Patents by Inventor Ulf Jansson

Ulf Jansson 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).

  • Publication number: 20020042988
    Abstract: The invention relates to a method for mounting at least one electronic or mechanical component on a printed board comprising the steps of: surface-mounting at least one guide element on the printed board or placing the at least one guide element in a dead end hole in the printed board, fastening the at least one guide element to the printed board by soldering before guiding the at least one electronic or mechanical component towards the printed board, and placing the at least one electronic or mechanical component on the printed board with the help of the at least one guide element. The invention also relates to a guide element and a electronic or mechanical component to be used in the method.
    Type: Application
    Filed: April 18, 2001
    Publication date: April 18, 2002
    Inventor: Ulf Jansson
  • Patent number: 6254335
    Abstract: A device for admixing a first fluid into a second fluid. The device has a housing with a rotationally symmetrical rotation chamber defined therein that is arranged with an inlet for the second fluid and an outlet for the mixed fluids. A distance from a center shaft of the housing to its inner wall is decreasing continuously from the inlet to the outlet. The device has rotation means for setting the second fluid in rotation along the inner wall of the rotation chamber. The device also has adding means for adding the first fluid into the vortex that is formed when the second fluid is rotating in the rotation chamber.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: July 3, 2001
    Assignee: Kvaerner Pulping AB
    Inventors: Rolf Ekholm, Ulf Jansson
  • Patent number: 6241852
    Abstract: Process and device for mixing fluid into a pulp suspension of cellulose-containing fiber material, in which the pulp suspension is pumped in through a pump inlet (17), brought into rotation and, at the desired reaction pressure, mixed with the said fluid while passing through a reaction sector comprising a stator shell (1), a rotor (7) which is coaxial therewith, and at least one fluid inlet (23), after which the pulp mixture leaves the reaction sector through a pulp outlet (20), in which the fluid, via the said fluid inlet (23), is supplied in the vicinity of the center of rotation of the rotating pulp suspension, where the local pressure in the pulp suspension is lower, due to the centrifugal force increasing radially outwards, than the reaction pressure prevailing at the periphery of the pulp suspension.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: June 5, 2001
    Assignee: Kvaerner Pulping AB
    Inventors: Rolf Ekholm, Ulf Jansson, Per Nyström
  • Patent number: 6156159
    Abstract: Process and device for mixing fluid into a pulp suspension of cellulose-containing fiber material, in which the pulp suspension is pumped in through a pump inlet (17), brought into rotation and, at the desired reaction pressure, mixed with the said fluid while passing through a reaction sector comprising a stator shell (1), a rotor (7) which is coaxial therewith, and at least one fluid inlet (23), after which the pulp mixture leaves the reaction sector through a pulp outlet (20), in which the fluid, via the said fluid inlet (23), is supplied in the vicinity of the center of rotation of the rotating pulp suspension, where the local pressure in the pulp suspension is lower, due to the centrifugal force increasing radially outwards, than the reaction pressure prevailing at the periphery of the pulp suspension.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: December 5, 2000
    Assignee: Kvaerner Pulping AB
    Inventors: Rolf Ekholm, Ulf Jansson, Per Nystrom
  • Patent number: 6059323
    Abstract: An expansion coupling, for connecting a first conduit to a second conduit, has a housing that is open at opposite ends thereof. The conduits and at least one end of the housing have sealing means that comprise an interior sealing ring and an exterior sealing ring that has a larger external and internal diameter than the interior sealing ring. The interior sealing ring has a radially inwardly directed sealing surface and the exterior sealing ring has a radially outwardly directed sealing surface. The sealing rings have sealing side surfaces for sealing against adjacent sealing rings and the sealing rings are radially displaceable with respect to each other to accommodate for any misalignments of connected conduits.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: May 9, 2000
    Assignee: Kvaerner Pulping AB
    Inventors: Rolf Ekholm, Ulf Jansson
  • Patent number: 6004364
    Abstract: The present invention relates to a process and a device for the separation and purification of gas from a fiber suspension, especially residual gas after ozone delignification or pulp suspension, wherein the suspension together with the gas is introduced into a cyclone (2) or similar in which essential separation of suspension takes place, after which the essentially gas-free suspension is drawn off downwards and the gas (5) containing residual fiber and/or other impurities is drawn off upwards, the gas stream (5), before it is conducted away, being led through a liquid bath for separation of residual fibers and/or other impurities from the gas stream.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: December 21, 1999
