Patents by Inventor Rauno Enqvist
Rauno Enqvist 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: 11965272Abstract: An industrial textile has a double warp. Yarns (111, 112) of a first warp and yarns (131, 132, 133, 134) of a weft are bonded to each other according to a first predetermined pattern, and yarns (121, 122) of a second warp and the yarns (131, 132, 133, 134) of the weft are bonded to each other according to a second predetermined pattern. The first predetermined pattern and the second predetermined pattern form a textile structure, which includes the yarns (131, 132) of the weft on a first level (L1) and the yarns (133, 134) of the weft on a second level (L2). The yarns of the weft having smaller diameter are configured to alternate with yarns of the weft having a larger diameter on the first level (L1).Type: GrantFiled: October 3, 2022Date of Patent: April 23, 2024Assignee: Valmet Technologies, Inc.Inventor: Rauno Enqvist
-
Publication number: 20230105047Abstract: An industrial textile has a double warp. Yarns (111, 112) of a first warp and yarns (131, 132, 133, 134) of a weft are bonded to each other according to a first predetermined pattern, and yarns (121, 122) of a second warp and the yarns (131, 132, 133, 134) of the weft are bonded to each other according to a second predetermined pattern. The first predetermined pattern and the second predetermined pattern form a textile structure, which includes the yarns (131, 132) of the weft on a first level (L1) and the yarns (133, 134) of the weft on a second level (L2). The yarns of the weft having smaller diameter are configured to alternate with yarns of the weft having a larger diameter on the first level (L1).Type: ApplicationFiled: October 3, 2022Publication date: April 6, 2023Applicant: Valmet Technologies, Inc.Inventor: Rauno Enqvist
-
Publication number: 20220389618Abstract: A monofilament yarn (10) has a polygon cross-section having a width and a height, which width is greater than the height, and four corners (11, 12, 13, 14) of which the first two opposite corners (11, 13) have angles of over 90 degrees, and the second two opposite corners (12, 14) have angles under 90 degrees, said width being 0.1 to 3 mm. The rounded first two opposite corners have a radius of 0.1 to 0.15 mm, and the rounded second two opposite corners have a radius of 0.075 to 0.1 mm. The yarn may be used to fabricate an industrial textile, which may be a papermaking fabric such as a dryer fabric or a forming fabric, or a filter fabric, such as a disc filter, a horizontal vacuum belt filter, a belt filter press, a twin wire press, a drum filter, a pan filter, a gravity table or a filter press.Type: ApplicationFiled: June 2, 2022Publication date: December 8, 2022Applicant: Valmet Technologies, Inc.Inventors: Rauno Enqvist, Hannu Martikainen, Juha Paavolainen
-
Patent number: 11512430Abstract: A dryer fabric has a weft of cross machine direction yarns (6) and a first warp of first machine direction yarns (5) and a second warp of second machine direction yarns (9). The yarns of the first warp are arranged above the yarns of the second warp on a first surface (FS) side. The first warp has primary yarns (51) of PPS or PK yarns whose breaking load remains substantially stable within 15 days in conditions where RH=100%, T=125° C. and p=2.3 bar; and secondary yarns (52) of PET with breaking loads which substantially decrease under the same conditions. At least every second yarn of the first warp is a secondary yarn (52). The secondary yarns (52) may be two out of three or three out of four of the first machine direction yarns (5). PET reduces cost and adds elasticity to the dryer fabric.Type: GrantFiled: October 2, 2020Date of Patent: November 29, 2022Assignee: VALMET TECHNOLOGIES OYInventor: Rauno Enqvist
-
Patent number: 10982356Abstract: An industrial textile (1) having a longitudinal direction (MD) and a cross direction (CMD) and a first surface and a second surface, the industrial textile (1) extending in the cross direction from a first edge (E1) to a second edge (E2). The industrial textile (1) has a double warp which comprises a first warp having first machine direction yarns (U1, U2) and a second warp having second machine direction yarns (LI, L2). The yarns (U1, U2) of the first warp are arranged above the yarns (LI, L2) of the second warp and the yarns of the first warp are at least partially offset in respect of the yarns of the second warp. The industrial textile has a weft having cross machine direction yarns (W1, W2, W3, W4).Type: GrantFiled: March 21, 2018Date of Patent: April 20, 2021Assignee: VALMET TECHNOLOGIES OYInventors: Rauno Enqvist, Juha Paavolainen
-
Publication number: 20210102339Abstract: A dryer fabric has a weft of cross machine direction yarns (6) and a first warp of first machine direction yarns (5) and a second warp of second machine direction yarns (9). The yarns of the first warp are arranged above the yarns of the second warp on a first surface (FS) side. The first warp has primary yarns (51) of PPS or PK yarns whose breaking load remains substantially stable within 15 days in conditions where RH=100%, T=125° C. and p=2.3 bar; and secondary yarns (52) of PET with breaking loads which substantially decrease under the same conditions. At least every second yarn of the first warp is a secondary yarn (52). The secondary yarns (52) may be two out of three or three out of four of the first machine direction yarns (5). PET reduces cost and adds elasticity to the dryer fabric.Type: ApplicationFiled: October 2, 2020Publication date: April 8, 2021Applicant: Valmet Technologies OyInventor: Rauno Enqvist
-
