Patents by Inventor Lars Carlsson

Lars Carlsson 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: 5800553
    Abstract: A hip joint prosthesis to be permanently anchored in a patient's hip is disclosed. The prosthesis comprises an attachment part for a ball unit designed to be anchored in the neck of a human femur. The attachment part comprises a primary fixture which may be an elongate anchoring element which is intended to be inserted into a channel extending through the femoral collum. The prosthesis also includes a secondary fixture for carrying a ball intended to be attached to the collum after removal of the head of the collum. The primary fixture and the secondary fixture are connected to each other. The prosthesis is preferably designed so that the length of the primary fixture terminates close to the head of the collum. The secondary fixture preferably comprises a plug-like part which is intended to be inserted in a cylindrical countersunk recess that is cut into the cancellous bone of the collum and which extends to the cortical bone in at least three locations.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: September 1, 1998
    Assignee: Aktiebolaget Astra
    Inventors: Bjorn Albrektsson, Magnus Jacobsson, Lars Carlsson, Tord Rostlund, Stig Wennberg
  • Patent number: 5741262
    Abstract: The invention relates to a hip joint prosthesis comprising an attachment part for a ball unit (18) being designed to be anchored in the neck of a human femur (collum femoris), said attachment part, which is intended to be inserted into a channel (5, 14) extending through the femoral collum, being provided with parts for carrying a ball or caput (18) intended to be attached to the collum after removal of the head of the collum. The attachment part also comprises a fixture part comprising two main parts, a first part (1) which is to extend through a bore-hole (5) from the collum femoris towards the outer side of the femur and a second part (2) intended to fit into a cylindrical cavity cut into the cancellous bone of the collum.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 21, 1998
    Assignee: Astra Aktiebolag
    Inventors: Bjorn Albrektsson, Magnus Jacobsson, Lars Carlsson, Tord Rostlund, Stig Wennberg
  • Cup
    Patent number: 5702473
    Abstract: The invention relates to a cup-shaped member for a hip joint prosthesis, for implantation into a cavity in the bone tissue in the acetabulum, comprising an acetabular cup (1) made of metal a ceramic material or any other suitable material, preferably of titanium, the outside of said cup being rotationally symmetrical around a central axis of symmetry. The outer side of the cup (1), that is the side which is to face the bone tissue, is provided with at least one circumferential bead (5) close to the edge of the cup (1), said bead (5) having a barb-like shape in section and consequently allowing the cup (1) to be pushed into said cavity but counter-acting the removal of said cup (1) from said cavity, said outer side including said bead(s) (5) being provided with a rough structure serving as a file when said cup (1) is moved or rotated in said cavity.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: December 30, 1997
    Assignee: Astra Aktiebolag
    Inventors: Bjorn Albrektsson, Lars Carlsson, Magnus Jacobsson, Tord Rostlund, Stig Wennberg
  • Patent number: 5495706
    Abstract: The disclosure relates to a method of providing a liquid package (2) with an opening arrangement (1) and to the opening arrangement (1) proper. A hole (3) is punched out in the material (15) of a package (2) of the type which is produced from a material web (15) or a material sheet, the hole being covered by a thin strip (4). Thereafter, the package (2) is filled and formed into its final shape. A plastic device (6)is secured on the finished package (2) so that it surrounds the strip (4) without covering it. The plastic device (6) consists of a pouring element (7) with an angled front edge (10) and a sealing element (8) with a locking angle (13). A hole is provided in the pouring element (7) wherein the strip (4) is visible in its entirety. Before distribution of the package (2)the sealing element (8)is moved over the pouring element (7) so that these enter into engagement with one another and the locking angle (13) is locked against the front edge (10) of the pouring element (7).
    Type: Grant
    Filed: August 2, 1994
    Date of Patent: March 5, 1996
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Bengt Bjo/ rck, Lars Carlsson
  • Patent number: 5364019
    Abstract: The disclosure relates to a method of providing a liquid package (2) with an opening arrangement (1) and to the opening arrangement (1) proper. A hole (3) is punched out in the material (15) of a package (2) of the type which is produced from a material web (15) or a material sheet, the hole being covered by a thin strip (4). Thereafter, the package (2) is filled and formed into its final shape. A plastic device (6) is secured on the finished package (2) so that it surrounds the strip (4) without covering it. The plastic device (6) consists of a pouring element (7) with an angled front edge (10) and a sealing element (8) with a locking angle (13). A hole is provided in the pouring element (7) wherein the strip (4) is visible in its entirety.Before distribution of the package (2) the sealing element (8) is moved over the pouring element (7) so that these enter into engagement with one another and the locking angle (13) is locked against the front edge (10) of the pouring element (7).
