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).

  • Patent number: 10960480
    Abstract: 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: Grant
    Filed: June 2, 2015
    Date of Patent: March 30, 2021
    Assignee: System 3R International AB
    Inventor: Håkan Dahlquist
  • Patent number: 10919096
    Abstract: 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: Grant
    Filed: June 24, 2019
    Date of Patent: February 16, 2021
    Assignee: SYSTEM 3R INTERNATIONAL AB
    Inventors: Jan Bergwall, Hakan Dahlquist, Jonas Rosengren
  • Publication number: 20200001375
    Abstract: 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: Application
    Filed: June 24, 2019
    Publication date: January 2, 2020
    Inventors: Jan Bergwall, Hakan Dahlquist, Jonas Rosengren
  • Publication number: 20170120360
    Abstract: 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: Application
    Filed: June 2, 2015
    Publication date: May 4, 2017
    Applicant: System 3R International AB
    Inventor: Håkan Dahlquist
  • Patent number: 8308169
    Abstract: 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: Grant
    Filed: March 2, 2007
    Date of Patent: November 13, 2012
    Assignee: System 3R International AB
    Inventor: Håkan Dahlquist
  • Patent number: 8134714
    Abstract: 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: Grant
    Filed: October 9, 2009
    Date of Patent: March 13, 2012
    Assignee: Acreo AB and System 3R International AB
    Inventors: Anders Djupsjobacka, Hakan Dahlquist
  • Patent number: 8087651
    Abstract: 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: Grant
    Filed: March 23, 2006
    Date of Patent: January 3, 2012
    Assignee: System 3R International AB
    Inventor: Hakan Dahlquist
  • Publication number: 20110176143
    Abstract: 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: Application
    Filed: October 9, 2009
    Publication date: July 21, 2011
    Applicants: ACREO AB, SYSTEM 3R INTERNATIONAL AB
    Inventors: Anders Djupsjobacka, Hakan Dahlquist
  • Publication number: 20090315280
    Abstract: 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: Application
    Filed: March 2, 2007
    Publication date: December 24, 2009
    Applicant: SYSTEM 3R INTERNATIONAL AB
    Inventor: Håkan Dahlquist
  • Publication number: 20080135528
    Abstract: 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: Application
    Filed: June 13, 2005
    Publication date: June 12, 2008
    Inventors: Hakan Dahlquist, Christer Modin, Dick Ottosson
  • Publication number: 20060220292
    Abstract: 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: Application
    Filed: March 23, 2006
    Publication date: October 5, 2006
    Inventor: Hakan Dahlquist
  • Patent number: 6230079
    Abstract: 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: Grant
    Filed: June 9, 1998
    Date of Patent: May 8, 2001
    Assignee: Asea Brown Boveri AB
    Inventors: Torgny Brogårdh, Håkan Dahlquist, Staffan Elfving, Tord Henriksson
  • Patent number: 4997413
    Abstract: 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: Grant
    Filed: April 12, 1989
    Date of Patent: March 5, 1991
    Assignee: Asea Brown Boveri AB
    Inventor: Hakan Dahlquist
  • Patent number: 4744262
    Abstract: 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: Grant
    Filed: January 20, 1987
    Date of Patent: May 17, 1988
    Assignee: Asea Aktiebolag
    Inventor: Hakan Dahlquist
  • Patent number: 4723713
    Abstract: 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: Grant
    Filed: June 30, 1986
    Date of Patent: February 9, 1988
    Assignee: ASEA Aktiebolag
    Inventor: Hakan Dahlquist