Patents Assigned to Walzen Irle GmbH
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Patent number: 7481754Abstract: A roll has a roll body having a central bore and a first end and a second end. Roll necks are flange-mounted to the first and second ends of the roll body, respectively, for supporting the roll body in bearings. At least one compensation weight is eccentrically arranged in the central bore. The at least one compensation weight is adjustable with regard to its mass, an angular position within the roll body, and/or a radial spacing relative to a central axis of the roll body. The at least one compensation weight is adjustable while the roll necks are flange-mounted on the first and second ends.Type: GrantFiled: June 2, 2004Date of Patent: January 27, 2009Assignee: Walzen Irle GmbHInventors: Jürgen Krüger, Wolfgang Wiertz, Klaus-Peter Schramm, Berthold Krämer, Ludwig Hellenthal
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Patent number: 7174949Abstract: The invention relates to a calender bowl which can be heated by means of a heating medium that is in a liquid or gaseous state of matter. The calender bowl comprises a roll body (1) that is provided with peripheral bores (4) and flange journals (2, 3) comprising supply and discharge conduits for the heating medium. Thermal insulating bushes (8) are mounted on the end areas of the peripheral bores. The heating medium flows through the peripheral bores. The aim of the invention is to adapt the heat transfer from said bores to the lateral surface of the roll body to the respective heat requirements in such a way that the harmful measured differences stay within limits so that the product is not impaired. To this end, adjusting devices are allocated to the flange journals for controllably turning and/or axially displacing the insulating bushes.Type: GrantFiled: March 1, 2000Date of Patent: February 13, 2007Assignee: Walzen Irle GmbHInventors: Ludwig Hellenthal, Berthold Krämer, Wolfgang Krönert, Walter Patt, Joachim Schönemann, Klaus-Peter Schramm, Jaxa von Schweinichen
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Patent number: 7018512Abstract: A paper processing roll for use in a calender of a paper-making machine which during operation can be exposed to increased temperatures is provided with a heat-treated surface which is produced by hot-grinding or hot-balancing or both.Type: GrantFiled: December 5, 2001Date of Patent: March 28, 2006Assignee: Walzen Irle GmbHInventors: Jaxa von Schweinichen, Klaus-Peter Schramm, Wolfgang Wiertz, Ludwig Hellenthal
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Publication number: 20040266596Abstract: A roll has a roll body having a central bore and a first end and a second end. Roll necks are flange-mounted to the first and second ends of the roll body, respectively, for supporting the roll body in bearings. At least one compensation weight is eccentrically arranged in the central bore. The at least one compensation weight is adjustable with regard to its mass, an angular position within the roll body, and/or a radial spacing relative to a central axis of the roll body. The at least one compensation weight is adjustable while the roll necks are flange-mounted on the first and second ends.Type: ApplicationFiled: June 2, 2004Publication date: December 30, 2004Applicant: Walzen Irle GmbHInventors: Jurgen Kruger, Wolfgang Wiertz, Klaus-Peter Schramm, Berthold Kramer, Ludwig Hellenthal
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Patent number: 6824803Abstract: A method of using a rotatable roll for rolling oil-containing agricultural products or other types of cereals or foodstuffs. The roll has a roll body of metal and an outer covering of a non-metal material, especially synthetic material or a mixture of synthetic material and rubber.Type: GrantFiled: June 1, 2001Date of Patent: November 30, 2004Assignee: Walzen Irle GmbHInventor: Joachim Schönemann
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Patent number: 6793008Abstract: A rotatable roller has a roller body with channels for guiding a medium through the roller body for controlling the temperature of the roller body. At least one of the channels has a separating member separating the at least one channel into separate channel portions such that media having different properties are separately guided through the at least one channel. The separating member is helically shaped.Type: GrantFiled: April 10, 2003Date of Patent: September 21, 2004Assignee: Walzen Irle GmbHInventor: Jaxa von Schweinichen
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Publication number: 20020069994Abstract: A paper processing roll for use in a calender of a paper-making machine which during operation can be exposed to increased temperatures is provided with a heat-treated surface which is produced by hot-grinding or hot-balancing or both.Type: ApplicationFiled: December 5, 2001Publication date: June 13, 2002Applicant: Walzen Irle GmbHInventors: Jaxa von Schweinichen, Klaus-Peter Schramm, Wolfgang Wiertz, Ludwig Hellenthal