Patent number: 10633793Abstract: An industrial fabric is formed of several machine direction (MD) yarns and several cross machine direction (CMD) yarns. The MD-yarns are twisted relative their longitudinal axis so that the twisted yarns have sloped surfaces at least on a web side surface (P) of the textile. The textile is usable in paper machine, pulp machine or filtering machine.Type: GrantFiled: February 17, 2017Date of Patent: April 28, 2020Assignee: VALMET TECHNOLOGIES OYInventors: Rauno Enqvist, Juha Paavolainen
-
Publication number: 20190382928Abstract: The present invention relates to an industrial textile (1) having a longitudinal direction (MD) and a cross direction (CMD) and a first surface and a second surface, the industrial textile (1) extending in the cross direction from a first edge (E1) to a second edge (E2). The industrial textile (1) comprises a double warp which comprises a first warp comprising first machine direction yarns (U1, U2) and a second warp comprising second machine direction yarns (L1, L2). The yarns (U1, U2) of the first warp are arranged in above the yarns (L1, L2) of the second warp and the yarns of the first warp are at least partially offset in respect of the yarns of the second warp. The industrial textile comprises a weft comprising cross machine direction yarns (W1, W2, W3, W4).Type: ApplicationFiled: March 21, 2018Publication date: December 19, 2019Inventors: Rauno ENQVIST, Juha PAAVOLAINEN
-
Publication number: 20190040579Abstract: The invention relates to an industrial fabric and its use. The industrial fabric (1) comprises several machine direction (MD) yarns (2, 2a, 2b) and several cross machine direction (CMD) yarns (3). The MD-yarns are twisted relative their longitudinal axis so that the twisted yams have sloped surfaces (4) at least on a web side surface (P) of the textile. The textile is usable in paper machine, pulp machine or filtering machine.Type: ApplicationFiled: February 17, 2017Publication date: February 7, 2019Inventors: Rauno ENQVIST, Juha PAAVOLAINEN
-
Publication number: 20170275823Abstract: The invention relates to a dryer fabric, which is woven of machine direction yarns (2) and cross machine direction yarns (3). The machine direction yarns (2) have free long float above at least seven cross machine yarns on a paper side (P) of the dryer fabric (1). Further, the fabric has double cloth structure having machine direction yarns in two successive layers (2a, 2b).Type: ApplicationFiled: March 18, 2016Publication date: September 28, 2017Inventors: Rauno Enqvist, Aira Liitola
-
Patent number: 8080136Abstract: A drying wire provided with an independent top fabric and bottom fabric. The bottom fabric is woven from longitudinal and cross direction monofilament yarns. The top fabric is woven from longitudinal yarns and shapeable cross direction yarns. The shapeable yarns make the structure of the top fabric denser and increase the contact surface area and the number of contact points. On the other hand, the bottom fabric is also smooth, wherefore it has good aerodynamic properties.Type: GrantFiled: April 24, 2007Date of Patent: December 20, 2011Assignee: Metso Fabrics OyInventors: Rauno Enqvist, Marja Ojanen
-
Patent number: 7624767Abstract: A dryer fabric and a seam area of a dryer fabric. The basic structure of the dryer fabric having at least two superposed machine direction yarn systems. Some yarns of a paper side machine direction yarn system form seam loops at connecting ends and some of the paper side machine direction yarns form an edge of the seam area. All the machine direction yarns of the paper side system make a backward turn at the connecting end and they are fastened off on the backside. The paper side machine direction yarns are cut at a cutting point. Cutting points form a fasten-off row. Yarns that form seam loops are fastened off in a first fasten-off row and yarns that form an edge of the seam area are fastened off in one or more second fasten-off row. One fasten-off row is situated at the beginning line of the seam area.Type: GrantFiled: March 10, 2008Date of Patent: December 1, 2009Assignee: Tamfelt PMC OyInventors: Rauno Enqvist, Aira Liitola
-
Publication number: 20090159148Abstract: A drying wire provided with an independent top fabric and bottom fabric. The bottom fabric is woven from longitudinal and cross direction monofilament yarns. The top fabric is woven from longitudinal yarns and shapeable cross direction yarns. The shapeable yarns make the structure of the top fabric denser and increase the contact surface area and the number of contact points. On the other hand, the bottom fabric is also smooth, wherefore it has good aerodynamic properties.Type: ApplicationFiled: April 24, 2007Publication date: June 25, 2009Applicant: TAMFELT PMC OYInventors: Rauno Enqvist, Marja Ojanen
-
Patent number: 6742548Abstract: A dryer screen, which is woven of flat machine direction threads and round cross-machine direction threads. After weaving the fabric is subjected to heat treatment, and as a result of the strong shrinkage of the weft threads the adjacent warp threads are overlapping in relation to one another on the paper side.Type: GrantFiled: October 25, 2002Date of Patent: June 1, 2004Assignee: Tamfelt OYJ ABPInventor: Rauno Enqvist
-
Publication number: 20030066935Abstract: A dryer screen, which is woven of flat machine direction threads and round cross-machine direction threads. After weaving the fabric is subjected to heat treatment, and as a result of the strong shrinkage of the weft threads the adjacent warp threads are overlapping in relation to one another on the paper side.Type: ApplicationFiled: October 25, 2002Publication date: April 10, 2003Applicant: TAMFELT OYJ ABPInventor: Rauno Enqvist