Patents Assigned to Hardi International A/S
  • Patent number: 7559569
    Abstract: The invention relates to trailer (1) for towing after a towing after a towing vehicle, said trailer (1) comprising a frame (3) configured for carrying a load and having a front end with a coupling (5) configured for connecting the trailer (1) to the towing vehicle and allowing that the trailer (1) and the towing vehicle are able to assume mutually angular positions during turning about a turning point O; and a rear end. The trailer also has a separate wheel frame (8) that is connected to the frame (3) by means (10) that allow a relative turning of the frame in relation to the wheel frame (8) during turning of the trailer about the turning point, said wheel frame (8) comprising oppositely arranged wheels (4) that support the trailer (1) during the towing and that are arranged at a distance from each other close to a respective longitudinally extending side of the frame (3); and actuator means (15) for producing said relative turning of the frame (3).
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: July 14, 2009
    Assignee: Hardi International A/S
    Inventor: Lars Nejsum
  • Patent number: 6478236
    Abstract: An agricultural sprayer for spraying a mixture of a carrier liquid and at least one active ingredient, and including a carrier liquid container, at least one active ingredient container for containing the active ingredient in concentrated form, a mixing chamber for mixing the carrier liquid with the active ingredient, at least one active ingredient feed line between the at least one active ingredient container and the mixing chamber and a carrier liquid feed line between the carrier liquid container and the mixing chamber, a boom structure having at least one nozzle connected with said mixing chamber for spraying the mixture of the active ingredient and the carrier liquid, and means for generating and discharging a flow of gas under pressure. The sprayer has connecting means that allow gas low communication between said means for generating and discharging a flow of gas under pressure and said at least one container for receiving an active ingredient.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: November 12, 2002
    Assignee: Hardi International A/S
    Inventors: Thomas Norman, Jørgen Bo Mørch Secher
  • Patent number: 6367712
    Abstract: The present invention relates to a boom structure for an agricultural implement (1), wherein a pivot link connects a boom section (20) with a frame (10), and actuator means (18) being capable of generating a desired pivoting of the boom section (20) about an axis (A).
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: April 9, 2002
    Assignee: Hardi International A/S
    Inventor: Mogens Larsen
  • Patent number: 6131821
    Abstract: An agricultural appliance, in particular a field sprayer, that includes a boom construction (1) with a central portion (20) which may, by means of a suspension device, be mounted on a support construction (40), such as a tool bar on a tractor or the like, which is located posteriorly of the boom construction (1). The suspension device includes a pivot (150) that allows for turning of the boom construction (1) about the axis of the pivot which extends substantially perpendicularly to the boom construction (1) and horizontally.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: October 17, 2000
    Assignee: Hardi International A/S
    Inventor: Lars Nejsum
  • Patent number: 5971295
    Abstract: An agricultural sprayer unit to be moved by a moving vehicle relative to crops to be sprayed with a chemical agent delivered from said agricultural spray unit includes: a frame connectable to said moving vehicle for connecting said agricultural sprayer unit to said moving vehicle for moving along with said moving vehicle, a tank supported by said frame for storing said chemical agent, a boom linked to and extending from said frame defining a specific orientation relative to said crops, a nozzle supported by and positioned along said boom and communicating with said tank for receiving said chemical agent from said tank for generating an atomized jet of said chemical agent to be expelled from said nozzle and sprayed onto said crops, and air-flow generating apparatus supported by said frame and extending along said boom for generating an air flow directed from said air-flow generating apparatus to said crops, said air flow generating apparatus being divided into a number of subsections positioned along said boom
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: October 26, 1999
    Assignee: Hardi International A/S
    Inventors: Soeren Hartvig Jensen, Henrik Engqvist
  • Patent number: 5199649
    Abstract: A spray nozzle assembly, especially for spraying liquid manure, has a nozzle body which can be inserted in and fastened to a pipe stud by means of a union suitable for dye coding so that the nozzle can be easily identified. The nozzle body is surrounded by a circumferential metal sealing disk pressed into the union with the rim of the disk cutting into the inner wall of the union during the pressing step.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: April 6, 1993
    Assignee: Hardi International A/S
    Inventor: Steen Tolboll
  • Patent number: 5168872
    Abstract: A boom, particularly a spreading boom for suspension on an outer frame (1) of an agricultural tool and of the type in which the suspension device comprises spring suspension and shock absorbing devices in the form of a trapezoidal suspension with two substantially parallel beams of which one is connected to the outer frame (1). According to the invention the upper beam of the trapezoidal suspension is linked, each of the links (6, 7) being pivotally connected to the outer frame (1) and springs (12) being arranged on both sides of the linkage (20, 21), but on the other side of the center of suspension (8, 9). The individual spring (12) is arranged between one of said links (6, 7) and a separate beam fastened to the outer frame (1).
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: December 8, 1992
    Assignee: Hardi International A/S
    Inventors: Knud Rasmussen, Steen Tolboll