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).
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Patent number: 6527916Abstract: Pressing section of paper machine including first and a second pressing stations, a common lower felt arranged to run through first and the second pressing stations, and an first upper felt and a second upper felt arranged to run through first and second pressing stations. Second pressing station includes shoe press roll located above a lower roll, and pressing plane of second pressing station is oriented essentially vertically or inclined at an angle &bgr;, which is a maximum of about 20° to vertical. The common lower felt is sufficiently dense to be essentially air impermeable even in its new state after moistening, and is sufficiently open to allow water through at pressures greater than about 5 bar. First and second upper felts are sufficiently open to allow air through in their moistened, uncompressed state, and pressing plane of first pressing station is oriented at an angle greater than angle &bgr;.Type: GrantFiled: April 9, 2001Date of Patent: March 4, 2003Assignee: Voith Paper Patent GmbHInventor: Christian Schiel
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Publication number: 20020060050Abstract: Pressing section of paper machine including first and a second pressing stations, a common lower felt arranged to run through first and the second pressing stations, and an first upper felt and a second upper felt arranged to run through first and second pressing stations. Second pressing station includes shoe press roll located above a lower roll, and pressing plane of second pressing station is oriented essentially vertically or inclined at an angle &bgr;, which is a maximum of about 20° to vertical. The common lower felt is sufficiently dense to be essentially air impermeable even in its new state after moistening, and is sufficiently open to allow water through at pressures greater than about 5 bar. First and second upper felts are sufficiently open to allow air through in their moistened, uncompressed state, and pressing plane of first pressing station is oriented at an angle greater than angle &bgr;.Type: ApplicationFiled: April 9, 2001Publication date: May 23, 2002Applicant: VOITH PAPER PATENT GmbHInventor: Christian Schiel
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Patent number: 6197157Abstract: A press device for draining and/or smoothing, or shaping the surface and controlling the sheet structure of fibrous pulp webs with a surface weight of under 100 g/m2, such as the fibrous pulp webs used to make graphic papers. The device has a press area which includes at least one press nip through which, during operation, the fibrous pulp web is fed at a velocity of at least 1200 m/min, under simultaneous impingement by pressure. The press area includes at least two press zones subsequent to one another. The device is further characterized by a K value of at least 2.5 kPa·s·m. This K value is the product of L1 and Itot. L1 is the length of the first press zone, measured along the direction in which the web runs, and Itot is the total press impulse operating on the fibrous pulp web in the entire press area.Type: GrantFiled: February 12, 1998Date of Patent: March 6, 2001Assignee: Voith Sulzer Papermaschinen GmbHInventors: Rudolf Hasenfuss, Joachim Grabscheid, Christian Schiel, Wolfgang Schuwerk
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Patent number: 6159880Abstract: A felt provides a uniform paper-supporting surface having good water storage and water release properties. These qualities are effected by a bat including one or more layers of fine fibers being needled onto a base containing perforations and cavities. The free surfaces of the bat fibers needled into the cavities are reduced in a special production step following the needling operation.Type: GrantFiled: June 15, 1998Date of Patent: December 12, 2000Inventor: Christian Schiel
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Patent number: 6153056Abstract: Draining device and method for draining water from an interior surface of a felt belt loop circulating in a run direction via centrifugal force at a region of convex curvature of the interior surface of the felt belt. The draining device includes jets positioned across a width of the felt belt adapted to blast one of a displacing material and a displacing fluid against the felt belt at a position of one of in and in front of the convex region with respect to the run direction. The method includes directing jets of one of displacing fluid and displacing material against the interior surface of the felt belt to displace the water in the interior surface of the felt belt, and centrifugally spinning the displaced water out of the interior surface of the felt belt into a collecting device located within the felt belt loop.Type: GrantFiled: June 30, 1998Date of Patent: November 28, 2000Assignee: Voith Sulzer Papiertechnik Patent GmbHInventor: Christian Schiel
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Patent number: 6126788Abstract: An apparatus for the dewatering of a traveling press felt carries a purging fluid to the inside surface of the felt loop. The purging fluid flushes water from the felt into receptacles inside the felt loop. Purging nozzles oriented in the cross machine direction, or a multitude of suction slots oriented in the running direction, may be used. The nozzles or slots are incorporated into a nozzle block that is fastened to a suction box or a blow box.Type: GrantFiled: June 29, 1998Date of Patent: October 3, 2000Inventor: Christian Schiel
