EP2276384B1 - Staubsaugerdüse - Google Patents

Staubsaugerdüse Download PDF

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Publication number
EP2276384B1
EP2276384B1 EP09731968.5A EP09731968A EP2276384B1 EP 2276384 B1 EP2276384 B1 EP 2276384B1 EP 09731968 A EP09731968 A EP 09731968A EP 2276384 B1 EP2276384 B1 EP 2276384B1
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
cleaner nozzle
sealing edge
protrusion
suction opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09731968.5A
Other languages
English (en)
French (fr)
Other versions
EP2276384A4 (de
EP2276384A1 (de
Inventor
Bo Pilsmo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux AB
Original Assignee
Electrolux AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux AB filed Critical Electrolux AB
Publication of EP2276384A1 publication Critical patent/EP2276384A1/de
Publication of EP2276384A4 publication Critical patent/EP2276384A4/de
Application granted granted Critical
Publication of EP2276384B1 publication Critical patent/EP2276384B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like

Definitions

  • the present invention relates to a vacuum cleaner nozzle comprising a suction plate having an inlet side and an outlet side, and which comprises an air duct having a duct wall extending through the suction plate from a suction opening on the inlet side to the outlet side.
  • the vacuum cleaner nozzle further comprises a first primary sealing edge for engaging with a surface being cleaned and for at least partly sealing the suction opening against the surface being cleaned.
  • the first primary sealing edge extends along at least a portion of a side of the suction opening.
  • a vacuum cleaner is a device that uses a suction force generated by a fan unit to create a partial vacuum to suck up objects like dust, particles, fibres, hair etc. usually from floors and carpets.
  • a vacuum cleaner nozzle which is connected via a nozzle outlet to an extension tube and/or a suction hose to a dust compartment within the body of the vacuum cleaner.
  • the suction hose is normally engaged with a removable dust bag arranged inside the dust compartment for collecting dust and foreign materials that are sucked in through the vacuum cleaner nozzle when the vacuum cleaner is in an operative mode.
  • the dust laden air stream forwards the removed objects, via the hose, to the body of the vacuum cleaner in which the removed objects are separated from the air stream in the dust bag.
  • dust can be separated from the dust laden air stream using a cyclone or other suitable dust separating unit.
  • US 2 921 331 A discloses a suction cleaning rug tool comprising a body having a rug contacting face, an elongated air pocket in said face, suction passage means from the air pocket through the body, a secondary elongated slot in said face parallel to the air pocket and communicating through the body with the atmosphere, and a dam between the air pocket and said slot having the plane of its lower surface coincident with the plane of the rug contacting face whereby air flowing under said dam is directed into the nap of the rug.
  • the tool also comprises a rug engaging agitator narrower in width than the width of the slot and mounted in the slot for sliding movement from the side of the slot adjacent the dam for engagement therewith thereby increasing the resistance to air passing under said dam to the other side of the slot remote from said dam.
  • Vacuum cleaner nozzles comprising multiple joints in the connection between the nozzle outlet and the extension tube and/or suction hose for increased performance on uneven and soft surfaces are known.
  • the multiple joints allow the vacuum cleaner nozzle to adapt to the surface and thereby pick-up more dust as the hose and the vacuum cleaner nozzle is operated over a floor or a carpet.
  • WO 02/26097 A1 discloses a vacuum cleaner nozzle which is pivotally mounted with respect to a nozzle outlet, such that movement of the vacuum cleaner nozzle in a forward and backward direction alternately brings one of two working edges (or sealing edges which are arranged to restrict the air flow from areas surrounding the active suction area of the vacuum cleaner nozzle on soft surfaces) of the vacuum cleaner nozzle in closer contact with the surface being vacuumed. This is advantageous when vacuuming carpeted floors where hair, fluff and other fibrous material become trapped on the carpet.
  • a vacuum cleaner nozzle comprising a suction plate, which has an inlet side and an outlet side.
  • the suction plate comprises an air duct having a duct wall.
  • the air duct extends through the suction plate from a suction opening on the inlet side to the outlet side.
