Patents by Inventor Gunnar Karlsson
Gunnar 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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Patent number: 11975931Abstract: The present invention relates to a method for moving a heavy object into a confined space. The method comprises providing the heavy object in an initial position, the heavy object having an underside resting on a ground surface and comprising an inducible gas-cushion arrangement which in its inactive state causes the underside of the heavy object to maintain contact with the ground surface; activating the inducible gas-cushion arrangement by forming a gas cushion between the underside of the heavy object and the ground surface, the gas cushion generating a lifting force causing the underside of the heavy object to lose contact with the ground surface; moving the heavy object relative to the confined space until the underside of the heavy object at least levels with the supporting surface of the confined space; and moving the heavy object into its final position utilizing the lifting force of the gas-cushion.Type: GrantFiled: September 28, 2021Date of Patent: May 7, 2024Assignee: Volvo Truck CorporationInventors: Gunnar Björkman, Viktor Karlsson
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Patent number: 11957885Abstract: An injection device with a feedback mechanism includes a housing for a medicament container having a stopper, a plunger rod for acting on the stopper, a button interactively connected to the plunger rod, an activation member having a flexible locking device releasably connected to the plunger rod, a drive force device, a locking member slidable between positions in which the locking member either completely or partially surrounds the flexible locking device, and a guide rod. Audible and tactile information that an injection has started is provided by the plunger rod's hitting the stopper.Type: GrantFiled: November 12, 2021Date of Patent: April 16, 2024Assignee: SHL MEDICAL AGInventors: Sebastian Karlsson, Gunnar Elmén
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Patent number: 9492881Abstract: A welding device and method for powder welding. The welding device includes at least a first container for fluxing agent in powder form, which first container includes an outlet with an outlet direction arranged for outflow of powder. The welding device further includes a first member for inlet of heated gas into the first container. The welding method includes arranging powder in the first container. Gas is heated and is allowed to pass into the first container for heating of the powder. The powder is then deposited on a welding area.Type: GrantFiled: April 30, 2008Date of Patent: November 15, 2016Assignee: ESAB ABInventors: Rolf Gösta Larsson, Sievert Karl Gunnar Karlsson
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Patent number: 8562382Abstract: A system and method of starting a water jet propulsion system for a ship in which the propulsion system includes a stator shell adapted to be mounted to the hull and having a nozzle ending in an outlet with a cross-sectional outlet area, an impeller housing attached to the stator shell and having an upstream inlet, and an impeller rotatably mounted in the impeller housing for receiving water from the inlet and discharging it through the nozzle of the stator shell so as to create a water jet upon rotation of the impeller. The method includes reducing the outlet area by partly closing the nozzle during a start up phase of the water jet propulsion system, wherein there is provided a back flow hindering arrangement arranged to hinder air to enter into the impeller housing via the nozzle.Type: GrantFiled: March 26, 2009Date of Patent: October 22, 2013Assignee: Rolls-Royce AktiebolagInventors: Sven-Gunnar Karlsson, Reima Aartojarvi, Lars Andersson
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Patent number: 8096290Abstract: In an internal combustion engine, contaminated air in the crankcase creates problems. As a rule, the contaminated air is led into the engine's inlet manifold, and this can disrupt the smooth running of the engine. The invention eliminates the problem by having a filter connected to the crankcase, such that contaminated air from the crankcase must pass through this filter, where it is freed of its contaminants.Type: GrantFiled: December 29, 2003Date of Patent: January 17, 2012Inventor: Karl-Gunnar Karlsson
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Publication number: 20110290763Abstract: A welding device (1) for powder welding and a method for powder welding is described. The welding device comprises at least a first container (4) for fluxing agent in powder form, which first container (4) comprises an outlet (6) with an outlet direction (7) arranged for outflow of powder. The welding device (1) comprises a first member for inlet of heated gas into the first container. According to the method powder is arranged in the first container. Gas is heated and is allowed to pass into the first container (4) for heating of the powder. The powder is then fed out on a welding area (3).Type: ApplicationFiled: April 30, 2008Publication date: December 1, 2011Applicant: ESAB ABInventors: Rolf Gösta Larsson, Sievert Karl Gunnar Karlsson
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Publication number: 20110045717Abstract: A system and method of starting a water jet propulsion system for a ship in which the propulsion system includes a stator shell adapted to be mounted to the hull and having a nozzle ending in an outlet with a cross-sectional outlet area, an impeller housing attached to the stator shell and having an upstream inlet, and an impeller rotatably mounted in the impeller housing for receiving water from the inlet and discharging it through the nozzle of the stator shell so as to create a water jet upon rotation of the impeller. The method includes reducing the outlet area by partly closing the nozzle during a start up phase of the water jet propulsion system, wherein there is provided a back flow hindering arrangement arranged to hinder air to enter into the impeller housing via the nozzle.Type: ApplicationFiled: March 26, 2009Publication date: February 24, 2011Applicant: Rolls-Royce AktiebolagInventors: Sven-Gunnar Karlsson, Reima Aartojarvi, Lars Andersson
