Patents by Inventor Rudolf Hauleitner
Rudolf Hauleitner 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: 11835089Abstract: A bearing assembly, particularly refrigerant lubricated bearing assembly, having at least an inner ring and an outer ring, which are rotatable to each other. At least one bearing ring is made from a nitrogen-alloyed stainless steel having a nitrogen (N) content of more than 0.6 wt.-%. A method for manufacturing such a bearing ring is also provided.Type: GrantFiled: July 2, 2021Date of Patent: December 5, 2023Assignee: Aktiebolaget SKFInventors: Rudolf Hauleitner, Mohamed Sherif
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Publication number: 20230383788Abstract: A bearing assembly, particularly refrigerant lubricated bearing assembly, having at least an inner ring and an outer ring, which are rotatable to each other. At least one bearing ring is made from a nitrogen-alloyed stainless steel having a nitrogen (N) content of more than 0.6 wt.-%. A method for manufacturing such a bearing ring is also provided.Type: ApplicationFiled: August 9, 2023Publication date: November 30, 2023Inventors: Rudolf Hauleitner, Mohamed Sherif
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Publication number: 20230235781Abstract: A multi-row rolling-element bearing includes first and second bearing rings and first and second rows of rolling elements therebetween. A cage between the first and second bearing rings has a first annular side part having a plurality of axially extending first bridge elements and a second annular side part having a plurality of axially extending second bridge elements connected to the first bridge elements to form bridges and to form pockets therebetween. At least one rolling element of the first row of rolling elements and at least one rolling element of the second row of rolling elements are located in each of the plurality of pockets.Type: ApplicationFiled: January 12, 2023Publication date: July 27, 2023Inventors: Ferdinand SCHWEITZER, Rudolf HAULEITNER
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Patent number: 11493242Abstract: A cooling system and methods of employing the same includes a refrigerant cycle for cycling refrigerant from a compressor to a condenser and from the condenser an evaporator unit, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly.Type: GrantFiled: November 15, 2019Date of Patent: November 8, 2022Assignee: AKTIEBOLAGET SKFInventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Patent number: 11493243Abstract: Disclosed is a cooling system comprising a refrigerant cycle for cycling refrigerant from at least a compressor unit for com-pressing gaseous refrigerant to a condenser unit for condensing gaseous refrigerant to liquid refrigerant, from the condenser unit to an evaporator unit for evaporating the liquid refrigerant to gaseous refrigerant, and from the evaporating unit back to the compressor unit, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly, wherein the at least one lubricating refrigerant supply line branches off from the refrigerant cycle at the condenser unit for providing refrigerant to the bearing assembly, and re-unites with the refrigerant cycle at the evaporator unit, for feeding back refrigerant from the bearing assembly to the refrigerant cycle.Type: GrantFiled: November 26, 2019Date of Patent: November 8, 2022Inventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Publication number: 20220018394Abstract: A bearing assembly, particularly refrigerant lubricated bearing assembly, having at least an inner ring and an outer ring, which are rotatable to each other. At least one bearing ring is made from a nitrogen-alloyed stainless steel having a nitrogen (N) content of more than 0.6 wt.-%. A method for manufacturing such a bearing ring is also provided.Type: ApplicationFiled: July 2, 2021Publication date: January 20, 2022Inventors: Rudolf Hauleitner, Mohamed Sherif
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Patent number: 11143236Abstract: A pair of hybrid ball bearings have stainless steel rings and ceramic balls and are configured such that when the first inner ring and the first outer ring are in contact with the first plurality of ceramic balls under zero measuring load and zero mounting load and the second inner ring and the second outer ring are in contact with the second plurality of ceramic balls under zero measuring load and zero mounting load a certain gap exists between either the inner rings or the outer rings. The gap is based on the diameter of the inner ring or on the pitch diameter of the balls and on whether the bearings have an X configuration or an O configuration.Type: GrantFiled: May 6, 2020Date of Patent: October 12, 2021Assignee: AKTIEBOLAGET SKFInventors: Hans Wallin, Rudolf Hauleitner
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Patent number: 11067129Abstract: A rolling bearing having an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The rolling bearing is media-lubricated or oil-free lubricated. The lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways. At first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid, preferably an oil-based preservative fluid. Also, a refrigerant compressor having such a rolling bearing.Type: GrantFiled: September 18, 2019Date of Patent: July 20, 2021Assignee: Aktiebolaget SKFInventors: Hans Wallin, Rudolf Hauleitner, Guillermo Enrique Morales Espejel
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Patent number: 11009035Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are configured with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.Type: GrantFiled: April 25, 2018Date of Patent: May 18, 2021Assignee: Aktiebolaget SKFInventors: Hans Wallin, Rudolf Hauleitner
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Publication number: 20210079953Abstract: A rolling bearing having an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The rolling bearing is media-lubricated or oil-free lubricated. The lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways. At first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid, preferably an oil-based preservative fluid. Also, a refrigerant compressor having such a rolling bearing.Type: ApplicationFiled: September 18, 2019Publication date: March 18, 2021Inventors: Hans Wallin, Rudolf Hauleitner, Guillermo Enrique Morales Espejel
