Patents by Inventor Christian Schiel

Christian Schiel 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: 5878507
    Abstract: An apparatus and a method are indicated for a paper-making machine, for delivering liquid from a first level in a first space, through a line into a second space on a second, higher level, under the action of a difference in the gas pressures over the liquid in the first space and in the second space. A throttle valve in the line is controlled, to regulate the fluid flow, in such a way that the throttle valve is at least partly closed when the gas flow through the line rises, and is opened when there is little gas flow through the line. This guarantees continuous delivery of liquid, stable flow conditions prevail, and a delivery that is largely free of pulsation is achieved with a low proportion of gas (FIG. 2).
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: March 9, 1999
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Christian Schiel, Erich Grundler
  • Patent number: 5860322
    Abstract: A drive mechanism of a suction or deflection adjustment roll having a spur wheel gear. For a suction roll, a stationary suction box may be guided outward through the drive mechanism to be coupled with a suction device. An external gear ring may be rigidly coupled to a driven or gear end of the roll to mesh with a driven pinion. The driven pinion may be driven via a drive shaft coupled to the driven pinion through a pair of enmeshed gears. The driven pinion and an end of the drive shaft coupled to the pinion may each include a self-adjusting bearing, each self-adjusting bearing being adjacently positioned and supported on a bearing journal. The self-adjusting bearing associated with the end of the drive shaft may exhibit radial play with respect to one of an inside diameter of the drive shaft or an outside diameter of the bearing journal, which may permit tilting of the pinion with respect to the bearing journal.
    Type: Grant
    Filed: February 19, 1997
    Date of Patent: January 19, 1999
    Assignee: Voith Sulzer Papiermaschinen
    Inventors: Joachim Grabscheid, Christian Schiel, Wilhelm Mausser, Adolf Gogg
  • Patent number: 5855740
    Abstract: A press roll for treating a material web in a nip formed with an opposing surface is provided. A press shoe extends along the nip and guides a press jacket. Several adjacent force elements disposed along the direction of the roll axis are supported on a stationary carrier. The force elements are preferably each fluid-actuated cylinder/piston units which can bias the press shoe with their movable pistons. The piston of at least one force element and/or an opposing region of the press shoe concentrate support forces in piston edge regions that are disposed opposite one another on different ends of a central piston plane perpendicular to the roll axis.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: January 5, 1999
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventor: Christian Schiel
  • Patent number: 5853359
    Abstract: Deflection adjustment roll that includes a rotating roll jacket, a support member axially extending through the roll jacket, a plurality of at least one of hydrostatic and hydrodynamic support elements located next to one another with a predetermined spacing in an axial direction of the roll jacket to support the roll jacket on the support member, and a fluid removal device that removes operating fluid collected on an inner surface of the roll jacket during operation and that forms a fluid ring that circulates around the plurality support elements on the inner surface of the roll jacket. The fluid removal device may include a plurality of fluid stripping elements formed on the plurality of support elements that laterally protrude from each support element in a direction of a neighboring support element to strip the fluid circulating around the plurality of support elements from the roll jacket in the flow channels formed between the support elements.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: December 29, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Joachim Grabscheid, Christian Schiel
  • Patent number: 5851356
    Abstract: Apparatus and method for laterally sealing a drainage gap of a twin-wire paper machine. This lateral sealing has contact only with the lower wire. Between the upper wire and the lateral sealing, sealing is preferably effected by sealing water. Since this lateral sealing is elastic, it can adapt itself to the movements of the lower wire.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: December 22, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Jurgen Banning, Christian Schiel
  • Patent number: 5846173
    Abstract: An anti-deflection roll including a rotating roll sleeve, a support member or yoke that extends along the axis of the roll sleeve or jacket, and a plurality of hydrostatic and/or hydrodynamic support units, partially positioned within the support member and arranged in a predetermined spaced relation to each other, to support the roll sleeve in an axial direction. Between an inner surface of the roll sleeve and a support surface of each support unit an intermediate fluid coating layer may be formed.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: December 8, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Joachim Grabscheid, Christian Schiel
  • Patent number: 5843280
    Abstract: Press device and method for treating a material web. The press device may include a shoe press roll that includes a flexible, tubular press jacket, face plates, face plate bearings associated with the face plates, a carrier axially extending through the press jacket, the face plates coupled with axial ends of the press jacket, and a press shoe device. The press device may also include an opposing element such that the shoe press roll and the opposing element may be adapted to form a nip. The carrier may support the press shoe device and may carry the face plate bearings, and the face plates, during an unloaded state of the shoe press roll, may be arranged inclined in opposite directions to form a press jacket mount that widens in a direction of the nip.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: December 1, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventor: Christian Schiel
  • Patent number: 5829158
