Patents by Inventor Ralf Frankenberger

Ralf Frankenberger 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: 10245591
    Abstract: A bearing element suitable for supporting a grinding disk in a roller mill, comprising a plate-like or disk-shaped base element, an annular disk and a spacer element, wherein the annular disk is disposed substantially parallel to the base element and at a distance from the base element, and is connected at its bottom using an annular spacer element with the base element, and the annular disk has means on its upper side for receiving the axial bearing segments, whereby the spacer element is designed as an annular strip extending in the axial direction and has a plurality of spaced-apart arches in the circumferential direction, whose openings point towards the base element.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: April 2, 2019
    Assignee: GEBR. PFEIFFER SE
    Inventors: Dirk Hoffmann, Ralf Frankenberger, Karl-Heinz Schütte
  • Publication number: 20180272355
    Abstract: The invention relates to a material-bed roller mill comprising the following: two adjacently arranged rollers which are oriented in an axially parallel manner in a base state and rotate in opposite directions and between which a roller gap is formed; a foundation; two roller mountings, in each of which a roller is rotatably mounted, each roller mounting being secured to the foundation in a pivotal manner; and a clamping device which acts on the roller gap and which is arranged outside of the roller gap and connects the two roller mountings together. Each roller mounting has two rockers which are designed as separate components and each of which is arranged at an end of a roller and can be deflected independently of the other.
    Type: Application
    Filed: June 15, 2016
    Publication date: September 27, 2018
    Inventors: Dirk HOFFMANN, Ralf FRANKENBERGER, Karl-Heinz SCHÜTTE, Hardy LESSMEISTER, Lukas SCHMITT
  • Publication number: 20180099288
    Abstract: The present invention relates to a bearing element suitable for supporting a grinding disk in a roller mill, comprising a plate-like or disk-shaped base element, an annular disk and a spacer element, wherein the annular disk is disposed substantially parallel to the base element and at a distance from the base element, and is connected at its bottom using an annular spacer element with the base element, and the annular disk has means on its upper side for receiving the axial bearing segments, whereby the spacer element is designed as an annular strip extending in the axial direction and has a plurality of spaced-apart arches in the circumferential direction, whose openings point towards the base element.
    Type: Application
    Filed: October 11, 2017
    Publication date: April 12, 2018
    Inventors: Dirk HOFFMANN, Ralf FRANKENBERGER, Karl-Heinz SCHÜTTE
  • Publication number: 20090314866
    Abstract: A roller mill is provided that includes a housing, a grinding plate with a drive, and grinding rollers which roll down on the grinding plate, wherein rockers and rocker axes are provided for each grinding roller, as well as tensioning devices having hydraulic cylinders for pressing the grinding rollers onto the grinding plate. A swivel device having a swivel axis is provided for each grinding roller. The hydraulic cylinders are capable of swiveling the grinding rollers out of the housing. The grinding rollers are mounted next to the mill housing on consoles, and the hydraulic cylinders are located next to the consoles.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 24, 2009
    Inventors: Dirk Hoffmann, Otto Jung, Karl-Heinz Schuette, Hardy Lessmeister, Ralf Frankenberger
  • Patent number: 7252203
    Abstract: A mobile crane with a carrier and a superstructure which is slewably arranged thereon has a superlift device with an SL counterweight for increasing lifting capacity. The SL counterweight can be lifted from the ground in order to execute slewing movements of the superstructure and its slewing radius is changeable. The crane has an electronic control device with a computing device and with a display. In order to avoid costly conversion work on the SL counterweight and to increase operating safety, a program is stored in the electronic control device, which program determines a permissible operating field for crane parameters from the parameters comprising load size and load radius, size of SL counterweight and SL counterweight radius while taking into account the stability criteria and capacity criteria of the mobile crane and displays this operating field graphically on the display.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: August 7, 2007
    Assignee: Terex-Demag GmbH & Co. KG
    Inventors: Ralf Frankenberger, Jörg Lattwein, Manfred Kretschmer
  • Publication number: 20050098520
    Abstract: A mobile crane with a carrier and a superstructure which is slewably arranged thereon has a superlift device with an SL counterweight for increasing lifting capacity. The SL counterweight can be lifted from the ground in order to execute slewing movements of the superstructure and its slewing radius is changeable. The crane has an electronic control device with a computing device and with a display. In order to avoid costly conversion work on the SL counterweight and to increase operating safety, a program is stored in the electronic control device, which program determines a permissible operating field for crane parameters from the parameters comprising load size and load radius, size of SL counterweight and SL counterweight radius while taking into account the stability criteria and capacity criteria of the mobile crane and displays this operating field graphically on the display.
    Type: Application
    Filed: September 20, 2002
    Publication date: May 12, 2005
    Inventors: Ralf Frankenberger, Jorg Lattwein, Manfred Kretschmer
  • Patent number: 6516961
    Abstract: A ringlift crane having a ring which can be elevated, forms an annular track and has a plurality of segments which can be connected to one another, there being arranged within said ring an undercarriage which has an upper carriage, which is connected for slewing action to the undercarriage and has a plurality of hoisting winches. Two trusses which are spaced apart parallel to one another, are provided, in two mutually opposite end regions, with in each case one adapter and can be bolted to, and unbolted from, the upper carriage via crossmembers. The adapters are supported with rolling action on the annular track of the ring by rollers arranged in the end region of the adapters. For the purpose of setting different modes of operation of the crane, the trusses can be raised relative to the basic machine and connected in different ways to the crossmembers.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: February 11, 2003
    Assignee: Atecs Mannesmann AG
    Inventors: Alexander Knecht, Manfred Kretschmer, Michael Biermann, Ralf Frankenberger