Patents by Inventor Lars Persson
Lars Persson 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: 20110180247Abstract: The invention relates to a plate heat exchanger (9), comprising a plurality of heat exchanger plates (1, 13), comprising at least one section showing indentations (2, 3, 14, 15), intended to be placed against corresponding indentations (2, 3, 14, 15) of a heat exchanger plate (1, 13) of a corresponding design. At least a first type of indentations (2, 14) and at least a second type of indentations (3, 15) is provided, wherein said first type of indentations (2, 14) and said second type of indentations (3, 15) are of a different design.Type: ApplicationFiled: November 19, 2010Publication date: July 28, 2011Applicant: EP Technology ABInventor: Lars Persson
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Publication number: 20110088882Abstract: A plate heat exchanger (10) of the double plate type having a plurality of stacked plate elements, each comprising a first plate (1) and a second plate (9). At least the first plate (1) is provided with a surface pattern with a plurality of dimples (5) defining a first distance to a plate plane (8), and a plurality of canal parts (6) defining a second, smaller, distance to the plate plane (8). The first plate (1) and the second plate (9) are joined in such a manner that the protruding areas (5, 6) in combination form flow paths (11) being fluidly connected to rim portions (3) of the plates (1, 9). The heat exchanger (10) provides efficient leakage detection via the flow paths (11) while ensuring a good thermal contact between heat exchanging fluids through the plates (1, 9) via flat portions (7) between the protruding parts (5, 6).Type: ApplicationFiled: March 12, 2009Publication date: April 21, 2011Applicants: Danfoss A/S, EP Technology ABInventor: Lars Persson
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Patent number: 7808310Abstract: One embodiment of the invention relates to a dynamically adjustable differential band-pass filter. This band-pass filter includes a first leg that has an input portion and an output portion with a first inductor therebetween. It also includes a second leg in parallel with the first leg, where the second leg has an input portion and an output portion with a second inductor therebetween. The first inductor is symmetrically inter-woven with the second inductor. In some embodiments, the band pass filter is configured to compensate for losses due to the inductors. Other band-pass filters and methods are also disclosed.Type: GrantFiled: November 28, 2007Date of Patent: October 5, 2010Assignee: Infineon Technologies, AGInventors: Ivan Uzunov, Jani Järvenhaara, Svetozar Broussev, Joni Järvi, Lars Persson
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Patent number: 7740060Abstract: Slacking off device (24) for use on a drilling device (2) for rock drilling. The drilling device (2) comprises a rock drill (4) to which a drill string (10) is adapted to be jointed by means of a thread joint. The drill string (10) comprises an arbitrary number of drill rods (12, 14, 16) which are adapted to be jointed together by means of thread joints. The drilling device (2) comprises a driving device for forward and back rotation of the drill string (10). The slacking off device (24) comprises a clamping device (25) arranged to clamp up the drill string (10) and a separate striking device (33) arranged to strike with an angle towards the longitudinal direction of the drill string (10) of principally 75°-105° on a first (32) of any of said thread joints under back rotation so that an impressed torque on the drill string (10) is obtained in a thread slacking rotation direction to provide slacking of the first thread joint (32).Type: GrantFiled: November 7, 2006Date of Patent: June 22, 2010Assignee: Atlas Copco Rock Drills ABInventor: Lars Persson
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Patent number: 7708889Abstract: A method used in connection with processing of blood components, wherein blood products are then filtered via a filter rotating along with a centrifuge rotor and the sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products.Type: GrantFiled: January 26, 2009Date of Patent: May 4, 2010Assignee: CaridianBCT, Inc.Inventors: Niclas Högberg, Emanuel Hällgren, Peter Pihlstedt, Brian M. Holmes, Lars Persson, Lars Strandberg, Geert Van Waeg, Frank Corbin, III
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Publication number: 20090220648Abstract: The present invention relates to a method for producing a co-granulate of mono calcium phosphate and gypsum comprising: providing a mixture of at least burnt lime and gypsum and granulating said mixture with an aqueous solution of phosphoric acid. The invention further relates to a granulate obtainable according to the above method for both compound feed and premixes. Further, according to the invention a mixture of at least CaCO3 and gypsum is granulated with an aqueous solution of phosphoric acid, wherein the temperature of the mixture during granulation is less than 90° C.Type: ApplicationFiled: July 6, 2006Publication date: September 3, 2009Applicant: KEMIRA GROW HOW ABInventors: Bernt Nilsson, Lars Persson
