Patents by Inventor Vesa-Matti Riihioja

Vesa-Matti Riihioja 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: 11952452
    Abstract: A process produces a body of a belt (10) for a paper, board, pulp or tissue machine, the body having an inner surface and an outer surface. The process includes producing a modified polyurethane by adding a polydialkylsiloxane having at least one functional group to a manufacturing process of a polyurethane in order to obtain the modified polyurethane, which modified polyurethane is a polyurethane matrix having a covalent bond with the polydialkylsiloxane, and forming the body of the belt, wherein the body is the modified polyurethane. The belt (10) is for a paper, board, pulp, or tissue machine, or for a shoe press and a sleeve roll.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: April 9, 2024
    Assignee: Valmet Technologies Oy
    Inventor: Vesa-Matti Riihioja
  • Patent number: 11725344
    Abstract: A belt (10) for a sleeve roll forms a closed loop and has an inner surface (11), an outer surface (12), an elastic body (15), and a reinforcing structure (30). The reinforcing structure has first yarns (31a) arranged to a first direction (D1) of the belt, and second yarns (32a) arranged to a second direction (D2) of the belt which is parallel or substantially parallel to a travel direction of the belt, and/or perpendicular or substantially perpendicular to the first direction (D1). The belt (10) is configured to stretch elastically more in the second direction (D2) than in the first direction (D1) so that it will return to its original length after forces stretching the belt have been removed. This invention further relates to an arrangement including a belt and a sleeve roll. This invention further relates to a use of a belt.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: August 15, 2023
    Assignee: VALMET TECHNOLOGIES OY
    Inventors: Satu Hagfors, Vesa-Matti Riihioja
  • Publication number: 20230250583
    Abstract: This invention relates to a method for manufacturing a belt for a paper, board, pulp or tissue machine, the belt (5) comprising a body (14), and a reinforcing structure (31, 32), the belt (5) having an inner surface (10) and an outer surface (11), wherein the method comprises: applying a coating comprising a solid lubricant on to a casting cylinder (18), drying the coating comprising the solid lubricant, thereby obtaining solid lubricant particles (29) on the casting cylinder (18), casting a body material (21) onto the casting cylinder (18) in order to form the body (14) on the solid lubricant particles, and providing the reinforcement structure (31, 32) into the belt, thereby obtaining the belt in which the solid lubricant particles forms at least part of the inner surface of the belt. This invention relates to an arrangement for manufacturing a belt for a paper, board, pulp or tissue machine. The invention further relates to a belt for a paper, board, pulp, or tissue machine.
    Type: Application
    Filed: February 2, 2023
    Publication date: August 10, 2023
    Applicant: Valmet Technologies Oy
    Inventor: Vesa-Matti Riihioja
  • Publication number: 20230097651
    Abstract: A process produces a body of a belt (10) for a paper, board, pulp or tissue machine, the body having an inner surface and an outer surface. The process includes producing a modified polyurethane by adding a polydialkylsiloxane having at least one functional group to a manufacturing process of a polyurethane in order to obtain the modified polyurethane, which modified polyurethane is a polyurethane matrix having a covalent bond with the polydialkylsiloxane, and forming the body of the belt, wherein the body is the modified polyurethane. The belt (10) is for a paper, board, pulp, or tissue machine, or for a shoe press and a sleeve roll.
    Type: Application
    Filed: September 29, 2022
    Publication date: March 30, 2023
    Applicant: Valmet Technologies Oy
    Inventor: Vesa-Matti Riihioja
  • Patent number: 11377795
    Abstract: A shoe press belt (10) for a shoe press has an inner surface (11), an outer surface (12), an elastomer body and a support structure (20, 21, 22, 23) for the elastomer body. A plurality of parallel dewatering grooves (50, 50a, 50b) are on the outer surface (12) of the shoe press belt (10), with a ridges (53) provided between two adjacent dewatering grooves (50a, 50b). The dewatering grooves (50, 50a, 50b) have a first wall (60), a second wall (70), and a bottom (80) therebetween. At least the first wall (60) of the dewatering groove (50, 50a, 50b) has a plurality of parallel auxiliary grooves (100, 100a, 100b). A paper, board or pulp drying machine has said shoe press belt (10). A method for installing the shoe press belt (10) is provided.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: July 5, 2022
    Assignee: VALMET TECHNOLOGIES OY
    Inventors: Jari Jännetyinen, Vesa-Matti Riihioja
  • Publication number: 20210363698
    Abstract: A belt (10) for a sleeve roll forms a closed loop and has an inner surface (11), an outer surface (12), an elastic body (15), and a reinforcing structure (30). The reinforcing structure has first yarns (31a) arranged to a first direction (D1) of the belt, and second yarns (32a) arranged to a second direction (D2) of the belt which is parallel or substantially parallel to a travel direction of the belt, and/or perpendicular or substantially perpendicular to the first direction (D1). The belt (10) is configured to stretch elastically more in the second direction (D2) than in the first direction (D1) so that it will return to its original length after forces stretching the belt have been removed. This invention further relates to an arrangement including a belt and a sleeve roll. This invention further relates to a use of a belt.