  • the suction plate further comprises a first primary sealing edge for engaging with a surface being cleaned and for at least partly sealing the suction opening against the surface being cleaned.
  • the first primary edge extends along at least a portion of a side of the suction opening.
  • the invention is characterized by that at least one inlet end portion of the duct wall forms an elongated first protrusion.
  • the first protrusion provides a first secondary sealing edge extending along at least a portion of the first primary sealing edge and is further horizontally displaced from the first primary sealing edge.
  • a vacuum cleaner nozzle in which the duct wall of the air duct that extends through the suction plate is provided with an elongated protrusion in connection with the suction opening of the inlet side.
  • the inlet side is provided with a first primary sealing edge which during operation of the vacuum cleaner nozzle, i.e. when cleaning a surface, is pressed against the surface, sealing off the areas surrounding the suction area of the vacuum cleaner nozzle, which helps create underpressure in the suction opening.
  • the mentioned first protrusion is positioned close to the inlet side and the first primary sealing edge, but is horizontally displaced such that a first secondary sealing edge is provided.
  • the secondary sealing edge will decrease the size of underpressure drops that are created at the inlet side if the vacuum cleaner nozzle for some reason suddenly loses its close contact with the surface being cleaned (i.e. if the first primary sealing edge of the suction plate is suddenly tilted too far up from the surface).
  • the underpressure drop of the vacuum cleaner nozzle can be kept more controlled as the vacuum cleaner nozzle is moved across carpets or any textile or soft surface, and when the nozzle is tilted too much so that underpressure would otherwise have dropped. If the underpressure is lost under the vacuum cleaner nozzle, the dust removal ability is temporarily decreased, as the underpressure has to be built up again.
  • a more controlled underpressure of the vacuum cleaner nozzle is obtained by allowing the underpressure to decrease in smaller steps as the first secondary sealing edge supports a less abrupt change in surface contact to the surface being cleaned.
  • the annoying jumping effect and vibration effect in the vacuum cleaner nozzle due to sudden underpressure drops are then decreased.
  • the secondary sealing edge provides better dust removal ability from carpets as well as a more comfortable cleaning experience.
  • the first protrusion is vertically displaced a predetermined distance inwards the air duct from the suction opening, which further helps smoothening sudden underpressure drops.
  • the protrusion is arranged in a centre portion of the suction plate.
  • the underpressure created between the vacuum cleaner nozzle and the surface being vacuumed is larger at the centre portion of the suction plate.
  • the positioning of the protrusion in the centre portion of the suction plate is more beneficial as it allows for keeping as high underpressure as possible for the area covered by the suction plate overall.
  • the suction opening has a substantially rectangular shape.
  • the first protrusion is arranged at the centre of a long side of the suction opening.
  • the positioning of the first protrusion in the centre of one of the long sides of the suction opening then provides for, especially when the protrusion is arranged to extend a predetermined distance along the long side, encountering a plurality of irregularities in the surface being vacuumed simultaneously, while still having the most advantageous positioning with respect to the distribution of the strength of the underpressure created beneath the suction plate.
  • the vacuum cleaner nozzle further comprises a second primary sealing edge arranged on an opposite long side of the suction opening.
  • An elongated second protrusion is arranged on the opposite long side of the suction opening providing a second secondary sealing edge.
  • the second secondary sealing edge extends along at least a portion of the second primary sealing edge and is horizontally displaced from the second primary sealing edge.
  • the predetermined distance is smaller or equal to 1 mm.
  • the first protrusion is arranged to be one of step shaped, wedge shaped, and bevelled.
  • the first protrusion horizontally extends between 0.5 to 40% of the width of the suction opening.
  • the vacuum cleaner nozzle further comprises at least one lint picker, and the first protrusion laterally extends along the lint picker.
  • Fig. 1 is a three-dimensional view of an embodiment of a vacuum cleaner nozzle according to the present invention.
  • the vacuum cleaner nozzle 1 comprises a nozzle body 2, which is connected to a nozzle outlet 3 via a support structure 6.