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Patent number: 10753396Abstract: A Hybrid rolling bearing includes an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The outer raceway and the inner raceway are made from bearing steel, having a first surface RMS roughness Rq1. The rolling elements are made from a ceramic material and have second surface RMS roughnesses Rq2,i. At least one of the rolling elements has an increased surface RMS roughness Rq2,N, which is significantly higher than the RMS roughnesses Rq2,i, of the remaining rolling elements. The hybrid rolling bearing can be installed within a refrigerant compressor.Type: GrantFiled: September 5, 2018Date of Patent: August 25, 2020Assignee: Aktiebolaget SKFInventors: Rudolf Hauleitner, Guillermo Enrique Morales Espejel, Antonio Gabelli, Aidan Kerrigan, Charlotte Vieillard
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Publication number: 20200263733Abstract: A pair of hybrid ball bearings have stainless steel rings and ceramic balls and are configured such that when the first inner ring and the first outer ring are in contact with the first plurality of ceramic balls under zero measuring load and zero mounting load and the second inner ring and the second outer ring are in contact with the second plurality of ceramic balls under zero measuring load and zero mounting load a certain gap exists between either the inner rings or the outer rings. The gap is based on the diameter of the inner ring or on the pitch diameter of the balls and on whether the bearings have an X configuration or an O configuration.Type: ApplicationFiled: May 6, 2020Publication date: August 20, 2020Inventors: Hans Wallin, Rudolf Hauleitner
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Publication number: 20200166251Abstract: A cooling system and methods of employing the same includes a refrigerant cycle for cycling refrigerant from a compressor to a condenser and from the condenser an evaporator, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly. The lubricating refrigerant supply line including one or more filters, such as particle filters, acid filters, or desiccant filters.Type: ApplicationFiled: November 21, 2019Publication date: May 28, 2020Inventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Publication number: 20200166249Abstract: A cooling system and methods of employing the same includes a refrigerant cycle for cycling refrigerant from a compressor to a condenser and from the condenser an evaporator unit, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly.Type: ApplicationFiled: November 15, 2019Publication date: May 28, 2020Inventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Publication number: 20200166252Abstract: Disclosed is a cooling system comprising a refrigerant cycle for cycling refrigerant from at least a compressor unit for com-pressing gaseous refrigerant to a condenser unit for condensing gaseous refrigerant to liquid refrigerant, from the condenser unit to an evaporator unit for evaporating the liquid refrigerant to gaseous refrigerant, and from the evaporating unit back to the compressor unit, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly, wherein the at least one lubricating refrigerant supply line branches off from the refrigerant cycle at the condenser unit for providing refrigerant to the bearing assembly, and re-unites with the refrigerant cycle at the evaporator unit, for feeding back refrigerant from the bearing assembly to the refrigerant cycle.Type: ApplicationFiled: November 26, 2019Publication date: May 28, 2020Inventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Patent number: 10598217Abstract: An angular contact ball bearing includes an outer ring having an outer diameter D and a first rolling surface and an inner ring having an inner diameter d and a second rolling surface, and no more than one row of balls between the first rolling surface and the second rolling surface, each of the balls having a diameter Dw. The diameter Dw of the balls, the outer diameter D of the outer ring, and the inner diameter d of the inner ring satisfy the relationship: D w > 0.7 * ( D - d ) 2 .Type: GrantFiled: July 26, 2019Date of Patent: March 24, 2020Assignee: Aktiebolaget SKFInventors: Thomas Forster, Rudolf Hauleitner
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Patent number: 10544828Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are designed with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.Type: GrantFiled: December 20, 2017Date of Patent: January 28, 2020Assignee: AKTIEBOLAGET SKFInventors: Rudolf Hauleitner, Hans Wallin
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Patent number: 10527094Abstract: A Hybrid ball bearing including an outer raceway, an inner raceway, and a plurality of balls arranged between the inner raceway and the outer raceway. The outer raceway and the inner raceway are made from bearing steel and have a first surface RMS roughness Rq1. At least one ball of the plurality of balls is made from a ceramic material and has a second surface RMS roughness Rq2. In a mint condition, the roughness of the raceways Rq1 is 2 to 5 times higher than the roughness Rq2 of the at least one ball, as well as a refrigerant compressor comprising such a hybrid ball bearing.Type: GrantFiled: September 5, 2018Date of Patent: January 7, 2020Assignee: AKTIEBOLAGET SKFInventors: Guillermo Enrique Morales Espejel, Rudolf Hauleitner, Aidan Kerrigan
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Patent number: 10508684Abstract: An angular contact ball bearing includes an outer ring having an outer diameter D and a first rolling surface and an inner ring having an inner diameter d and a second rolling surface, and no more than one row of balls between the first rolling surface and the second rolling surface, each of the balls having a diameter Dw. The diameter Dw of the balls, the outer diameter D of the outer ring, and the inner diameter d of the inner ring satisfy the relationship: 2 ? D w D - d > 0.7 .Type: GrantFiled: October 4, 2017Date of Patent: December 17, 2019Assignee: AKTIEBOLAGET SKFInventors: Thomas Forster, Rudolf Hauleitner
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Publication number: 20190345977Abstract: An angular contact ball bearing includes an outer ring having an outer diameter D and a first rolling surface and an inner ring having an inner diameter d and a second rolling surface, and no more than one row of balls between the first rolling surface and the second rolling surface, each of the balls having a diameter Dw. The diameter Dw of the balls, the outer diameter D of the outer ring, and the inner diameter d of the inner ring satisfy the relationship: D w > 0.Type: ApplicationFiled: July 26, 2019Publication date: November 14, 2019Inventors: Thomas Forster, Rudolf Hauleitner