Patents by Inventor Hakan Dahlquist
Hakan Dahlquist 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: 10960480Abstract: The invention refers to a chuck pallet (1.3) with solid groove-sidewalls (2.3) for clamping chucks (1.1), whereby the x-y-references (2.5) of the chuck pallet (1.3) are allocated in the same plane (2.1) as the z-references (2.1) and the x-y-references (2.5) are also allocated at the solid groove-sidewalls (2.3). The solid groove-sidewalls (2.3) have thereby a tapered profile.Type: GrantFiled: June 2, 2015Date of Patent: March 30, 2021Assignee: System 3R International ABInventor: Håkan Dahlquist
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Patent number: 10919096Abstract: A modular clamping device for a tool or a workpiece includes: a pallet having a plurality of x-y references and a plurality of z references for alignment with a chuck and a clamping unit, which is arranged in a clamped state concentrically at an outside of the chuck. In the clamped state, a tubular part is arranged concentrically between the pallet and the clamping unit, the tubular part being connected to the pallet by a first connecting mechanism and connected to the clamping unit by a second connecting mechanism.Type: GrantFiled: June 24, 2019Date of Patent: February 16, 2021Assignee: SYSTEM 3R INTERNATIONAL ABInventors: Jan Bergwall, Hakan Dahlquist, Jonas Rosengren
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Publication number: 20200001375Abstract: A modular clamping device for a tool or a workpiece includes: a pallet having a plurality of x-y references and a plurality of z references for alignment with a chuck and a clamping unit, which is arranged in a clamped state concentrically at an outside of the chuck. In the clamped state, a tubular part is arranged concentrically between the pallet and the clamping unit, the tubular part being connected to the pallet by a first connecting mechanism and connected to the clamping unit by a second connecting mechanism.Type: ApplicationFiled: June 24, 2019Publication date: January 2, 2020Inventors: Jan Bergwall, Hakan Dahlquist, Jonas Rosengren
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Publication number: 20170120360Abstract: The invention refers to a chuck pallet (1.3) with solid groove-sidewalls (2.3) for clamping chucks (1.1), whereby the x-y-references (2.5) of the chuck pallet (1.3) are allocated in the same plane (2.1) as the z-references (2.1) and the x-y-references (2.5) are also allocated at the solid groove-sidewalls (2.3). The solid groove-sidewalls (2.3) have thereby a tapered profile.Type: ApplicationFiled: June 2, 2015Publication date: May 4, 2017Applicant: System 3R International ABInventor: Håkan Dahlquist
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Patent number: 8308169Abstract: A chucking fixture for a tool or a workpiece, comprising a chuck and a toolholder or workholder matching the chuck, wherein the chuck has posts having bearing surfaces for orienting the tool or workpiece in an X and Y direction and having end faces for establishing a plane perpendicular to the Z direction, wherein devices for measuring the distance between the chuck and the toolholder or workholder are formed in the bearing surfaces and in the end faces.Type: GrantFiled: March 2, 2007Date of Patent: November 13, 2012Assignee: System 3R International ABInventor: Håkan Dahlquist
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Patent number: 8134714Abstract: The invention provides a method and system for measuring the length of a reflective resonator, by analyzing an electromagnetic spectrum emitted therefrom. The emitted spectrum is used for estimating a first cavity length. This estimation is thereafter improved, by first computing at least one interference number for the spectrum, adjust this value to e.g. an integer or half-integer depending on the configuration of the resonator, and thereafter re-calculating the length of the resonator using the adjusted value of the interference number. The above is an efficient way of improving the accuracy in the determination of a physical property of a resonator.Type: GrantFiled: October 9, 2009Date of Patent: March 13, 2012Assignee: Acreo AB and System 3R International ABInventors: Anders Djupsjobacka, Hakan Dahlquist
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Patent number: 8087651Abstract: A coupling device having a first coupling part 3 provided with at least one projecting region, the regions of the first coupling part which project in the z direction being arranged eccentrically or centrally, and the projecting regions having conical outer surfaces formed with at least one angle relative to the z direction, the elastic regions 4 pointing in the direction of the center being formed in a radially parallel manner within the second coupling part 3. The the projecting regions of the first coupling part engage in the elastic regions 4 of the second coupling part 3 for the x-y orientation in the z direction. The second coupling part 3 is of one-piece design and can be produced in one operation.Type: GrantFiled: March 23, 2006Date of Patent: January 3, 2012Assignee: System 3R International ABInventor: Hakan Dahlquist
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Publication number: 20110176143Abstract: The invention provides a method and system for measuring the length of a reflective resonator, by analyzing an electromagnetic spectrum emitted therefrom. The emitted spectrum is used for estimating a first cavity length. This estimation is thereafter improved, by first computing at least one interference number for the spectrum, adjust this value to e.g. an integer or half-integer depending on the configuration of the resonator, and thereafter re-calculating the length of the resonator using the adjusted value of the interference number. The above is an efficient way of improving the accuracy in the determination of a physical property of a resonator.Type: ApplicationFiled: October 9, 2009Publication date: July 21, 2011Applicants: ACREO AB, SYSTEM 3R INTERNATIONAL ABInventors: Anders Djupsjobacka, Hakan Dahlquist