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Publication number: 20090156155Abstract: The invention is related to a receiver and a tuner respectively, particularly to a television receiver or tuner which can be integrated in a single circuit device. The invention is also related to a method for processing RF signal.Type: ApplicationFiled: December 17, 2007Publication date: June 18, 2009Applicant: Infineon Technologies AGInventors: Erwin Krug, Claus Muschallik, Lars Persson
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Publication number: 20090134954Abstract: One embodiment of the invention relates to a dynamically adjustable differential band-pass filter. This band-pass filter includes a first leg that has an input portion and an output portion with a first inductor therebetween. It also includes a second leg in parallel with the first leg, where the second leg has an input portion and an output portion with a second inductor therebetween. The first inductor is symmetrically inter-woven with the second inductor. In some embodiments, the band pass filter is configured to compensate for losses due to the inductors. Other band-pass filters and methods are also disclosed.Type: ApplicationFiled: November 28, 2007Publication date: May 28, 2009Inventors: Ivan Uzunov, Jani Jarvenhaara, Svetozar Broussev, Joni Jarvi, Lars Persson
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Publication number: 20090127206Abstract: A method used in connection with processing of blood components, wherein blood products are then filtered via a filter rotating along with a centrifuge rotor and the sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products.Type: ApplicationFiled: January 26, 2009Publication date: May 21, 2009Applicant: CARIDIANBCT, INC.Inventors: Niclas HOGBERG, Emanuel HALLGREN, Peter PIHLSTEDT, Brian M. HOLMES, Lars PERSSON, Lars STRANDBERG, Geert VAN WAEG, Frank CORBIN, III
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Publication number: 20090107727Abstract: Slacking off device (24) for use on a drilling device (2) for rock drilling. The drilling device (2) comprises a rock drill (4) to which a drill string (10) is adapted to be jointed by means of a thread joint. The drill string (10) comprises an arbitrary number of drill rods (12, 14, 16) which are adapted to be jointed together by means of thread joints. The drilling device (2) comprises a driving device for forward and back rotation of the drill string (10). The slacking off device (24) comprises a clamping device (25) arranged to clamp up the drill string (10) and a separate striking device (33) arranged to strike with an angle towards the longitudinal direction of the drill string (10) of principally 75°-105° on a first (32) of any of said thread joints under back rotation so that an impressed torque on the drill string ((10) is obtained in a thread slacking rotation direction to provide slacking of the first tread joint (32).Type: ApplicationFiled: November 7, 2006Publication date: April 30, 2009Inventor: Lars Persson
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Patent number: 7497944Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.Type: GrantFiled: March 27, 2007Date of Patent: March 3, 2009Assignee: CaridianBCT, Inc.Inventors: Niclas Högberg, Emanuel Hällgren, Peter Pihlstedt, Brian M. Holmes, Lars Persson, Lars Strandberg, Geert Van Waeg, Frank Corbin, III
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Patent number: 7451807Abstract: A heat exchanger and a method for drying a humid medium. In the heat exchanger an internal cross-over passage, allowing a humid medium to double back on itself in a zone delimited by a barrier, is provided. In a first step the heat exchanger cools itself and in a final step the heat exchanger heats itself. Separation areas allow condensation and collection of water within the heat exchanger. The heat exchanger and method enable drying of compressed air within one and the same heat exchanger package.Type: GrantFiled: January 29, 2004Date of Patent: November 18, 2008Assignees: Advanced Flow Technology Inc., EP Technology ABInventor: Lars Persson
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Publication number: 20080257538Abstract: The invention relates to a heat exchanger with a temperature sensor and especially a heat exchanger usable for heating hot water using district heating water. The heat exchanger (1) contains plates (2) placed in a pack and brazed together so that 5 separate channels for first (Fj) and second (VV) media are formed between alternate pairs of plates; two pairs of connections for inlet (3) and outlet (4) for the first medium and inlet (5) and outlet (6) for the second medium, respectively; and a temperature sensor (9) connectable to a valve (7) to control supply of the first medium through the heat exchanger The first medium is intended to supply heat to 10 the second medium. The temperature sensor (9) is placed through a number of plates and in heat conducting contact with them such that the temperature sensor controls the first valve.Type: ApplicationFiled: September 7, 2005Publication date: October 23, 2008Inventor: Lars Persson