    Assignee: Kamyr Aktiebolag
    Inventors: Rolf Ekholm, Ulf Jansson
  • Patent number: 5934318
    Abstract: The invention relates to a valve system for a space (1) which is under vacuum in relation to its surroundings (3), which valve system comprises a valve unit (7) which is intended to be arranged in association with a wall (2) which delimits the said space and has a wall opening (4) through the said wall, which valve unit comprises a valve (8) which is normally shut and closes the said wall opening but is arranged to be opened and allow air from the surroundings into the said space if the vacuum, i.e.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: August 10, 1999
    Assignee: Kvaerner Pulping aktiebolag
    Inventors: Ulf Jansson, Rolf Ekholm
  • Patent number: 5904753
    Abstract: The present invention relates to a process and a device for the separation and purification of gas from a fiber suspension, especially residual gas after ozone delignification or pulp suspension, wherein the suspension together with the gas is introduced into a cyclone (2) or similar in which essential separation of suspension takes place, after which the essentially gas-free suspension is drawn off downwards and the gas (5) containing residual fiber and/or other impurities is drawn off upwards, the gas stream (5), before it is conducted away, being led through a liquid bath for separation of residual fibers and/or other impurities from the gas stream.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: May 18, 1999
    Assignee: Kvaerner Pulping AB
    Inventors: Rolf Ekholm, Ulf Jansson
  • Patent number: 5879422
    Abstract: The present invention relates to a cyclone, mainly for separating liquid from gas/vapor, which is formed upon pressure reduction of spent cooking liquid in connection with pulp production. The cyclone includes an inlet arrangement connected to a supply line and a valve and the inlet arrangement includes an insertion pipe, the length of which preferably exceeds one meter.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: March 9, 1999
    Assignee: Kamyr AB
    Inventors: Goran Brottg.ang.rdh, Ulf Jansson
  • Patent number: 5762760
    Abstract: The reactor comprises a pressurized vessel having an outlet member at its top and further including a blow line. The outlet member includes a housing that is in fluid communication with the vessel and to which the blow line is connected. A rotor is arranged in the housing for urging pulp in a direction of an inner side of the housing so that the pulp is discharged to the blow line while gas accumulates in the center of the housing. An outlet line is in fluid communication with an outlet channel for removing the gas from the center of the housing.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: June 9, 1998
    Assignee: Kvaerner Pulping AB
    Inventors: Rolf Ekholm, Ulf Jansson
  • Patent number: 5744004
    Abstract: System for feeding a suspension, preferably a suspension of chips in a liquid carrier, to a pressurized vessel in a cellulose pulp mill, which system comprises at least one pump (25, 26) between a low-pressure part and the pressurized vessel for driving the suspension from the low-pressure part into the vessel, which pump is of the type which comprises a number of parallel discs (40, 42) which are held together to form a stack (39) and rotate in a pump chamber (36) in a pump housing about a common axis of rotation, with the spaces (46) between the discs being greater than the particles in the suspension, and with an axial inlet and a tangential outlet for the suspension. The invention also includes a pump and an apparatus unit which are intended to form part of the system.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: April 28, 1998
    Assignee: Kvaerner Pulping AB
    Inventors: Rolf Ekholm, Ulf Jansson
  • Patent number: 5711852
    Abstract: A process and device for mixing fluid into a pulp suspension of cellulose-containing fiber material, in which the pulp suspension is pumped in through a pump inlet, brought into rotation and, at the desired reaction pressure, mixed with the said fluid while passing through a reaction sector comprising a stator shell, a rotor which is coaxial therewith, and at least one fluid inlet, after which the pulp mixture leaves the reaction sector through a pulp outlet, in which the fluid, via the said fluid inlet, is supplied in the vicinity of the center of rotation of the rotating pulp suspension, where the local pressure in the pulp suspension is lower, due to the centrifugal force increasing radially outwards, then the reaction pressure prevailing at the periphery of the pulp suspension.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: January 27, 1998
    Assignee: Kvaerner Pulping Technologies Aktiebolag
    Inventors: Rolf Ekholm, Ulf Jansson, Per Nystrom
  • Patent number: 5669948
