Patents Assigned to Lannen Tehtaat OY
  • Patent number: 6080951
    Abstract: A method and device for improving the efficiency of mechanical transplanting, wherein seedling balls carrying no seedlings or undersize seedlings are automatically removed prior to the planting stage. Several seedling balls are simultaneously extracted from a common cultivation tray and deficient balls are detected and removed. The deficit caused by a removed seedling ball is compensated by momentarily increasing the rate of feeding balls from the tray. No separate replacement seedling supply is required.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: June 27, 2000
    Assignee: Lannen Tehtaat Oy
    Inventors: Bert Thijssen, Leo Lehto, Altti Keskilohko
  • Patent number: 6073564
    Abstract: A method and device for improving mechanical transplanting of balled seedlings involves detection of balls with deficient seedlings, such as those with no seedlings or undersized seedlings, with a sensor through an aperture in a compartment holding the ball. Deficient balls are allowed to exit from the compartment through a shutter, and replacement balls are provided from a seedling supply. The replacement seedling supply includes a cassette having one row of cells for seedlings and the cassette is advanced, as necessary, by a geared shaft engaging the side of the cassette. Alternatively, replacement seedlings are provided from a cultivating tray.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: June 13, 2000
    Assignee: Lannen Tehtaat Oy
    Inventor: Altti Keskilohko
  • Patent number: 4893571
    Abstract: This invention relates to an automatic method for planting balled seedlings grown in container trays. According to this invention, the balled seedling (7) is removed from the container by taking hold of it from the top with a fork-like gripping element (16) and transferring it into the ground. For this, a gripping prong (16) which remains in position at the gripping stage and into which the seedling is pushed is used. The seedlings can be planted without breakage or problems and in the correct position.
    Type: Grant
    Filed: July 26, 1988
    Date of Patent: January 16, 1990
    Assignee: Lannen Tehtaat Oy
    Inventors: Reijo Hakli, Leo Lehto, Esa Lehto
  • Patent number: 4706582
    Abstract: Planting device for plants, which comprises a frame tube (1), a stationary jaw (6) and a pivoting jaw (7) in contact with same, with a foot pedal (8), as well as a catch and discharge device (3), which is provided with a trigger lever (12) as well as with a spring (13). The trigger lever is in one of its extreme positions when the pivoting jaw is open, and in the other extreme position when the pivoting jaw is closed. The spring is fitted so as to lock the trigger lever--and thereby also the pivoting jaw--in any of the extreme positions.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: November 17, 1987
    Assignee: Lannen Tehtaat Oy
    Inventor: Altti K. Keskilohko
  • Patent number: 4666746
    Abstract: Method for the impregnation of water-repellent paper by using an ammonium salt of a substituted succinic acid amide as the moistening agent. The water-repellent properties of a paper impregnated in accordance with the method are restored after drying.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: May 19, 1987
    Assignee: Lannen Tehtaat Oy
    Inventor: Anders Lassus
  • Patent number: 4642014
    Abstract: Framing system in which plant pot sets (12) are shifted onto a pallet (5) provided with a bottom with holes by means of a roll conveyor (4) extending through the holes in the bottom of the pallet, and in which the pallets filled in this way are stacked.
    Type: Grant
    Filed: March 26, 1985
    Date of Patent: February 10, 1987
    Assignee: Lannen Tehtaat Oy
    Inventor: Kari Saarinen
  • Patent number: 4611428
    Abstract: Method and equipment for planting of band ball plants in which the plants are grown in a cassette consisting of a bottom part and an upper part (2). The bottom part comprises several parallel grooves. The upper part is made of paper coated with plastic, and having perforations (19) to produce a ball support network when tamped from above. The plants in a groove are separated by folds (17) of the upper part, which straighten when the bands are pulled after the incubation from the grooves.
    Type: Grant
    Filed: September 26, 1984
    Date of Patent: September 16, 1986
    Assignee: Lannen Tehtaat Oy
    Inventor: Marja H. Hakli
  • Patent number: 4610761
    Abstract: A paper material has been invented that contains cellulose substituted by means of N-methylol compounds. As N-methylol compounds may be used, e.g., reaction products of urea, glyoxal, and formaldehyde, methylolated melamines, and N-methylol-acrylamide copolymers. The paper is manufactured best by impregnating paper with an aqueous solution or dispersion of a N-methylol compound and by drying it at 130.degree. to 200.degree. C. in order to produce condensation. Papers in accordance with the invention have good properties of strength against decomposition and wet strength, which properties can be adjusted readily by varying the degree of substitution or cross-linking of the cellulose. The papers are particularly well suitable, e.g., for the manufacture of plant-growing pots and corrugated fibreboard.
