Patents by Inventor Kjell M. Jakobsen

Kjell M. Jakobsen 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: 4467929
    Abstract: A container (21), and a method and apparatus for producing the container from a tubular blank of polyethylene terephthalate or similar material, according to which a polyethylene terephthalate blank is stretched at least about 3-fold to produce a preform (20). In an axial section through the preform, the contour length substantially corresponds to the contour length in an axial section through the final container. The preform (20) is heated to a temperature above the glass transition temperature (TG) and is converted to the container (21) in a blow mould (12). In doing so, the contour length of the material is maintained through successive reduction of the axial length of the body (23) which the preform constitutes during the conversion to the container. In order to achieve this, the base portion of the blow mould (11) is moved towards the orifice (22) of the final container.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: August 28, 1984
    Assignee: PLM A.B.
    Inventors: Kjell M. Jakobsen, Claes T. Nilsson
  • Patent number: 4468187
    Abstract: A tubular article having a peripheral groove is formed by providing the groove in the wall of a tubular blank made of thermoplastic material such as polyethylene terephthalate by applying simultaneously a pressure against the wall of the blank and axial stretching forces. In the bottom of the groove the material is drawn to yielding and the blank is simultaneously elongated.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: August 28, 1984
    Assignee: PLM A.B.
    Inventors: Claes T. Nilsson, Kjell M. Jakobsen, Lars G. Larsen
  • Patent number: 4464106
    Abstract: Apparatus for producing a tubular pre-moulding of a thermoplastic material, suitable for subsequent blow-moulding to form a container comprising a mold in which a future mouth portion and a portion of adjacent neck section of a tube are moulded to form a pre-moulding, preferably from two mutually joined blank parts, by an axial stretch operation and a blow-moulding operation, the parts in the transition between the mouth portions being severed by a cutting device in order to form two separate blank parts. A tubular pre-moulding is produced after closing one end of the particular blank part and, if necessary, reworking in order to obtain the requisite closing face at the other end.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: August 7, 1984
    Assignee: PLM Aktiebolag
    Inventors: Kjell M. Jakobsen, Claes T. Nilsson
  • Patent number: 4462950
    Abstract: A tubular article having a peripheral groove is formed by providing the groove in the wall of a tubular blank made of thermoplastic material such as polyethylene terrephthlate groove by applying simultaneously a pressure against the wall of the blank and axial stretching forces. In the bottom of the groove the material is drawn to yielding and the blank is simultaneously elongated.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: July 31, 1984
    Assignee: PLM AB
    Inventors: Claes T. Nilsson, Kjell M. Jakobsen, Lars G. Larson
  • Patent number: 4427122
    Abstract: A container for liquids and other products comprising at least two layers of plastic material formed from a composite parison which, after heating is expanded by internal pressure into the shape of the finished container. The plastic material of the inner layer of the parison contains aluminum powder and provides protection against admission of light and comparable radiation to the material within the container. The aluminum powder also serves to heat the parison before blowing by reflecting applied shortwave radiation into the plastic material of the parison.
    Type: Grant
    Filed: January 10, 1980
    Date of Patent: January 24, 1984
    Assignee: Platmanufaktur A.B.
    Inventor: Kjell M. Jakobsen
  • Patent number: 4426416
    Abstract: An article of thermoplastic material adapted for being molded into a container comprising a tubular neck portion including annular protuberances of hollow ring-shaped profile, and a tubular shoulder portion continuing from the neck portion. The material of the wall of the neck portion is substantially monoaxially oriented and the annular protuberances are circumferentially expanded from the wall without axial strain of the monoaxially oriented material of the wall whereby the material in the neck portion is of substantially uniform thickness and monoaxially oriented therethroughout including the annular protuberances.
