Patents Assigned to Fronius Schweissmaschinen Produktion GmbH & Co. KG
  • Patent number: 6605800
    Abstract: The invention describes a control device for a welding device (1), consisting of a digital control device (4), in particular a microprocessor control, and a welding process control unit, comprising a signal processing unit, hereinafter referred to as SP unit, and a pulse width modulator, hereinafter referred to as PWM, and at least one external component, such as a power component (3) or an input and/or output device (22), etc., for example. The welding process control is digitally operated by the welding process control unit and the configuration and parameter settings for the welding process control unit are handled by the control device (4) through software means.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: August 12, 2003
    Assignee: Fronius Schweissmaschinen Produktion GmbH & Co. KG
    Inventors: Roland Schick, Franz Niedereder, Andreas Burgstaller, Michael Brunner
  • Patent number: 6570132
    Abstract: The invention describes a method of operating a data exchange between an external component, in particular a remote control unit (23), and a welding unit (1), in particular a current source. A serial data exchange is run between a welding unit (1), in particular a current source, and an external component, in particular a remote control unit (23), directly across the welding lines, in particular across the connecting lines (36) to the welding torch (10) and to the workpiece (16), on the basis of digital levels.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: May 27, 2003
    Assignee: Fronius Schweissmaschinen Produktion GmbH & Co. KG
    Inventors: Michael Brunner, Michael Zauner, Helmut Friedl, Friedrich Oberzaucher
  • Patent number: 6549441
    Abstract: The invention relates to a voltage switching device (23) consisting of a power rectifier (26), a boost chopper (34, 35) having at least one storage element (50, 51), a transformer (40), a switching device (59), a control device (4) and a plurality of mains leads (27 to 29), the power rectifier (26) being connected to an energy source (24) by the mains leads (27 to 29) and a consumer (25) with a secondary winding (42) of the transformer (40), a power evaluating device (32) supplied with voltage from the energy source (24) being provided, the output of which is connected to the switching device (59) or to the control device (4).
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: April 15, 2003
    Assignee: Fronius Schweissmaschinen Produktion GmbH & Co, KG
    Inventors: Hubert Aigner, Alfred Hiesmayr, Friedrich Oberzaucher, Walter Pammer
  • Patent number: 6479793
    Abstract: The invention describes a method of controlling a welding unit (1) and a current source (2), in which various welding parameters, such as a welding current, a welding wire diameter, a welding method etc., for example, can be set by a user from an input and/or output device (22). The welding unit (1) and the current source (2) are then activated by the control device (4) in accordance with the predetermined welding parameters, different desired values being stored in a memory device for the different welding parameters. The desired values for at least one welding parameter of a welding method are stored in the memory device for the minimum and maximum values in the form of a minimum and maximum curve and when a welding parameter falling between the minimum and maximum values or curves is retrieved or set, the control device (4) determines the other desired values of the other welding parameters of this welding process by means of a computing method, in particular by means of an interpolation calculation.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: November 12, 2002
    Assignee: Fronius Schweissmaschinen Produktion GmbH & Co. KG
    Inventors: Manfred Wittmann, Franz Niedereder, Helmut Friedl
  • Patent number: 6476354
    Abstract: The invention describes a method of controlling a welding unit (1) and a current source (2), in which various welding parameters, such as a welding current, a welding wire diameter, a welding method etc., for example, can be set by a user from an input and/or output device (22). The set welding parameters are applied to a control device (4). The welding unit (1) and the current source (2) are then activated by the control device (4) in accordance with the predetermined welding parameters. Prior to, during and/or after start-up of the welding process, the user can set a surface area or a cross section of a weld seam, in particular a fillet weld, from the input and/or output device (22), after which the control device (4) scans and/or retrieves and displays desired values for additional parameters needed to form the weld seam and/or for the welding procedure, stored in a memory device in particular.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: November 5, 2002
    Assignee: Fronius Schweissmaschinen Produktion GmbH & Co., KG
    Inventors: Vinzenz Jank, Manfred Rührnössl, Rupert Frauenschuh, Helmut Friedl
  • Patent number: 6462309
    Abstract: The invention describes a welding torch (1), consisting of a main body (2) comprising at least one part, in which a feed device (10) for a welding rod (7) is disposed and which is joined to a connecting piece (21) in order to receive a contact pipe (23). A guide device (32) for the welding rod (7) is being disposed in the feed device (10) extending at an angle in the direction from the connecting piece (21) into the contact pipe (23). A bore (36) for the welding rod (7) and a guide bore (37) of a larger diameter (40) concentric therewith for the guide device (32) is provided in the contact pipe (23), the guide device (32) extending into the guide bore (37) of the contact pipe (23).
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: October 8, 2002
    Assignee: FRONIUS Schweissmaschinen Produktion GmbH & Co. KG
    Inventor: Walter Wimroither
  • Patent number: 6369548
    Abstract: A voltage switch-over device comprises a first power rectifier, a second power rectifier, and a charger, the first power rectifier being connected to the charger. Mains leads connect the charger to a power supply, and a mains evaluation unit is coupled to the charger, the mains evaluation unit switchably connecting the second power rectifier to the power supply and to two consumers consisting of balanced primary modules activating at least one transformer. There is a first connection including a capacitor between the positive potential of the first power rectifier and the negative potential of the second power rectifier, and a second connection includes a capacitor between the negative potential of the first power rectifier and the positive potential of the second power rectifier, a respective one of the capacitors being arranged in an independent current circuit supplying a respective one of the consumers. A control device is connected to the consumers.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: April 9, 2002
    Assignee: Fronius Schweissmaschinen Produktion GmbH & Co. KG
    Inventors: Friedrich Oberzaucher, Georg Krenhuber
  • Patent number: 6326581
    Abstract: The invention relates to a blow torch (6) for a cutting process, in particular a steam cutting process, comprising a control device (3), a liquid supply system, in particular a container (5) for a liquid (8), and a power source (2), the blow torch (6) being connected via lines (9, 10) to the power source (2). The blow torch (6) is connected by a supply line (7) to the liquid supply system. At least one duct or flow passage for the liquid (8) having a predeterminable cross section and path is provided in the blow torch (6) and is designed to convert the liquid (8) into a gaseous state, in particular a gas (19).
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: December 4, 2001
    Assignee: Fronius Schweissmaschinen Produktion GmbH & Co. KG
    Inventors: Johann Laimer, Herbert Störi, Heribert Pauser
  • Patent number: 6200519
    Abstract: The invention concerns a welding torch with a contact socket and a feed device. The feed device is arranged to hold a welding rod and guides the welding rod obliquely relative to a bore in the contact socket such that an outer surface of the welding rod abuts a defined inner surface of the bore at least over a partial region of the bore.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: March 13, 2001
    Assignee: Fronius Schweissmaschinen Produktion GmbH & Co. KG
    Inventor: Walter Wimroither