Patents by Inventor Marko Loijas
Marko Loijas 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: 11891758Abstract: A blade element pair (20) for a refiner (1, 2, 3) is intended for refining fibrous material. Each blade element (5, 5?, 8, 8?) of the blade element pair (20) has a refining surface (6, 9) with blade bars (16, 18) and blade grooves (17, 19) extending along the blade element (5, 5?, 8, 8?), and openings (14,15) extending through the blade element (5, 5?, 8, 8?). The openings (14, 15) in one of the blade elements (5, 5?, 8, 8?) is at different axial (A) or radial (R) positions from the openings (14,15) in the other blade element (5, 5?, 8, 8?) when the blade elements (5, 5?, 8, 8?) of the blade element pair (20) are set substantially opposite to each other.Type: GrantFiled: August 27, 2020Date of Patent: February 6, 2024Assignee: Valmet Technologies OyInventors: Juha-Pekka Huhtanen, Marko Loijas
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Publication number: 20230243098Abstract: A blade segment (4, 4a, 4b, 8, 8a, 8b) for a refiner (1) for refining fibrous material has first (20) and second (21) end edges and first (22) and second (23) side edges, the first (22) and second (23) side edges extending between the first (20) and second (21) end edges. The segment has a refining surface (5, 9) with blade bars (27) and grooves (28) on the segment front surface (25). At least one opening (14, 15) at the side edge (22, 23) extends through the whole thickness of the segment body (24) and towards the opposite side edge (22, 23). A guide element projects from the segment background surface (26) at the side edge which provides a guide surface that intensifies the feed of the material to be refined through the opening to the refining surface of the blade segment into the refining chamber of the refiner.Type: ApplicationFiled: June 7, 2021Publication date: August 3, 2023Applicant: Valmet Technologies OyInventors: Marko Loijas, Matti Kaarineve
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Publication number: 20230228033Abstract: A blade segment (4, 8) for a refiner (1) for refining fibrous material has first (20) and second (21) end edges opposite one another in a direction of a longitudinal axis (LA) of the blade segment (4, 4a, 4b, 8, 8a, 8b), and first (22) and second (23) side edges which extend between the first end edge and the second end edge. The blade segment has a refining surface (5, 9) with blade bars (26) and grooves (27) therebetween on a front surface (25) of the blade segment (4, 8). At least one side edge (22, 23) has at least two edge portions (31, 33, 35, 41, 43, 45) arranged to deviate from the direction of the longitudinal axis (LA) of the blade segment (4, 4a, 4b, 8; 8a, 8b) and connected by an elbow (32, 34, 42, 44) between each two edge portions (31, 33, 35, 41, 43, 45).Type: ApplicationFiled: June 2, 2021Publication date: July 20, 2023Applicant: Valmet Technologies OyInventors: Marko Loijas, Tomi Iisakkila, Håkan Sjöström
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Publication number: 20230220624Abstract: A blade segment (4, 8) for a refiner (1) for refining fibrous material has a first (20) and a second (21) end edge and a first (22) and a second (23) side edge opposite to the first side edge (22) and a refining surface (5, 9) having blade bars (27, 27a, 27b) and grooves (28, 28a, 28b) therebetween on a front surface (25). At least one opening (14, 15) is on at least at one side edge (22, 23) which extends through the whole thickness of the blade segment body (24). There is at least one feed groove (29) on the refining surface, the feed groove (29) extending from the opening and crossing the blade bars and the blade grooves for feeding the material to be refined across the refining surface. The blade bars (27, 27a, 27b) of the blade segment are interlaced at the feed groove.Type: ApplicationFiled: June 3, 2021Publication date: July 13, 2023Applicant: Valmet Technologies OyInventors: Marko Loijas, Tomi Iisakkila
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Publication number: 20230183921Abstract: A blade element (4, 8) for a refiner (1) for refining fibrous material has a first end edge (18) to be directed towards a feed of the fibrous material to be refined and a second end edge (19) to be directed towards a discharge of the refined fibrous material and a refining surface (5, 9) comprising blade bars (16) and blade grooves (17) therebetween. The refining surface (5, 9) has at least one equalizing pocket (23) extending along the refining surface (5, 9) of the blade element (4, 8) and crossing a number of the blade bars (16) and a number of the blade grooves (17) for equalizing flow of the fibrous material along the refining surface (5,9).Type: ApplicationFiled: May 12, 2021Publication date: June 15, 2023Applicant: VALMET TECHNOLOGIES OYInventors: Marko Loijas, Ville Ruola
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Patent number: 11142869Abstract: A blade segment (4, 8, 8a, 8b) for a refiner comprises an inner end edge (20) and an outer end edge (21) and a first side edge (22) and a second side edge (23) opposite to the first side edge (22), the first side edge (22) and the second side edge (23) extending between the inner end edge (20) and the outer end edge (21), and a refining surface (29) comprising blade bars (27) and blade grooves (28) therebetween on a front surface (25) of the blade segment (4, 8, 8a, 8b). At least one side edge (22, 23) of the blade segment (4, 8, 8a, 8b) comprises at least one opening (14a, 14b, 14c, 14d, 14e, 14f, 14g) that extends from the side edge (22, 23) toward the opposite side edge (22, 23).Type: GrantFiled: May 10, 2018Date of Patent: October 12, 2021Assignee: VALMET TECHNOLOGIES, INC.Inventors: Håkan Sjöström, Marko Loijas, Matti Kaarineva, Tomi Iisakkila, Markku Partanen
