Patents Assigned to Institutet For Verkstadsteknisk Forskning
  • Patent number: 6383442
    Abstract: An apparatus for injection molding or forming of work pieces, including closed profile work pieces, is provided that is less expensive and requires less space than known press apparatus. The apparatus locks a molding tool assembled from two or more tool pieces to define the shape of a molded or formed product using a frame, and one or more presses. The frame defines an interior space extending from a first end of the frame to an opposed second end of the frame for receiving a molding tool. The presses are placed within the frame and act in concert with the frame to apply pressure to a molding tool. The interior space is large enough to receive an assembled molding tool into the interior space of the frame, while not permitting removal of the tool pieces from the product within the interior space.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: May 7, 2002
    Assignee: Institutet For Verkstadsteknisk Forskning
    Inventor: Göran Palmers
  • Patent number: 6151109
    Abstract: Device for detecting and calculating focus point position (2), shape (3) and power distribution of a laser beam after a focussing lens, and which at least incorporates a laser source (10), the focussing lens (4), a light affecting body (5, 6), a light sensor (7), and means for calculation (9).
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: November 21, 2000
    Assignee: Institutet For Verkstadsteknisk Forskning
    Inventors: Bernt von Bromssen, Thomas Nilsson
  • Patent number: 5348697
    Abstract: A method and apparatus for the production of reinforced plastic objects uses a body form around which a casing having a cover is placed. The cover includes two cover units which between them defines an opening having an adjustable size and position. The opening provides access into the body form so that reinforced plastic material may be applied therein. The size of the opening is minimized to reduce the amount of environmentally harmful substances escaping therefrom, such as styrene. The position and size of the opening relative to the body form is adjustable to provide a convenient access into the body form.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: September 20, 1994
    Assignee: Institutet For Verkstadsteknisk Forskning
    Inventors: Goran Palmers, Max Maupoix
  • Patent number: 5152455
    Abstract: A device for dispensing a string or dab of liquid or plastic substance, such as putty, glue, paint or lubricant, to an object includes a pump for feeding the substance through a conduit to a nozzle having a fine discharge opening. A booster is connected to the conduit between the pump and the nozzle and a pressure medium is supplied to the booster. A substance control valve controls flow of the substance through the nozzle, the substance control valve being connected to the pressure medium and including a valve body which is biased in a closing direction by the substance and which is biased in an opening direction by the pressure medium via an actuator. The actuator includes a pressure member, one side of which is actuated by the pressure medium and the opposite side of which is actuated by the substance, the area of said pressure member being considerably larger than the area of said valve body. The device further includes a pressure medium control valve for controlling the substance control valve.
    Type: Grant
    Filed: January 2, 1991
    Date of Patent: October 6, 1992
    Assignee: Institutet for Verkstadsteknisk Forskning
    Inventor: Goran Palmers
  • Patent number: 4387635
    Abstract: A machine tool comprising a portal stand having a number of, preferably four, screw pillars and a moveable yoke driven and guided along the screw pillars by means of nuts preferably roller nuts, in the yoke. Tools, machining devices or the like can be attached to the yoke. The nuts are driven simultaneously by a drive motor through a drive shaft extending therefrom. A very good parallel guiding of the yoke is achieved despite uneven loads. When the power demand is high, for example during heavy pressings, an auxiliary cylinder is provided, the piston rod of which is fixed to the yoke.
    Type: Grant
    Filed: May 5, 1981
    Date of Patent: June 14, 1983
    Assignee: Institutet for Verkstadsteknisk Forskning
    Inventors: Kaj Abbestam, Goran Palmers
  • Patent number: 4302655
    Abstract: A method and a device for adaptive control of the weld parameters in automatic arc welding processes to weld together two workpieces. The arc is arranged to oscillate in the transverse direction of the groove and by measuring the welding current and/or welding voltage on two separate occasions during the deposition of the root run characteristic values are obtained. The values obtained on these two occasions are combined mathematically with a calculated rated value. This rated value corresponds to the height of the root bead of the weld. The discrepancy of the obtained values from the calculated rated value is used to control means arranged to set the weld parameters, thus ensuring that a homogeneous weld is obtained, irrespective of groove variations, such as variations in the gap width between the two workpieces, or variations of other factors affecting the weld.
    Type: Grant
    Filed: June 20, 1979
    Date of Patent: November 24, 1981
    Assignee: Institutet for Verkstadsteknisk Forskning IVF
    Inventor: Lars G. Edling