Patents by Inventor John Haue Damkjær

John Haue Damkjær 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: 6758329
    Abstract: The invention provided a conveyor belt, which is special in that the belt in a direction perpendicular to the traveling direction of the belt is made from one single chain link, and that the transport top surface comprises a wide main portion and the top part of the eye projections which are flush with the main portion, such that the belt surface is substantially without apertures and/or openings and further that the hinge-like assembly arrangement is fully accessible only from the underside of the belt. By this inventive chain link is achieved that the narrow gaps between each assembled chain link in the prior art is not present such that from a hygienic point of view it becomes much easier to clean the entire conveyor belt satisfactory in that for each chain link, which usually constitutes 40-60 mm of the total length of the conveyor belt, which altogether, especially for deboning lines, might be 300-400 meter long, no gaps are present.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: July 6, 2004
    Assignee: uni-chains A/S
    Inventors: John Haue Damkjær, Poul Erik Damkjær
  • Patent number: 6216854
    Abstract: Side-flexing conveyor belt built up of a number of chain links which are joined together in a hinge-like manner by means of transverse rods (5, 6) through openings in the individual chain links. Use is made of chain links of at least two types, i.e. edge chain links (1, 2) with one-sided reinforcement (18), and module chain links (3, 4) between the edge chain links. The chain links of both types can be configured in various module breadths, and the individual links are staggered in relation to one another. Each link has a first row of eye parts (12) with mutual intervals between them in the transverse direction, and with elongated holes in line with one another for the engagement of a transverse rod, and a second row of eye parts (11) disposed midway between the first-mentioned eye parts and with holes in line with one another for the engagement of a second transverse rod, and the two sets of eye parts are held together by a transversely-extending bridge part.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: April 17, 2001
    Assignee: uni-chains A/S
    Inventors: Poul Erik Damkjær, John Haue Damkjær
  • Patent number: RE40248
    Abstract: The invention provided a conveyor belt, which is special in that the belt in a direction perpendicular to the traveling direction of the belt is made from one single chain link, and that the transport top surface comprises a wide main portion and the top part of the eye projections which are flush with the main portion, such that the belt surface is substantially without apertures and/or openings and further that the hinge-like assembly arrangement is fully accessible only from the underside of the belt. By this inventive chain link is achieved that the narrow gaps between each assembled chain link in the prior art is not present such that from a hygienic point of view it becomes much easier to clean the entire conveyor belt satisfactory in that for each chain link, which usually constitutes 40-60 mm of the total length of the conveyor belt, which altogether, especially for deboning lines, might be 300-400 meter long, no gaps are present.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: April 22, 2008
    Assignee: Uni-Chains A/S
    Inventors: John Haue Damkjaer, Poul Erik Damkjaer