANG
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Publication number: 20160312833Abstract: A bearing assembly includes a bearing for supporting a first machine part relative to a second machine part, a seal assembly configured to seal a first space in a region of the bearing relative to a second space, a pressure equalization passage fluidically connecting the first space and the second space, a valve configured to open and close the pressure equalization passage, and a controller configured to control the valve.Type: ApplicationFiled: December 18, 2014Publication date: October 27, 2016Applicant: Aktiebolaget SKFInventors: Baozhu Liang, Jesko-Henning Tanke
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Patent number: 9458886Abstract: A first rolling-element guided cage segment of a tapered roller bearing has first and second circumferential ends and first and second mutually opposing circumferential bridges extending between the circumferential ends and first and second mutually opposing connecting bridges connecting the first and second circumferential bridges. Inner pocket sides of the circumferential bridges and the connecting bridges form a pocket for receiving a rolling element. A first positioning aid is located at the first circumferential end and a second positioning aid is located at the second circumferential end, the positioning aids being configured such that a correct-position arrangement of adjacent cage segments is recognizable from the interaction of the first positioning aid and the second positioning aid.Type: GrantFiled: April 22, 2013Date of Patent: October 4, 2016Assignee: AKTIEBOLAGET SKFInventors: Matthias Gessendorfer, Baozhu Liang, Winfried Oestreicher, Ralf Wahler
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Patent number: 9382944Abstract: A bearing having grease lubrication includes a first ring and a second ring. A plurality of screw holes axially extend through the first ring. A first axial end of the first ring is affixed to a housing by a plurality of screws extending from the housing into the respective screw holes. A first bore is defined in the first ring adjacent to a second axial end of the first ring. The first bore intersects and fluidly communicates with one of the screw holes such that grease is dischargeable therethrough.Type: GrantFiled: July 5, 2011Date of Patent: July 5, 2016Assignee: AKTIEBOLAGET SKFInventors: Matthias Hofmann, Werner Horn, Holger Kristandt, Baozhu Liang, Edgar Pickel, Ingo Schulz, Mathias Seuberling
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Patent number: 9366293Abstract: A tapered roller bearing includes cage segments each having a pocket that retains one conical rolling element. The pocket is formed by two mutually-opposing circumferential bridges, which each extend between first and second circumferential ends of the cage segment, and at least two mutually-opposing connecting bridges, which connect the two circumferential bridges. The circumferential and connecting bridges have pocket sides, which delimit the pocket. The connecting bridges disposed in the region of the first and second circumferential ends each have a concavely-shaped first guide surface on their pocket and circumferential sides that partially enclose one rolling element. When a rolling element is disposed between the first circumferential end of one cage segment and the second circumferential end of the adjacent cage segment, the circumferential bridges of the two adjacent cage segments do not touch during operation.Type: GrantFiled: December 7, 2011Date of Patent: June 14, 2016Assignee: AKTIEBOLAGET SKFInventors: Matthias Gessendorfer, Baozhu Liang, Winfried Oestreicher, Ralf Wahler
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Patent number: 9360050Abstract: A bearing ring (160, 260, 310, 410) exhibiting an inner (155, 255) and an outer (140, 240) periphery, also exhibiting a raceway (121, 221) for rolling elements on one of said peripheries, the bearing ring exhibiting a gear structure (131-138, 231-238) on one of said peripheries, as well as exhibiting at least one welding joint (151, 251). The welding joint has been formed by flash butt welding. Preferably, the gear structure (131-138, 231-238) and/or the raceway (121, 221) have been formed by rolling, machining or a combination thereof.Type: GrantFiled: May 27, 2011Date of Patent: June 7, 2016Assignee: AKTIEBOLAGET SKFInventors: Patrik Dahlman, Baozhu Liang
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Publication number: 20160084310Abstract: A rolling-element bearing includes inner and outer rings and a cage between the rings, the cage having a plurality of cage segments with lateral boundary walls defining a receiving pocket for a rolling element having a diameter Dw, the pockets being dimensioned such that in a load-free state the rolling elements are positionable in the receiving pockets with a circumferential clearance (c) on the pitch circle between adjacent boundary walls of the pocket such that the clearance satisfies the relationship: cmax?c?Cmin, where: cmin=0.01*Dw?0.5 mm and cmax=0.02*Dw?0.4 mm, and wherein the diameter (Dw) of the rolling-element bearing is at least 50 mm.Type: ApplicationFiled: April 11, 2014Publication date: March 24, 2016Applicant: Aktiebolaget SKFInventors: Baozhu Liang, Jesko-Henning Tanke
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Patent number: 9284983Abstract: A roller bearing element for a large roller bearing includes the following features: at least one contact zone for a roller bearing counter element, the contact zone has an induction-hardened surface layer, the roller bearing element is comprised of a steel, which includes an admixture of carbon of at least 0.46 mass %.Type: GrantFiled: May 6, 2010Date of Patent: March 15, 2016Assignee: AKTIEBOLAGET SKFInventors: Baozhu Liang, Ulrike May, Gerhard Wagner, Claus Rumpel