    Type: Grant
    Filed: December 19, 1984
    Date of Patent: September 9, 1986
    Assignee: Lannen Tehtaat Oy
    Inventors: Dan Eklund, Jukka Erkkila, Matti Ingman, Anders Lassus, Kauko Peltonen, Kari Saarinen
  • Patent number: 4578899
    Abstract: Set of growing cells (1) for the growing of plants, the said set of growing cells (1) comprising several lines of pots parallel to each other. Each of the lines of pots adjoining each other has a common wall construction (3) partly decomposing during the growing of the plants, the said wall construction consisting of three material layers laminated together.The middle portion (5) of the wall construction (3) is composed of a plastic material, such as, e.g., polyethylene or polypropylene.On both sides of the middle portion (5) of the wall construction (3), there is a thin paper layer (6) decomposing in the ground during the growing of the plants. After the stage of growing of the plants, after decomposition of the paper layers (6), the adhesive strips (4), which do not adhere to the plastic layers, i.e. to the middle portions (5), remain as plugs between the middle portions (5).
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: April 1, 1986
    Assignee: Lannen Tehtaat Oy
    Inventors: Matti Katila, Jukka Erkkila
  • Patent number: 4530383
    Abstract: The present invention relates to a device for feeding a substrate into the cells of a set of growing cells placed underneath the device. The feeding device includes two horizontal feeding rolls parallel to each other. Each feeding roll includes a plurality of pin elements which project radially from the face of the rolls in an outward direction. The pins are placed in the normal planes of the axes of the feeding rolls in an alternating fashion with respect to the rolls. This arrangement allows the pins to interlock with each other in the vertical plane through which the substrate is fed. The substrate, by the effect of the circumferential velocity of the feeding rolls, is introduced into the cells so as to compact any material deposited earlier into the cells.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: July 23, 1985
    Assignee: Lannen Tehtaat Oy
    Inventors: Jouko Lehtinen, Kari Saarinen
  • Patent number: 4404917
    Abstract: Method and device for planting pot plants with a planting machine travelling on the ground so that a planting furrow is formed by means of a plough-share. The plants are fed into a planting device of the machine. The planting device grasps a plant, lowers the plant down towards the planting furrow, and lets the plant loose above the planting furrow. Thereupon, the plants having assumed a substantially vertical position in the planting furrow, the planting furrow is closed by a pair of pressing wheels. As the plant is detached from the planting device, the component of the speed of the planting device and of the plant, opposite to the direction of travel of the machine, in relation to the machine, is substantially higher than the speed of the machine in relation to the ground.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: September 20, 1983
    Assignee: Lannen Tehtaat Oy
    Inventor: Reijo S. Hakli
  • Patent number: 4231186
    Abstract: A group of enclosures for nursing and replanting plants is disclosed comprising several parallel rows of enclosures wherein each two adjoining rows of enclosures have a common wall construction. This wall permits the flow of nutrients and water through the wall and thus makes it possible to control and guide the growth of the roots.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: November 4, 1980
    Assignee: Lannen Tehtaat Oy
    Inventor: Mauno Ruuska
  • Patent number: 4106415
    Abstract: The invention is an improved mechanical planting machine capable of making a furrow in the ground and planting therein plants with root clods such as so-called pot-type plants. The apparatus comprises a plowshare for forming a furrow, feeding apparatus for feeding the plants into the furrow, compressing means such as pressure wheels for compacting the soil against the roots of the plant, and an operating device for supporting the plant in the selected planting position while the soil is being compacted. The operating device is the inventive feature. It comprises two parallel circulating endless elements located above the furrow with flexible wires attached at regular intervals. The device is located above the furrow so that the wires dangle down forming two parallel wire walls that penetrate the furrow and support the plant therebetween until the soil has been compacted.
    Type: Grant
    Filed: October 7, 1976
    Date of Patent: August 15, 1978
    Assignee: Lannen Tehtaat OY
    Inventor: Reijo Sakari Hakli
  • Patent number: D298924
    Type: Grant
    Filed: May 8, 1986
    Date of Patent: December 13, 1988
    Assignee: Lannen Tehtaat Oy
    Inventor: Kari Saarinen
  • Patent number: D322048
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: December 3, 1991
    Assignee: Lannen Tehtaat Oy
    Inventor: Kari Saarinen
  • Patent number: D324834
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: March 24, 1992
    Assignee: Lannen Tehtaat Oy
    Inventor: Kari Saarinen
  • Patent number: D325714
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: April 28, 1992
    Assignee: Lannen Tehtaat Oy
    Inventors: Anneli Karhiniemi, Altti Keskilohko
  • Patent number: D401530
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: November 24, 1998
    Assignee: Lannen Tehtaat Oy
    Inventor: Altti Keskilohko