  • the nozzle outlet 3 is adapted for being connected to the suction hose of a vacuum cleaner (not shown), such that when the vacuum cleaner is in an operative mode, underpressure is created as air is sucked through the vacuum cleaner nozzle via the hose to the vacuum cleaner.
  • a typical vacuum cleaner is well known by the skilled man and will not be described in further detail here.
  • the nozzle body 2 is pivotally connected with the support structure 6. This connection between the nozzle body 2 and the support member 6 allows a limited degree of movement such that the nozzle body 2 is allowed to tilt as the vacuum cleaner nozzle 1 is moved forwards and backwards against the surface being cleaned during vacuuming.
  • the nozzle body 2 supports two brushes 4, 5 which are preferably manually or automatically retractable, such that the brushes can be retracted into the nozzle body 2 when the vacuum cleaner nozzle 1 is used for vacuuming carpets or other soft surfaces.
  • the nozzle body 2 further comprises a suction plate 10, which is located between the two brushes 4, 5.
  • Fig. 2 illustrates the suction plate 10 in more detail.
  • the suction plate 10 is preferably a plastic part, which has been formed by means of, e.g. injection moulding it in one piece, a metal part, or a combination of plastic and metal.
  • the suction plate 10 has an inlet side 11 and an outlet side 12, and there is an air duct 30 extending from the inlet side 11 to the outlet side 12.
  • the air duct 30 forms a suction opening 13.
  • the suction opening 13 has, in this exemplifying embodiment, a substantially rectangular shape and has a first long side 14 and a second long side 15.
  • the first long side 14 and the second long side 15 are separated a distance which is herein after referred to as the suction opening width.
  • the suction plate 10 is arranged such that the inlet side 11 is facing the surface being cleaned.
  • horizontally is referring to a plane which is parallel to the inlet side 11 and vertically is referring to a plane which is perpendicular to the inlet side.
  • the long sides 14, 15 are perpendicular to the normal direction of movement of the vacuum cleaner nozzle 1 when it is being operated during vacuuming of a surface.
  • the air duct 30 extends through the suction plate 10 to the outlet side 12.
  • An outlet tube 16 is arranged on the outlet side 12, by means of which a suction can be applied to the suction opening 13, i.e. the nozzle outlet 3 is connected to the outlet tube 16 and further connected to the suction hose of a vacuum cleaner (not shown).
  • the suction plate 10 comprises two lint pickers 20, 22 located opposite to each other, with respect to the suction opening 13.
  • the lint pickers 20, 22 are arranged in parallel with the first primary sealing edge 19 and the second primary sealing edge 18.
  • Lint pickers are typically comprising a strip of a material in which tufts of fine fibre are secured. The lint pickers attract dust from the surface being cleaned, and the dust is further sucked in through the suction opening 13.
  • the lint picker 22 When moving the vacuum cleaner nozzle 1 forwards (away from the user) the lint picker 22 picks up fibres and dust from the surface being cleaned, and when moving the vacuum cleaner nozzle 1 backwards, the collected dust and fibres are peeled off the lint picker 22 and is sucked in through the suction opening. (Similarly fibres are picked up and peeled off from the pint licker 20 when the vacuum cleaner nozzle is moved backwards/forwards.)
  • a first primary sealing edge 19 and a second primary sealing edge 18 are operative to at least partly seal the suction opening 13 against a carpet, such that a large suction, i.e. underpressure, can be generated by means of the suction plate 10.
  • the first primary sealing edge 19 and the second primary sealing edge 18 extend across substantially the full width of the suction plate 10 and are in this exemplifying embodiment straight.When the suction plate 10 is in a straight position on a carpet the first primary sealing edge 19 and the second primary sealing edge 18 engages with the carpet.
  • the purpose of the primary sealing edges 18, 19 is to restrict the air flow from areas surrounding the active suction area of the vacuum cleaner nozzle on soft surfaces, the active suction area typically being the area covered by the suction opening 13.
  • the primary sealing edges 18, 19 are active so as to agitate the fibres of a soft surface, e.g. carpet fibres, during the forward and backward movement of the vacuum cleaner nozzle 1 against the surface being cleaned.
  • first primary sealing edge 19 and the second primary sealing edge 18 are arranged having an arrow shape, wherein the width of the suction opening is minimized in the centre portion of the suction plate (not shown).