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Publication number: 20080053203Abstract: Method and apparatus for separating a volume of composite liquid into at least a first component and a second component including centrifuging a separation bag containing a volume of composite liquid and a volume of gas so as to sediment at least a first component and a second component separation bag; displacing a volume of hydraulic fluid against the separation bag to cause a transfer of at least one fraction of the content of the separation bag into at least one component bag connected to the separation bag; determining the volume of hydraulic fluid displaced and determining the volume of the composite liquid or the transferred components from the determined volume of displaced hydraulic fluid.Type: ApplicationFiled: August 28, 2007Publication date: March 6, 2008Applicant: GAMBRO BCT, INC.Inventors: Niclas HOGBERG, Brian M. HOLMES, Briden Ray STANTON, Lars Persson, Lars Strandberg, Peter Pihlstedt
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Patent number: 7337836Abstract: A heat exchanger with a leakage vent. A fully brazed heat exchanger has an arrangement preventing the two media inside the heat exchanger from mixing in case of leakage. The heat exchanger includes plates having a pattern of grooves and inlet and outlet connections. The plates are placed in a pack and brazed together so as to form separate channels for two media between alternating pairs of plates. A separation zone is created around the connection so as so block off the medium that is not to reach the respective connection. The other medium can flow on by. A leakage vent to the exterior is provided in the separation zone so as to allow detection of any leakage.Type: GrantFiled: February 17, 1998Date of Patent: March 4, 2008Assignee: EP Technology ABInventor: Lars Persson
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Patent number: 7334431Abstract: An evaporator including an evaporating chamber equipped with a drainage. The drainage drains accumulated liquid from the evaporator's lower parts and includes an external expansion driven injector and/or an external pump. The evaporator can be used e.g. in a heat exchanger, e.g. in a heat pump system or air condition system, and the vacuum driven injector can be integrated with an expansion device of the heat exchanger. A condenser can be used together with the evaporator in a heat exchanger of the plate type realizing an integrated superheater/supercooler. This is accomplished by the definition and use of delimited interacting zones through which the cooling medium circulates under heat exchange with itself.Type: GrantFiled: April 15, 2004Date of Patent: February 26, 2008Assignee: EP Technology ABInventor: Lars Persson
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Publication number: 20070261829Abstract: The invention relates to a heat exchanger with an indentation pattern, and specifically a heat exchanger with heat exchanger plates (1) provided with a special pattern instead of the traditional herringbone pattern. The pattern comprises at least one section with bulges (2) and hollows (3), said bulges and hollows having flat tops and bottoms intended to be placed against respective hollows and bulges of a heat exchanger plate of a corresponding design. The surface area of said tops and bottoms is such in relation to the distance between the tops and bottoms that channels (6) for the flow of a medium are formed between the bulges.Type: ApplicationFiled: September 7, 2005Publication date: November 15, 2007Applicant: EP TECHNOLOGY ABInventor: Lars Persson
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Publication number: 20070255505Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.Type: ApplicationFiled: March 27, 2007Publication date: November 1, 2007Inventors: Niclas Hogberg, Emanuel Hallgren, Peter Pihlstedt, Brian Holmes, Lars Persson, Lars Strandberg, Geert Van Waeg, Frank Corbin
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Patent number: 7279107Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.Type: GrantFiled: April 16, 2003Date of Patent: October 9, 2007Assignee: Gambro, Inc.Inventors: Niclas Högberg, Emanuel Hällgren, Peter Pihlstedt, Brian M. Holmes, Lars Persson, Lars Strandberg, Geert Van Waeg, Frank Corbin, III
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Patent number: 7247353Abstract: A method and a device for contactless application of a coating on a three dimensionally distributed surface (14;24;34;44;54;74;84;104). The method comprises application of electrically charged particles (15;25;35;55;65;75;85;105) in such positions on said surface as to form a predetermined pattern, by guiding each of said particles individually to a predetermined position on said surface. The guiding is made by means of an adjustable electric field (12;22;32;42;52;72;82;102) having flux lines with a longitudinal direction extending through said surface, whereby said particles form said coating according to said predetermined pattern on said surface.Type: GrantFiled: July 9, 2003Date of Patent: July 24, 2007Assignee: Nolato ABInventor: Lars Persson