Patents by Inventor Henry Virta

Henry Virta 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: 12017877
    Abstract: A method for joining ends of fiber webs with a device comprising a tool element with a gripping device and a traversing punching device. A run of the fiber web from the emptying parent roll is moved to a joining position at the tool element. The trailing end of the parent roll fiber web is cut upstream from the joining position and the fiber web is attached to the tool element by a gripping device of the tool element. An end of a new roll fiber web is guided to contact with and to an overlapping position with the trailing end of the parent roll fiber. The traversing punching device is moved across the width direction of the fiber webs and makes at least one joint cut and joins the fiber webs. The new fiber web is cut downstream from the joint, and then tension control is turned on.
    Type: Grant
    Filed: June 11, 2022
    Date of Patent: June 25, 2024
    Assignee: Valmet Technologies Oy
    Inventors: Jaakko Haapanen, Henry Virta, Kenneth Åkerlund
  • Publication number: 20220396444
    Abstract: A method for joining ends of fiber webs with a device comprising a tool element with a gripping device and a traversing punching device. A run of the fiber web from the emptying parent roll is moved to a joining position at the tool element. The trailing end of the parent roll fiber web is cut upstream from the joining position and the fiber web is attached to the tool element by a gripping device of the tool element. An end of a new roll fiber web is guided to contact with and to an overlapping position with the trailing end of the parent roll fiber. The traversing punching device is moved across the width direction of the fiber webs and makes at least one joint cut and joins the fiber webs. The new fiber web is cut downstream from the joint, and then tension control is turned on.
    Type: Application
    Filed: June 11, 2022
    Publication date: December 15, 2022
    Inventors: Jaakko HAAPANEN, Henry VIRTA, Kenneth ÅKERLUND
  • Patent number: 9169095
    Abstract: A method and apparatus for winding fiber webs, particularly paper and board webs, in which partial web rolls (R1, R2) are wound in a winding device having at least two winding stations (21, 22), where partial webs (W1, W2) are guided to rolls (R1, R2) via a nip between a winding roll(s) (12, 41, 42) and the partial web rolls (R1, R2). The partial webs (W1, W2) are guided on the surface of the winding roll(s) (12, 41, 42) before entering the nips creating a wrap angle (A1, A2) on the winding drum(s) (12, 41, 42). The wrap angles (A1, A2) of the partial webs onto the surface of the winding roll (12, 41, 42) is at least 120° and the wrap angle ratio, i.e. the relation of the larger wrap angle to the smaller wrap angle, is at least 1 and at most 1.25.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: October 27, 2015
    Assignee: Valmet Technologies, Inc.
    Inventors: Jaakko Haapanen, Henry Virta, Heikki Föhr
  • Publication number: 20130270383
    Abstract: A method and apparatus for winding fiber webs, particularly paper and board webs, in which partial web rolls (R1, R2) are wound in a winding device having at least two winding stations (21, 22), where partial webs (W1, W2) are guided to rolls (R1, R2) via a nip between a winding roll(s) (12, 41, 42) and the partial web rolls (R1, R2). The partial webs (W1, W2) are guided on the surface of the winding roll(s) (12, 41, 42) before entering the nips creating a wrap angle (A1, A2) on the winding drum(s) (12, 41, 42). The wrap angles (A1, A2) of the partial webs onto the surface of the winding roll (12, 41, 42) is at least 120° and the wrap angle ratio, i.e. the relation of the larger wrap angle to the smaller wrap angle, is at least 1 and at most 1.25.
    Type: Application
    Filed: April 15, 2013
    Publication date: October 17, 2013
    Applicant: METSO PAPER, INC.
    Inventors: Jaakko Haapanen, Henry Virta, Heikki Föhr
  • Publication number: 20070151441
    Abstract: The invention relates to a shield structure (1) against flying pieces, such as bullets, fragments, and other similar bodies, in order to stop them or to reduce their impact force, formed of a hollow structure (1), which is filled with, or can be filled with a medium, and with its aid brought into an operating state. The shield structure is compartmentalized (3) and contains an absorbent material (4), which is able to absorb the medium. The invention also relates to a method, with the aid of which it is possible to stop flying bodies, or to reduce their impact force.
    Type: Application
    Filed: February 17, 2005
    Publication date: July 5, 2007
    Inventors: Mikko Reinikainen, Mikko Karppinen, Henri Andell, Jenni Koski, Erno Nieminen, Jani Kauppi, Henri Laitonen, Linda Norrgard, Henry Virta