Patents by Inventor Fredrik Karlsson
Fredrik Karlsson 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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Publication number: 20240088417Abstract: A cooling system for cooling of a fuel cell assembly, includes a cooling loop for recirculation of a cooling medium, a cooling medium flow line comprising a first cooling medium buffer tank, a first heat exchanger for cooling of the cooling medium, and a second cooling medium buffer tank. The first cooling medium buffer tank is arranged upstream the first heat exchanger so as to allow collection, storing and discharge of cooling medium before it reaches the first heat exchanger. The second cooling medium buffer tank is arranged downstream of the first heat exchanger so as to allow collection, storing and discharge of cooling medium that has passed through and been cooled in the first heat exchanger.Type: ApplicationFiled: January 5, 2021Publication date: March 14, 2024Applicant: VOLVO TRUCK CORPORATIONInventors: Pranav ARYA, Fredrik BLOMGREN, Stina KARLSSON
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Publication number: 20220314422Abstract: A hand-held electrically powered cut-off tool (100, 200, 800, 1000, 1900) comprising a first part (110) and a second part (120) arranged vibrationally isolated from each other, the first part (110) comprising an arm (116) arranged to support a cutting disc (130) and an electric motor (140) arranged to drive the cutting disc, the second part (120) comprising front (190) and rear (195) handles for operating the cut-off tool, and a battery compartment (150) for holding an electrical storage device (220, 1800) such as a battery arranged to power the electric motor (140), wherein one or more damping members (170, 1910) are arranged in-between the first part (110) and the second part (120), where at least one damping member (170, 1910) is formed in a resilient material associated with a damping coefficient.Type: ApplicationFiled: November 25, 2020Publication date: October 6, 2022Inventors: Fredrik Karlsson, Torbjörn Almqvist, Niklas Sundberg, Paul Johansson
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Publication number: 20220241918Abstract: The present disclosure relates to a dust container arrangement (15, 120, 210) adapted to be fluidly coupled to a fan arrangement (13) comprised in a power tool (1) via an at least partly flexible dust conduit (14). The dust container arrangement (15, 120, 210) comprises a frame (100, 126) which in turn comprises a holder part (102, 123) with a container inlet (101, 125). The dust container arrangement (15, 120, 210) further comprises a first container (107, 121) and a second container (108), which containers (107, 108; 121) are releasably attached to the holder part (102, 123) in a sealed manner. The first container (107, 121) is air-permeable such that air (A1) that is blown into the container inlet (101, 125) is permitted to escape through a wall (115 132) of the first container (107, 121), while the second container (108) is air-tight during operation and adapted to receive dust (113A, 113B, 113C) that is brought into the container inlet (101, 125).Type: ApplicationFiled: May 14, 2020Publication date: August 4, 2022Inventors: Fredrik Karlsson, Anders Reuterberg, Johan Sandwall, Tobias Gustafsson
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Patent number: 11400531Abstract: The present disclosure relates to engine-driven tool (1) comprising a rotatable work tool (2) and an engine (4) for propelling a first driving pulley (28) via a clutch wheel (30) comprised in a power transferring unit (27) and having an outer edge. The first driving pulley (28) and the clutch wheel (30) arc arranged to rotate around a common driving axis (38). The power transferring unit (27) comprises an endless drive belt (9) that is arranged propel the rotatable work tool (2) when the first driving pulley (28) is propelled. A fan arrangement (13) is arranged to convey air front a dust channel (11) formed between a shielding cover (8) and the rotatable work tool (2), and comprises a fan turbine (26) that is connected to a fan pulley (29) connected to the drive belt (9) is arranged to propel the fan pulley (29).Type: GrantFiled: November 23, 2020Date of Patent: August 2, 2022Assignee: HUSQVARNA ABInventor: Fredrik Karlsson
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Publication number: 20220219308Abstract: A hand-held electrically powered cut-off tool (100, 200, 800, 1000, 1900, 2300) comprising a fan (145) arranged to be driven by an electric motor (140) to generate a flow of cooling air (160) and a battery compartment (150) comprising an electrical storage device (220, 1800), such as a battery, arranged to power the electric motor (140), wherein a cooling air conduit is arranged to guide the flow of cooling air (160) towards an outlet aperture (1750) formed in a wall of the battery compartment (150), where the outlet aperture (1750) faces a corresponding inlet aperture (1870) formed in an enclosure of the electrical storage device (220, 1800) for receiving cooling air and thereby generating an air pressure above atmospheric pressure in the electrical storage device (220, 1800), wherein a first slot section (Ss1) is formed by a distance between the outlet aperture (1750) and the inlet aperture (1870) such that a first portion (2415) of the flow of cooling air (160) air leaks out to an exterior of the cut-off tType: ApplicationFiled: November 25, 2020Publication date: July 14, 2022Inventors: Torbjörn Almqvist, Paul Johansson, Fredrik Karlsson