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Patent number: 7633978Abstract: A laser arrangement is provided, in which a Lyot filter arrangement is operative to effect single mode operation. The birefringent element of the Lyot filter arrangement has a cavity folding mirror on one side thereof and a polarizing element on another side thereof, such that the free spectral range of the Lyot filter is improved. Preferably, the Lyot filter arrangement and the laser gain material are located in different branches of the folded cavity.Type: GrantFiled: June 13, 2006Date of Patent: December 15, 2009Assignee: Cobolt ABInventors: Jonas Hellström, Gunnar Karlsson, Håkan Karlsson
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Publication number: 20090268763Abstract: A laser arrangement is provided, in which a Lyot filter arrangement is operative to effect single mode operation. The birefringent element of the Lyot filter arrangement has a cavity folding mirror on one side thereof and a polarizing element on another side thereof, such that the free spectral range of the Lyot filter is improved. Preferably, the Lyot filter arrangement and the laser gain material are located in different branches of the folded cavity.Type: ApplicationFiled: June 13, 2006Publication date: October 29, 2009Applicant: COBOLT ABInventors: Jonas Hellstrom, Gunnar Karlsson, Hakan Karlsson
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Patent number: 7321558Abstract: A method and the corresponding apparatus for multi-plexing data flows from a number of transmission units. In the method signals are sent from the transmission units and the signals are detected at inputs of a switching unit. Signals, which are detected at a point of time when no other signal is forwarded to an output from the switching unit, are forwarded to said output, whereas signals which are detected at a point of time when another signal is forwarded to said output, are blocked.Type: GrantFiled: January 19, 2001Date of Patent: January 22, 2008Inventor: Gunnar Karlsson
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Publication number: 20060086344Abstract: In an internal combustion engine, contaminated air in the crankcase creates problems. As a rule, the contaminated air is led into the engine's inlet manifold, and this can disrupt the smooth running of the engine. The invention eliminates the problem by having a filter connected to the crankcase, such that contaminated air from the crankcase must pass through this filter, where it is freed of its contaminants.Type: ApplicationFiled: December 29, 2003Publication date: April 27, 2006Inventor: Karl-Gunnar Karlsson
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Patent number: 7029343Abstract: The present invention relates to a steering arrangement for ships propelled by water jet, comprising a steering device (6) that is pivotal about an essentially vertical shaft (5) having a first center line (C1), at least one hydraulic cylinder (2; 3) for turning said steering device (6), which hydraulic cylinder is directly or indirectly articulately connected to the ship's body at one of its ends (2B; 3B), a turning device (4) connected to said shaft (5), for attachment to a second end (2A; 3A) of said hydraulic cylinder at a distance from said shaft (5), a reversing device (7) arranged in connection with said steering device (6) about an essentially horizontal shaft (12), an additional hydraulic cylinder (9) arranged to act on the reversing device (7), the additional hydraulic cylinder (9) following the movement of the steering device (6), characterized in that all the hydraulic cylinders (2,3,9) are arranged within a sheltered space (1) located above the extension of said vertical shaft (5), which space (1Type: GrantFiled: April 30, 2003Date of Patent: April 18, 2006Assignee: Rolls-Royce AktiebolagInventor: Sven-Gunnar Karlsson
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Patent number: 6945834Abstract: The present invention relates to a steering arrangement for ships with a water jet unit, comprising a steering device that is pivotable about an essentially vertical shaft having a first center line, at least one hydraulic cylinder articulately connected at a first end of the hydraulic cylinder to the attachment flange of the water jet unit, a turning device connected to the shaft for attachment to a second end of the hydraulic cylinder at a distance from the shaft, a reversing device for pivoting the steering device, the reversing device being arranged about an essentially horizontal shaft, an additional hydraulic cylinder arranged to act on the reversing device, the additional hydraulic cylinder following the movement of the steering device, characterized in that all the hydraulic cylinders are arranged within a sheltered space located above the extension of the vertical shaft.Type: GrantFiled: November 14, 2001Date of Patent: September 20, 2005Assignee: Rolls-Royce AktiebolagInventors: Christer Häger, Sven-Gunnar Karlsson
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Publication number: 20050118898Abstract: The present invention relates to a steering arrangement for ships propelled by water jet, comprising a steering device (6) that is pivotal about an essentially vertical shaft (5) having a first centre line (C1), at least one hydraulic cylinder (2; 3) for turning said steering device (6), which hydraulic cylinder is directly or indirectly articulately connected to the ship's body at one of its ends (2B; 3B), turning device (4) connected to said shaft (5), for attachment to a second end (2A; 3A) of said hydraulic cylinder at a distance from said shaft (5), a reversing device (7) arranged in connection with said steering device (6) about an essentially horizontal shaft (12), an additional hydraulic cylinder (9) arranged to act on the reversing device (7), the additional hydraulic cylinder (9) following the movement of the steering device (6), characterised in that all the hydraulic cylinders (2,3,9) are arranged within a sheltered space (1) located above the extension of said vertical shaft (5), which space (1)Type: ApplicationFiled: April 30, 2003Publication date: June 2, 2005Inventor: Sven-Gunnar Karlsson