  • Other shapes of the first primary sealing edge 19 and the second primary sealing edge 18 are also possible.
  • the primary sealing edges 18, 19 are typically arranged as integrated parts of the suction plate 10, however in an alternative embodiment the suction plate is provided with sealing edges, which are separate parts being mounted along the suction opening 13.
  • the airduct 30 having a duct wall 31 is now described in more detail and with reference to Fig. 3 a) to d) , which show a bottom view, a cross-sectional side view, and two enlarged detail views, respectively, of the vacuum cleaner nozzle 1.
  • the air duct wall 31 formed along the long sides 14, 15 of the suction opening 13 are typically, in prior art solutions, arranged to track the shape of the suction opening 13.
  • a prior art solution having sealing edges arranged as in the exemplifying embodiment described a above thus have the air duct wall 31 along the long sides formed as vertical sidewalls that projects the first primary sealing edge 19 and the second primary sealing edge 18.
  • first protrusion 32 is arranged along the second long side 15 of the suction opening 13, and extends along the lint picker 22.
  • the first protrusion 32 extends lenghtwise along the lint picker 22. This is preferable. However, in alternative embodiments the first protrusion 32 may extend along any portion or the whole lenght of the first primary sealing edge 19. Furthermore, the first protrusion 32 extends horizontally into the suction channel 13. The first protrusion 32 may extend between 0.5 to 40% of the width of the suction opening 13. However, preferably the first protrusion is chosen to extend between 0.5 to 10% of the width of the opening such that the suction opening 13 is not made too narrow.
  • the first protrusion 32 is displaced from the inlet side 11, inwards in the air duct 30 (and towards the outlet side 12) a predetermined distance.
  • the predetermined distance is set smaller or equal to 1 mm.
  • the predetermined distance is set to 0.3 mm.
  • the vacuum cleaner nozzle 1 is tilted such that the first primary sealing edge 19 loses contact (or contact pressure) with the surface being cleaned
  • a first secondary sealing edge which is formed by the first protrusion 32, and which in this situation is tilted into a closer position to the soft surface, promotes a retention of underpressure such that no sudden underpressure drop occurs.
  • the first secondary sealing edge becomes active as the vacuum cleaner nozzle 1 is tilted, and further if the surface being cleaned has irregularities protruding into the suction opening 13.
  • the first protrusion 32 is here displaced from the inlet side 11, inwards in the air duct 30. This way the first protrusion 32 does not obstruct the removal of the peeled off dust and fibres from the lint picker 22 when moving the vacuum cleaner nozzle 1 backwards.
  • the shape of the first protrusion 32 is in the exemplifying embodiment bevelled. This is advantageous since the bevelled shape provides little resistance during movement of the vacuum cleaner nozzle on the soft surface. Furthermore, the first protrusion is typically arranged to have the same curvature, or radius, as the first primary sealing edge 19. The exact behaviour of the reduction of sudden underpressure drops depends on the softness and curvature of the surface being cleaned, and the tilting angle of the vacuum cleaner nozzle 1.
  • the suction plate 10 has an elongated suction opening 13, which has two primary sealing edges 18 and 19.
  • the suction plate 10 is further provided with an elongated first protrusion 32 which is arranged on the air duct wall 31 of an air duct 30.
  • the suction plate 10 is further arranged having an elongated second protrusion 33, which is arranged on the opposite side air duct wall, with respect to the suction opening 13, of the first protrusion 32.
  • the suction plate 10 is arranged having a first secondary sealing edge formed by the first protrusion 32 and a second secondary sealing edge formed by the second protrusion 33.
  • the secondary sealing edges provide a less abrupt change in the underpressure and a smooth vacuuming is obtained for the benefit of the user.
  • the more constantly retained underpressure of the vacuum cleaner nozzle 1 also provides better dust removal ability as compared to a prior art vacuum cleaner nozzle.
  • the second protrusion 33 and the corresponding second secondary sealing edge has the same functionallity and possible embodiments as described above for the first protrusion 32 and the corresponding first secondary sealing edge.
  • the vacuum cleaner nozzle 1 is provided with the second protrusion 33 only.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Claims (7)