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Publication number: 20220143870Abstract: A handheld cut-off saw (300) for cutting concrete and stone, the handheld cut-off saw comprising a drive arrangement (100, 200, 600, 800) for driving a circular cutting tool (110), the drive arrangement comprising: a belt drive portion (120) comprising a first pulley (121) and a second pulley (122), wherein the first pulley is arranged to be powered by a power source (130) and to drive the second pulley via a belt (123), wherein the second pulley (122) has a larger pitch diameter than the first pulley (121); and a gear transmission portion (140) comprising a first gearwheel (141) and a second gearwheel (142), wherein the first gearwheel (141) is co-axially connected to the second pulley (122) and radially connected to the second gearwheel (142), and wherein the second gearwheel (142) is arranged to be co-axially connected to the circular cutting tool (110).Type: ApplicationFiled: February 20, 2020Publication date: May 12, 2022Inventors: Håkan Pinzani, Niklas Sundberg, Fredrik Karlsson
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Patent number: 11059114Abstract: The present disclosure relates to engine-driven tool (1) comprising a rotatable work tool (2) and an engine (4) for propelling a first driving pulley (28) via a clutch wheel (30) comprised in a power transferring unit (27) and having an outer edge. The first driving pulley (28) and the clutch wheel (30) arc arranged to rotate around a common driving axis (38). The power transferring unit (27) comprises an endless drive belt (9) that is arranged propel the rotatable work tool (2) when the first driving pulley (28) is propelled. A fan arrangement (13) is arranged to convey air front a dust channel (11) formed between a shielding cover (8) and the rotatable work tool (2), and comprises a fan turbine (26) that is connected to a fan pulley (29) connected to the drive belt (9) is arranged to propel the fan pulley (29).Type: GrantFiled: November 1, 2017Date of Patent: July 13, 2021Assignee: HUSQVARNA ABInventor: Fredrik Karlsson
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Patent number: 10950340Abstract: A process for collecting and storing data related to a condition of an absorbent product is disclosed. The process includes the steps of: receiving, in a server unit, measurement data related to said condition; storing said measurement data in a first database; adapting said measurement data to a format in which it can be utilized by at least one application program configured for analyzing said condition; storing the adapted measurement data in a second database; and providing access to said second database from at least one application program arranged for analyzing said measurement data. Also disclosed is an arrangement for collecting and storing incontinence-related data.Type: GrantFiled: April 30, 2013Date of Patent: March 16, 2021Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAGInventors: Christer Olofsson Ranta, Anders Gustafsson, Fredrik Karlsson, Mattias Bosaeus, Kyrre Aalerud
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Publication number: 20210069807Abstract: The present disclosure relates to engine-driven tool (1) comprising a rotatable work tool (2) and an engine (4) for propelling a first driving pulley (28) via a clutch wheel (30) comprised in a power transferring unit (27) and having an outer edge. The first driving pulley (28) and the clutch wheel (30) arc arranged to rotate around a common driving axis (38). The power transferring unit (27) comprises an endless drive belt (9) that is arranged propel the rotatable work tool (2) when the first driving pulley (28) is propelled. A fan arrangement (13) is arranged to convey air front a dust channel (11) formed between a shielding cover (8) and the rotatable work tool (2), and comprises a fan turbine (26) that is connected to a fan pulley (29) connected to the drive belt (9) is arranged to propel the fan pulley (29).Type: ApplicationFiled: November 23, 2020Publication date: March 11, 2021Inventor: Fredrik Karlsson
