Patents Assigned to Fette GmbH
  • Patent number: 7665596
    Abstract: Apparatus for the outflow of pressed items from a rotary press, with a first channel section connecting directly to the rotary press, to which at least two channel sections are connected, to which a deflector is attached, which is swivel mounted at an axis almost vertical to the longitudinal extension of the first and/or second channel section and optionally connects the first channel section with one of the other channel sections and a pivot drive for the deflector below or above the channel sections, characterized in that a bearing pin for the deflector is connected in a torque-proof manner with a channel section and the swivel drive is coupled with the deflector via a magnetic coupling eccentric to the bearing pin.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: February 23, 2010
    Assignee: Fette GmbH
    Inventors: Sven Kolbe, Ulrich Arndt
  • Publication number: 20100028478
    Abstract: A powder press, with a press frame, which comprises an upper and lower frame section, an upper linear drive attached to the upper frame section and a lower linear drive attached to the lower frame section, wherein the drives are connected to an upper and lower punch plate or a die table, respectively, wherein the punch plates have a clamping system for an upper or a lower punch, a die clamping system on a die table with a die, and at least one force measuring device for measuring the pressing force on at least one punch, characterized in that at least one force measuring device is disposed between a punch plate and the associated clamping system.
    Type: Application
    Filed: June 26, 2009
    Publication date: February 4, 2010
    Applicant: Fette GmbH
    Inventors: Udo Baltruschat, Stephan Mallon, Harald Romer, Jan Naeve, Ingo Schmidt
  • Patent number: 7654814
    Abstract: Rotary press comprising a rotor rotatably driven about a vertical axis, said rotor exhibiting a die plate and upper and lower punches which are vertically guided in guides of the rotor working together with die holes in a die plate, at least one press station which exhibits an upper and a lower pressure passed by the punches and through which the punches are moved towards the die hole in order to compress the material in the die hole, characterized in that the rotor is provided with means which act upon compacts or parts thereof which adhere to the pressing surface or which means eliminate or prevent an adherence of a compact or parts thereof to the pressing surface of the upper punch, respectively, during the return stroke.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: February 2, 2010
    Assignee: Fette GmbH
    Inventors: Jürgen Schikowski, Ingo Schmidt, Thorsten Ehrich, Helmut Bommrowitz
  • Patent number: 7648353
    Abstract: A visual monitoring device for rotary presses, in which a rotor, with upper and lower punches and a die plate, at least one compression station, at least one filling station, and at least one ejector station are arranged in a housing, at which individual process steps occur, characterized in that arranged in the housing is at least one high speed camera, whose lens is directed onto a location in the housing, and to which an image analysis device is connected.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: January 19, 2010
    Assignee: Fette GmbH
    Inventors: Matthias Meier, Ingo Schmidt, Peter Lueneburg
  • Patent number: 7641466
    Abstract: A tablet press with a rotor, which is rotatably mounted in a stand of the tablet press and which has an upper punch accommodation for the upper punches and a lower punch accommodation for the lower punches of the tablet press, as well as a die plate with a series of die bores which are aligned with the upper and the lower punches, wherein the die plate consists of at least two ring segments which can be attached on the rotor by means of a fastening device, wherein clamping elements are arranged in axis parallel passages of the rotor spaced apart in the perimeter distance, which act against the ring segments from the bottom side and clamp against an abutment surface of the rotor, characterized in that at least one drive device for the clamping elements is arranged in the stand of the tablet press, with a coupling element adjustable in the height, which can be selectively set into engagement with the lower end of the clamping element.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: January 5, 2010
    Assignee: Fette GmbH
    Inventors: Daniel Malick, Wolfgang Soltau, Joerg Gaedecke, Matthias Rau
  • Patent number: 7641465