    Abstract: The invention is directed to a dryer section for an apparatus to produce a continuous material layer, such as paper, carton or cardboard. At least one dryer group has a plurality of dryer cylinders and guiding rollers. The dryer cylinders and guiding rollers carry the material layer along a meandering path, with each dryer cylinder and each guiding roller having a first side disposed on a same side of the dryer section. At least one mechanical drive mechanism is provided, with each drive mechanism being coupled with the first side of a dryer cylinder and/or guiding roller. A plurality of supply tubes are each connected with the first side of a corresponding dryer cylinder and/or guiding roller.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: November 3, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Karlheinz Straub, Christian Schiel
  • Patent number: 5799411
    Abstract: A steam blast box for applying steam to a web of paper conducted over a roll of a paper machine. The box has a closed steam blast chamber which extends along the roll transverse to the direction of travel of the web and to which steam can be fed. The front wall of the box, which faces the roll, has a plurality of steam outlet openings. A steam propagation space is formed between the front wall of the steam blast box and the roll. For controlling the temperature and/or for regulating the amount of heat transferred to the web of paper in the steam propagation space, an air outlet channel, which extends transverse to the direction of travel of the web and is located at the web inlet end of the steam propagation space, is provided for the admixing of air in the steam. In this way, sensitive separate, zone-wise control of the heating of the paper web can be obtained. The steam propagation space can be cooled zone-wise by feeding air on the inlet side.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: September 1, 1998
    Assignee: Voith Sulzer Papermaschinen
    Inventor: Christian Schiel
  • Patent number: 5800324
    Abstract: A roll, as in a paper making machine press section, with vibration damping, wherein the roll includes a stationary central shaft, a rotatable annular, roll shell, a plurality of hydraulic pressure chambers each with a shoe hydraulically supported therein and pressed against the interior of the annular roll shell, wherein the roll shell is subject to vibration, which vibrates the support elements. A hydraulic pressure liquid feed channel extends through the stationary shaft and communicates with each pressure chamber. A respective throttle in the form of a channel either between the feed channel and each of the pressure chambers, or one throttle channel communicating with several of the pressure chambers or a throttle channel communicating into the feed channel from the source of pressure fluid. The cross section of flow through the throttle channel is selected according to a formula, typically wherein the product d.sup.2 .times.n.sup.-1 is between 6 mm.sup.2 and 90 mm.sup.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: September 1, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventor: Christian Schiel
  • Patent number: 5788817
    Abstract: The invention relates to a roll press including at least three rolls forming several press nips for the treatment of a web of material. One press roll comprises a very flexible roll shell which is rotatable around a fixed support and is mounted on the support by at least one support element which has a concave support surface for defining a wide press nip with a cylindrical backing roll. The backing roll forms an additional press nip with at least one not sag-controlled roll. To obtain as uniform as possible a press nip between the backing roll and at least one additional roll which is without sag control, the circumference of the roll shell of the backing roll decreases axially towards its ends, i.e., that roll may be crowned.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: August 4, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Rainer Bentele, Christian Schiel, Wolf Gunter Stotz
  • Patent number: 5755931
    Abstract: A method and apparatus for treating a fiber paper web in a press device wherein the web is guided through a press nip form between a press roll and a backing element in the form of a backing roll, and wherein the press roll includes a surrounding roll jacket comprised of plastic and a stationary cross head axially traversing the roll jacket. Preserving the roll jacket by cooling the roll jacket at least areawise in the axial direction of the roll jacket which increases the abrasion resistance of the roll jacket. Various devices for cooling the roll jacket include spraying coolant at the outer surface of the roll jacket, spraying coolant at the surface of a felt belt which then engages the roll jacket in a press nip, blowing air into the outlet end of the press nip between the roll jacket and the felt belt and/or blowing air into the space surrounding the outer surface of the roll jacket, e.g., the interior of the loop of the felt belt or the interior of a liquid collecting pan surrounding the roll jacket.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: May 26, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventor: Christian Schiel
  • Patent number: 5753083
    Abstract: A shoe press device for treating a web, particularly for dewatering a web. A shoe press roll has a beam and a flexible press jacket around the beam. A press shoe on the beam presses the press jacket against a backing roll to define a press nip. Support elements supported on the beam press on the shoe. The support elements are in a first plurality along the shoe and a respective second plurality toward each end of the shoe. The second support elements are smaller in size with reference to their pressure area on the shoe, and there is one or more rows of second pressure elements at each end of the shoe. Different respective pressures may be applied to the main and second pluralities of support elements. The backing roll may be a sag adjustment roll including a rotatable roll jacket and support elements in the sag adjustment roll pressing on the roll jacket.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: May 19, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Christian Schiel, Andreas Schuette, Ulrich Wieland, Wolfgang Schuwerk, Joachim Grabscheid
  • Patent number: 5711854