  1. Staubsaugerdüse, umfassend:
    eine Saugplatte (10) mit einer Einlassseite (11) und einer Auslassseite (12), wobei die Saugplatte Folgendes umfasst:
    einen Luftkanal (30) mit einer Kanalwand (31), wobei sich der Luftkanal durch die Saugplatte von einer Saugöffnung (13) auf der Einlassseite zu der Auslassseite erstreckt, und
    eine erste primäre Dichtungskante (19) zum Eingreifen in eine Oberfläche, die gereinigt wird, und zum mindestens teilweisen Abdichten der Saugöffnung (13) gegen die Oberfläche, die gereinigt wird, wobei sich die erste primäre Dichtungskante entlang mindestens eines Abschnitts einer Längsseite (15) der Saugöffnung erstreckt,
    mindestens einen Einlassendabschnitt der Kanalwand, die einen länglichen ersten Vorsprung (32) ausbildet, der eine erste sekundäre Dichtungskante bereitstellt, die sich entlang mindestens eines Abschnitts der ersten primären Dichtungskante erstreckt und die horizontal von der ersten primären Dichtungskante versetzt ist, dadurch gekennzeichnet, dass:
    der erste Vorsprung (32) von der Saugöffnung (13) vertikal um einen vorbestimmten Abstand ins Innere des Luftkanals versetzt ist.
  2. Staubsaugerdüse nach Anspruch 1, wobei die Saugöffnung (13) eine im Wesentlichen rechteckige Form hat, wobei der erste Vorsprung (32) in der Mitte der Längsseite (15) der Saugöffnung (13) angeordnet ist.
  3. Staubsaugerdüse nach Anspruch 1, wobei der vorbestimmte Abstand kleiner oder gleich 1 mm ist, vorzugsweise 0,3 mm.
  4. Staubsaugerdüse nach einem der vorangehenden Ansprüche, wobei der erste Vorsprung (32) angeordnet ist, um eines von stufenförmig, keilförmig und abgeschrägt zu sein.
  5. Staubsaugerdüse nach einem der vorangehenden Ansprüche, wobei sich der erste Vorsprung (32) horizontal zwischen 0,5 und 40 % der Breite der Saugöffnung (13) erstreckt.
  6. Staubsaugerdüse nach einem der vorangehenden Ansprüche, ferner umfassend mindestens einen Flusenaufheber (20, 22), wobei sich der Vorsprung (32) seitlich entlang des Flusenaufhebers erstreckt.
  7. Staubsaugerdüse nach Anspruch 2, ferner umfassend eine zweite primäre Dichtungskante (19), angeordnet an einer gegenüberliegenden Längsseite (14) der Saugöffnung (13), wobei ein zweiter länglicher Vorsprung (33) auf der gegenüberliegenden Längsseite (14) der Saugöffnung angeordnet ist und eine zweite sekundäre Dichtungskante bereitstellt, die sich entlang mindestens eines Teils der zweiten sekundären Dichtungskante erstreckt und die zur zweiten primären Dichtungskante horizontal versetzt ist.
EP09731968.5A 2008-04-17 2009-04-15 Staubsaugerdüse Active EP2276384B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0800885A SE532299C2 (sv) 2008-04-17 2008-04-17 Dammsugarmunstycke
US10872908P 2008-10-27 2008-10-27
PCT/SE2009/000189 WO2009128763A1 (en) 2008-04-17 2009-04-15 Vacuum cleaner nozzle

