Patents by Inventor Topi Laiho

Topi Laiho 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: 8672579
    Abstract: Expansion joint system of a concrete slab arrangement, comprising an expansion joint reinforcement to be arranged between a first and a second concrete slab (1, 2), the expansion joint reinforcement comprising at least two local dowels (3)transferring loads perpendicular to the slab plane. The dowels comprise a dowel plate (4) and a casing part (5). The dowel plate (4) and the casing part (5) are attached to the concrete slabs on different sides of the joint. The casing part (5) prevents the dowel plate from adhering to the concrete slab and allows the dowel plate (4) to move inside the casing part and thus allows the movements of the slabs (1, 2) in the horizontal direction. The dowels (3) are installed alternately relative to the joint so that the casing parts (5) of the adjacent dowels (3) are always installed on different sides of the joint.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: March 18, 2014
    Assignee: Peikko Group Oy
    Inventors: Topi Laiho, Trent Davis
  • Patent number: 8539726
    Abstract: An expansion joint system of a concrete slab arrangement, comprising an expansion joint reinforcement to be arranged between a first and a second concrete slab, the expansion joint reinforcement comprising at least one lo-cal or continuous dowel which is arranged to transfer loads perpendicular to the slab plane. The expansion joint reinforcement comprises an additional reinforcement comprising at least one clenching pin and to be arranged in the vicinity of the dowel in concrete, the additional reinforcement being arranged to adhere to the concrete above and below the dowel by means of a widening forming the clench point.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: September 24, 2013
    Assignee: Peikko Group Oy
    Inventors: Topi Laiho, Trent W. Davis
  • Patent number: 8516761
    Abstract: The invention relates to an expansion joint system of a concrete slab arrangement, comprising an expansion joint reinforcement to be arranged between a first and a second concrete slab, the expansion joint reinforcement comprising at least one local or continuous dowel arranged to transfer loads which are perpendicular to the slab plane. A shear reinforcement or a location for attaching the shear reinforcement has been arranged in advance in the expansion joint reinforcement.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: August 27, 2013
    Assignee: Peikko Group Oy
    Inventors: Topi Laiho, Trent Davis
  • Publication number: 20100325996
    Abstract: An expansion joint system of a concrete slab arrangement, comprising an expansion joint reinforcement to be arranged between a first and a second concrete slab the expansion joint reinforcement comprising at least one lo-cal or continuous dowel which is arranged to transfer loads perpendicular to the slab plane. The expansion joint reinforcement comprises an additional reinforcement comprising at least one clenching pin and to be arranged in the vicinity of the dowel in concrete, the additional reinforcement being arranged to adhere to the concrete above and below the dowel by means of a widening forming the clench point.
    Type: Application
    Filed: January 20, 2009
    Publication date: December 30, 2010
    Applicant: PEIKKO GROUP OY
    Inventors: Topi Laiho, Trent Davis
  • Publication number: 20100325995
    Abstract: Expansion joint system of a concrete slab arrangement, comprising an expan-sion joint reinforcement to be arranged between a first and a second concrete slab (1, 2), the expansion joint reinforcement comprising at least two local dowels (3)transferring loads perpendicular to the slab plane. The dowels com-prise a dowel plate (4) and a casing part (5). The dowel plate (4) and the cas-ing part (5) are attached to the concrete slabs on different sides of the joint. The casing part (5) prevents the dowel plate from adhering to the concrete slab and allows the dowel plate (4) to move inside the casing part and thus allows the movements of the slabs (1, 2) in the horizontal direction. The dowels (3) are installed alternately relative to the joint so that the casing parts (5) of the adjacent dowels (3) are always installed on different sides of the joint.
    Type: Application
    Filed: January 20, 2009
    Publication date: December 30, 2010
    Applicant: Peikko Group OY
    Inventors: Topi Laiho, Trent Davis
  • Publication number: 20100281808
    Abstract: The invention relates to an expansion joint system of a concrete slab arrangement, comprising an expansion joint reinforcement to be arranged between a first and a second concrete slab, the expansion joint reinforcement comprising at least one local or continuous dowel arranged to transfer loads which are perpendicular to the slab plane. A shear reinforcement or a location for attaching the shear reinforcement has been arranged in advance in the expansion joint reinforcement.
    Type: Application
    Filed: January 20, 2009
    Publication date: November 11, 2010
    Applicant: PEIKKO GROUP OY
    Inventors: Topi Laiho, Trent Davis