Patents by Inventor Pekka Ruha

Pekka Ruha 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: 7757990
    Abstract: In a reel change in the reeling process of a fiber material web, the fiber material web (W) running to a reel that is becoming full is changed to run around a new reeling core (2) brought to a reel change position in such a way that the web is made to adhere onto the surface of the new reeling core (2). The web (W) is made to adhere onto the surface of the reeling core (2) by a change in the properties of the material on the surface of the reeling core (2). The material is a combination of an adhesive area (6a) on the surface of the reeling core and a protective layer (6b) on top of the adhesive area, and the properties of the material are changed by removing the protective layer (6b).
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: July 20, 2010
    Assignee: Metso Paper, Inc.
    Inventors: Jari Tiitta, Pekka Ruha, Topi Tynkkynen, Tatu Pitkänen, Petteri Lannes, Teppo Kojo, Hannu Kasula, Matti Kemppainen
  • Publication number: 20080149757
    Abstract: In a reel change in the reeling process of a fiber material web, the fiber material web (W) running to a reel that is becoming full is changed to run around a new reeling core (2) brought to a reel change position in such a way that the web is made to adhere onto the surface of the new reeling core (2). The web (W) is made to adhere onto the surface of the reeling core (2) by a change in the properties of the material on the surface of the reeling core (2). The material is a combination of an adhesive area (6a) on the surface of the reeling core and a protective layer (6b) on top of the adhesive area, and the properties of the material are changed by removing the protective layer (6b).
    Type: Application
    Filed: February 3, 2006
    Publication date: June 26, 2008
    Applicant: METSO PAPER, INC.
    Inventors: Jari Tiitta, Pekka Ruha, Topi Tynkkynen, Tatu Pitkanen, Petteri Lannes, Teppo Kojo, Hannu Kasula, Matti Kemppainen
  • Patent number: 6964394
    Abstract: The invention relates to a method for reeling of a web, in which the web is reeled around a reel spool. In the invention, the reel spool rests and/or it is supported substantially during the entire “nip closed” reeling process of the reeling device, substantially in its position with respect to the same supporting surface.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: November 15, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Jarkko Räty, Jussi Lundberg, Pekka Ruha
  • Patent number: 6550713
    Abstract: A device for use in a reel-up of a paper web, the reel-up including a reeling cylinder mounted on bearings to guide a web on to a reeling axle. The device includes an actuator and a control member for setting and controlling the distance between the reeling cylinder and the reeling axle. The device further includes an actuator and a control member for effectuating and maintaining a force effect between the reeling cylinder and the reeling axle.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: April 22, 2003
    Assignee: Metso Paper, Inc.
    Inventors: Pekka Ruha, Jarkko Räty
  • Patent number: 6293175
    Abstract: A web cut-off device including a frame defining a piston chamber, a piston movable in the piston chamber, a cutter blade attached to the piston such that upon movement of the piston in a first direction, the cutter blade is adapted to engage and cut a web, at least one pressure chamber and lower connecting ducts for connecting the pressure chamber(s) to a lower part of the piston chamber. The ducts opening directly into opposed side walls defining the piston chamber such that the piston operates as a valve between the piston chamber and the pressure chamber(s).
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: September 25, 2001
    Assignee: Valmet Corporation
    Inventors: Petri Enwald, Aaron Mannio, Pekka Ruha, Kalevi Vesterinen
  • Patent number: 6186437
    Abstract: A method and device for applying a load to a reel in a reel-up of a paper web in which a reel spool and the reel wound around it from the paper web are is loaded against a reeling cylinder with a predetermined loading force supported by a supporting point. The supporting point of the loading force is located in a construction movable at least in the machine direction along with the reel spool. The construction is positioned with respect to a fixed supporting point in accordance with the growth of the reel by a transfer device located between the construction and the supporting point and operating by mechanical power transmission, and/or a carriage at least partly bearing the weight of the reel is used as the construction. The supporting point of the reel is transferred at least in the machine direction by the carriage. The loading force is produced by a force device acting between the supporting point in the moving construction and the reel spool.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: February 13, 2001
    Assignee: Valmet Corporation
    Inventors: Pekka Ruha, Jouni Rantanen, Sakari Suoniemi