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Publication number: 20090315280Abstract: A chucking fixture for a tool or a workpiece, comprising a chuck and a toolholder or workholder matching the chuck, wherein the chuck has posts having bearing surfaces for orienting the tool or workpiece in an X and Y direction and having end faces for establishing a plane perpendicular to the Z direction, wherein devices for measuring the distance between the chuck and the toolholder or workholder are formed in the bearing surfaces and in the end faces.Type: ApplicationFiled: March 2, 2007Publication date: December 24, 2009Applicant: SYSTEM 3R INTERNATIONAL ABInventor: Håkan Dahlquist
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Publication number: 20080135528Abstract: A clamping device, having a first and a second coupling part, for the tool of a machine tool. The first coupling part is eccentric and comprises small rails having angular off-sets in relation to each other and limiting surfaces for exactly positioning the second coupling part in the xy plane. The second coupling part comprises lateral faces having elastic lips which rest against the limiting surfaces, a connecting device is used to exactly position the first and the second coupling part in the z plane. The second coupling part consists of a piece having various strength values, ductility values and/or hardness, whereby the areas of the lips have higher strength values, ductility values and/or harnesses than the other areas of the lips and/or areas of the second coupling part.Type: ApplicationFiled: June 13, 2005Publication date: June 12, 2008Inventors: Hakan Dahlquist, Christer Modin, Dick Ottosson
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Publication number: 20060220292Abstract: A coupling device having a first coupling part 3 provided with at least one projecting region, the regions of the first coupling part which project in the z direction being arranged eccentrically or centrally, and the projecting regions having conical outer surfaces formed with at least one angle relative to the z direction, the elastic regions 4 pointing in the direction of the centre being formed in a radially parallel manner within the second coupling part 3. The the projecting regions of the first coupling part engage in the elastic regions 4 of the second coupling part 3 for the x-y orientation in the z direction. The second coupling part 3 is of one-piece design and can be produced in one operation.Type: ApplicationFiled: March 23, 2006Publication date: October 5, 2006Inventor: Hakan Dahlquist
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Patent number: 6230079Abstract: A method for control of an industrial robot, which has a plurality of movement axes with a position sensor for each of said axes which is adapted to deliver an output signal which defines the current position of the axis, and a control system for control of the axes of the robot. Continuously during operation of the robot for at least one mechanically critical point (i) of the robot, the relevant load (&tgr;i) during a predetermined period of time (&Dgr;t) is calculated on the basis of the output signals (&phgr;1,&phgr;2 . . . &phgr;6) from the position sensors and a mathematical model of the robot.Type: GrantFiled: June 9, 1998Date of Patent: May 8, 2001Assignee: Asea Brown Boveri ABInventors: Torgny Brogårdh, Håkan Dahlquist, Staffan Elfving, Tord Henriksson
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Patent number: 4997413Abstract: A robot wrist comprising a plurality of mutaully rotatable tubular parts arranged in series with each other and a tubular member (2), such as a tool attachment, the member (2) being rotatably mounted on one (1) of the parts and, via a tubular gear, being driven by a separate motor. The motor (10, 11) has a tubular rotor (11) which, along with the tubular gear (4, 5), is concentrically arranged with the tubular member (2) to form a channel for supply and/or communication caples or light beams. The robot wrist exhibits a great orientation capacity in space while having at the same time a relatively small diameter, which enables the insertion of the part (1) into confined spaces.Type: GrantFiled: April 12, 1989Date of Patent: March 5, 1991Assignee: Asea Brown Boveri ABInventor: Hakan Dahlquist
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Patent number: 4744262Abstract: A cylindrical gear unit which includes a gear housing, a gear pinion and a gear wheel, the gear pinion being fixed to a shaft which is rotatably journalled in bearings supported by at least one bearing support. One of the bearing supports comprises a sleeve in which a roller bearing is fixedly mounted, a fixing plate supported by the gear housing, as well as a disc-shaped rib portion which interconnects the sleeve and the fixing plate. The rib portion extends substantially along the entire length of the sleeve and the fixing plate and is substantially parallel to a tangential plane on the contact line between the gear pinion and the gear wheel. In addition, at least one stop face for the sleeve is arranged at a small distance from the outside of the sleeve on at least that side of the sleeve facing away from the gear wheel.Type: GrantFiled: January 20, 1987Date of Patent: May 17, 1988Assignee: Asea AktiebolagInventor: Hakan Dahlquist
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Patent number: 4723713Abstract: When using an industrial robot together with a tool which is fed by a fluid, for example a nozzle for water jet cutting, the feed conduits often restrict the orientation capacity of the robot. This is avoided by providing a conduit which extends inside the robot arm and the wrist and comprises swivels, so that the parts of the wrist are able to rotate relative to each other unobstructed by the conduit.Type: GrantFiled: June 30, 1986Date of Patent: February 9, 1988Assignee: ASEA AktiebolagInventor: Hakan Dahlquist