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Patent number: 6126789Abstract: A shoe press, in particular for a paper machine, comprising a pair of rolls, with one roll having a flexible roll sleeve that rotates around a stationary carrier and support devices, the flexible roll sleeve having axial end areas and being mounted on a carrier in a radially rotatable manner at each of its axial end areas over the support devices, each roll having a shoe with a flat support surface, the support surface of the shoe of one roll supporting an interior side of the roll sleeve, the support surfaces being arranged essentially parallel to each other to create a press opening therebetween, and at least one of the support devices being radially flexible, and in particular elastic.Type: GrantFiled: November 4, 1997Date of Patent: October 3, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Christian Schiel, Andreas Schuette, Wolfgang Schuwerk, Joachim Grabscheid, Werner Leitenberger, Uwe Matuschczyk, Christian Steger, Wolf Gunter Stotz
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Patent number: 6116156Abstract: A machine is provided for producing a continuous material web. In particular, a paper web or a cardboard web can be produced by the machine. The machine has a number of rolls, around which the material web is guided by the use of at least one belt. The belt has at least two zones. The zones have different properties with at least one of the zones being designed to transmit a drive force to the rolls of the machine.Type: GrantFiled: July 2, 1998Date of Patent: September 12, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Christian Schiel, Karlheinz Straub
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Patent number: 6106447Abstract: Press jacket for a press device for the treatment of a web material. The press jacket may include a surface and a plurality of holes formed in the surface, such that each of the plurality of holes having a longitudinal axis and outlet. A portion of the plurality of holes may be oriented such that their respective longitudinal axes are tilted at respective outlets at an angle to perpendicular to the surface and a magnitude of the angle of tilt for longitudinal axes of at least some adjacent holes may be different. The press jacket may be utilized in combination with a press roll in a press device.Type: GrantFiled: February 9, 1998Date of Patent: August 22, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventor: Christian Schiel
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Patent number: 6083349Abstract: A machine for manufacturing a fibrous pulp web, in particular a tissue or hygienic paper web with a main press, including a contact shoe press unit and a drying cylinder, and a shoe pre-press. The main press is so designed that the pressure profile which is built up in its press opening along the length of the opening exhibits increasing pressure, which starts at the beginning of the opening and extends along at least one third, preferably a minimum of one half the length of the opening. The length of the main press is shorter (1/3 to 2/3) than the length of of the pre-press, the linear force of the pre-press is greater than the linear force of the main press, and the maximum pressure of the main press is greater than the maximum pressure of the pre-press.Type: GrantFiled: December 23, 1997Date of Patent: July 4, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventor: Christian Schiel
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Patent number: 6065396Abstract: Press device to treat a fibrous pulp web that may include a shoe press roll and a mating roll. The shoe press roll and the mating roll may be positioned to form a press nip, and at least one endless belt guided through the press nip and forming a substantially non-flexible and rigid drive element at least partially driving the press device.Type: GrantFiled: October 15, 1997Date of Patent: May 23, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Christian Schiel, Andreas Schuette, Wolfgang Schuwerk, Joachim Grabscheid, Werner Leitenberger, Uwe Matuschczyk, Christian Steger
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Patent number: 6036820Abstract: Shoe press unit and method for treatment of a fibrous pulp web. The shoe press unit includes at least one press shoe, an opposing surface, a flexible press belt guided over the press shoe, and at least one force element composed of a cylinder/piston unit supported on a carrier. The at least one force element presses the press belt against the opposing surface to form a press zone elongated in a web run direction, and the cylinder/piston unit include a pressure chamber having at least one pair of cylinder/piston subunits successively positioned in the web run direction. Pressure fluid lines are coupled to respective ones of the at least one pair of cylinder/piston subunits to separately supply pressure fluid to each cylinder/pressure subunit to impart a tilting moment long a tilt axis substantially perpendicular to the web run direction.Type: GrantFiled: April 9, 1998Date of Patent: March 14, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Christian Schiel, Joachim Grabscheid, Wolfgang Schuwerk, Rudolf Hasenfuss
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Patent number: 6012234Abstract: A machine for drying a continuous web is provided. At least one drying cylinder around which the web is dried is provided. The cylinder includes a sleeve which transfers heat from steam in the cylinder to an outer surface which contacts the web. The sleeve includes, on an inner periphery thereof, circumferential grooves separated from each another by ribs. At least one of the grooves has a width at its radial outer end which is wider than a width at its mouth at a radial inner end. At least one of the ribs has a width at its radial outer end which is smaller a width at its radial inner end.Type: GrantFiled: December 23, 1997Date of Patent: January 11, 2000Assignee: Voith Sulzer Papiermaschinen GmbHInventor: Christian Schiel