    Type: Grant
    Filed: February 15, 1983
    Date of Patent: January 17, 1984
    Assignee: PLM Aktiebolag
    Inventors: Kjell M. Jakobsen, Clacs T. Nilsson, Lars G. Larsson
  • Patent number: 4416927
    Abstract: A tubular article (19) having a peripheral groove (12) is formed by providing the groove in the wall of a tubular blank (10) made of thermoplastic material such as polyethylene terephthalate by applying simultaneously a pressure against the wall of the blank and axial stretching forces. In the bottom of the groove (12) the material (15) is drawn to yielding and the blank is simultaneously elongated.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: November 22, 1983
    Assignee: PLM AB
    Inventors: Claes T. Nilsson, Kjell M. Jakobsen, Las G. Larson
  • Patent number: 4409176
    Abstract: An article (11) of thermoplastic material is moulded from a parison (10) in which certain parts (17,16) of the parison are re-formed while other parts (13,12,20) retain their shape. A difference in pressure is applied to the wall of the parison during the re-forming process. Material in the parison is also moved in the direction of those parts of the parison which are to be re-formed, whereby attenuation of the material may be avoided entirely, if so desired, also in those parts which are to be re-formed. The invention enables the parison for a bottle to be re-formed to an extent which is small by comparison with the thickness of the material, for example the so-called "neck support" ring and the so-called "pilfer proof" ring, starting with a tube of oriented material. In a device for the application of the invention the elements (22,21,25) are in contact with the parts (13,12,20) of the parison.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: October 11, 1983
    Assignee: PLM Aktiebolag
    Inventors: Kjell M. Jakobsen, Claes T. Nilsson, Lars G. Larsson
  • Patent number: 4405546
    Abstract: An object is produced from a tubular blank (10,15,17) of thermoplastic material of polyester or polyamide, preferably of polyethylene terephthalate by reducing the thickness of amorphous material in one or several areas of the blank by means of one or several consecutive re-shaping operations. A mechanical shaping device (23,29,71,81) moves a transitional zone (13,14,113) situated between thicker and thinner material along the blank and simultaneously elongates the blank in the moving direction of the transitional zone while reducing the thickness. After the last re-shaping operation the thinner material preferably has an oriented state. During the re-shaping operation the temperature of the material in the transitional zone (13,14,113) is controlled at a level which, immediately before the re-shaping operation, is within or close to the range of the glass transition temperature (TG).
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: September 20, 1983
    Assignee: PLM AB
    Inventors: Kjell M. Jakobsen, Claes T. Nilsson
  • Patent number: 4381279
    Abstract: A process for the manufacture of articles from a thermoplastic of polyester or polyamide type, preferably of polyethylene terephthalate, the element consisting of an edge part which surrounds a body in an arrangement in which the latter is sunk relative to the edge part. The element is formed from a blank of mainly amorphous material or from a material having a crystallinity of less than 10%. The blank consists, for example, of a flat plate, a blank shell or the like. The body or parts thereof are shaped by stretching the blank until that material flows which is located within the material sections of the blank, which form the edge part in the element, the material stretched up to flowing in the body assuming a crystallinity of between 10% and 25%, while the crystallinity in the material in the edge part and in the unstretched parts retains its original value of less than 10%. At least the body of the element is expanded against warm mould walls until the final shape of the particular article is obtained.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: April 26, 1983
    Assignee: PLM Aktiebolag
    Inventors: Kjell M. Jakobsen, Claes T. Nilsson
  • Patent number: 4380525
    Abstract: The invention relates to a tubular pre-moulding of a thermoplastic, suitable for subsequent blow-moulding shaping to give containers, and to a process and equipment for producing such pre-moulding. In a tube, future mouth portions and portions of adjacent neck sections are moulded to pre-mouldings, preferably from two mutually joined blank parts, by an axial stretch process and a blow-moulding process, the parts in the transition between the mouth portions being severed in order to form two separate blank parts. A tubular pre-moulding is produced after closing one end of the particular blank part and, if necessary, reworking in order to obtain the requisite closing face at the other end.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: April 19, 1983
    Assignee: PLM Aktiebolag
    Inventors: Kjell M. Jakobsen, Claes T. Nilsson
  • Patent number: 4374878
    Abstract: A tubular premoulding of a thermoplastic, suitable for subsequent shaping to produce containers by a rolling process. The material in a part of a tube is axially oriented as a result of reducing the wall thickness by applying an external pressure which causes the material to flow. The oriented material is moulded by a blow-moulding process into future mouth parts and parts of adjacent neck sections, preferably from two blank parts, joined to one another, of pre-mouldings, the blank parts in the transition between the two mouth parts being severed in order to form two separate blank parts, so that, after closing one end and, if necessary, reworking in order to obtain the requisite closing faces at the other end, the two blank parts each form a tubular pre-moulding.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: February 22, 1983
    Assignee: PLM Aktiebolag
    Inventors: Kjell M. Jakobsen, Claes T. Nilsson
  • Patent number: 4374166