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: November 15, 1994
    Assignee: Tetra Laval Holdings & Finance SA
    Inventors: Bengt Bjorck, Lars Carlsson
  • Patent number: 5162066
    Abstract: A method for manufacturing a laminated strip having a gas barrier material laminated in a liquid-tight manner between two external films includes the steps of forming surface irregularities in a first film, laminating a web gas barrier material to the first film, transversely cutting the gas barrier material and applying a second film over the gas barrier material. The apparatus for manufacturing the laminated strip includes a pair of cooperating rolls between which the first film is fed for forming irregularities in the first film. Two other cooperating rolls are provided for cutting the gas barrier member after it has been laminated to the first film. Two additional cooperating rolls are also provided for laminating the second film to the gas barrier material and the first film.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: November 10, 1992
    Assignee: AB Profor
    Inventors: Kjell Martensson, Lars Carlsson
  • Patent number: 4819839
    Abstract: An opening arrangement for packing containers comprising a prepunched opening which is covered by a tear-off cover strip and a pouring rim element positioned between a wall of the packing container and the cover strip. In one of the embodiments, the pouring rim strip has an edge portion which projected partially over the opening of the packing container and a liquid-tight layer is joined to both an inside surface of the packing container wall and the edge portion of the pouring rim strip, as well as to a portion of the cover strip positioned over the opening. The application of the pouring rim as well as the manufacture of the opening arrangement as a whole are facilitated by joining in advance the pouring rim in a detachable manner to the cover strip, so the cover strip and the pouring rim can be applied as a unit.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: April 11, 1989
    Assignee: Tetra Pak International AB
    Inventors: Lars Carlsson, Kjell Martensson, Hans-Georg Melle
  • Patent number: 4801078
    Abstract: An arrangement on packing containers of flexible packing material, this arrangement making possible a tight closing and simple opening of the top part of the packing container. In, for example, a gable-top package (1) the arrangement comprises a sealing film (8) projecting outside the top edge of the packing container material, which after conventional shaping of the top part of the packing container is sealed in a sealing zone (9) and is provided with a projecting tearing strip (11). The film (8) is a laminate sealable to the packing material with a suitable barrier layer, e.g. Al-foil, and, owing to its small thickness, can be simply sealed in a gas-tight manner to itself as well as to the inside of the packing material.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: January 31, 1989
    Assignee: AB Tetra Pak
    Inventor: Lars Carlsson
  • Patent number: 4787881
    Abstract: An arrangement for the raising and transferring flattened tubular packing container blanks (2) from a magazine (3) to a conveyor arrangement comprises suction elements (18a and 18b) arranged on arms (15) movable in a curved path away from each other. The placing of the elements is such that the suction elements in a certain position (receiving position) of the arms are directed towards each other so as to allow engagement with, and attachment to, two opposite sides of a flat blank.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: November 29, 1988
    Assignee: AB Tetra Pak
    Inventors: Roland Andersson, Lars Carlsson, Anders Sjostrom
  • Patent number: 4759171
    Abstract: An arrangement for the retaining of container blanks (1) in a predetermined correct position on mandrels on a packing machine of the type which manufactures filled and closed packing containers from tubular container blanks and which comprises a stepwise rotatable mandrel wheel which is the bearer of mandrels distributed around the mandrel wheel which are intended to move container blanks applied to the mandrels in correct position between successive processing stations so as to achieve a bottom closure of the blanks. The arrangement comprises clamping elements pressed against the mandrels in the form, for example, of a lever which is adapted to be pivotable in a bracket at one lateral surface of the mandrel. The mandrel includes an upper clamping arm pressed against the mandrel and a lower maneuvering arm rigidly connected with the clamping arm as well as a spring element arranged at the top of the clamping arm (14).
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: July 26, 1988
    Assignee: AB Tetra Pak
    Inventors: Vilnis Bruveris, Lars Carlsson
  • Patent number: 4595116
    Abstract: An opening arrangement on packing containers is provided with thermoplastic layers, which in general are present on both sides of packing laminate and extend past a cut edge and are sealed in a liquid-tight manner to each other. This can be achieved simplest if the hole-punching of the carrier layer of the material is done prior to the application of the thermoplastic layers.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: June 17, 1986
    Assignee: Tetra Pak International AB
    Inventor: Lars Carlsson
  • Patent number: 4401250
    Abstract: In the intermittent forward feeding of a material web provided with transverse crease lines and simultaneous punching of holes into the material web in a definite relation to the crease line pattern, it is important to ensure that any faults in the length of the forward feed, do not accumulate during working over longer periods. Such faults, which occur due to unavoidable inaccuracies would lead successively to ever increasing faultiness in the placing of the holes. A method and an arrangement adapted to avoid the accumulation of such faults are provided.In the method the material web during each forward feeding is advanced a distance which exceeds the correct distance between two transverse lines by the fault margin. Subsequently, before the next forward feeding, the web is restored to a correct position, not affected by any faults in the distance between the crease lines.
    Type: Grant
    Filed: February 3, 1982
    Date of Patent: August 30, 1983
    Assignee: Tetra Pak International AB
    Inventor: Lars Carlsson
  • Patent number: 4351461
    Abstract: A rotary driver feeds a web containing transverse crease lines. The driver contains circumferentially spaced edges which drivingly engage the crease lines. When the crease lines are spaced farther apart than the edges, that part of the web disposed between those edges is deflected inwardly, as by a vacuum, to bring the crease lines into engagement with the edges.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: September 28, 1982
    Assignee: Tetra Pak International AB
    Inventor: Lars Carlsson
  • Patent number: 4078715
    Abstract: A packing container formed from a blank of thermo-plastic coated paper or cardboard erected into a rectangular body and provided with a top closure established by a bellows folding technique which terminates in a folded-down fin that is held in place against the adjacent container wall.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: March 14, 1978
    Assignee: AB Ziristor
    Inventors: Goran Larsson, Lars Carlsson
  • Patent number: 4019563
    Abstract: Apparatus for batching a metal melt such as steel from a pressure tapping furnace in which a level measuring device is provided for measuring the melt level in the tapping spout and using that level to calculate a signal for terminating the batching which is dependent on the integral of melt flow, and the rate of change of melt flow so as to take in to account the double draining which occurs after the termination of batching is initiated.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: April 26, 1977
    Assignee: ASEA Aktiebolag
    Inventors: Kjell Bergman, Lars Carlsson