Patents by Inventor Per Hansson
Per Hansson 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: 20110201988Abstract: A blood treatment apparatus includes: a blood treatment unit, a pair of fluid pumps and a pair of blood pumps. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Flow measurement device which determines at least one blood flow parameter reflecting an average flow in relation to the blood treatment unit during a well-defined period of operation of the apparatus, for example while completing one operation cycle.Type: ApplicationFiled: October 12, 2009Publication date: August 18, 2011Inventors: Mattias Holmer, Lennart Jönsson, Anders Wallenborg, Per Hansson
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Publication number: 20110201989Abstract: A blood treatment apparatus, including a blood treatment unit configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid, a pair of fluid pumps configured to pass blood treatment fluid through the blood treatment unit, a pair of blood pumps configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel, each blood pump including a pump chamber and a flexible member separating the pumping chamber into a first blood accumulating container and a second working fluid accumulating container where the flexible member is configured to vary a volume relationship between the first and the second accumulation containers.Type: ApplicationFiled: October 12, 2009Publication date: August 18, 2011Applicant: Gambro Lundia ABInventors: Mattias Holmer, Lennart Jönsson, Anders Wallenborg, Per Hansson
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Patent number: 7922898Abstract: A circuit for extracorporeal blood treatment in which a flow-inverting device is interposed between a blood treatment unit and a blood pump placed on an artery branch connected with a vascular access of a patient. The flow-inverting device allows the blood flow within the filtering unit to be kept unchanged even following an inverted circulation in the patient-side artery and vein branches controlled by the blood pump.Type: GrantFiled: May 5, 2008Date of Patent: April 12, 2011Assignee: Gambro Lundia ABInventors: Lennart Jonsson, Mattias Holmer, Per Hansson
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Publication number: 20110024353Abstract: A proposed blood treatment apparatus includes: a blood treatment unit, a pair of fluid pumps and a pair blood pumps. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Additionally, the fluid pumps are configured to control the operation of the blood pumps via the blood treatment fluid. Moreover, a flow control device is configured to control a trans-membrane flow between the blood side and the a fluid side of the blood treatment unit. Hence, for instance ultrafiltration can be adjusted to a desired level in a very straightforward manner.Type: ApplicationFiled: April 14, 2009Publication date: February 3, 2011Inventors: Lennart Jönsson, Olof Jansson, Mattias Holmer, Jan Sternby, Anders Nilsson, Per Hansson
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Patent number: 7641422Abstract: A cutting tool for parting and grooving operations of the kind including a coupling part, which is intended for mounting the cutting tool in a machine tool, and a tool head detachably connected to the coupling part. The tool head includes a basic holder part and, joined to the basic holder part, a blade part, in front portion of which an insert pocket is formed, in which a cutting insert is fastenable. The cutting tool also includes means for supplying cooling agent to the cutting insert. The cooling agent supplying means includes a tube member, which is mounted in a recess, which is transverse to the longitudinal direction of the blade part and arranged in the tool head. The tube member has an inlet for connection to a cooling agent source and an outlet for leading the cooling agent in a direction towards the cutting insert.Type: GrantFiled: February 22, 2005Date of Patent: January 5, 2010Assignee: Sandvik Intellectual Property ABInventors: Erik Berminge, Per Hansson
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Publication number: 20080208102Abstract: It is disclosed a circuit for extracorporeal blood treatment in which a flow-inverting device is interposed between a blood treatment unit and a blood pump placed on an artery branch connected with a vascular access of a patient. The flow-inverting device allows the blood flow within the filtering unit to be kept unchanged even following an inverted circulation in the patient-side artery and vein branches controlled by the blood pump.Type: ApplicationFiled: May 5, 2008Publication date: August 28, 2008Inventors: Lennart Jonsson, Mattias Holmer, Per Hansson
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Patent number: 7384543Abstract: A circuit is disclosed for extracorporeal blood treatment in which a flow-inverting device is interposed between a blood treatment unit and a blood pump placed on an artery branch connected with a vascular access of a patient. The flow-inverting device allows the blood flow within the filtering unit to be kept unchanged even following an inverted circulation in the patient-side artery and vein branches controlled by the blood pump.Type: GrantFiled: October 29, 2004Date of Patent: June 10, 2008Assignee: Gambro Lundia ABInventors: Lennart Jonsson, Mattias Holmer, Per Hansson
