Patents by Inventor Johan Wennerström

Johan Wennerström 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: 20230012214
    Abstract: A filter device for filtering water. The device includes a housing, for submersion in a water reservoir, that includes an intake aperture for intake of water from the reservoir and a return aperture for returning water to the reservoir. The housing extends along an axis. The device includes a pump, housed in the housing, arranged on the axis to direct fluid from the intake aperture to the return aperture. The device includes a filter arrangement, housed in the housing, arranged along the axis from the pump in a fluid path between the intake aperture and the return aperture.
    Type: Application
    Filed: July 6, 2022
    Publication date: January 12, 2023
    Inventor: Johan Wennerström
  • Patent number: 9919587
    Abstract: A vehicle is provided including a cabin, a conduit arranged to conduct a flow of air from outside the vehicle to the cabin, and a filter unit arranged to filter at least a portion of the flow of air before it enters the cabin. Further, an ionizing unit is arranged in the conduit upstream of the filter unit as seen in the direction of the flow of air so as to charge particles present in the flow of air and transmit at least a major part of the charged particles towards the filter unit. The at least one collector electrode has a tube-like shape arranged to conduct at least a portion of the flow of air, and the at least one emitter electrode is arranged at a central axis of the tube-like shaped collector electrode, whereby a more uniform ionization field is provided.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: March 20, 2018
    Assignee: BLUEAIR AB
    Inventor: Johan Wennerström
  • Patent number: 9919252
    Abstract: An air purifier device is provided including a fan unit including a fan arranged to produce an air flow through the air purifier device, and a filter unit including a filter arranged to filter the air flow produced by the fan. The filter unit is adapted to stand on a support surface when the air purifier device is positioned for use. The air purifier device further includes a coupling mechanism arranged to secure the fan unit on top of the filter unit. The coupling mechanism includes two release means arranged on opposite outer sides of the fan unit, and the fan unit is releasable from the filter unit by actuating the two release means. The filter unit may be removed from the fan unit by a single action (or movement) by the user, whereby filter replacement of the air purifier device is facilitated.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: March 20, 2018
    Assignee: BLUEAIR AB
    Inventors: Johan Wennerström, Elin Engberg
  • Patent number: 9694369
    Abstract: An air purifier device includes a chamber defined by a side wall arranged to guide an air flow through the air purifier device. The air purifier device further includes at least one emitter electrode and at least one collector plate electrode arranged to ionize airborne particles. The at least one emitter electrode is arranged to extend from the side wall and inwards in the chamber and the at least one collector plate electrode is arranged to extend from the side wall and inwards in the chamber. The air purifier device enables the side wall to be manufactured from e.g. plastic, or other non-conductive or non-magnetic material. This in turn may enable a lower weight of the air purifier device and facilitated manufacturing, as the side walls of the chamber e.g. may be formed by plastic moulding just as many other parts of the air purifier device.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: July 4, 2017
    Assignee: BLUEAIR AB
    Inventors: Elin Engberg, Johan Wennerström
  • Patent number: 9636617
    Abstract: An air purifier device is provided including a fan arranged to produce an air flow through the air purifier device, and a fan duct for guiding the air flow produced by the fan. The fan duct extends in an upright direction of the air purifier device. The air purifier device further includes an air intake arranged below a lower end of the fan duct, and an exhaust arranged at an upper end of the fan duct so as to exhaust purified air in an upward direction from the air purifier device when the air purifier device is in use. The fan duct is flared in direction from an intermediate portion of the fan duct towards both it ends, and the fan is arranged at least partly in the intermediate portion. A facilitated circulation of air through the room and through the air purifier device standing in the room is provided.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: May 2, 2017
    Assignee: BLUEAIR AB
    Inventors: Johan Wennerström, Elin Engberg
  • Publication number: 20160229267
    Abstract: A vehicle is provided including a cabin, a conduit arranged to conduct a flow of air from outside the vehicle to the cabin, and a filter unit arranged to filter at least a portion of the flow of air before it enters the cabin. Further, an ionizing unit is arranged in the conduit upstream of the filter unit as seen in the direction of the flow of air so as to charge particles present in the flow of air and transmit at least a major part of the charged particles towards the filter unit. The at least one collector electrode has a tube-like shape arranged to conduct at least a portion of the flow of air, and the at least one emitter electrode is arranged at a central axis of the tube-like shaped collector electrode, whereby a more uniform ionization field is provided.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 11, 2016
    Applicant: Blueair AB
    Inventor: Johan WENNERSTRÖM
  • Publication number: 20150231543
    Abstract: An air purifier device is provided including a fan arranged to produce an air flow through the air purifier device, and a fan duct for guiding the air flow produced by the fan. The fan duct extends in an upright direction of the air purifier device. The air purifier device further includes an air intake arranged below a lower end of the fan duct, and an exhaust arranged at an upper end of the fan duct so as to exhaust purified air in an upward direction from the air purifier device when the air purifier device is in use. The fan duct is flared in direction from an intermediate portion of the fan duct towards both it ends, and the fan is arranged at least partly in the intermediate portion. A facilitated circulation of air through the room and through the air purifier device standing in the room is provided.
