Patents Assigned to WÄRTSILÄ
  • Door lock
    Patent number: 4902053
    Abstract: The invention relates to a door lock, which comprises, a lock body (1) provided with a forend and including a latch bolt (3), which is removable between a retracted position and a protruding, locking position out from the lock body through an opening (2a) in the forend (2) and which is spring-loaded towards its said protruding position, and dead locking means turnable from a passive position into a dead locking position, in which they prevent removal of the latch bolt (3) from its said protruding position into its retracted position in the lock body (1). According to the invention the latch bolt (3) comprises a body of the latch bolt (3a) and a separate latch bolt member (3b).
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: February 20, 1990
    Assignee: Oy Wartsila Ab
    Inventors: Reijo Hakkarainen, Keijo Lehikoinen, Paavo Piiroinen
  • Upstreams inclined doctor blade
    Patent number: 4889071
    Abstract: An arrangement for the coating of a running cardboard, paper or the like web (1) by coating paste, whereby an excess amount of the supplied paste is removed and the supplied coating layer is levelled by means of a scraper knife (6) separately arranged after the coating position in the running direction of the web (1). The scraper knife (6) is arranged upstream, inclined relative to the running web (1) so, that the web (1) meets the knife (6) in an angle, which exceeds 90.degree., preferably considerably exceeds 90.degree..
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: December 26, 1989
    Assignee: Oy Wartsila AB
    Inventor: Yngve Fundell
  • Vacuum sewage system
    Patent number: 4865631
    Abstract: A waste tank for a vacuum sewage system comprises a top wall having a major portion and also having a generally cylindrical dome structure which projects upwardly from the major portion of the top wall. The horizontal sectional area of the dome is substantially smaller than the maximum horizontal sectional area of the tank. The top wall is formed in the dome structure with an inlet opening for admitting air and sewage to the tank and an outlet opening for exhausting air from the tank.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: September 12, 1989
    Assignee: Oy Wartsila Ab
    Inventors: Lennart Stroby, Ake Nilsson, Arne Ask
  • Passenger ship
    Patent number: 4838190
    Abstract: A big passenger ship having passenger cabins as well as general purpose spaces and service rooms. The ship is divided into an upper part and a lower part of which the lower part extends up to the uppermost deck reaching all over the hull of the ship. The lower part is at least substantially free from passenger cabins and least substantially all of the passenger cabins are in the form of outside cabins located to a multifloor unit forming the upper part of the ship. This unit is considerably narrower than the lower part of the ship and is constructed according to the rules applicable to constructions above the uppermost through-going deck of a ship.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: June 13, 1989
    Assignee: Oy Wartsila Ab
    Inventor: Kai Levander
  • Paper web cut-off device
    Patent number: 4827820
    Abstract: A paper web cut-off device, comprising a frame and a blade member mounted on the frame. The blade member is disposed to execute cutting of the paper web, with an actuator being provided for producing, on the blade member, the force required for cutting the paper web. The actuator for producing the required force for cutting of the paper web, is a spring member in which cutting energy is stored. At least one cocking or loading member is provided, which is disposed to cock or load the spring member.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: May 9, 1989
    Assignee: Oy Wartsila AB
    Inventor: Jorma Kinnunen
  • Coater
    Patent number: 4822640
    Abstract: An appliance for a double-sided coating of a moving web by means of two coating substance applicators and a smoothing nip comprising a back-up roll on one side of the web and a adjustable levelling blade or the like on the other side of the web. The coating substance is supplied on the web directly on the side facing the levelling blade and on the surface of the back-up roll or the web on the other side of the web. The smoothing nip and the both applicators are located within a 30 degrees sector of the back-up roll, preferably within a 20 degrees sector.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: April 18, 1989
    Assignee: Oy Wartsila Ab
    Inventors: Raimo Tuhkanen, Markku Grasten, Sivert Westergard
  • Rinse water valve for vacuum toilet system
    Patent number: 4811754
    Abstract: A fluid-flow control valve comprises a valve housing bounding a chamber and defining an inlet port for entry of fluid into the chamber and a control port for egress of fluid from the chamber. The control port is of reduced cross-sectional area relative to the chamber. The valve also comprises a valve closure member disposed in the chamber. The valve closure member is less dense than the fluid that the valve is to be used to control, so that when the chamber contains that fluid and the control port is above the closure member, the valve closure member is urged toward the control port so as to obstruct the control port. The closure member can be displaced away from the control port so as to allow fluid to flow through the control port.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: March 14, 1989
    Assignee: Oy Wartsila Ab
    Inventor: Raymond L. Wilhelm
  • Propeller shaft bearing arrangement
    Patent number: 4795273
    Abstract: The invention relates to a method for preventing leaks in a propeller shaft bearing arrangement including a plain bearing (2), which is lubricated with oil or water and which supports the propeller shaft (1) extending through an opening in the body (4) of a hull, and packing members (6,7) for keeping the lubricant in the lubrication space and for preventing water from entering the bearing arrangement. According to the invention, the pressure vibrations occuring in the lubricant are equalized arranging, in the lubrication space, a medium possessing a high compressibility, which medium by means of changes in volume receives and equalizes said pressure vibrations.
