Patents Assigned to Kenco Engineering, Inc.
  • Patent number: 9103078
    Abstract: An improved screed plate having a top surface, a bottom surface, a curved leading edge and a trailing edge adapted for attaching to a screed of a paving machine is disclosed. The improved screed plate comprises a tapered groove extended from the curved leading edge towards the trailing edge along the top surface and terminated in a groove end. The tapered groove is arranged deepest at the curved leading edge and shallowest toward the trailing edge so as to provide flexibility to the screed plate while not reducing screed plate lifetime due to increased wear and tear. The increased screed plate flexibility facilitates crowning and other adjustments that require bending of the screed plate, and allow harder steels to be used than are used in conventional screed plates.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: August 11, 2015
    Assignee: Kenco Engineering, Inc.
    Inventor: David Lutz
  • Publication number: 20110123269
    Abstract: An improved screed plate having a top surface, a bottom surface, a curved leading edge and a trailing edge adapted for attaching to a screed of a paving machine is disclosed. The improved screed plate comprises a tapered groove extended from the curved leading edge towards the trailing edge along the top surface and terminated in a groove end. The tapered groove is arranged deepest at the curved leading edge and shallowest toward the trailing edge so as to provide flexibility to the screed plate while not reducing screed plate lifetime due to increased wear and tear. The increased screed plate flexibility facilitates crowning and other adjustments that require bending of the screed plate, and allow harder steels to be used than are used in conventional screed plates.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 26, 2011
    Applicant: KENCO ENGINEERING, INC.
    Inventor: David Lutz
  • Patent number: 4865487
    Abstract: A screed for an asphalt paver in which the bottom plate thereof is made of steel in the Brinell hardness range of 450-500 to engage road surfacing material. Stainless steel threaded studs are welded to the upper surface of the bottom plate for attachment of the screed to the asphalt paver.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: September 12, 1989
    Assignee: Kenco Engineering, Inc.
    Inventor: David L. Lutz
  • Patent number: 4307520
    Abstract: Bucket-type material lifters are adjustably mounted on the inner peripheral surface of a drier drum between pairs of spaced plates carried by the drum, so that the position at which each lifter starts to discharge material during rotation of the drum and the position at which it completes its discharge can be selectively changed.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: December 29, 1981
    Assignee: Kenco Engineering, Inc.
    Inventor: David L. Lutz
  • Patent number: 4304494
    Abstract: A slip-on shroud to protect the shank of a mixing paddle of an asphalt mixer. The shroud is disposed on the shank and is formed with a generally triangular cross-sectional area to protect the front of the shank while reducing the quantity of material used to form the shroud and is formed with a generally triangular opening to receive the shank. The shroud is also formed with flanges confronting the opening to retain the shroud on the shank while reducing the quantity of material required to hold the shroud on the shank.
    Type: Grant
    Filed: February 28, 1980
    Date of Patent: December 8, 1981
    Assignee: Kenco Engineering, Inc.
    Inventor: David L. Lutz