Publications (3)

Publication Number Publication Date
EP2276384A1 EP2276384A1 (de) 2011-01-26
EP2276384A4 EP2276384A4 (de) 2012-12-19
EP2276384B1 true EP2276384B1 (de) 2019-10-09

Family

ID=41199323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09731968.5A Active EP2276384B1 (de) 2008-04-17 2009-04-15 Staubsaugerdüse

Country Status (4)

Country Link
EP (1) EP2276384B1 (de)
CN (1) CN102006810B (de)
SE (1) SE532299C2 (de)
WO (1) WO2009128763A1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011081838A1 (de) 2010-11-05 2012-05-10 BSH Bosch und Siemens Hausgeräte GmbH Saugdüse, Verfahren zu deren Herstellung und damit ausgestatteter Staubsauger
DE102011077277A1 (de) * 2011-06-09 2012-12-13 BSH Bosch und Siemens Hausgeräte GmbH Saugdüse und Staubsauger
DE102011077265B4 (de) * 2011-06-09 2023-04-27 BSH Hausgeräte GmbH Saugdüse und Staubsauger
EP2752229A1 (de) * 2011-08-31 2014-07-09 ANT Corporation Saugvorrichtung für einen gewebefilter und filterungsvorrichtung damit
GB201208873D0 (en) * 2012-05-17 2012-07-04 Eaglestone Brian J Vacuum system
EP2975992B1 (de) * 2013-03-21 2018-08-08 Aktiebolaget Electrolux Saugmundstück für staubsauger mit abdichtungskante
CN105852739B (zh) * 2015-01-21 2018-08-28 科沃斯机器人股份有限公司 吸尘器地刷及其吸尘器
DE102016103974B4 (de) 2015-03-06 2022-07-28 Wessel-Werk Gmbh Saugdüse für Bodenstaubsauger
EP3313251B1 (de) * 2015-06-24 2019-10-02 AB Electrolux Staubsaugersaugdüse und staubsauger mit einer saugdüse
GB2542420B (en) * 2015-09-21 2018-01-10 Dyson Technology Ltd Cleaner head
US20220387912A1 (en) * 2021-06-08 2022-12-08 Greatpyr Resources Llc Apparatus, systems, and processes employing wet/dry suction filter with chicaned suction head

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US2921331A (en) 1955-12-27 1960-01-19 Filtex Corp Agitator for vacuum cleaner rug nozzles
DE7621523U1 (de) * 1976-07-07 1978-01-19 Wessel, Hans, 5226 Reichshof Gleitsohle fuer staubsaugerduesen
DE19900968C1 (de) * 1999-01-13 2000-01-13 Wessel Werk Gmbh Gleitsohle an einer Staubsaugerdüse
DE19906137C1 (de) * 1999-02-13 2000-07-20 Wessel Werk Gmbh Gleitsohle für eine Staubsaugerdüse
GB0023732D0 (en) * 2000-09-28 2000-11-08 Notetry Ltd A floor tool
GB0126494D0 (en) * 2001-11-03 2002-01-02 Dyson Ltd A floor tool
DE102006031486A1 (de) * 2006-07-07 2008-01-10 Wessel-Werk Gmbh Düse für Bodenstaubsauger

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
EP2276384A4 (de) 2012-12-19
EP2276384A1 (de) 2011-01-26
CN102006810B (zh) 2014-11-19
CN102006810A (zh) 2011-04-06
SE532299C2 (sv) 2009-12-08
SE0800885L (sv) 2009-10-18
WO2009128763A1 (en) 2009-10-22

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