Patents by Inventor Jurgen Schweikle
Jurgen Schweikle 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: 7981340Abstract: The method of degassing is performed in a ring extruder wherein at least one process chamber is provided with at least one degassing opening. The radius R of the conveyor element in the degassing zone is smaller by ?R than the full radius Rv of the conveyor element required for the mutual stripping of adhering product in a closely intermeshing screw operation with adjacent conveyor elements.Type: GrantFiled: December 7, 2009Date of Patent: July 19, 2011Assignee: Buhler AGInventors: Achim-Phillipp Sturm, Jürgen Schweikle, Andreas Christel, Federico Innerebner
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Publication number: 20100085831Abstract: The method of degassing is performed in a ring extruder wherein at least one process chamber is provided with at least one degassing opening. The radius R of the conveyor element in the degassing zone is smaller by ?R than the full radius Rv of the conveyor element required for the mutual stripping of adhering product in a closely intermeshing screw operation with adjacent conveyor elements.Type: ApplicationFiled: December 7, 2009Publication date: April 8, 2010Inventors: Achim-Phillipp Sturm, Jürgen Schweikle, Andreas Christel, Federico Innerebner
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Patent number: 7654725Abstract: The invention relates to a multiple-screw extruder that comprises a first process chamber (1) and a second process chamber (2). In the degassing zones of said extruder, at least the first process chamber is provided with at least one degassing opening. The radius R of the conveyor element in the degassing zones, in at least one conveyor element (7; 9) of at least one screw (5, 7; 5, 9) configured as a passage screw, in a subsection configured as a passage subsection (71a, 71e; 91a, 91e), along the peripheral direction of the at least one conveyor element (7; 9) is by ?R smaller than the full radius Rv of the conveyor element (6; 8) required for the mutual stripping of adhering product in a closely intermeshing screw operation with die adjacent conveyor elements (6; 8) of adjacent conventional screws (5, 6; 5, 8).Type: GrantFiled: June 13, 2002Date of Patent: February 2, 2010Assignee: Buhler AGInventors: Achim-Phillipp Sturm, Jürgen Schweikle, Andreas Christel, Federico Innerebner
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Patent number: 7080935Abstract: The invention relates to a multi-shaft extruder for the continuous treatment and/or processing of bulk material, especially a powdery, granular or flocculent product, comprising a plurality of shafts (3) which are arranged in a crown-like manner in a cavity (1) of an extruder housing (2), said shafts extending parallel to the axial direction (A) of the extruder and forming an inner processing chamber (1a) inside the crown, and an outer processing chamber (1b) outside the crown. Each shaft carries a number of axially successive processing elements (4), at least part of the same being elements (4a; 4c; 4e) having a transporting effect, and with which adjacent shafts engage in a sealed manner at least in partial regions.Type: GrantFiled: October 2, 2002Date of Patent: July 25, 2006Assignee: Buhler AGInventors: Federico Innerebner, Andreas Christel, Achim-Philipp Sturm, Jürgen Schweikle
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Patent number: 7040798Abstract: The invention relates to a multi-screw extruder for the continuous treatment and/or processing of a bulk material, especially a product in powder, granular or flake form, comprising several shafts (3) which are arranged in a ring shape in a cavity (1) of an extruder housing (2) and which extend parallel to the axial direction (A) of the extruder. The extruder housing (2) is provided with axially parallel, concave segments (5a, 6a) of a circle on the radially inner (5) and radially outer (6) surfaces of the cavity (1). These circle segments act as a guide for the axially parallel shafts (3) with their processing elements (4) on the inside (5) or on the outside (6) of the shaft ring (3, . . . ). The inventive improvement lies in the radial extension of the axial partial area of the cavity (1) containing the shafts (3), which is located in the area of the feed opening (9), this radial extension (10b) extending along part of the shaft ring (3, . . . ) in the peripheral direction (U) of the same.Type: GrantFiled: July 9, 2001Date of Patent: May 9, 2006Assignee: Buhler AGInventors: Federico Innerebner, Achim Philipp Sturm, Jürgen Schweikle
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Publication number: 20050248052Abstract: A method is disclosed wherein synthetic materials and elastomers (e.g., PET or rubber) can be carefully processed with throughput amounts which are so high as to improve the quality of the final product and increase the cost-effectiveness 0of the entire process. Process tasks such as mixing, cooling/heating (heat exchange) and de-gassing (exchange of materials) can be carried out simultaneously and with greater efficiency.Type: ApplicationFiled: June 22, 2005Publication date: November 10, 2005Inventors: Achim-Philipp Sturm, Jurgen Schweikle, Andreas Christel, Christoph Naf, Federico Innerebner