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Publication number: 20210062422Abstract: A blade element pair (20) for a refiner (1, 2, 3) is intended for refining fibrous material. Each blade element (5, 5?, 8, 8?) of the blade element pair (20) has a refining surface (6, 9) with blade bars (16, 18) and blade grooves (17, 19) extending along the blade element (5, 5?, 8, 8?), and openings (14,15) extending through the blade element (5, 5?, 8, 8?). The openings (14, 15) in one of the blade elements (5, 5?, 8, 8?) is at different axial (A) or radial (R) positions from the openings (14,15) in the other blade element (5, 5?, 8, 8?) when the blade elements (5, 5?, 8, 8?) of the blade element pair (20) are set substantially opposite to each other.Type: ApplicationFiled: August 27, 2020Publication date: March 4, 2021Applicant: Valmet Technologies OyInventors: Juha-Pekka Huhtanen, Marko Loijas
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Patent number: 10464068Abstract: A blade element (12) for a refiner (10, 11) for refining fibrous material has an inner edge (13) and an outer edge (14) and first blade bars (18) and first blade grooves (19) therebetween, the first blade bars and the first blade grooves extending toward the outer edge of the blade element. At top surfaces of the first blade bars there are second blade bars (20) and second blade grooves (21) therebetween. At least some of the second blade bars (20) lying on an outer end portion (12b) of the blade element (12) have a width which is larger than a width of second blade bars (20) lying on an inner end portion (12a) of the blade element (12) and/or is increasing in direction toward the outer edge (14) of the blade element (12).Type: GrantFiled: October 23, 2015Date of Patent: November 5, 2019Assignee: VALMET TECHNOLOGIES OYInventors: Håkan Sjöström, Matti Kaarineva, Tomi Iisakkila, Marko Loijas, Marcus Sjölund, Karl Lönngren
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Patent number: 10300489Abstract: A blade element (11) for a refiner (10) for refining fibrous material has a blade element body (12) and blade bars (13, 13a, 13b) and blade grooves (14, 14a, 14b) therebetween. Bottoms of the blade grooves (14, 14a, 14b) have, in the longitudinal direction (LD) of the blade grooves, a variable depth profile comprising alternating high points (14a?, 14b?) and low points (14a?, 14b?) so that there is a phase shift (X2) between the high points (14a?, 14b?) and the low points (14a?, 14b?) of the variable depth profiles of the bottoms of the adjacent blade grooves (14a, 14b). Also, a refiner (10) for refining fibrous material and a method for manufacturing the blade element (11) for the refiner (1).Type: GrantFiled: June 29, 2015Date of Patent: May 28, 2019Assignee: Valmet Technologies, Inc.Inventors: Marko Loijas, Timo Könönen, Matti Kaarineva
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Publication number: 20180327970Abstract: A blade segment (4, 8, 8a, 8b) for a refiner comprises an inner end edge (20) and an outer end edge (21) and a first side edge (22) and a second side edge (23) opposite to the first side edge (22), the first side edge (22) and the second side edge (23) extending between the inner end edge (20) and the outer end edge (21), and a refining surface (29) comprising blade bars (27) and blade grooves (28) therebetween on a front surface (25) of the blade segment (4, 8, 8a, 8b). At least one side edge (22, 23) of the blade segment (4, 8, 8a, 8b) comprises at least one opening (14a, 14b, 14c, 14d, 14e, 14f, 14g) that extends from the side edge (22, 23) toward the opposite side edge (22, 23).Type: ApplicationFiled: May 10, 2018Publication date: November 15, 2018Applicant: Valmet Technologies, Inc.Inventors: Håkan Sjöström, Marko Loijas, Matti Kaarineva, Tomi Iisakkila, Markku Partanen
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Publication number: 20170320063Abstract: A blade element (12) for a refiner (10, 11) for refining fibrous material comprises an inner edge (13) and an outer edge (14) and first blade bars (18) and first blade grooves (19) therebetween, the first blade bars and the first blade grooves extending toward the outer edge of the blade element. At top surfaces of the first blade bars there are second blade bars (20) and second blade grooves (21) therebetween. At least some of the second blade bars (20) lying on an outer end portion (12b) of the blade element (12) have a width which is larger than a width of second blade bars (20) lying on an inner end portion (12a) of the blade element (12) and/or is increasing in direction toward the outer edge (14) of the blade element (12).Type: ApplicationFiled: October 23, 2015Publication date: November 9, 2017Applicant: VALMET TECHNOLOGIES OYInventors: Håkan Sjöström, Matti Kaarineva, Tomi Iisakkila, Marko Loijas, Marcus Sjölund, Karl Lönngren
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Publication number: 20150375232Abstract: A blade element (11) for a refiner (10) for refining fibrous material has a blade element body (12) and blade bars (13, 13a, 13b) and blade grooves (14, 14a, 14b) therebetween. Bottoms of the blade grooves (14, 14a, 14b) have, in the longitudinal direction (LD) of the blade grooves, a variable depth profile comprising alternating high points (14a?, 14b?) and low points (14a?, 14b?) so that there is a phase shift (X2) between the high points (14a?, 14b?) and the low points (14a?, 14b?) of the variable depth profiles of the bottoms of the adjacent blade grooves (14a, 14b). Also, a refiner (10) for refining fibrous material and a method for manufacturing the blade element (11) for the refiner (1).Type: ApplicationFiled: June 29, 2015Publication date: December 31, 2015Applicant: Valmet Technologies, Inc.Inventors: Marko Loijas, Timo Könönen, Matti Kaarineva