    Abstract: A roll press including at least two rolls forming a press nip for the treatment of a web of material. A press roll includes a very flexible roll shell which is rotatable around a stationary support. The roll shell is mounted by at least one support element on the support. The support element has a concave support surface which forms a wide press nip with the backing roll. This provides a roll press which, even in the case of a backing roll which is without sag control, defines a press nip which is very substantially uniform. This is achieved by having the outer circumference of the shell of the press roll change in dimension in the axial direction from the axial center of the roll towards the ends of the roll, i.e., the outer circumference may increase or decrease. The circumference of the backing roll may or may not correspondingly change in the axial direction.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: January 27, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Christian Schiel, Rainer Bentele, Wolf Gunter Stotz
  • Patent number: 5705034
    Abstract: A wet-press arrangement. The flexible press jacket of a shoe press roll removes the web to be dewatered in a first press nip directly from the wire on which the web has been formed. The web then passes, together with the press jacket, through a second press nip which is developed as a felted, lengthened press nip. The web then passes through a third press nip where it is transferred from the smooth outer surface of the press jacket onto the smooth outer surface of a press roll. The web then travels, together with the latter roll, through a fourth press nip, which again is developed as a felted, lengthened press nip. Following that, the web still follows the press roll up to a place of web removal.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: January 6, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventor: Christian Schiel
  • Patent number: 5689897
    Abstract: A steam blast box for applying steam to a web of paper conducted over a roll of a paper machine. The box has a closed steam blast chamber which extends along the roll transverse to the direction of travel of the web and to which steam can be fed. The front wall of the box, which faces the roll, has a plurality of steam outlet openings. A steam propagation space is formed between the front wall of the steam blast box and the roll. For controlling the temperature and/or for regulating the amount of heat transferred to the web of paper in the steam propagation space, an air outlet channel, which extends transverse to the direction of travel of the web and is located at the web inlet end of the steam propagation space, is provided for the admixing of air in the steam. In this way, sensitive separate, zone-wise control of the heating of the paper web can be obtained. The steam propagation space can be cooled zone-wise by feeding air on the inlet side.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: November 25, 1997
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventor: Christian Schiel
  • Patent number: 5688375
    Abstract: A shoe press roll for a paper machine which, together with a backing roll, forms a press nip through which a press jacket guided over the shoe press roll travels together with a paper web. The shoe press roll comprises a press shoe which can be pressed by at least one hydraulic element against the backing roll. The hydraulic element is developed as a cylinder/piston unit that acts between a stationary support member and the press shoe. The unit includes a first pressure chamber which can be acted on by hydraulic pressure and is in communication via a small diameter throttle point passing through the piston with a second pressure chamber which is open toward the press shoe. The edge of the piston rests with a sealing surface against the press shoe. Hydraulic pressure is transmitted from the first pressure chamber under approximately static conditions, to the second pressure chamber through the throttle point and thus to the press shoe.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: November 18, 1997
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventor: Christian Schiel
  • Patent number: 5670023
    Abstract: The press section of a paper machine for thin papers has the following characteristics: a pressing gap is formed by a rotary, smooth surface (1) in contact with the paper and by a felted pressing roll (3); the smooth surface (1) transfers the paper web downstream of the pressing gap to a heatable roll (4) without free pulling of the paper web. The invention is characterized in that the smooth surface (1) is the outer surface of a tubular roll with dimensionally stiff roll sleeve.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: September 23, 1997
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Karl Steiner, Albrecht Meinecke, Rui Goncalves, Christian Schiel
  • Patent number: 5662777
    Abstract: A shoe press roll for a press device for a paper machine. The roll includes a stationary support. A press shoe supported on the support in a radially displaceable manner. A plurality of hydraulic elements in the support and arrayed along the length of the press shoe across the width of the web to urge the press shoe against the backing roll. A plurality of return springs connected between the support and the leading and trailing sides of the press shoe, the springs being located outside the hydraulic elements at the press shoe. The return springs are compression springs fastened by struts on the lateral sides of the press shoe which involves a simple mounting for enabling separable attachment of the tie rods of the spring and the lateral sides of the press shoe.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: September 2, 1997
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Christian Schiel, Ulrich Wieland
  • Patent number: 5645691
    Abstract: The invention provides a roll for a papermaking machine, comprising at least one strip element which extends substantially in the axial direction of the roll and which is supported, substantially against radial forces, by a plurality of supporting elements. The supporting elements comprise adjusting means by means of which a predetermined profile of the bending curve of the strip element can be adjusted in response to a given outer load. When the roll is configured as a shoe press roll, then the strip element may also be directly coupled with the press shoe. It is possible in this way, in the case of shoe press rolls, to ensure safe development of a hydrodynamic lubricating wedge and, in the case of other rolls, to adjust a desired profile of the bending curve of the strip element, under a given outer load.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: July 8, 1997
    Assignee: Voith Sulzer Papiermaschinen
    Inventors: Thomas Zuefle, Christian Schiel, Karl Steiner