Patents by Inventor Per Gustafsson

Per Gustafsson 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).

  • Publication number: 20070245693
    Abstract: The present invention relates to a method, use of the method and a device for making a seal (9) in a portion (7) of a material web (1). The material web (1) comprises a first elongate section (2) with a first number of layers of material (20, 21), and a second elongate section (3) with a second number of layers of material (20), at least one of said layers of material (20) being included in both the first and the second section (2, 3), said portion (7) having an extent that intersects a transition (5) from the first section (2) to the second section (3) of the material web (1), the method comprising connecting, in said portion (7), opposite surfaces of the layers of material (20, 21) of the material web (1) to each other. The inventive method is characterised by forming ridges (15) and valleys (16) in said portion (7), and orienting said ridges (15) and valleys (16) in such a manner that they have an extent intersecting said transition (7).
    Type: Application
    Filed: June 3, 2005
    Publication date: October 25, 2007
    Applicant: ECO LEAN RESEARCH & DEVELOPMENT A/S
    Inventors: Per Gustafsson, Bengt Jonsson
  • Publication number: 20070199652
    Abstract: The invention relates to a device (1) for producing container blanks (2) from a material web (3), which container blanks in the filled state form container of a collapsible type, said device comprising at least one sealing tool (7) with an extended rib (9), the sealing tool (7) being movable to bring the rib (9) into engagement with the material web (3) for joining opposite wall portions of the material web (3). The device is characterised by a compensating means (14) for ensuring abutment of the rib (9) along its entire length against the material web (3). The invention also relates to a method and a machine for producing container blanks.
    Type: Application
    Filed: March 23, 2005
    Publication date: August 30, 2007
    Inventor: Per Gustafsson
  • Publication number: 20070184956
    Abstract: A device for producing container blanks (2) from a material web (3), comprising a plurality of tools (5) supported by a rotary tool holder (4). The tool holder (4) is on rotation arranged to move each tool (5) along a working path (WP) along which each tool (5) is engageable with the material web (3) for joining of opposite wall portions of the material web (3) along connecting portions (11), and a return path (RP) along which each tool (5) is disengageable from the material web (3). Each tool (5) is arranged to be moved together with the material web (3) when the tool (5) is moved along said working path (WP) and said tool holder (4) acts as a deflecting means for the material web (3) when this moves together with the respective tools (5) along said working path (WP). The present invention also relates to a corresponding method for producing container blanks.
    Type: Application
    Filed: March 23, 2005
    Publication date: August 9, 2007
    Inventor: Per Gustafsson
  • Patent number: 7140406
    Abstract: The invention relates to a device for compensating for pressure drop in a product pipe through which a liquid flows and a system comprising such a device. The device comprises a collapsible tube portion, which is connectible to the product pipe and is characterized by a limiting means, which is adapted to counteract stretching of the tube portion in the circumferential direction and which is adapted to allow free collapsing of the tube portion.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: November 28, 2006
    Assignee: Eco Lean Research & Development A/S
    Inventor: Per Gustafsson
  • Publication number: 20060201579
    Abstract: The invention relates to a device for compensating for pressure drop in a product pipe through which a liquid flows and a system comprising such a device. The device comprises a collapsible tube portion, which is connectible to the product pipe and is characterized by a limiting means, which is adapted to counteract stretching of the tube portion in the circumferential direction and which is adapted to allow free collapsing of the tube portion.
    Type: Application
    Filed: May 11, 2006
    Publication date: September 14, 2006
    Inventor: Per Gustafsson
  • Patent number: 7066211
    Abstract: The invention relates to a device for compensating for pressure drop in a product pipe through which a liquid flows, and a system comprising such a device. The device comprises a collapsible tube portion, which is connectible to the product pipe, and is characterised by a limiting means, which is adapted to counteract stretching of the tube portion in the circumferential direction and which is adapted to allow free collapsing of the tube portion.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: June 27, 2006
    Assignee: Eco Lean Research & Development A/S
    Inventor: Per Gustafsson
  • Publication number: 20060054232
    Abstract: The invention relates to a device for compensating for pressure drop in a product pipe through which a liquid flows, and a system comprising such a device. The device comprises a collapsible tube portion, which is connectible to the product pipe, and is characterised by a limiting means, which is adapted to counteract stretching of the tube portion in the circumferential direction and which is adapted to allow free collapsing of the tube portion.
    Type: Application
    Filed: August 20, 2003
    Publication date: March 16, 2006
    Inventor: Per Gustafsson
  • Publication number: 20050070411
    Abstract: The present invention relates to an apparatus for manufacturing packages, comprising a fist plurality of arms (2) which are at substantially equal mutual spacing, on symmetric distribution about a circle, radially extend about a geometric axis (X) and located in a common plane at right angles to the axis, as well as a second plurality of treatment stations (4) which are disposed a radial distance from the axis (X), as well as rotary means which are disposed to rotate the arms intermittently about the axis (X) between the treatment stations (4), the arms (2) and the treatment stations (4) being disposed in relation to one another such that the position of the arms (2) and the position of the treatment stations (4) coincide after the intermittent rotations. In a single indexing state, the apparatus (1) is configured to be disposed to rotate the arms to one distribution at a time, and in a double indexing state, to be disposed to rotate the arms (2) two distributions at a time.