    Type: Application
    Filed: November 20, 2014
    Publication date: August 20, 2015
    Applicant: Blueair AB
    Inventors: Johan WENNERSTRÖM, Elin Engberg
  • Publication number: 20150231645
    Abstract: An air purifier device includes a chamber defined by a side wall arranged to guide an air flow through the air purifier device. The air purifier device further includes at least one emitter electrode and at least one collector plate electrode arranged to ionize airborne particles. The at least one emitter electrode is arranged to extend from the side wall and inwards in the chamber and the at least one collector plate electrode is arranged to extend from the side wall and inwards in the chamber. The air purifier device enables the side wall to be manufactured from e.g. plastic, or other non-conductive or non-magnetic material. This in turn may enable a lower weight of the air purifier device and facilitated manufacturing, as the side walls of the chamber e.g. may be formed by plastic moulding just as many other parts of the air purifier device.
    Type: Application
    Filed: November 20, 2014
    Publication date: August 20, 2015
    Applicant: BLUEAIR AB
    Inventors: Elin ENGBERG, Johan WENNERSTRÖM
  • Publication number: 20150231542
    Abstract: An air purifier device is provided including a fan unit including a fan arranged to produce an air flow through the air purifier device, and a filter unit including a filter arranged to filter the air flow produced by the fan. The filter unit is adapted to stand on a support surface when the air purifier device is positioned for use. The air purifier device further includes a coupling mechanism arranged to secure the fan unit on top of the filter unit. The coupling mechanism includes two release means arranged on opposite outer sides of the fan unit, and the fan unit is releasable from the filter unit by actuating the two release means. The filter unit may be removed from the fan unit by a single action (or movement) by the user, whereby filter replacement of the air purifier device is facilitated.
    Type: Application
    Filed: November 20, 2014
    Publication date: August 20, 2015
    Inventors: Johan WENNERSTRÖM, Elin ENGBERG
  • Patent number: 7323104
    Abstract: A water filter device includes a container (1) that has an opening for filling of water, and a filter unit (3) that is movable relative to the container (1). It is significant of the device that the filter unit (3) includes a filter element (5), an operating rod (7) connected to the filter element (5) and sealing means (14) along the periphery of the filter element (5), and that the filter element (5) has a particle filter (10) and an adsorption filter (11).
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: January 29, 2008
    Assignee: Blue Air AB
    Inventor: Johan Wennerström
  • Patent number: 6540804
    Abstract: An air cleaner includes a fan unit (1; 1′) and a filter unit (3) that is entirely replaceable, where the fan unit (1; 1′) and the filter unit (3) are mutually connected by a quick coupling and the filter unit includes a filter and an exterior casing that defines an exterior of the air cleaner when the air cleaner is in an operating position.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: April 1, 2003
    Assignee: Blue Air AB
    Inventor: Johan Wennerström
  • Patent number: 6364935
    Abstract: The present invention relates to a method for cleaning of a gaseous fluid from particles being present in the fluid, the gaseous fluid being ionized, i.e. the particles are subjected to a charging, and that the ionized gaseous fluid is brought to pass through a precipitator unit (2) including a filter medium. The invention also relates to a device for cleaning of a gaseous fluid. Filters for cleaning of air often require expensive filter medium and complicated arrangements as regards ionization of the air and charging of the filter medium. The present invention is characterized by an extremely simple method where the air is ionized and then the ionized air is brought to pass through a filter medium of polypropylene.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: April 2, 2002
    Assignee: Bleuair AB
    Inventor: Johan Wennerström
  • Patent number: D797914
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: September 19, 2017
    Assignee: BLUEAIR AB
    Inventors: Joakim Nygren, Johan Wennerström