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Patent number: 6004429Abstract: A machine and method for producing a fibrous material web, in particular a tissue paper or bathroom tissue web, whereby the machine includes at least one pre-press embodied as a shoe press, a main press, in the form of a press roll, and a drying cylinder, an endless top belt guided through the nips of the pre-press and the main press, and an underfelt guided via a bottom roll of the pre-press, wherein the top belt supplies the fibrous material web that has been preformed in a former first to the pre-press and then to the main press. The pre-press, which is embodied as a shoe press and has a nip that is elongated in the web travel direction, includes an upper shoe press unit and a bottom roll disposed opposite this. The upper shoe press unit is provided with a smooth, rotating flexible press belt. The bottom roll is grooved.Type: GrantFiled: December 22, 1997Date of Patent: December 21, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventor: Christian Schiel
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Patent number: 5997694Abstract: A press arrangement of a paper or cardboard machine for the treatment of a fibrous pulp sheet in a press opening that is extended in the run direction of the fibrous pulp sheet. The press opening is defined by two press surfaces, at least one of which is constructed of a flexible press sleeve that is guided over at least one press shoe. The flexible press sleeve is further able to press against the opposing press surface with the aid of the press shoe due to the creation of a fluid cushion between the press shoe and the press sleeve. The press shoe is thus able to be tensioned such that a resulting main press force is exerted in a direction that runs substantially perpendicular to the fibrous pulp sheet being guided through the press opening. A lever is designed to load the press shoe with an positive or negative force that acts on the press shoe substantially perpendicular to the resulting main press force.Type: GrantFiled: August 4, 1997Date of Patent: December 7, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Christian Schiel, Wolfgang Schuwerk, Joachim Grabscheid, Rudolf Hasenfuss
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Patent number: 5935385Abstract: A press device, e.g., a shoe press device, for treating a sheet of material, e.g., paper or cardboard, in an elongated press gap elongated in a travel direction of the sheet of material. The press device may include a flexible roll jacket that runs around a stationary carrier, an opposing face that forms the elongated press gap with the flexible roll jacket, and at least one of a hydrodynamically and hydrostatically lubricated support element supported on the carrier. The support element may include a compression face adapted to a shape of the opposing face and at least one cloth belt guided through the elongated press gap. The support element may further include an entry face for the flexible roll jacket and for the cloth belt and positioned before the compression face in the travel direction of the sheet of material. A lubricant aspiration device is located before the support element in the travel direction, and is spaced from the roll jacket during normal operation.Type: GrantFiled: April 18, 1997Date of Patent: August 10, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Joachim Grabscheid, Christian Schiel, Andreas Schuette
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Patent number: 5925219Abstract: Shoe press for treating a material web that may include a press shoe to be pressed against an opposing element, e.g., a counter roll, with a fluid permeable press jacket and a felt belt being positionable between the press shoe and the opposing element, and a plurality of support elements including cylinder devices and pistons supported on a carrier. The press shoe may have a concave-shaped press face forming a nip with the opposing element such that the nip has a predetermined longitudinal span. The press shoe may be movable on the plurality of support elements, and the pistons of the plurality of support elements may carry the press shoe to permit a tilting movement of the press shoe both in a web travel direction and lateral to the web travel direction. A stop may support the press shoe in the web travel direction and may absorb horizontal forces acting on the press shoe.Type: GrantFiled: May 30, 1997Date of Patent: July 20, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventor: Christian Schiel
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Patent number: 5908537Abstract: 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: GrantFiled: May 31, 1996Date of Patent: June 1, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Rainer Bentele, Christian Schiel, Wolf Gunter Stotz
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Patent number: 5895007Abstract: A method and device for winding a paper web to form a reel. The web is wound onto a shell that is predominantly centrally driven to introduce a torque that winds the web on the shell into a reel. A pressure element extends over the width of the web and acts continuously on the outer surface of the reel being wound in order to squeeze out air. A web threading roll comes adjacent the shell during web threading. Once the web is threaded, the shell is moved generally horizontally from the web threading toward the main winding position where the web is wound. A compensation device supports the reel being wound. The first pressure element in contact with the reel may move away, and a second pressure element closer to the compensation device may press upon the reel, after the first pressure element has moved away.Type: GrantFiled: August 28, 1997Date of Patent: April 20, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Roland Moller, Ralf Preising, Karl Ruck, Christian Schiel
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Patent number: 5878507Abstract: 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: GrantFiled: September 18, 1996Date of Patent: March 9, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Christian Schiel, Erich Grundler