    Type: Grant
    Filed: November 19, 1987
    Date of Patent: January 3, 1989
    Assignee: Oy Wartsila Ab
    Inventors: Torbjorn Henriksson, Kari Laukia, Heikki Sipila, Markus Hjerppe
  • Apparatus for coating running webs
    Patent number: 4791879
    Abstract: A coater for coating a running paper or cardboard web comprises a coating chamber having one side open against the web and means for filling the coating chamber with pressurized coating substance. The coating chamber is limited in the longitudinal direction of the web by a web entrance wall, and opposite thereof, a back wall in the form of a doctor member for forming a coating layer on the web. The distance between the walls is so short that, at normal web running speed, the web moves from the web entrance wall to the back wall in a time of at the most 0.3 s, preferably at the most 0.03 s. Coating substance is supplied by means of positive pressure to the coating chamber at a position close to the web entrance wall.
    Type: Grant
    Filed: October 8, 1986
    Date of Patent: December 20, 1988
    Assignee: Oy Wartsila Ab
    Inventors: Dan Eklund, Sivert Westergard
  • Method of discharging sewage by vacuum and control apparatus for carrying the method into effect
    Patent number: 4791949
    Abstract: It is essential for optimum operation of a vacuum sewage line to cause an injection of air to follow behind a preceding operation of removal of sewage by suction. The invention solves the problem of dividing large quantities of sewage that are produced into portions and of conveying them through the vacuum sewage pipe by the triggering of a secondary air valve for the supply of air necessary after each suction operation.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: December 20, 1988
    Assignee: Oy Wartsila Ab
    Inventor: Wolfgang Tank
  • Web winding method and winder
    Patent number: 4789109
    Abstract: The invention relates to a web winding method and a winder for carrying out core replacement in a support drum winder. The core replacement is carried out with a sequence of measures, where the cutting of the web, removing of completed rolls (3) and placing of a new roll core between the support drums (1,2) is carried out by one single device comprising cutting, pushing and feeding means. The web (18) is held unmovably towards the trailing support drum (1) during the core replacement by means of a retainer device (16,17). For forwarding the removal of the rolls these are lifted by the same retainer device, if needed, to a height as required by the pusher device.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: December 6, 1988
    Assignee: Oy Wartsila Ab
    Inventors: Markku Kyytsonen, Raimo Pihlajamaa, Kai Fabritius, Heikki Niskanen, Jaakko Uotinen
  • Ship hull
    Patent number: 4781135
    Abstract: A ship hull has a general frame form defining a bottom surface and two side surfaces. The bottom surface of the hull has a horizontal bottom section that extends longitudinally of the hull midway between the two side surfaces of the hull, and the bottom surface of the hull also has two inclined bottom sections that are located entirely below the design waterline plane and are joined to the horizontal bottom section along respective sides thereof and to the side surfaces respectively. Each join is along a clearly defined longitudinal intersection edge, whereby each side of the hull is divided into at least three clearly defined portions. The width of the horizontal bottom section and of each of the inclined bottom sections is at least 20% of the maximum beam of the hull, and the inclined bottom sections extend over a substantial part of the length of the hull.