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Patent number: 6796857Abstract: The invention comprises a propulsion system for ships comprising an impeller (13, 14), a stator shell (1), and a impeller housing (3) for achieving a waterjet, a shaft (11, 12) for the propulsion of the impeller (13), and a bearing arrangement for the shaft (11, 12) in the stator shell (1), and preferably a sealing (15) of the shaft (11, 12) in the impeller housing (3), wherein said bearing arrangement comprises at least one sliding bearing unit (25; 26) intended to carry axial load, and which sliding bearing preferably is water lubricated.Type: GrantFiled: December 4, 2002Date of Patent: September 28, 2004Assignee: Rolls-Royce AktiebolagInventors: Jens Tornblad, Christer Häger, Sven-Gunnar Karlsson, Gunnar Styrud
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Patent number: 6778563Abstract: A microchip laser arrangement is disclosed. The arrangement is operative to emit Q-switched laser pulses at 1.54 &mgr;m. The lasing medium of the laser arrangement is preferably comprised of Yb:Er-glass, and the Q-switch is comprised of a saturable absorber of cobalt doped spinel crystal. The lasing medium is preferably bonded to the absorber to form a monolithic body, upon the surface of which there are deposited dielectric stacks forming a resonant laser cavity. Pumping of the active medium is performed by means of an InGaAs laser diode emitting light at 0.97 &mgr;m, corresponding well with the absorption of the Yb:Er-glass material.Type: GrantFiled: June 5, 2001Date of Patent: August 17, 2004Assignee: Cobolt ABInventors: Fredrik Laurell, Valdas Pasiskevicius, Boris Ivanovic Galagan, Gunnar Karlsson, Boris Ilich Denker, Sergei Evgenievich Sverchkov
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Patent number: 6767263Abstract: A propulsion system for ships having an impeller (13, 14), a stator shell (1), and an impeller housing (3) for achieving a water jet, a shaft (11, 12) for the propulsion of the impeller (13), and a bearing arrangement for the shaft (11, 12) in the stator shell (1), and preferably a sealing (15) of the shaft (11, 12) in the impeller housing (3), wherein the shaft (11, 12) consists of a light weight shaft, which has considerably lower bending rigidity than a homogenous, conventional steel shaft, and the driving force is transmitted via at least one non-flexible coupling (11B, 12A) and via the bearing arrangement which is rigid as to bending and handles the axial load, to the stator shell (1), such that a high power density is achieved.Type: GrantFiled: December 3, 2002Date of Patent: July 27, 2004Assignee: Rolls-Royce AktiebolagInventors: Jens Tornblad, Christer Häger, Sven-Gunnar Karlsson, Gunnar Styrud
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Patent number: 6711486Abstract: Drive unit for motor vehicles, comprising an engine and an automated friction clutch arranged between the engine and its gearbox, the engagement and disengagement of the clutch being controlled by a servo unit, which is controlled by a control computer to which, from various sensors there are fed values of engine speed, rotational speed of the input shaft of the gearbox, the position of the servo unit and the position of the gearsift lever. Points on a torque curve are stored in the memory of the control computer, the curve showing the torque as a function of the servo position (the clutch position). The computer is furthermore programmed to calibrate the servo unit to a pulling position, which provides a predetermined desired value of the torque, and to check, with a certain regularity, the actual value of the torque in the pulling position and, if needed, the adjust the actual value towards the desired value by changing the position of the servo unit.Type: GrantFiled: June 25, 2002Date of Patent: March 23, 2004Assignee: Volvo Lastvagnar ABInventors: Lars Gunnar Karlsson, Jan Erik Lauri, Karl Marcus Steén
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Publication number: 20040033736Abstract: The present invention relates to a steering arrangement for ships with water jet unit, comprising a steering device that is pivotable about an essentially vertical shaft having a first centre line, at least one hydraulic cylinder articulately connected at a first end of the hydraulic cylinder to the attachment flange of the water jet unit, a turning device connected to said shaft for attachment to a second end of said hydraulic cylinder at a distance from said shaft, a reversing device for pivoting the steering device, the reversing device being arranged about an essentially horizontal shaft, an additional hydraulic cylinder arranged to act on the reversing device, the additional hydraulic cylinder following the movement of the steering device, characterized in that all the hydraulic cylinders are arranged within a sheltered space located above the extension of said vertical shaft.Type: ApplicationFiled: May 8, 2003Publication date: February 19, 2004Inventors: Christer Hager, Sven-Gunnar Karlsson
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Publication number: 20030153217Abstract: The invention comprises a propulsion system for ships comprising an impeller (13, 14), a stator shell (1), and a impeller housing (3) for achieving a waterjet, a shaft (11, 12) for the propulsion of the impeller (13), and a bearing arrangement for the shaft (11, 12) in the stator shell (1), and preferably a sealing (15) of the shaft (11, 12) in the impeller housing (3), wherein said bearing arrangement comprises at least one sliding bearing unit (25; 26) intended to carry axial load, and which sliding bearing preferably is water lubricated.Type: ApplicationFiled: December 4, 2002Publication date: August 14, 2003Inventors: Jens Tornblad, Christer Hger, Sven-Gunnar Karlsson, Gunnar Styrud