Patents by Inventor Christer Mattsson
Christer Mattsson 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: 7348710Abstract: An electromechanical motor includes a rail to be moved, a dry, non-lubricated, sliding bearing for the rail, and driving members imposing a mechanical driving force on the rail. The bearing has two rail contacting portions. A first portion contacts the rail for obstructing displacements of the rail in a first direction transverse to a main extension of the rail. The first portion also obstructs rotation of the rail around an axis parallel to the main extension. The second portion is arranged for obstructing displacements of the rail in the first direction transverse to the main extension, while allowing at least a minor movement of at least one of rotation of the rail. The motor allows for mechanical flexibility at certain selected positions and ensures immobility at other selected positions, in order to reduce the impact of externally induced displacements, torques and rotations at critical places in the motor.Type: GrantFiled: November 1, 2005Date of Patent: March 25, 2008Assignee: Piezomotor Uppsala ABInventors: Christer Mattsson, Stefan Johansson
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Patent number: 7298564Abstract: A digital camera is constructed with multiple lenses mounted in a pair of tubular elements which are nested together for relative axial movement. Movement is provided by piezoelectric actuators mounted externally to a support tube on flexible printed circuit board elements. Each lens tube is provided with a drive rail which extends at least partially over the length of the lens tube and projects radially outward from the periphery of each of the tubes. The rails are accessible to the engagement pads of the piezoelectric actuators to allow the transmission of drive forces to each of the tubes.Type: GrantFiled: March 13, 2007Date of Patent: November 20, 2007Assignee: Nokia CorporationInventors: Jarkko Rouvinen, Ilpo Kauhaniemi, Pentti Ablgren, Stefan Johansson, Christer Mattsson
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Publication number: 20070153404Abstract: A digital camera is constructed with multiple lenses mounted in a pair of tubular elements which are nested together for relative axial movement. Movement is provided by piezoelectric actuators mounted externally to a support tube on flexible printed circuit board elements. Each lens tube is provided with a drive rail which extends at least partially over the length of the lens tube and projects radially outward from the periphery of each of the tubes. The rails are accessible to the engagement pads of the piezoelectric actuators to allow the transmission of drive forces to each of the tubes.Type: ApplicationFiled: March 13, 2007Publication date: July 5, 2007Applicant: NOKIA CORPORATIONInventors: Jarkko Rouvinen, Ilpo Kauhaniemi, Pentti Ablgren, Stefan Johansson, Christer Mattsson
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Publication number: 20070096599Abstract: An electromechanical motor (1) is disclosed, which comprises a rail (10) to be moved, a dry, non-lubricated, sliding bearing (31, 32) for the rail, and driving members (20) imposing a mechanical driving force on the rail (10). The bearing has two rail contacting portions (31, 32). A first rail contacting portion (31) is in contact with the rail (10) for obstructing displacements of the rail (10) in a first direction transverse to a main extension of the rail (10). The first rail contacting portion (31) also obstructs rotation of the rail (10) around an axis parallel to the main extension. The second rail contacting portion (32) is instead arranged for obstructing displacements of the rail (10) in the first direction transverse to the main extension of the rail (10), while allowing at least a minor movement of at least one of rotation of the rail (10).Type: ApplicationFiled: November 1, 2005Publication date: May 3, 2007Inventors: Christer Mattsson, Stefan Johansson
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Patent number: 7212358Abstract: A digital camera is constructed with multiple lenses mounted in a pair of tubular elements which are nested together for relative axial movement. Movement is provided by piezoelectric actuators mounted externally to a support tube on flexible printed circuit board elements. Each lens tube is provided with a drive rail which extends at least partially over the length of the lens tube and projects radially outward from the periphery of each of the tubes. The rails are accessible to the engagement pads of the piezoelectric actuators to allow the transmission of drive forces to each of the tubes.Type: GrantFiled: December 10, 2002Date of Patent: May 1, 2007Assignee: Nokia CorporationInventors: Christer Mattsson, Stefan Johansson, Anders Jansson
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Patent number: 7055491Abstract: A combustion engine with compression-initiated combustion comprises at least one cylinder in which a piston is movable axially between a lower dead center point and an upper dead center point, with a dead volume between the cylinder and the piston at the upper dead center point. The dead volume comprises at least two substantially separate spaces in the piston and/or the cylinder at the upper dead center point which are designed to ensure that combustion is initiated at different times.Type: GrantFiled: January 29, 2003Date of Patent: June 6, 2006Assignee: Scania CV AB (publ)Inventors: Johan Linderyd, Anders Larsson, Christer Mattsson
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Patent number: 7053527Abstract: In an electromechanical motor, elongated electromechanical drive elements are mechanically and preferably also electrically attached to a carrier. A spring is arranged to apply a force on the electromechanical drive element by pressing the backside of the carrier at a pivot point. The carrier is allowed to pivot around the pivot point around an axis parallel to a the element elongation. The electromechanical drive element is thereby suspended in a floating manner. The electromechanical drive elements are arranged to present a bending motion having strokes perpendicular to the elongation. The pivot point, the mechanical joint between the carrier and the electromechanical drive element, and preferably also a nodal point of bending motions of the electromechanical element are situated at a common plane perpendicular to the element elongation. In one embodiment, the electromechanical drive element is provided with metallizations to which the carrier is soldered.Type: GrantFiled: December 18, 2003Date of Patent: May 30, 2006Assignee: Piezomotor Uppsala ABInventors: Christer Mattsson, Mats Bexell, Stefan Johansson, Olov Johansson, Jonas Eriksson, Sölve Lindmark