    Type: Grant
    Filed: September 16, 1986
    Date of Patent: November 1, 1988
    Assignee: Oy Wartsila Ab
    Inventor: Gustav Lindqvist
  • Ship construction
    Patent number: 4779552
    Abstract: The invention relates to a method for building a passenger section consisting of several cabin units (7) or similar in the superstructure of a ship with several floor levels located above the actual hull on the topmost deck (1) covering the entire hull of the ship. The passenger section is assembled by installing prefabricated cabin units (7) with a bottom construction embodying sufficient local strength so, that they are supported by at least one self-supporting three-dimensional latticework or frame consisting of braced girders (3, 3', 4, 5) or similar, the requisite overall strength of the superstructure being substantially based on this latticework or frame.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: October 25, 1988
    Assignee: Oy Wartsila Ab
    Inventors: Pirjo Harsia, Kai Levander, Dan Westerlund
  • Shrouded propeller
    Patent number: 4776755
    Abstract: A shrouded propeller for operation in ice-filled waters, which arrangement comprises a propeller and a nozzle encirculating the propeller, which propeller arrangement comprises an ice crusher annulus. The propeller arrangement is provided by at least one first flow path for the water flow entering the nozzle, which first path is directed via the interspace between said annulus and the actual nozzle. The first path is further directed to and through the nozzle interior. The arrangement is provided by a flow path for the water main flow through the central portion bordered by said annulus. If the central flow path is obstructed by ice chunks, said first path is available for the water flow inside the nozzle.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: October 11, 1988
    Assignee: Wartsila Meriteollisuus Oy
    Inventors: Hans Bjorkestam, Sauli Immonen, Heikki Tulkki, Harry Lindroos
  • Apparatus for connecting a web to a winding roll in continuous reeling apparatus
    Patent number: 4756790
    Abstract: Apparatus for use in continuous web reeling apparatus for connecting a web to a winding roll as the web is being unwound from an unwinding roll by deflecting a run of the web and pressing the deflected web against joining tape provided on the surface of the winding roll. The apparatus includes a plurality of axially aligned pressing members, a fluid-actuated expandable actuating device for exerting pressure on the pressing members to cause the pressing members to move against the web to exert a joining force on the web to press the web against the joining tape provided on the surface of the winding roll, and a spring device for returning the pressing members to their original position after the web has been connected to the winding roll.
    Type: Grant
    Filed: September 9, 1986
    Date of Patent: July 12, 1988
    Assignee: Oy Wartsila AB
    Inventor: Jorma Kinnunen
  • Winder device
    Patent number: 4746076
    Abstract: In a winder device for winding a moving web, such as paper or cardboard web, to form a roll of considerable weight, the roll is carried by support members giving it peripheral support. The support members comprise a rotatable winder drum, transmitting the web to the roll, and a movable support web device. The support members are arranged to form the main support of the roll. The support web device includes a support web having a portion between two rotatable support elements and this support web portion has a roll supporting surface of contact with the roll. The surface of contact is continuously enlarged when said roll grows, in order to eliminate the risk of roll damages due to excess support pressure when winding heavy rolls.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: May 24, 1988
    Assignee: Oy Wartsila Ab
    Inventors: Kauko Tomma, Seppo Saukkonen
  • Cooling of a paper web in a supercalender
    Patent number: 4738197
    Abstract: The invention relates to a method for accomplishing smoothness and glaze to paper or board webs in a calender by leading a web through hot nips which are formed between cooperating rolls of different hardnesses and having adjustable temperatures, and where a gradient calendering of the web based on the temperature difference between the web and the rolls is brought about. In order to increase the efficiency of the gradient calendering and in order to achieve a suitable temperature difference between the web and the heated rolls, the temperature of the web is arranged to be adjustable before the web enters the hot nip.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: April 19, 1988
    Assignee: Oy Wartsila Ab
    Inventor: Hannu Malkia
  • Propeller shaft bearing arrangement
    Patent number: 4733976
    Abstract: The invention relates to a method for preventing leaks in a propeller shaft bearing arrangement including a plain bearing (2), which is lubricated with oil or water and which supports the propeller shaft (1) extending through an opening in the body (4) of a hull, and packing members (6,7) for keeping the lubricant in the lubrication space and for preventing water from entering the bearing arrangement. The pressure vibrations occuring in the lubricant are equalized by arranging, in the lubrication space, a medium prossesing a high compressiblility, which medium through changes in volume receives and equalizes said pressure vibrations.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: March 29, 1988
    Assignee: Oy Wartsila Ab
    Inventors: Torbjorn Henriksson, Kari Laukia, Heikki Sipila, Markus Hjerppe, Esa Rane
  • Apparatus for wrapping paper rolls and the like in a wrapper
    Patent number: 4723395
    Abstract: An apparatus for wrapping different sizes of paper rolls or rolls of like material into a wrapper by rotating the rolls. The apparatus comprises a support frame encompassing the roll, means for conveying the wrapper on the roll, and at least one flexible guide band which is devised to press on the outer surface of the roll and to comply with the rotating of the roll. In the apparatus according to the invention, the guide band is configured into an endless conveyor with an at least approximately U-shaped form, within which the roll to be wrapped is inserted. An inner loop of the conveyor is configured to pass over four guide rollers mounted on two first lever arms and two second lever arms are capable of being transferred against the outer surface of the roll to be wrapped.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: February 9, 1988
    Assignee: Oy Wartsila Ab
    Inventor: Pauli Koutonen
  • Key or similar article
    Patent number: D302238
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: July 18, 1989
    Assignee: Oy Wartsila AB
    Inventor: Simo Kopu