Patents by Inventor Gustaf A. Larsson
Gustaf A. Larsson 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: 11998931Abstract: A centrifugal separator includes a rotor arrangement and a drive arrangement. The centrifugal separator includes a generator for generating an electric current. The generator is configured for continuously generating a current during a full revolution of the rotor arrangement. The current is utilised for supplying electric current to a user of electric energy arranged in the rotor arrangement.Type: GrantFiled: June 11, 2018Date of Patent: June 4, 2024Assignee: ALFA LAVAL CORPORATE ABInventor: Per-Gustaf Larsson
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Patent number: 11872568Abstract: A centrifugal separator includes a rotor arrangement and a drive arrangement. A user of electric energy is arranged in the rotor arrangement. The centrifugal separator includes a rotary transformer, the rotary transformer including a transformer stator and a transformer rotor. The transformer stator and the transformer rotor are arranged adjacent to each other with an airgap therebetween. The transformer rotor includes a secondary coil and is rotatable together with the rotor arrangement. The secondary coil is electrically connected to the user of electric energy arranged in the rotor arrangement for providing the user of electric energy with an electric current. The user of electric energy may be an actuator, and/or a sensor, and/or a control unit.Type: GrantFiled: February 19, 2019Date of Patent: January 16, 2024Assignee: ALFA LAVAL CORPORATE ABInventor: Per-Gustaf Larsson
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Publication number: 20230402771Abstract: A power cable accessory assembly including: a first power cable including: first conductor, and a first electrical insulation layer arranged around the first conductor, wherein the first electrical insulation layer includes a first insulation groove extending circumferentially along an outer surface of the first electrical insulation layer, a connection sleeve including: a first axial end opening receiving an end portion of the first conductor protruding axially from the first electrical insulation layer, and a first locking sleeve groove extending circumferentially along an outer surface of the connection sleeve; and a first locking sleeve including: a first radially inwards extending flange engaging with the first insulation groove and a second radially inwards extending flange engaging with the first locking sleeve groove to restrict axial movement between the first electrical insulation layer and the connection sleeve, wherein the first radially inwards extending flange has a first radial dimension that dType: ApplicationFiled: June 2, 2023Publication date: December 14, 2023Inventor: Gustaf Larsson
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Publication number: 20230128374Abstract: A separation system for separating a liquid mixture includes a centrifugal separator. The centrifugal separator includes a stationary frame, a rotatable assembly and a drive unit for rotating the rotatable assembly relative the frame around an axis of rotation. The separator further includes a feed inlet for receiving a liquid mixture to be separated, a first liquid outlet for discharge of a separated liquid light phase and a second liquid outlet for discharge of a liquid heavy phase having a density that is higher than said liquid light phase. The rotatable assembly, includes a rotor casing enclosing a separation space in which a stack of separation discs is arranged to rotate around a vertical axis of rotation. The separation space is arranged for receiving liquid mixture from said feed inlet.Type: ApplicationFiled: March 17, 2021Publication date: April 27, 2023Applicant: Alfa Laval Corporate ABInventor: Per-Gustaf LARSSON
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Publication number: 20230120257Abstract: A centrifugal separator and a method of operating the separator are disclosed. The separator includes a centrifuge rotor having a rotor wall enclosing an inner space containing a stack of separation disks. The rotor includes an inlet for a product, a first outlet for a light phase of the product, and a second outlet for a heavy phase of the product. The second outlet includes a plurality of outlet channels extending along an inner side of the rotor wall from an outer region towards an inner region of the inner space. Each outlet channel transports a flow of the heavy phase from the outer region. The separator includes a plurality of temperature sensors provided at a respective outlet channel. Each sensor senses a temperature in the proximity of the respective outlet channel and provides a signal representing the sensed temperature.Type: ApplicationFiled: March 31, 2021Publication date: April 20, 2023Applicant: ALFA LAVAL CORPORATE ABInventor: Per-Gustaf LARSSON
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Publication number: 20230099252Abstract: A method for determining if air is trapped within a centrifugal separator, the separator including a stationary frame, a rotatable assembly, a drive unit for rotating the rotatable assembly relative the frame around an axis of rotation, a feed inlet for supply of a liquid mixture to be separated, a first liquid outlet for discharge of a separated liquid phase and a second liquid outlet for discharge of a heavy phase having a density that is higher than said liquid phase. The rotatable assembly includes a rotor casing enclosing a separation space in which a stack of separation discs is arranged to rotate around a vertical axis of rotation.Type: ApplicationFiled: February 18, 2021Publication date: March 30, 2023Applicant: Alfa Laval Corporate ABInventor: Per-Gustaf LARSSON
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Publication number: 20230070550Abstract: A centrifugal separator for separation of a liquid mixture includes a stationary frame, a rotatable assembly and a drive unit for rotating the rotatable assembly relative the frame around an axis of rotation, wherein the rotatable assembly includes a rotor casing enclosing a separation space in which a stack of separation discs is arranged to rotate around a vertical axis of rotation. The rotor casing includes a mechanically hermetically sealed inlet for supply of the liquid mixture to the separation space; a first liquid outlet that is mechanically hermetically sealed and arranged for discharge of a separated liquid phase and a second liquid outlet that is mechanically hermetically sealed and arranged for discharge of a separated heavy phase, the heavy phase having a density that is higher than said liquid phase.Type: ApplicationFiled: February 11, 2021Publication date: March 9, 2023Applicant: Alfa Laval Corporate ABInventors: Douglas OSMAN, Per-Gustaf LARSSON, Peter THORWID, Staffan KÖNIGSSON