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Publication number: 20200261991Abstract: The present disclosure relates to an engine-driven tool (1) comprising a rotatable work tool (2), an engine (4) that is arranged to propel the rotatable work tool (2), a shielding cover (8) for shielding the rotatable work tool (2), and a dust channel (11) that is formed between the shielding cover (8) and the rotatable work tool (2). A dust hose (14) is arranged to connect the dust channel (11) to a dust container (17) and an electrically driven fan (16) that is arranged to convey air from the dust channel (11) into the dust container (17) via the dust hose (14). The engine-driven tool (1) comprises an electrical generator (18) that is electrically connectable to the fan motor (26) and is arranged to be at least indirectly driven by the engine (4). The electrical generator (18) is furthermore arranged to generate an electrical current when driven, where said electrical current at least indirectly is arranged to propel the fan motor (26).Type: ApplicationFiled: October 25, 2017Publication date: August 20, 2020Inventor: Fredrik Karlsson
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Publication number: 20190275596Abstract: The present disclosure relates to engine-driven tool (1) comprising a rotatable work tool (2) and an engine (4) for propelling a first driving pulley (28) via a clutch wheel (30) comprised in a power transferring unit (27) and having an outer edge. The first driving pulley (28) and the clutch wheel (30) arc arranged to rotate around a common driving axis (38). The power transferring unit (27) comprises an endless drive belt (9) that is arranged propel the rotatable work tool (2) when the first driving pulley (28) is propelled. A fan arrangement (13) is arranged to convey air front a dust channel (11) formed between a shielding cover (8) and the rotatable work tool (2), and comprises a fan turbine (26) that is connected to a fan pulley (29) connected to the drive belt (9) is arranged to propel the fan pulley (29).Type: ApplicationFiled: November 1, 2017Publication date: September 12, 2019Inventor: Fredrik Karlsson
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Publication number: 20180369297Abstract: The invention is directed to a method of treating or reducing the risk of intrahepatic cholestasis in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of a composition comprising at least one bacterial species or strain comprising bile acid deconjugation/hydrolysis activity and/or 7-epimerization activity, thereby treating or reducing the risk of intrahepatic cholestasis in a subject in need thereof. Compositions for use in such methods are also provided.Type: ApplicationFiled: December 14, 2016Publication date: December 27, 2018Inventors: Fredrik Karlsson, Bo Mollstam
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Publication number: 20170339528Abstract: A position determining system and method for calculating a position of a mobile communication device within an environment is presented. The position determining system comprises a memory comprising a logical model of the environment; a status signal receiver configured to receive a status signal pertaining to a status of the environment; and logical circuitry configured to: dynamically update the logical mode of the environment based on the status signal; estimate one or more sets of geographic coordinates of the mobile communication device; map match the estimated one or more sets of geographic coordinates of the mobile communication device to the dynamically updated logical mod& of the environment; and calculate the position of the mobile communication device within the environment based on the map match.Type: ApplicationFiled: May 12, 2017Publication date: November 23, 2017Inventors: Oskar GRÖNQVIST, Fredrik KARLSSON
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Patent number: 9736809Abstract: The invention is directed to determining a position of a mobile device. An exemplary method comprises scanning a wireless signal associated with the mobile device; measuring a signal strength associated with the wireless signal; determining a timestamp associated with the measurement; and determining a position of the mobile device based on the signal strength measurement and the timestamp. The present invention is useful for both positioning a user of the mobile device and for locating an access point.Type: GrantFiled: February 5, 2014Date of Patent: August 15, 2017Assignees: Sony Corporation, Sony Mobile Communications Inc.Inventors: Magnus Persson, Martin Karlsson, Fredrik Karlsson
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Patent number: 9604297Abstract: The present invention relates to liquid dispensing system for a rotatable work tool (2), comprising a control valve (13), an inlet and outlet liquid guiding device (11, 15). The control valve (13) comprises a housing (18) with a rotatable drum part (19) arranged to rotate. The housing (18) comprises inlet and outlet tubes (21, 22) arranged to be connected to the liquid guiding devices (11, 15). The tubes (21, 11) have corresponding inlet and outlet openings (23) facing the drum part (19). The drum part (19) comprises a first seal (25) and a third seal (27), the seals (25, 27) running around the drum part (19). The third seal (27) has an extension (34) running partially along the first seal (25), such that a first and second volume (28, 29) are formed. Each opening (23, 24) is connected to one of the volumes, or both. At least one volume (29) enables fluid connection between the openings (23, 24) that is variable by means of the third seal (27) moving over one or more of the openings (23).Type: GrantFiled: February 5, 2013Date of Patent: March 28, 2017Assignee: HUSQVARNA ABInventors: Fredrik Karlsson, Hans Petersson