    Abstract: A rotor for a rotary tablet press, which has an upper and a lower punch guiding for upper and lower punches, which co-operate with bores of a die plate which is arranged between the upper and the lower punch guiding, wherein the punches have shafts, which are sealedly axially movable in guiding bores of the punch guidings by means of a sealing arrangement, and wherein means act between the shafts and the guiding bores which prevent a rotation of the pressing punches in the punch guidings, characterised in that the shafts have an out of round profile in the cross section, and the cross section of the guiding bores is complementary.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: January 5, 2010
    Assignee: Fette GmbH
    Inventors: Friedrich Meissner, Wolfgang Soltau, Jan Naeve, Peter Lueneburg
  • Patent number: 7637728
    Abstract: A rotary tablet press, with a rotor driven by a driving motor, which has a die plate as well as an upper and a lower guiding for upper and lower punches, which co-operate with bores of the die plate, a stationary housing closely surrounding the rotor, which constitutes a pressing room, and with at least one ring-shaped sealing arrangement, which seals the housing against a punch guiding, wherein the sealing arrangement has a ring-shaped holder inside the housing, wherein the ring-shaped holder is axially movable between a first and a second position by means of a stationarily arranged lifting device, the sealing arrangement has a first sealing portion, which is continuously in engagement with a first sealing surface of the housing in the first and in the second position, and a second sealing portion which is in engagement with a second sealing surface of the punch guiding with a first sealing force in the first position and is in engagement with the second sealing surface in the second position either with a
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: December 29, 2009
    Assignee: Fette GmbH
    Inventors: Harald Roemer, Wolfgang Soltau, Kai Huebner, Hans Wolf
  • Publication number: 20090311063
    Abstract: Tool arrangement for the production of helical teeth in gear wheels, wherein a roughing hob (20), at least one deburring cutter (16, 18) and a finishing hob (12) can be fastened on a common mandrel (14) in a predetermined rotational position relative to one another, and the teeth of the finishing hob, which are situated along a helical line, each have a different cross section such that the engagement angle of the right or left flanks decreases continuously starting from a maximum value of the first tooth up to the last tooth, and the maximum engagement angle of the right flanks of the first or last tooth coincides with the minimum engagement angle of the left flanks, and vice versa.
    Type: Application
    Filed: September 6, 2006
    Publication date: December 17, 2009
    Applicants: FETTE GMBH, LIEBHERR-VERZAHNTECHNIK GMBH
    Inventors: Wolfgang Carmincke, Oliver Winkel
  • Publication number: 20090267303
    Abstract: Method for closing bags made of plastics, in which initially a clip made of plastics is positioned in a clamping manner around the gathered upper end of the bag and subsequently the gathered end of the bag is welded and/or sealed by means of a hot surface.
    Type: Application
    Filed: April 9, 2009
    Publication date: October 29, 2009
    Applicant: Fette GmbH
    Inventors: Detlef Nuppenau, Dieter Schmidt, Eugen Kruger, Michael Markl, Jens Mannshardt
  • Publication number: 20090269433
    Abstract: A punch for a rotary press, which has a shaft and a head, wherein the head has an upper mirror surface, a cylinder surface and a rounded transition area between the mirror surface and cylinder surface with a first and a second radius, wherein the first radius is larger than the second radius and wherein the punch head also has a preferably conical transition area from the cylinder surface to the shaft, wherein the diameter of the head is less than 25 mm and the first radius of the transition area is selected such that its height is less than half the height of the cylinder surface.
    Type: Application
    Filed: April 2, 2009
    Publication date: October 29, 2009
    Applicant: Fette GmbH
    Inventors: Jurgen Schikowski, Friedrich Meissner, Jan Naeve, Harald Romer, Reinhard Wagner
  • Publication number: 20090252823
    Abstract: A rotor for a rotary tablet press, which has an upper and a lower punch guide for upper and lower punches that interact with holes in a die plate that is arranged between the upper and lower punch guide, where the punches are axially movable in guide holes of the punch guides and have heads that interact with compression rollers of the tablet press, wherein the press punches are guided axially in the guide holes secure against rotation, and the punch heads have on opposite sides flat areas that are facing the adjacent punch heads.