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Publication number: 20080038072Abstract: In a first aspect, the invention is related to a cutting tool for parting and grooving operations of the kind comprising a coupling part (1), which is intended for mounting the cutting tool in a machine tool, and a tool head (2) detachably connected to the coupling part. The tool head comprises a basic holder part (8) and, joined to the basic holder part, a blade part (9), in the front portion of which an insert pocket is formed, in which a cutting insert (11) is fastenable. The cutting tool also comprises means for supplying cooling agent to the cutting insert. Characterizing for the invention is that said cooling agent supplying means include a tube member (24), which is mounted in a recess, which is transverse to the longitudinal direction of the blade part (9) and arranged in the tool head (2), the tube member having an inlet for connection to a cooling agent source and an outlet for leading the cooling agent in a direction towards the cutting insert (11).Type: ApplicationFiled: February 22, 2005Publication date: February 14, 2008Inventors: Erik Berminge, Per Hansson
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Patent number: 7264424Abstract: A tool head, which is adapted to receive a cutting insert for chip removal machining, includes a basic holder which has a lower support part and an upper clamping portion defining therebetween and insert-receiving pocket. A slot extends through the basic holder at a location spaced from the pocket, wherein the clamping portion is joined to a remaining portion of the basic holder by a hinge portion about which the clamping portion is elastically displaceable toward the cutting insert. A recess extends through the basic holder parallel to the slot and in communication therewith for receiving a nut roll. A clamping screw extends through a bore of the basic holder and into engagement with the nut roll, wherein the clamping screw is operable to displace the nut roll into the slot to expand the slot and thereby elastically displace the clamping portion about the hinge and toward the cutting insert.Type: GrantFiled: November 19, 2004Date of Patent: September 4, 2007Assignee: Sandvik Intellectual Property ABInventors: Per Hansson, Erik Berminge
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Patent number: 7246974Abstract: A tool head, which is adapted to receive a cutting insert for chip removal machining, includes a basic holder which has a lower support part and an upper clamping portion defining therebetween an insert-receiving pocket. A slot extends through the basic holder at a location spaced from the pocket, wherein the clamping portion is joined to a remaining portion of the basic holder by a hinge portion about which the clamping portion is elastically displaceable toward the cutting insert. A recess extends through the basic holder parallel to the slot and in communication therewith, the recess receiving a nut roll. A clamping screw extends through the slot and into threaded engagement with the nut roll, wherein the clamping screw includes a conical head arranged to enter the slot for expanding the slot and elastically displacing the clamping portion about the hinge and toward the cutting insert.Type: GrantFiled: June 16, 2003Date of Patent: July 24, 2007Assignee: Sandvik Intellectual Property ABInventors: Per Hansson, Erik Berminge, Helena Olsson
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Patent number: 7101128Abstract: A tool such as a milling or drilling tool includes a shaft having a front recess in which a cutting head is disposed. A drawbar disposed in the shaft includes a plurality of flexible tongues disposed in the recess. The tongues form a recess in which a rear knob of the cutting head is received. A retainer urges the drawbar axially rearwardly to retain the cutting head in the recess. The shaft includes axial projections at its front end which are received in respective rearwardly open recesses of the cutting head to prevent relative rotation between the shaft and the cutting head.Type: GrantFiled: April 8, 2003Date of Patent: September 5, 2006Assignee: Sandvik Intellectual Property ABInventor: Per Hansson
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Patent number: 7013773Abstract: A tool holder simultaneously carries at least two diametrically arranged tool heads, each tool head carrying cutting inserts for chip removing machining. The tool holder includes an adaptor connected to a coupling. The adaptor has at least two diametrically opposite side surfaces which-diverge away from the coupling. The side surfaces have seats in order to replaceably receive respective tool heads. A line which lies in both a first basal plane and in one of the side surfaces forms an angle in the interval 1°–15° with a longitudinal center line of the tool holder.Type: GrantFiled: December 10, 2002Date of Patent: March 21, 2006Assignee: Sandvik ABInventor: Per Hansson
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Patent number: 6974281Abstract: A tool for chip removing machining includes an insert holder and a cutting insert attached thereto. The holder includes a longitudinal center axis and terminates in a support surface at a front end of the holder. The support surface defines a seat to which the insert is removably attached. The support surface forms a 45-degree angle with the center axis. The cutting insert includes a contact surface for mounting the insert to the seat, and a plurality of fingers projecting generally radially with respect to the center axis. Each finger includes a cutting edge and an associated chip surface.Type: GrantFiled: August 28, 2002Date of Patent: December 13, 2005Assignee: Sandvik ABInventors: Per Hansson, Jörgen Wiman, Sture Sjöö