    Abstract: The invention relates to an element of a thermoplastic of the polyester or polyamide type, and preferably of polyethylene terephthalate, the element consisting of an edge part which surrounds a body in an arrangement in which the latter is sunk relative to the edge part. The element is formed from a blank of mainly amorphous material or from a material having a crystallinity of less than 10%, the blank being, for example, a flat plate, a blank shell or the like. The body or parts thereof are shaped by stretching the blank until that material which is located within the material sections of the blank flows to from the edge part in the element, the material stretched to flowing in the body assuming a crystallinity of between 10 and 25%, while the crystallinity in the material in the edge part and in the unstretched parts retaining its original value of less than 10%. There is also disclosed a process and equipment for manufacturing the element.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: February 15, 1983
    Assignee: PLM Aktiebolag
    Inventors: Kjell M. Jakobsen, Claes T. Nilsson
  • Patent number: 4372908
    Abstract: A process for the manufacture of articles from a thermoplastic of polyester or polyamide type, preferably of polyethylene terephthalate, the articles being manufactured from elements which consist of an edge part which surrounds a body in an arrangement in which the latter is sunk relative to the edge part. The element is formed from a blank of mainly amorphous material or from a material having a crystallinity of less than 10%. The blank consists, for example, of a flat plate, a blank shell or the like. The body or parts thereof are shaped by stretching the blank until that material flows which is located within the material sections of the blank, which form the edge part in the element, the material stretched up to flowing in the body assuming a crystallinity of between 10 and 25%, while the crystallinity in the material in the edge part and in the unstretched parts retains its original value of less than 10%.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: February 8, 1983
    Assignee: PLM Aktiebolag
    Inventors: Kjell M. Jakobsen, Claes T. Nilsson
  • Patent number: 4359165
    Abstract: A reinforced container of thermoplastic material in which a blank is pre-heated from an amorphous structure and finished in a subsequent blowing process with biaxial stretching, wherein the container is provided simultaneously with internal reinforcing ribs.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: November 16, 1982
    Assignee: PLM Aktiebolag
    Inventor: Kjell M. Jakobsen
  • Patent number: 4333904
    Abstract: A process for forming a mouthpiece on a preform formed from a tubular blank consisting of thermoplastic material, which is intended for the production of a container, e.g. by blow molding, whereby connecting means, such as a thread, which is adapted to a suitable form of closure of the container is formed on the outside of the mouthpiece. The process comprises inserting the blank between an outer mold section with a mold portion for the attachment surface of the connecting means and an inner mold section, whereupon a driven relative axial movement of the two mold sections relative to each other forces the material of the blank, in tightly enclosed manner, radially outwards into the mold portion for the attachment surface, and an axial head cup is provided.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: June 8, 1982
    Assignee: PLM AB
    Inventor: Kjell M. Jakobsen
  • Patent number: 4320083
    Abstract: A process of producing a reinforced container of thermoplastic material in which a blank is pre-heated from an amorphous structure and finished in a subsequent blowing process with biaxial stretching, wherein it is provided simultaneously with internal reinforcing ribs.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: March 16, 1982
    Assignee: Platmanufaktur AB
    Inventor: Kjell M. Jakobsen
  • Patent number: 4293359
    Abstract: A container assembly comprising a container of plastic material adapted for receiving a liquid and including a bottom of convex shape in the central portion of which the material is highly oriented. A stabilizing foot supports the container and for this purposes is welded to the container in the central portion of the bottom thereof whereat the material is highly oriented. The foot includes an annular projection extending downwardly from the portion welded to the container. The projection is hollow and forms an annular support foot including a rim which extends upwardly from the projection into smooth peripheral sliding engagement with the bottom of the container. The support foot is welded to the container while the middle portion of the projection is held against the middle portion of the bottom of the container.
    Type: Grant
    Filed: July 11, 1979
    Date of Patent: October 6, 1981
    Assignee: Aktiebolaget Platmanufaktur AB
    Inventor: Kjell M. Jakobsen
  • Patent number: 4196039
    Abstract: A container assembly comprising a container of plastic material adapted for receiving a liquid and including a bottom of convex shape in the central portion of which the material is highly oriented. A stabilizing foot supports the container and for this purpose is welded to the container in the central portion of the bottom thereof whereat the material is highly oriented. The foot includes an annular projection extending downwardly from the portion welded to the container. The projection is hollow and forms an annular support foot including a rim which extends upwardly from the projection into smooth peripheral sliding engagement with the bottom of the container. The support foot is welded to the container while the middle portion of the projection is held against the middle portion of the bottom of the container.
    Type: Grant
    Filed: July 27, 1978
    Date of Patent: April 1, 1980
    Assignee: Aktiebolaget Platmanufaktur AB
    Inventor: Kjell M. Jakobsen