    Type: Application
    Filed: September 11, 2008
    Publication date: October 8, 2009
    Applicant: Fette GmbH
    Inventors: Friedrich Meissner, Wolfgang Soltau
  • Publication number: 20090243132
    Abstract: The present invention is related to an apparatus and a method for the measurement of the vertical position of upper and lower punches, pairwisely associated to a rotatably driven rotor of a rotary tablet press and rotating synchronously with the rotor, which perform a vertical movement in certain regions along the circumference of their rotational movement during a rotation of the rotor. The apparatus features at least one scale arranged on at least one of the upper and/or lower punches, running in parallel to the vertical movement direction of the respective upper and/or lower punch, and at least one reading device associated to the scale, also rotating synchronously with the rotor, by means of which a vertical position of the respective upper and/or lower punch can be measured by reading out the scale. The inventions is furthermore related to a corresponding rotary tablet press and a corresponding method.
    Type: Application
    Filed: March 20, 2009
    Publication date: October 1, 2009
    Applicant: Fette GmbH
    Inventors: Ingo Schmidt, Keno Freyer, Werner Seifert, Wolfram Lammerhirt
  • Publication number: 20090235710
    Abstract: A knurling tool, with a base body featuring an axis and adapted to be clamped into a machine tool, which accommodates a holder and knurling wheels rotatably mounted in the holder, wherein knurling wheels arranged at equal circumferential distances are mounted in the holder around a wheel axis which embraces a first angle ?1 with respect to the supporting axis, wherein a workpiece cone is insertable between the knurling wheels along the supporting axis and the knurling wheels embrace a second cone angle ?2, wherein the holder features three segments, each of which mounting one knurling wheel via a bearing pin, an adjustment device is provided by which the segments, being guided radially, are radially adjustable synchronously about a certain amount, and fixing means are provided which fix the adjustment device and the segments, respectively, in an occupied position.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 24, 2009
    Applicant: Fette GmbH
    Inventors: Frank Richter, Wolfgang Hahn
  • Publication number: 20090191297
    Abstract: A tablet press with a rotor, which is rotatably mounted in a stand of the tablet press and which has an upper punch accommodation for the upper punches and a lower punch accommodation for the lower punches of the tablet press, as well as a die plate with a series of die bores which are aligned with the upper and the lower punches, wherein the die plate consists of at least two ring segments which can be attached on the rotor by means of a fastening device, wherein clamping elements are arranged in axis parallel passages of the rotor spaced apart in the perimeter distance, which act against the ring segments from the bottom side and clamp against an abutment surface of the rotor, characterised in that at least one drive device for the clamping elements is arranged in the stand of the tablet press, with a coupling element adjustable in the height, which can be selectively set into engagement with the lower end of the clamping element.
    Type: Application
    Filed: November 25, 2008
    Publication date: July 30, 2009
    Applicant: Fette GmbH
    Inventors: Daniel Malick, Wolfgang Soltau, Joerg Gaedecke, Matthias Rau
  • Patent number: 7559755
    Abstract: A press for the manufacture of dimensionally stable compacts from powdered material, characterized by the features of a press frame having vertically adjustable columns and cross-connections, a die retainer plate, at least one upper ram retaining plate, at least one lower ram retaining plate, a guide column outside a press main axis which has two parallel guideways on which all retainer plates are adapted to be guided vertically on one side or be selectively locatable, wherein the lower end of the guide column is fixedly coupled to a frame-mounted lower plate and the upper end is located on the press frame, an upper adjustable drive adapted to be located on the press frame, for the upper retaining plate (34), a lower adjustable drive (68) for the lower retaining plate (38, 40) and the die retainer plate, if desired, and which is fixed to the frame-mounted lower plate.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: July 14, 2009
    Assignee: Fette GmbH
    Inventors: Udo Baltruschat, Holger Behns, Carsten Jordt, Jan Naeve, Thomas Pannewitz, Martin Plucinski, Harald Romer
  • Publication number: 20090152751
    Abstract: The present invention is related to a method for testing multilayer tablets in a multiple rotary press, in which die holes of a circulating die plate are successively filled with tablet material of different layers in succeeding filling devices, and the tablet material is compressed one layer after the foregoing layer into pressed articles having n layers by means of synchronously circulating compression punches, and the pressed articles are subsequently ejected in an unloading station and taken out, in which in a testing procedure, pressed articles with m layers are taken out after the compression in a respective unloading station and are conveyed to a testing station, wherein applies 1<=m<=n, wherein before taking out the pressed articles, at least the m-th layer is compressed more strongly than during the normal manufacture of the multilayer tablets, wherein applies m<n.