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Publication number: 20050207853Abstract: A tool head, which is adapted to receive a cutting insert for chip removal machining, includes a basic holder which has a lower support part and an upper clamping portion defining therebetween an insert-receiving pocket. A slot extends through the basic holder at a location spaced from the pocket, wherein the clamping portion is joined to a remaining portion of the basic holder by a hinge portion about which the clamping portion is elastically displaceable toward the cutting insert. A recess extends through the basic holder parallel to the slot and in communication therewith, the recess receiving a nut roll. A clamping screw extends through the slot and into threaded engagement with the nut roll, wherein the clamping screw includes a conical head arranged to enter the slot for expanding the slot and elastically displacing the clamping portion about the hinge and toward the cutting insert.Type: ApplicationFiled: June 16, 2003Publication date: September 22, 2005Inventors: Per Hansson, Erik Berminge, Helena Olsson
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Publication number: 20050180824Abstract: A tool head, which is adapted to receive a cutting insert for chip removal machining, includes a basic holder which has a lower support part and an upper clamping portion defining therebetween and insert-receiving pocket. A slot extends through the basic holder at a location spaced from the pocket, wherein the clamping portion is joined to a remaining portion of the basic holder by a hinge portion about which the clamping portion is elastically displaceable toward the cutting insert. A recess extends through the basic holder parallel to the slot and in communication therewith for receiving a nut roll. A clamping screw extends through a bore of the basic holder and into engagement with the nut roll, wherein the clamping screw is operable to displace the nut roll into the slot to expand the slot and thereby elastically displace the clamping portion about the hinge and toward the cutting insert.Type: ApplicationFiled: November 19, 2004Publication date: August 18, 2005Applicant: SANDVIK ABInventors: Per Hansson, Erik Berminge
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Publication number: 20050145549Abstract: It is disclosed a circuit for extracorporeal blood treatment in which a flow-inverting device is interposed between a blood treatment unit and a blood pump placed on an artery branch connected with a vascular access of a patient. The flow-inverting device allows the blood flow within the filtering unit to be kept unchanged even following an inverted circulation in the patient-side artery and vein branches controlled by the blood pump.Type: ApplicationFiled: October 29, 2004Publication date: July 7, 2005Inventors: Lennart Jonsson, Mattias Holmer, Per Hansson
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Publication number: 20050117987Abstract: A tool such as a milling or drilling tool includes a shaft having a front recess in which a cutting head is disposed. A drawbar disposed in the shaft includes a plurality of flexible tongues disposed in the recess. The tongues form a recess in which a rear knob of the cutting head is received. A retainer urges the drawbar axially rearwardly to retain the cutting head in the recess. The shaft includes axial projections at its front end which are received in respective rearwardly open recesses of the cutting head to prevent relative rotation between the shaft and the cutting head.Type: ApplicationFiled: April 8, 2003Publication date: June 2, 2005Inventor: Per Hansson
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Patent number: 6814526Abstract: A holder is designed to receive a cutting insert intended for parting and grooving operations. The insert is clampable in a seat formed between a blade tongue and a clamping finger which respectively extend from lower and upper front parts of the holder. A gap separates those front parts in order to enable those parts to be forced towards each other by means of a clamping mechanism mounted in the holder. The clamping mechanism comprises a drawbar, a first end portion of which is movable within a bore formed in one of the front parts, and a second end portion of which is fixed in the other front part. The first end portion of the drawbar includes a head having a frusto-conical abutment surface. A tightening screw is threadedly mounted in the same front part as the head and is arranged to contact the abutment surface to displace the drawbar in a direction forcing the clamping finger and the tongue together to clamp the cutting insert in place.Type: GrantFiled: April 19, 2002Date of Patent: November 9, 2004Assignee: Sandvik AktiebolagInventors: Akio Shiraiwa, Per Hansson
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Patent number: 6769843Abstract: A tool holder for holding a cutting insert includes a head on which an insert-support surface is disposed. A plate is mounted on the head by a serrated connection, the head including fingers that form side surfaces disposed on opposing sides of the support surface. Each of the side surfaces includes a recess, wherein each side surface defines spaced apart contact areas. A slot extends through one of the fingers in spaced relationship to the side surface formed by that finger to render that side surface flexible. A passage interconnects an intermediate portion of that flexible side surface and an intermediate portion of the slot.Type: GrantFiled: January 30, 2002Date of Patent: August 3, 2004Assignee: Sandvik ABInventor: Per Hansson
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Patent number: 6715968Abstract: A double ended metal-cutting insert includes a pair of circular cutting edges disposed at respective end surfaces of the insert. Each end surface includes an upper portion connected to the cutting edge, and a lower portion connected to the upper portion by a concave transition portion. The lower portion is recessed relative to the upper portion in a direction toward the opposite cutting edge. The lower portion is a flat face oriented perpendicular to the bottom surface.Type: GrantFiled: May 14, 2001Date of Patent: April 6, 2004Assignee: Sandvik AktiebolagInventors: Pär Tägtström, Per Hansson, Claes Andersson