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Publication number: 20220250091Abstract: A centrifugal separator includes a rotor, and a control system. The control system includes a first and a second pressure sensor arranged at first and second radial positions in a separation space of the rotor. The first and second pressure sensors are positioned to be submerged in process liquid during operation of the centrifugal separator. A control unit of the control system is configured to determine a parameter of the process liquid within the separation space during operation of the centrifugal separator based on measurements from the first and second pressure sensors.Type: ApplicationFiled: July 3, 2020Publication date: August 11, 2022Applicant: Alfa Laval Corporate ABInventor: Per-Gustaf LARSSON
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Patent number: 11104863Abstract: The present invention provides method for separating contaminants from a liquid mixture comprising the steps of a) providing a feed of said liquid mixture to be purified, b) adding a separation aid to the liquid mixture to be purified, wherein said separation aid is capable of binding said contaminants and c) supplying a flow of compressed air into said feed after step b) has been performed to provide a feed comprising air. The method further comprises steps d) removing air from said feed comprising air to provide a deaerated feed; and e) supplying said deaerated feed to a separator, and f) separating a phase comprising contaminants and said separation aid from said liquid mixture in said separator, wherein the separation aid added in step b) is insoluble in said liquid mixture at the separation conditions in step f). The present invention further provides a system for separating contaminants from a liquid mixture.Type: GrantFiled: December 1, 2017Date of Patent: August 31, 2021Assignee: ALFA LAVAL CORPORATE ABInventors: Per-Gustaf Larsson, Ami Karlsson
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Patent number: 11066623Abstract: The present invention provides method for separating contaminants from a liquid mixture comprising the steps of a) providing a feed of said liquid mixture to be purified, b) adding a separation aid to the liquid mixture to be purified, wherein said separation aid is capable of binding said contaminants and c) supplying a flow of compressed air into said feed after step b) has been performed to provide a feed comprising air. The method further comprises steps d) removing air from said feed comprising air to provide a deaerated feed; and e) supplying said deaerated feed to a separator, and f) separating a phase comprising contaminants and said separation aid from said liquid mixture in said separator, wherein the separation aid added in step b) is insoluble in said liquid mixture at the separation conditions in step f). The present invention further provides a system for separating contaminants from a liquid mixture.Type: GrantFiled: December 1, 2017Date of Patent: July 20, 2021Assignee: ALFA LAVAL CORPORATE ABInventors: Per-Gustaf Larsson, Ami Karlsson
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Publication number: 20210146379Abstract: A centrifugal separator includes a rotor arrangement and a drive arrangement. The centrifugal separator includes a generator for generating an electric current. The generator is configured for continuously generating a current during a full revolution of the rotor arrangement. The current is utilised for supplying electric current to a user of electric energy arranged in the rotor arrangement.Type: ApplicationFiled: June 11, 2018Publication date: May 20, 2021Applicant: ALFA LAVAL CORPORATE ABInventor: Per-Gustaf LARSSON
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Publication number: 20200406272Abstract: A centrifugal separator includes a rotor arrangement and a drive arrangement. A user of electric energy is arranged in the rotor arrangement. The centrifugal separator includes a rotary transformer, the rotary transformer including a transformer stator and a transformer rotor. The transformer stator and the transformer rotor are arranged adjacent to each other with an airgap therebetween. The transformer rotor includes a secondary coil and is rotatable together with the rotor arrangement. The secondary coil is electrically connected to the user of electric energy arranged in the rotor arrangement for providing the user of electric energy with an electric current. The user of electric energy may be an actuator, and/or a sensor, and/or a control unit.Type: ApplicationFiled: February 19, 2019Publication date: December 31, 2020Applicant: ALFA LAVAL CORPORATE ABInventor: Per-Gustaf LARSSON
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Publication number: 20200078750Abstract: The present invention provides method for separating contaminants from a liquid mixture comprising the steps of a) providing a feed of said liquid mixture to be purified, b) adding a separation aid to the liquid mixture to be purified, wherein said separation aid is capable of binding said contaminants and c) supplying a flow of compressed air into said feed after step b) has been performed to provide a feed comprising air. The method further comprises steps d) removing air from said feed comprising air to provide a deaerated feed; and e) supplying said deaerated feed to a separator, and f) separating a phase comprising contaminants and said separation aid from said liquid mixture in said separator, wherein the separation aid added in step b) is insoluble in said liquid mixture at the separation conditions in step f). The present invention further provides a system for separating contaminants from a liquid mixture.Type: ApplicationFiled: December 1, 2017Publication date: March 12, 2020Applicant: ALFA LAVAL CORPORATE ABInventors: Per-Gustaf LARSSON, Ami KARLSSON
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Patent number: 4223605Abstract: A fuse for transfer of a detonation from an explosive charge to another or for initiating or igniting a detonation in an explosive charge. The fuse has the shape of a hose forming a channel having a thin layer of a reactive substance on its inner surface.In order to prevent any throttling of the channel a pyrotechnic charge is inserted into each end of the hose.Type: GrantFiled: September 13, 1978Date of Patent: September 23, 1980Inventor: Gustaf A. Larsson