    Type: Application
    Filed: December 4, 2008
    Publication date: June 18, 2009
    Applicant: Fette GmbH
    Inventors: Harald Roemer, Jan Naeve, Heinrich Behrmann, Kurt Marquardt
  • Publication number: 20090142437
    Abstract: A filling apparatus for a rotary tablet press, which itself being arranged stationarily is associated to a circulating die plate of a rotor of the tablet press, with a filling chamber, which features an upper inlet opening for powder-shaped compression material and a filling opening aligned with die bores of the die plate, and with a conveying means in the filling chamber driven by a drive motor, wherein the filling chamber is circular, one single disc-shaped filling wheel is rotatably mounted around a vertical axis in the filling chamber, which has plural wings on the perimeter, spaced apart in the perimeter direction, which sweep over the filling opening upon rotation of the filling wheel, and the inlet opening is arranged in a distance above the filling wheel, preferably approximately centred with the axis of the filling wheel.
    Type: Application
    Filed: November 3, 2008
    Publication date: June 4, 2009
    Applicant: FETTE GmbH
    Inventors: Harald ROEMER, Jan NAEVE, Matthias DEDERICHS, Wolfgang SOLTAU, Ulrich ARNDT
  • Publication number: 20090142438
    Abstract: A rotary press with a stand, in which a rotor driven by a drive motor is rotatably mounted around a vertical axis, wherein the rotor has an upper and a lower punch guide for upper and lower punches and a die plate between the punch guides, wherein further the compression punches co-operate with die bores of the die plate, and further with at least one filling- and dosage station arranged on a circle, which has a radial dosage cam element which is adjustable in its height by means of a dosage drive and which presets the height of the lower punches in the filling- and dosage station, with at least one compression station arranged on a circle with at least one upper and one lower compression roller, which co-operate with the upper and lower punches, wherein the compression rollers are adjustable in the height by a compression roller drive, and with fastening means for fastening the compression roller- and dosage drives on the stand, wherein the dosage drive and the compression roller drive have identical install
    Type: Application
    Filed: November 26, 2008
    Publication date: June 4, 2009
    Applicant: Fette GmbH
    Inventors: Harald Roemer, Frank Schade, Peter Lueneburg
  • Publication number: 20090139417
    Abstract: A rotary press with a stand, a rotor rotatably mounted around a vertical axis in the stand and being driven, which has an upper and a lower compression punch accommodation for upper and lower punches which co-operate with bores of a die plate of the rotor, and upper and lower control cam elements which can be detachably fastened on a cam carrier of the stand and which guide heads of the compression punches by means of control cams during the rotation of the rotor, characterised in that at least one control cam element, guiding the compression punch heads radially outside or radially inside, can be detachably fastened on the carrier and can be moved radially away from the punch heads when the fastening means is detached, so far that by-passing the punch heads, it can be taken out parallel to the axis of the rotor, towards the upside or towards the bottom side, respectively.
    Type: Application
    Filed: October 31, 2008
    Publication date: June 4, 2009
    Applicant: FETTE GMBH
    Inventors: Peter LUENEBURG, Matthias DEDERICHS, Ulrich ARNDT
  • Publication number: 20090072491
    Abstract: A rotary tablet press, with a rotor driven by a driving motor, which has a die plate as well as an upper and a lower guiding for upper and lower punches, which co-operate with bores of the die plate, a stationary housing closely surrounding the rotor, which constitutes a pressing room, and with at least one ring-shaped sealing arrangement, which seals the housing against a punch guiding, wherein the sealing arrangement has a ring-shaped holder inside the housing, wherein the ring-shaped holder is axially movable between a first and a second position by means of a stationarily arranged lifting device, the sealing arrangement has a first sealing portion, which is continuously in engagement with a first sealing surface of the housing in the first and in the second position, and a second sealing portion which is in engagement with a second sealing surface of the punch guiding with a first sealing force in the first position and is in engagement with the second sealing surface in the second position either with a
    Type: Application
    Filed: September 12, 2008
    Publication date: March 19, 2009
    Applicant: Fette GmbH
    Inventors: Harald Roemer, Wolfgang Soltau, Kai Huebner, Hans Wolf