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Publication number: 20050105382Abstract: The invention relates to a multiple-screw extruder that comprises a first process chamber (1) and a second process chamber (2). In the degassing zones of said extruder, at least the first process chamber is provided with at least one degassing opening. The radius R of the conveyor element in the degassing zones, in at least one conveyor element (7; 9) of at least one screw (5, 7; 5, 9) configured as a passage screw, in a subsection configured as a passage subsection (71a, 71e; 91a, 91e), along the peripheral direction of the at least one conveyor element (7; 9) is by ?R smaller than the full radius Rv of the conveyor element (6; 8) required for the mutual stripping of adhering product in a closely intermeshing screw operation with die adjacent conveyor elements (6; 8) of adjacent conventional screws (5, 6; 5, 8).Type: ApplicationFiled: June 13, 2002Publication date: May 19, 2005Applicant: BUHLER AGInventors: Achim-Phillipp Sturm, Jurgen Schweikle, Andreas Christel, Federico Innerebner
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Patent number: 6841656Abstract: A method for processing a polycondensate to give a granulate formed as pellets is disclosed, whereby the polycondensate is fused in the course of the method and then later resolidified. In an exemplary method, a total time during which the temperature of the polycondensate is above the melting point thereof is less than about 60 seconds. This method can be carried out by a multi-shaft extruder, whereby the degrassing and/or drying of the polycondensate in the solid state occurs at a pressure below atmospheric pressure and/or with addition of an inert gas. The time period, during which the polycondensate remains in the extruder, after being melted therein, amounts to, for example, less than about 15 seconds.Type: GrantFiled: May 2, 2003Date of Patent: January 11, 2005Assignee: Buhler AGInventors: Andreas Christel, Jürgen Schweikle
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Publication number: 20050001350Abstract: The invention relates to a multi-shaft extruder for the continuous treatment and/or processing of bulk material, especially a powdery, granular or flocculent product, comprising a plurality of shafts (3) which are arranged in a crown-like manner in a cavity (1) of an extruder housing (2), said shafts extending parallel to the axial direction (A) of the extruder and forming an inner processing chamber (1a) inside the crown, and an outer processing chamber (1b) outside the crown. Each shaft carries a number of axially successive processing elements (4), at least part of the same being elements (4a; 4c; 4e) having a transporting effect, and with which adjacent shafts engage in a sealed manner at least in partial regions.Type: ApplicationFiled: October 2, 2002Publication date: January 6, 2005Inventors: Federico Innerebner, Andreas Christel, Achim-Philipp Sturm, Jurgen Schweikle
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Publication number: 20040262807Abstract: A method is disclosed wherein synthetic materials and elastomers (e.g., PET or rubber) can be carefully processed with throughput amounts which are so high as to improve the quality of the final product and increase the cost-effectiveness of the entire process. Process tasks such as mixing, cooling/heating (heat exchange) and de-gasing (exchange of materials) can be carried out simultaneously and with greater efficiency.Type: ApplicationFiled: March 10, 2004Publication date: December 30, 2004Applicant: BUHLER, AGInventors: Achim-Philipp Sturm, Jurgen Schweikle, Andreas Christel, Christoph Naf, Federico Innerebner
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Publication number: 20040027911Abstract: The invention relates to a multi-screw extruder for the continuous treatment and/or processing of a bulk material, especially a product in powder, granular or flake form, comprising several shafts (3) which are arranged in a ring shape in a cavity (1) of an extruder housing (2) and which extend parallel to the axial direction (A) of the extruder. The extruder housing (2) is provided with axially parallel, concave segments (5a, 6a) of a circle on the radially inner (5) and radially outer (6) surfaces of the cavity (1). These circle segments act as a guide for the axially parallel shafts (3) with their processing elements (4) on the inside (5) or on the outside (6) of the shaft ring (3 . . . ). The inventive improvement lies in the radial extension of the axial partial area of the cavity (1) containing the shafts (3), which is located in the area of the feed opening (9), this radial extension (10b) extending along part of the shaft ring (3, . . . ) in the peripheral direction (U) of the same.Type: ApplicationFiled: August 18, 2003Publication date: February 12, 2004Inventors: Federico Innerebner, Achim Sturm, Jurgen Schweikle
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Publication number: 20040006195Abstract: A method for processing a polycondensate to give a granulate formed as pellets is disclosed, whereby the polycondensate is fused in the course of the method and then later resolidified. In an exemplary method, a total time during which the temperature of the polycondensate is above the melting point thereof is less than about 60 seconds. This method can be carried out by a multi-shaft extruder, whereby the degrassing and/or drying of the polycondensate in the solid state occurs at a pressure below atmospheric pressure and/or with addition of an inert gas. The time period, during which the polycondensate remains in the extruder, after being melted therein, amounts to, for example, less than about 15 seconds.Type: ApplicationFiled: May 2, 2003Publication date: January 8, 2004Applicant: Buhler, AGInventors: Andreas Christel, Jurgen Schweikle