Patents by Inventor Josef Krasser

Josef Krasser 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).

  • Process for manufacturing a Yankee cylinder
    Patent number: 9452498
    Abstract: The invention relates to a process for manufacturing a steel Yankee cylinder (1), where the Yankee cylinder (1) is welded together from individual pre- or finish-machined cylinder sections (8, 9, 10). In this case, the individual cylinder sections (8, 9, 10) are not welded together at the manufacturing location of the cylinder sections (8, 9, 10), but at an assembly location away from the manufacturing location, preferably on the works premises of the customer.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: September 27, 2016
    Assignee: Andritz AG
    Inventors: Josef Krasser, Markus Maier, Ludwig Kahsiovsky
  • Process for manufacturing a yankee cylinder
    Patent number: 9403243
    Abstract: The invention relates to a process for manufacturing a steel Yankee cylinder (1), where the Yankee cylinder (1) is welded together from individual pre- or finish-machined cylinder sections (8, 9, 10). The invention also relates to a Yankee cylinder (1) that is manufactured using the manufacturing process according to the invention.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: August 2, 2016
    Assignee: Andritz AG
    Inventors: Josef Krasser, Markus Maier, Ludwig Kahsiovsky
  • PROCESS FOR MANUFACTURING A YANKEE CYLINDER
    Publication number: 20140033789
    Abstract: The invention relates to a process for manufacturing a steel Yankee cylinder (1), where the Yankee cylinder (1) is welded together from individual pre- or finish-machined cylinder sections (8, 9, 10). The invention also relates to a Yankee cylinder (1) that is manufactured using the manufacturing process according to the invention.
    Type: Application
    Filed: March 19, 2012
    Publication date: February 6, 2014
    Applicant: ANDRITZ AG
    Inventors: Josef Krasser, Markus Maier, Ludwig Kahsiovsky
  • PROCESS FOR MANUFACTURING A YANKEE CYLINDER
    Publication number: 20140026418
    Abstract: The invention relates to a process for manufacturing a steel Yankee cylinder (1), where the Yankee cylinder (1) is welded together from individual pre- or finish-machined cylinder sections (8, 9, 10). In this case, the individual cylinder sections (8, 9, 10) are not welded together at the manufacturing location of the cylinder sections (8, 9, 10), but at an assembly location away from the manufacturing location, preferably on the works premises of the customer.
    Type: Application
    Filed: March 19, 2012
    Publication date: January 30, 2014
    Applicant: ANDRITZ AG
    Inventors: Josef Krasser, Markus Maier, Ludwig Kahsiovsky
  • Twin conical refiner with dual ribbon feeders
    Patent number: 5383608
    Abstract: Apparatus and method for the mechanical refining of high consistency lignocellulosic feed material in a frustroconical refining zone, by facilitating the backflow of steam generated in the refining zone through the upstream feed zone which, despite the backflow of steam, imparts outward force on the feed material sufficient for the material to enter the refining zone and pass therethrough, without blockage or flow interruption. This is accomplished by providing, immediately upstream of the frustroconical refining zone (46), a hybrid feed/grinding zone (104), which acts on the wood chips with relatively high refining intensity at low refining power, so as to reduce the size of the material and outwardly convey the material by centrifugal force into the frustroconical refining zone against the backflowing steam, but without generating steam in the hybrid zone.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: January 24, 1995
    Assignee: Andritz Sprout-Bauer, Inc.
    Inventors: Karl T. G. Dahiqvist, Franz Haider, Gregory R. Kohler, Josef Krasser, William F. Lahner, III, Alfred Lang, Wilhelm Mausser, Heinrich F. Munster, Josef Muser, Ronald L. Musselman, Walter Writzl