    Abstract: The present invention relates to a cyclone, mainly for separating liquid from gas/vapor which is formed on pressure reduction of spent cooling liquor in connection with pulp production. The cyclone includes a casing, an inlet arrangement, a lower outlet line for liquid and an upper outlet line for vapor and gas. The inlet arrangement is connected to a supply line with a valve and the inlet arrangement consists of an exchangeable insertion pipe, the length of which exceeds one meter, preferably two meters and is most preferably between 2.5 and 3.5 meters long.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: September 23, 1997
    Assignee: Kamyr AB
    Inventors: Goran Brottg.ang.rdh, Ulf Jansson
  • Patent number: 5655390
    Abstract: A device for treating a preferably cellulose containing suspension, comprising a housing (110) on a stand (112), characterized in that it comprises an injection chamber (132) limited by two disc-shaped wall members (134) arranged so as to rotate about a center of rotation (C') common to the axle, in that at least one inlet opening (130) is disposed in the inner part of the chamber (132) for the suspension to be treated, in that outlets (167) for the treated suspension are disposed in an outer part (166) (the acceptance space) of the injection chamber (132), in that extraction chambers (170) are disposed outside the wall members (134) of the injection chamber (132), in that openings (164) for filtrate are disposed between the injection chamber (132) and the extraction chamber (170) within at least one annular zone of the radial extent of the wall members (134), in that outlets (130) for filtrate are arranged from the extraction chambers, and in that the size of the injection chamber is variable.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: August 12, 1997
    Assignee: Kvaerner Pulping Technologies Aktiebolag
    Inventors: Ulf Jansson, Rolf Ekholm
  • Patent number: 5615997
    Abstract: The invention relates to a pump for pumping fibrous pulp suspension and separating gas from the suspension, comprising a pump casing with a pump casing chamber (4) with an axial inlet (17) and a radial outlet (6) for the suspension and also a gas outlet (19); in the pump chamber part a pump wheel (3) with a hub (27), on the hub front pump vanes (30) in a front pump chamber part (4A) facing the inlet, rear pump vanes (32) in a rear pump chamber part (4B) and an annular partition (28) between the front and rear pump chamber parts, which partition is joined to the hub; and a drive shaft (10) for the pump wheel which extends through one end wall (7) of the pump casing, and also bearing members (13, 14, 15) for the drive shaft.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: April 1, 1997
    Assignee: Kvaerner Pulping Technologies Aktiebolag
    Inventors: Ronny Hoglund, Ulf Jansson
  • Patent number: 5556508
    Abstract: A method for washing a fibre suspension including the steps of feeding the suspension into an annular displacement space, supplying a fluid through a permeable outer surface of the space, rotating the space to establish a fibre layer between the fluid supplied through the permeable outer surface of the displacement space and a remaining part of the fibre suspension.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: September 17, 1996
    Assignee: Kvaerner Pulping Technologies Aktiebolag
    Inventors: Rolf Ekholm, Ulf Jansson
  • Patent number: 5556200
    Abstract: An apparatus for mixing a first fluid into a second fluid that comprises a housing (1) having a flow chamber (39) for the second fluid, a flow restrictor member (6) in the flow chamber, and holes (18) for introducing the first fluid into at least one gap (15, 16) between the flow restrictor member and those walls (5, 10) of the flow chamber (39) facing towards the flow restrictor member. The flow restrictor member and flow chamber, in a plane transversely to the principal flow direction (31) of the second fluid, each has the shape of a wedge. Gaps (15, 16) are formed between each of those two sides of the flow restrictor member that converge in a wedge shape and those walls of the wedge-shaped chamber facing towards the flow restrictor member. The holes (18) for introducing the first fluid are disposed in the region of the gaps (15, 16).
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: September 17, 1996
    Assignee: Kvaerner Pulping Technologies Aktiebolag
    Inventors: Rolf Ekholm, Ulf Jansson
  • Patent number: 5461888
    Abstract: A device for treating a preferably cellulose-containing suspension, comprising a housing (1) on a stand (2).
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: October 31, 1995
    Assignee: Kvaerner Pulping Technologies Aktiebolag
    Inventors: Ulf Jansson, Rolf Ekholm
  • Patent number: D354063
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: January 3, 1995
    Assignee: Kamyr Aktiebolag
    Inventors: Rolf Ekholm, Ulf Jansson
  • Patent number: D382881
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: August 26, 1997
    Assignee: Kvaerner Pulping Technologies Aktiebolag
    Inventors: Ronny Hoglund, Ulf Jansson