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Patent number: 6953030Abstract: A method for fuel injection in a four-stroke combustion engine (1) of piston-and-cylinder type with compression ignition, whereby a specified fuel quantity is supplied to a combustion chamber (2) for each working cycle, and whereby EGR gases are led back to the combustion chamber (2). At least a first portion of said fuel quantity is combined with hot EGR gases for supply to the combustion chamber (2). The invention also relates to a combustion engine working according to the method.Type: GrantFiled: May 15, 2002Date of Patent: October 11, 2005Assignee: Scania CV AB (publ)Inventors: Johan Linderyd, Anders Larsson, Christer Mattsson
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Publication number: 20050178354Abstract: A combustion engine with compression-initiated combustion comprises at least one cylinder in which a piston is movable axially between a lower dead center point and an upper dead center point, with a dead volume between the cylinder and the piston at the upper dead center point. The dead volume comprises at least two substantially separate spaces in the piston and/or the cylinder at the upper dead center point which are designed to ensure that combustion is initiated at different times.Type: ApplicationFiled: January 29, 2003Publication date: August 18, 2005Inventors: Johan Linderyd, Anders Larsson, Christer Mattsson
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Publication number: 20050134146Abstract: In an electromechanical motor, elongated electromechanical drive elements are mechanically and preferably also electrically attached to a carrier. A spring is arranged to apply a force on the electromechanical drive element by pressing the backside of the carrier at a pivot point. The carrier is allowed to pivot around the pivot point around an axis parallel to a the element elongation. The electromechanical drive element is thereby suspended in a floating manner. The electromechanical drive elements are arranged to present a bending motion having strokes perpendicular to the elongation. The pivot point, the mechanical joint between the carrier and the electromechanical drive element, and preferably also a nodal point of bending motions of the electromechanical element are situated at a common plane perpendicular to the element elongation. In one embodiment, the electromechanical drive element is provided with metallizations to which the carrier is soldered.Type: ApplicationFiled: December 18, 2003Publication date: June 23, 2005Inventors: Christer Mattsson, Mats Bexell, Stefan Johansson, Olov Johansson, Jonas Eriksson, Solve Lindmark
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Patent number: 6882084Abstract: An electromechanical motor (1) has a driving element (20) comprising two electromechanical vibrators (22, 24). The two electromechanical vibrators (22, 24) are interconnected by a link member (26). The electromechanical vibrators (22, 24) are, at the ends (21, 23) connected to the link (26), attached to a backbone (12) of a stator (10) by a respective resilient joint member (14, 16). A mechanical connection to the backbone (12) is thus introduced essentially between the vibrator (22, 24) and the link (26). A vibration of one of the electromechanical vibrators (22, 24) is transferred into a tilting or torsion of one of the joint members (14, 16), and a similar vibration of the other electromechanical vibrator (22, 24) provides a tilting or torsion of the other joint member (14, 16). The liner (26), interconnecting the vibrators (22, 24) is subsequently caused to deform and move.Type: GrantFiled: June 13, 2003Date of Patent: April 19, 2005Assignee: Piezomotor Uppsala ABInventors: Stefan Johansson, Christer Mattsson
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Publication number: 20040251782Abstract: An electromechanical motor (1) has a driving element (20) comprising two electromechanical vibrators (22, 24). The two electromechanical vibrators (22, 24) are interconnected by a link member (26). The electromechanical vibrators (22, 24) are, at the ends (21, 23) connected to the link (26), attached to a backbone (12) of a stator (10) by a respective resilient joint member (14, 16). A mechanical connection to the backbone (12) is thus introduced essentially between the vibrator (22, 24) and the link (26). A vibration of one of the electromechanical vibrators (22, 24) is transferred into a tilting or torsion of one of the joint members (14, 16), and a similar vibration of the other electromechanical vibrator (22, 24) provides a tilting or torsion of the other joint member (14, 16). The link (26), interconnecting the vibrators (22, 24) is subsequently caused to deform and move.Type: ApplicationFiled: June 13, 2003Publication date: December 16, 2004Inventors: Stefan Johansson, Christer Mattsson
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Patent number: 6747394Abstract: An electromechanical motor according to the present invention has a stator with a drive element consisting of two serially connected bending sections and a central drive pad, for actuating on a body to be moved. The drive element extends parallel to the body. The drive pad and/or the body is elastic. Preferably, the drive pad has a lower stiffness than the body. The elasticity of the drive pad allows an assimilation of a part of the travelling wave energy applied to the drive element. The backbone of the stator is arranged to restrict the drive element from being removed from the body, but at the same time allow the drive element to be translated towards the body and even leave the mechanical contact with the backbone for shorter periods of time. Support means are preferably designed with convex surfaces in order to allow self-centering of the different parts of the motor.Type: GrantFiled: June 19, 2002Date of Patent: June 8, 2004Assignee: Piezomotor Uppsala ABInventors: Stefan Johansson, Olov Johansson, Christer Mattsson, Anders Jansson, Jonas Eriksson
