EP0200957A1 - Suction cleaner nozzle - Google Patents

Suction cleaner nozzle Download PDF

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Publication number
EP0200957A1
EP0200957A1 EP86105129A EP86105129A EP0200957A1 EP 0200957 A1 EP0200957 A1 EP 0200957A1 EP 86105129 A EP86105129 A EP 86105129A EP 86105129 A EP86105129 A EP 86105129A EP 0200957 A1 EP0200957 A1 EP 0200957A1
Authority
EP
European Patent Office
Prior art keywords
tip
work
vacuum cleaner
work bar
center line
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.)
Granted
Application number
EP86105129A
Other languages
German (de)
French (fr)
Other versions
EP0200957B1 (en
Inventor
Frieder Dr. Voigt
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0200957A1 publication Critical patent/EP0200957A1/en
Application granted granted Critical
Publication of EP0200957B1 publication Critical patent/EP0200957B1/en
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to a vacuum cleaner mouthpiece which, with respect to the working direction, has, at least on its front side, a pivotable work bar which delimits the suction channel of the mouthpiece.
  • Such a vacuum cleaner mouthpiece is known from DE-GM 74 31 298.
  • the work bar consists of an elastic strip in the lower part. This enables perfect suction to a wall edge.
  • the elastic strip is pivoted in accordance with the respective direction of movement and assumes a curved shape.
  • the contact edge essentially slides over the carpet pile and does not penetrate it deep enough.
  • the invention has for its object to provide a vacuum cleaner mouthpiece in which the support edge of a pivotably arranged work bar comes into effect as optimally as possible despite the deflection thereof.
  • the adjacent to the surface to be cleaned support edge of the work bar opposite the suction channel is designed as an outwardly facing, projecting tip, the angle between the tangent to the center line of the tip and the center line of the vertical part of the working edge is an obtuse angle.
  • the work bar is pivoted backwards due to the frictional resistance with the carpet pile, so that the tip of the working edge comes into engagement with the carpet pile.
  • the tip is able to penetrate the carpet pile and open it accordingly for better access to the suction air.
  • a steep engagement of the tip necessary for the wide opening of the carpet pile is achieved in that the angle between the tangent to the center line of the tip and the center line of the vertical part of the work bar is 110 to 160 degrees.
  • a pivotable work bar is arranged on both sides of the suction channel and the contact edge of each work bar is designed as an outwardly projecting, protruding tip relative to the suction channel.
  • a work bar with the tip of its working edge comes into effect both in the forward and backward movement of the mouthpiece.
  • a rounded course of the contact edge towards the tip end contributes to reducing the sliding resistance, since the rear work bar in the respective direction of movement lies on the carpet pile with the rounded part of its working edge and thus glides over the carpet pile without any significant frictional resistance.
  • FIG. 1 shows a suction mouthpiece in the rest position and FIG. 2 shows a suction mouthpiece when pushed forward.
  • a suction mouthpiece With 1 the housing of a suction mouthpiece is referred to, to which a suction pipe 2 which can be connected to a vacuum cleaner is connected.
  • a work bar 5 or 6 is pivotally attached by means of an elastic hinge band 7.
  • the contact edge 8 of each work bar 5 or 6 is designed as a tip 10 which points outward relative to the suction channel 9.
  • the tip 10 of the work strips 5 and 6 protrudes from the plane of the vertical part of the work strips 5 and 6.
  • the work strips 5 and 6 can be formed as continuous strips and fastened to the mouthpiece housing 1 by means of an elastic connecting member. But there is also the possibility of dividing the work strips 5 and 6 into individual elastic tongues arranged side by side. Such tongues can be rigidly attached to the mouthpiece housing. The tongues are deflected due to their inherent elasticity. When the suction mouthpiece is moved, only individual tongues are bent in each case in accordance with the resistance forces which act in different ways across the width of the suction mouthpiece, and these springs spring back into their starting position when the respective resistance force decreases. Through this movement of the tongues, the carpet pile is continuously massaged and opened, so that the suction air can penetrate deeply into the carpet pile and carry along the dirt stored there. In addition, since not all tongues are deflected at the same time, the pushing force is significantly reduced.
  • the tangent 14 at the end of the tip 10 is applied to the dashed center line 13 of the tip 10.
  • the tangent 14 forms an obtuse angle ⁇ with the center line 15 of the vertical part of the work bar 5. It has proven to be particularly favorable that the angle ⁇ is in the range between 110 to 160 °.