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Publication number: 20010027863Abstract: A heat exchanger which is symmetrical with respect to rotation, especially a thermal roller which is driveable for rotation and is heated by a fluid or gas, preferably a heat transfer oil, water or steam, and is preferably used in the paper industry includes at least one shut-off device for cutting off the forward flow and/or return flow of the thermal roller as soon as the forward flow pressure and/or the return flow pressure of the heat transfer medium drops off significantly or drops to zero.Type: ApplicationFiled: February 2, 2001Publication date: October 11, 2001Applicant: Walzen Irle GmbH and S.D. Warren Service CmpanyInventors: Ludwig Hellenthal, Abbott W. Mosher
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Patent number: 6278094Abstract: An induction heating system for a thermal roller comprises a rotatable hollow roller jacket having flanges at opposite ends thereof, the flanges concentrically surrounding the axis of the roller jacket and the roller jacket defining an enclosed space, and an inductor arranged within the enclosed space and inductively coupled with the roller jacket, the inductor consisting of an inductor spool through which a current flows and a magnetic core formed by the roller jacket, the inductor spool comprising a plurality of elongated outer current conductors peripherally arrayed close to an inner surface of the roller jacket and extending parallel to the axis at least across the greatest surface width of the roller jacket, the inductive coupling with the roller jacket being adjustable in zones, and flanges concentrically surrounding the axis, the roller jacket flanges forming bearings for the inductor spool flanges.Type: GrantFiled: November 12, 1999Date of Patent: August 21, 2001Assignee: Walzen Irle GmbHInventors: Hans-Jochen Rindfleisch, Ludwig Hellenthal, Walter Patt, Jaxa von Schweinichen
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Patent number: 5370177Abstract: A thermally regulatable calender roll, e.g. for drying paper webs, can have a roll body centered on a pair of flanged stub shafts whose flange on at least one end of the roll body can be provided with at least one annular groove or chamber communicating with the heating bores of the roll body. The pitch circle of the heating bores is located outwardly of the pitch circle of the bolts attaching the flanges to the roll body and the heating medium is fed through at least one of the stub shafts to the annular groove and the bores.Type: GrantFiled: January 11, 1994Date of Patent: December 6, 1994Assignee: Walzen Irle GmbHInventors: Gustav Fey, Klaus-Peter Schramm, Ludwig Hellenthal, Berthold Kramer, Walter Patt, Jaxa Von Schweinichen
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Patent number: 4683628Abstract: A calender roller includes a hollow cylindrical roller body which is traversed by a stationary shaft whose outer diameter is smaller than the inner width of the roller body so that a gap is defined therebetween. The opposing end portions of the shaft are provided with rolling bearings to support the roller body and accommodate the channel system for connecting the gap with an inlet and outlet for a thermal transmitting fluid. Provided between the lateral end faces of the gap and the bearings are sealing and fitting members which are movable in axial direction to control the length of the heating zone along the roller body.Type: GrantFiled: January 15, 1986Date of Patent: August 4, 1987Assignee: Walzen-Irle GmbHInventor: Joachim Schonemann
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Patent number: 4658486Abstract: A calender roll comprises a substantially cylindrical roll body formed with a multiplicity of angularly equispaced axial heating passages proximal to a rolling periphery of the body, and a pair of recesses opening axially outwardly at opposite ends thereof, the recesses having bottom surfaces; and respective flange journal stubs formed with end faces defining respective gaps with the bottoms of the recesses. The gaps communicate with the axial passages and at least one of the stubs is provided with an axially extending bore communicating with at least one of the gaps for passing a heating medium through the axial passages. The heating medium is distributed to the axial passages by one of the gaps and is recovered from the axial passages by the other of the gaps.Type: GrantFiled: April 8, 1985Date of Patent: April 21, 1987Assignee: Walzen Irle GmbHInventor: Joachim Schonemann