    Type: Application
    Filed: May 19, 2021
    Publication date: November 25, 2021
    Applicant: Valmet Technologies Oy
    Inventors: Satu Hagfors, Vesa-Matti Riihioja
  • Publication number: 20210340707
    Abstract: A shoe press belt (10) for a shoe press has an inner surface (11), an outer surface (12), an elastomer body and a support structure (20, 21, 22, 23) for the elastomer body. A plurality of parallel dewatering grooves (50, 50a, 50b) are on the outer surface (12) of the shoe press belt (10), with a ridges (53) provided between two adjacent dewatering grooves (50a, 50b). The dewatering grooves (50, 50a, 50b) have a first wall (60), a second wall (70), and a bottom (80) therebetween. At least the first wall (60) of the dewatering groove (50, 50a, 50b) has a plurality of parallel auxiliary grooves (100, 100a, 100b). A paper, board or pulp drying machine has said shoe press belt (10). A method for installing the shoe press belt (10) is provided.
    Type: Application
    Filed: December 17, 2019
    Publication date: November 4, 2021
    Applicant: Valmet Technologies Oy
    Inventors: Jari Jännetyinen, Vesa-Matti Riihioja
  • Patent number: 8986506
    Abstract: A shoe press belt, and a method for manufacturing and using it. The press belt comprises a base formed of heat-resistant elastomer, inside which base there is a support structure comprising a plurality of support yarns. At least some of the support yarns are heat-resistant polymer yarns, the polymer structure of the material of which comprises a naphthalene group.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: March 24, 2015
    Assignee: Valmet Technologies, Inc.
    Inventor: Vesa-Matti Riihioja
  • Patent number: 8568567
    Abstract: The invention relates to a shoe press belt comprising polyurethane polymer prepared of a urethane prepolymer containing isocyanate groups and a chain extender, the urethane prepolymer being prepared using 1,4-phenylene-diisocyanate (PPDI) and the chain extender comprising methyl-bis(3-chloro-2,6-diethylaniline) (MCDEA).
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: October 29, 2013
    Assignee: Metso Fabrics Inc.
    Inventors: Satu Hagfors, Vesa-Matti Riihioja, Marja Ojanen
  • Publication number: 20130269895
    Abstract: A shoe press belt, and a method for manufacturing and using it. The press belt comprises a base formed of heat-resistant elastomer, inside which base there is a support structure comprising a plurality of support yarns. At least some of the support yarns are heat-resistant polymer yarns, the polymer structure of the material of which comprises a naphthalene group.
    Type: Application
    Filed: January 30, 2012
    Publication date: October 17, 2013
    Applicant: METSO FABRICS INC.
    Inventor: Vesa-Matti Riihioja
  • Publication number: 20120132384
    Abstract: The invention relates to a shoe press belt comprising polyurethane polymer prepared of a urethane prepolymer containing isocyanate groups and a blend of chain extenders, the urethane prepolymer being prepared using 1,4-phenyIene-diisocyanate (PPDI) and the blend of chain extenders comprising methyl-bis(3-chloro-2,6-diethyl-aniline) (MCDEA).
    Type: Application
    Filed: December 10, 2009
    Publication date: May 31, 2012
    Applicant: METSO FABRICS INC.
    Inventors: Satu Hagfors, Vesa-Matti Riihioja, Marja Ojanen
  • Publication number: 20020153296
    Abstract: A fastening strip for fastening a filter cloth against the filter surface of a solid-liquid separator. The solid-liquid separator comprises at least one filter element provided with a fastening groove for the fastening strip. The filter cloth is fastened to the filter element by means of the fastening strip, whose fastening portion is inserted into the fastening groove. The fastening strip is an elongated piece having a substantially T-shaped cross section and comprising a fastening portion and a support portion transverse to the fastening portion. The support portion provides a protective edging that extends to a distance from the edges of the fastening groove.
    Type: Application
    Filed: April 18, 2001
    Publication date: October 24, 2002
    Inventors: Matti Servo, Anssi Rantala, Vesa-Matti Riihioja
  • Patent number: D466601
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: December 3, 2002
    Assignee: Tamfelt Oyj Abp
    Inventors: Matti Servo, Anssi Rantala, Vesa-Matti Riihioja