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Patent number: 6710950Abstract: A support for an optical system of a digital camera is constructed which provides adjustable positioning of the lens elements in response to signals from the camera control processor. The support comprises multiple tubes, mounted for relative coaxial movement, which support a lens element. At least one of the tubes is adjustable in position relative to a main support tube. The adjustable tube is engageable by piezoelectric elements. Each piezoelectrical element is mounted to a flexible printed circuit board which contains the camera operating system and is mounted on the support tube.Type: GrantFiled: June 5, 2002Date of Patent: March 23, 2004Assignee: Nokia Mobile Phones LimitedInventors: Jarkko Rouvinen, Ilpo Kauhaniemi, Pentti Ahlgren, Stefan Johansson, Christer Mattsson
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Publication number: 20030234596Abstract: An electromechanical motor according to the present invention has a stator with a drive element consisting of two serially connected bending sections and a central drive pad, for actuating on a body to be moved. The drive element extends parallel to the body. The drive pad and/or the body is elastic. Preferably, the drive pad has a lower stiffness than the body. The elasticity of the drive pad allows an assimilation of a part of the travelling wave energy applied to the drive element. The backbone of the stator is arranged to restrict the drive element from being removed from the body, but at the same time allow the drive element to be translated towards the body and even leave the mechanical contact with the backbone for shorter periods of time. Support means are preferably designed with convex surfaces in order to allow self-centering of the different parts of the motor.Type: ApplicationFiled: June 19, 2002Publication date: December 25, 2003Inventors: Stefan Johansson, Olov Johansson, Christer Mattsson, Anders Jansson, Jonas Eriksson
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Publication number: 20030227559Abstract: A support for an optical system of a digital camera is constructed which provides adjustable positioning of the lens elements in response to signals from the camera control processor. The support comprises multiple tubes, mounted for relative coaxial movement, which support a lens element. At least one of the tubes is adjustable in position relative to a main support tube. The adjustable tube is engageable by piezoelectric elements. Each piezoelectrical element is mounted to a flexible printed circuit board which contains the camera operating system and is mounted on the support tube.Type: ApplicationFiled: June 5, 2002Publication date: December 11, 2003Inventors: Jarkko Rouvinen, Ilpo Kauhaniemi, Pentti Ahlgren, Stefan Johansson, Christer Mattsson
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Publication number: 20030227560Abstract: A digital camera is constructed with multiple lenses mounted in a pair of tubular elements which are nested together for relative axial movement. Movement is provided by piezoelectric actuators mounted externally to a support tube on flexible printed circuit board elements. Each lens tube is provided with a drive rail which extends at least partially over the length of the lens tube and projects radially outward from the periphery of each of the tubes. The rails are accessible to the engagement pads of the piezoelectric actuators to allow the transmission of drive forces to each of the tubes.Type: ApplicationFiled: December 10, 2002Publication date: December 11, 2003Inventors: Christer Mattsson, Stefan Johansson, Anders Jansson
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Publication number: 20030158120Abstract: There is provided a combination product comprising: (A) melagatran or a pharmaceutically-acceptable derivative thereof; and (B) a Factor Xa inhibitor or a pharmaceutically-acceptable derivative thereof, wherein each components (A) and (B) is formulated in admixture with a pharmaceutically-acceptable adjuvant, diluent or carrier, as well as the use of such a combination product in the treatment of a condition where anticoagulant therapy is indicated.Type: ApplicationFiled: December 4, 2002Publication date: August 21, 2003Applicant: AstrZeneca ABInventor: Christer Mattsson
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Publication number: 20030153506Abstract: There is provided a combination product comprising: (A) melagatran or a pharmaceutically-acceptable derivative thereof; and (B) a Factor VIIa inhibitor or a pharmaceutically-acceptable derivative thereof, wherein each of components (A) and (B) is formulated in admixture with a pharmaceutically-acceptable adjuvant, diluent or carrier, as well as the use of such a combination product in the treatment of a condition where anticoagulant therapy is indicated.Type: ApplicationFiled: December 6, 2002Publication date: August 14, 2003Inventors: Ruth Bylund, Christer Mattsson
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Patent number: 5626869Abstract: The present invention relates to pharmaceutical compostions containing a defined lipid system of at least two lipid components where at least one of the lipid components is amphiphatic and polar and one is nonpolar wherein the pharmaceutically active compound is a heparin or a fragment thereof. In the compositions a water containing solvent also is included in such an amount that discrete lipid particles are present, and said compositions can be adapted to various administration forms such as rectal, oral, buccal, transdermal etc.Type: GrantFiled: June 29, 1995Date of Patent: May 6, 1997Assignee: Pharmacia & Upjohn ABInventors: H.ang.kan Nyqvist, Monica Einarsson, Christer Mattsson