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Publication number: 20160278039Abstract: The invention is directed to determining a position of a mobile device. An exemplary method comprises scanning a wireless signal associated with the mobile device; measuring a signal strength associated with the wireless signal; determining a timestamp associated with the measurement; and determining a position of the mobile device based on the signal strength measurement and the timestamp. The present invention is useful for both positioning a user of the mobile device and for locating an access point.Type: ApplicationFiled: February 5, 2014Publication date: September 22, 2016Inventors: Magnus Persson, Martin Karlsson, Fredrik Karlsson
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Patent number: 9337389Abstract: Group-III nitride structure comprising at least one structure pyramid having a base having at least four sides. The structure pyramid comprises an inner pyramid having a base having at least four sides, which inner pyramid is made of a first group-III nitride. The inner pyramid is coated with an inner first layer made of a second group-III nitride and an outer second layer made of a third group-III nitride, wherein the second group-III nitride has a lower band gap than the first group-III nitride and a lower band gap than the third group-III nitride. The base of the structure pyramid is elongated resulting in an upper ridge creating at least one anisotropic quantum dot.Type: GrantFiled: June 26, 2013Date of Patent: May 10, 2016Assignee: POLAR LIGHT TECHNOLOGIES ABInventors: Anders Lundskog, Chih-Wei Hsu, Fredrik Karlsson
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Publication number: 20160078176Abstract: A process for collecting and storing data related to a condition of an absorbent product is disclosed. The process includes the steps of: receiving, in a server unit, measurement data related to said condition; storing said measurement data in a first database; adapting said measurement data to a format in which it can be utilized by at least one application program configured for analyzing said condition; storing the adapted measurement data in a second database; and providing access to said second database from at least one application program arranged for analyzing said measurement data. Also disclosed is an arrangement for collecting and storing incontinence-related data.Type: ApplicationFiled: April 30, 2013Publication date: March 17, 2016Inventors: Christer Olofsson RANTA, Anders GUSTAFSSON, Fredrik KARLSSON, Mattias BOSAEUS, Kyrre AALERUD
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Publication number: 20160032426Abstract: A nickel alloy includes a proportion by weight of Cr of 12.3% to 13.7%, a proportion by weight of Al of 4.3% to 4.7% and a proportion by weight of Co of 4% to 6%. The components are preferably Cr, Mo, Re and/or W, Al, Ti, Ta, Hf, Si, reactive elements including actinides and lanthanides, C, optionally the components Zr and/or B. The proportions by weight are selected such that both a desired high creep resistance and also a desired high hot corrosion resistance are achieved. A turbine blade is made of the nickel alloy.Type: ApplicationFiled: January 22, 2014Publication date: February 4, 2016Inventors: Magnus Hasselqvist, Fredrik Karlsson
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Publication number: 20150367432Abstract: The present invention relates to liquid dispensing system for a rotatable work tool (2), comprising a control valve (13), an inlet and outlet liquid guiding device (11, 15). The control valve (13) comprises a housing (18) with a rotatable drum part (19) arranged to rotate. The housing (18) comprises inlet and outlet tubes (21, 22) arranged to be connected to the liquid guiding devices (11, 15). The tubes (21, 11) have corresponding inlet and outlet openings (23) facing the drum part (19). The drum part (19) comprises a first seal (25) and a third seal (27), the seals (25, 27) running around the drum part (19). The third seal (27) has an extension (34) running partially along the first seal (25), such that a first and second volume (28, 29) are formed. Each opening (23, 24) is connected to one of the volumes, or both. At least one volume (29) enables fluid connection between the openings (23, 24) that is variable by means of the third seal (27) moving over one or more of the openings (23).Type: ApplicationFiled: February 5, 2013Publication date: December 24, 2015Applicant: HUSQVARNA ABInventors: Fredrik Karlsson, Hans Petersson