    Type: Application
    Filed: January 14, 2003
    Publication date: March 31, 2005
    Applicant: Tetra Laval Holding & Finance S.A..
    Inventors: Per Gustafsson, Jan Lovenbrandt, Bengt Malmstrom
  • Publication number: 20050001355
    Abstract: In a method for producing plastic parts, which comprises the step that the plastic parts are injection-moulded by means of a moulding tool (5; 107), the moulding tool (5; 107) is displaced after the injection-moulding together with the plastic part. An apparatus for the production of plastic parts is also described. The apparatus has an injection-moulding nozzle (23) and a moulding tool (5; 107) with co-operating mould parts or halves (6), the tool having an open and a closed position. Further, the apparatus has means (2; 100) for displacing each plastic part in relation to an injection-moulding position where injection-moulding takes place and means (2; 108, 109) for displacing the moulding tool (5; 107) in the closed state together with the plastic part.
    Type: Application
    Filed: January 14, 2003
    Publication date: January 6, 2005
    Inventors: Per Gustafsson, Stefan Forss
  • Patent number: 6835342
    Abstract: An apparatus and method for moulding opening devices onto a packaging material sheet at respective holes provided in the sheet includes first and second mould tools arrangeable in a closed position so as to be in contact with opposite sides of the sheet and in an open position so as to be positioned distally from the sheet. In the closed positions a mould cavity is formed between the first and second mould tools for accommodating a hole edge in the sheet. One of the mould tools includes a pair of half mould tools which are simultaneously moved from the open position to the closed position and vice versa such that the direction of movement of each of said half mould tools between the open and closed positions have a directional component extending substantially parallel to the extension plane and a directional component extending substantially perpendicularly to the extension plane, for reducing wear of the mould tools.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: December 28, 2004
    Assignee: Tetra Laval Holdings & Finance SA
    Inventors: Per Gustafsson, Antonio Rendina
  • Patent number: 6386851
    Abstract: A multi-stage unit for processing a web packaging material in a machine for packaging food products, including a first processing station, a second processing station and a system for indexing the web packaging material comprising a first feeding device for step-feeding the web packaging material through the first processing station, a second feeding device for step-feeding the web packaging material through the second processing station, and a control unit controlling the first feeding device in response to a sensor detecting a first index code preprinted on the web packaging material, and the second feeding device in response to a second sensor detecting a second index code made on the web packaging material at said first processing station.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: May 14, 2002
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventor: Per Gustafsson
  • Patent number: 6374088
    Abstract: Arrangement in connection with an at least partly transparent pivotable protective hatch or flip for a mobile telephone apparatus. The flip is arranged to physically cover at least part of a keypad on the apparatus for preventing inadvertent keypad commands. The flip includes devices at its rear side, i.e. the side that in a closed state thereof is located closest to the keypad, that permit a protected attachment or arrangement of personal customization, such as paintings, sticky or nonsticky labels or cards thereat. The customization will thereby also be visible from the outside of the flip when the flip is in its closed state, due to the at least partial transparency of the flip.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: April 16, 2002
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Per Gustafsson
  • Publication number: 20020028270
    Abstract: An apparatus and method for moulding opening devices (16) onto a packaging material sheet (4) at respective holes (32) provided in the sheet. The apparatus includes first and second mould tools (20, 22) arrangeable in a closed position so as to be in contact with opposite sides (24, 26) of the sheet and in an open position so as to be positioned distally from the sheet. In the closed positions a mould cavity (28) is formed between the first and second mould tools for accommodating a hole edge (30) in the sheet The apparatus further includes an injection passage (36) for injecting heated thermoplastics material into the mould cavity, which injection passage extends in one of the mould tools such that the thermoplastics material is injected directly into the mould cavity at an injection point (38) of the mould cavity which is located distally from the hole edge, for providing effective formation of the opening device on the sheet.
    Type: Application
    Filed: August 10, 2001
    Publication date: March 7, 2002
    Inventors: Per Gustafsson, Antonio Rendina
  • Patent number: 6351924
    Abstract: A method is described for sterilizing, filling and closing packaging containers open on one side, in which the packaging container is exposed to a sterilizing agent during a clock-controlled transportation in a processing line through different processing stations, which is then removed with sterile hot air. Then, the packaging container is filled with sterile fluid and with a sterile closure.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: March 5, 2002
    Assignee: Tetra-Laval Holdings & Finance, S.A.
    Inventors: Per Gustafsson, Paolo Fontanazzi
  • Patent number: 6303066
    Abstract: An apparatus and method for molding opening devices onto a packaging material sheet at respective holes provided in the sheet. The apparatus includes first and second mold tools arrangeable in a closed position so as to be in contact with opposite sides of the sheet and in an open position so as to be positioned distally from the sheet. In the closed positions a mold cavity is formed between the first and second mold tools for accommodating a hole edge in the sheet. The apparatus further includes an injection passage for injecting heated thermoplastics material into the mold cavity, which injection passage extends in one of the mold tools such that the thermoplastics material is injected directly into the mold cavity at an injection point of the mold cavity which is located distally from the hole edge, for providing effective formation of the opening device on the sheet.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: October 16, 2001
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Per Gustafsson, Antonio Rendina
  • Patent number: 6085496
    Abstract: A packaging unit (1) for continuously producing aseptic sealed packages (2), containing a pourable food product, from a tube (14) of packaging material filled with the food product and fed along a vertical supply path (A); the unit (1) has a first and second chain conveyor (10, 11) respectively having a number of jaws (12) and a number of counter-jaws (13), which interact with the tube (14) to grip and heat-seal the tube at successive cross sections and so define a strip (25) of packages (2) connected to one another by respective transverse sealing bands (26); and the unit (1) also has a first and a second cutting member (54, 55) located beneath the conveyors (10, 11) and symmetrically on opposite sides of the supply path (A), rotating synchronously and in opposite directions about respective axes of rotation (G, H) crosswise to the supply path (A), and cooperating with the strip (25) of packages (2) to cut the strip (25) along the sealing bands (26) and draw the packages (2) away from the chain conveyors (10
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: July 11, 2000
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Paolo Fontanazzi, Felix Dunge, Per Gustafsson
  • Patent number: 6085495
    Abstract: A packaging unit (1) for continuously producing aseptic sealed packages (2), containing a pourable food product, from a tube (14) of packaging material filled with the food product; the unit (1) has a first and second chain conveyor (10, 11) respectively having a number of jaws (12) and a number of counter-jaws (13), which interact with and grip the tube (14) to heat-seal the tube at successive cross sections by means of induction heating elements (29) on the jaws (12); and each counter-jaw (13) has a push bar (35) fitted to a main body (20) of the counter-jaw via the interposition of springs (75) defining the gripping pressure exerted on the packaging material.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: July 11, 2000
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Paolo Fontanazzi, Lennart Friberg, Per Gustafsson
  • Patent number: 6035614
    Abstract: The improved filling pipe (1) is for use in liquid food packaging machines of the type wherein a longitudinally-sealed continuous tubular container (2) is formed from a web (3) of packaging material, and members successively clamp the tube at regularly spaced intervals for forming and transversely sealing packages filled with product. The filling pipe (1) is locatable axially of the continuous tubular container and has a rigid damper member (4) affixed to and surrounding a portion of the filling pipe (1). The rigid damper member (4) is locatable at a position which is radially spaced from the inner wall (2a) of a continuous tubular container (2) and entraps an air pocket (5) surrounding a portion of the filling pipe (1) for dampening motion of liquid product (20) relative to the filling pipe (1) in a packaging material tube (1) during operation of a liquid food packaging machine.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: March 14, 2000
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Per Gustafsson, Paolo Fontanazzi
  • Patent number: 6035604
    Abstract: A packaging unit (1) for continuously producing aseptic sealed packages (2), containing a pourable food product, from a tube (14) of packaging material filled with the food product; the unit (1) has a first and second chain conveyor (10, 11) respectively having a number of first and second jaws (12, 13) which interact with and grip the tube (14) at respective equally spaced cross sections (88) to perform, at the cross sections (88), respective sealing operations on the tube (14); and the unit (1) also has a monitoring device (91) for monitoring the sealing operations, and in turn having at least one fixed sensor (92; 93) cooperating with each second jaw (13) to generate at least one monitoring signal (S1, S2; S3, S4) related to an operating value (Vo) of a quantity associated with the second jaw (13), and a comparing circuit (99) for comparing the operating value (Vo) with at least one predetermined reference value (Vf) of the aforementioned quantity, and for generating a fault signal (S5) indicating malfunct
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: March 14, 2000
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventor: Per Gustafsson
  • Patent number: 5715897
    Abstract: An in-hole rock drilling machine has a hydraulic impact motor within a housing. The hydraulic impact motor has a spool valve contained within a valve housing. The spool valve has two operating positions to alternately pressurize and depressurize a drive chamber to reciprocate a hammer. The spool valve has a continuously pressurized third control surface that biases the spool valve towards a second operating position, a first control surface that acts opposite the third control surface to move the spool valve to a first operating position, and a second control surface that acts with the third control surface to return the spool valve to the second operating position. The valve housing guides the rear portion of the hammer, and a guide bushing guides the front portion of the hammer. The guide bushing, valve housing, and a distance sleeve are clamped against a shoulder of the housing.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: February 10, 1998
    Assignee: G-Drill AB
    Inventor: Per Gustafsson