Landscapes

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

Abstract

1. A vacuum cleaner nozzle which, relative to the working direction, is provided at least at its front side with a rigid working bar (5) bounding the suction passage (9) of the nozzle (1) of which the bearing edge adjacent to the area to be cleaned is formed as a point (10), characterised in that the working bar (5) is arranged so that it can tilt and has a flat part adjoining and angled to the point (10) and pointing outwardly relative to the suction passage (9), the angle (alpha) between the tangent (14) to the centre line (13) of the point (10) and the centre line (15) of the flat part of the working bar (5 or 6) being an obtuse angle in the range from 110 degrees to 160 degrees.

Description

Die Erfindung betrifft ein Staubsaugermundstück, das in Bezug auf die Arbeitsrichtung mindestens an seiner Vorderseite eine den Saugkanal des Mundstückes begrenzende, verschwenkbare Arbeitsleiste aufweist.The invention relates to a vacuum cleaner mouthpiece which, with respect to the working direction, has, at least on its front side, a pivotable work bar which delimits the suction channel of the mouthpiece.

Ein solches Staubsaugermundstück ist durch das DE-GM 74 31 298 bekannt. Bei diesem Mundstück besteht die Arbeitsleiste aus einem elastischen, im unteren Teil nach vom abgebogenen Streifen. Hierdurch wird ein einwandfreies Absaugen bis an einen Wandrand ermöglicht. Beim Hin-und Herbewegen des Mundstückes wird der elastische Streifen entsprechend der jeweiligen Bewegungsrichtung verschwenkt und nimmt eine gebogene Form an. Infolge der Durchbiegung des elastischen Streifens gleitet die Auflagekante im wesentlichen über den Teppichflor und dringt nicht mehr tief genug in diesen ein.Such a vacuum cleaner mouthpiece is known from DE-GM 74 31 298. With this mouthpiece, the work bar consists of an elastic strip in the lower part. This enables perfect suction to a wall edge. When the mouthpiece is moved back and forth, the elastic strip is pivoted in accordance with the respective direction of movement and assumes a curved shape. As a result of the deflection of the elastic strip, the contact edge essentially slides over the carpet pile and does not penetrate it deep enough.

Der Erfindung liegt die Aufgabe zugrunde, ein Staubsaugermundstück zu schaffen, bei dem die Auflagekante einer verschwenkbar angeordneten Arbeitsleiste trotz der Auslenkung derselben möglichst optimal zur Wirkung kommt.The invention has for its object to provide a vacuum cleaner mouthpiece in which the support edge of a pivotably arranged work bar comes into effect as optimally as possible despite the deflection thereof.

Die Lösung der gestellten Aufgabe gelingt nach der Erfindung dadurch, daß die der zu reinigenden Fläche benachbarte Auflagekante der Arbeitsleiste gegenüber dem Saugkanal als nach , außen weisende, vorstehende Spitze ausgebildet ist, wobei der Winkel zwischen der Tangente an die Mittellinie der Spitze und der Mittellinie des senkrechten Teiles der Arbeitskante ein stumpfer Winkel ist. Beim Vorwärtsschieben des Mundstückes wird die Arbeitsleiste infolge des Reibungswiderstandes mit dem Teppichflor nach hinten verschwenkt, so daß die Spitze der Arbeitskante mit dem Teppichflor in Eingriff kommt. Die Spitze vermag in den Teppichflor einzudringen und diesen für einen besseren Zugang der Saugluft entsprechend zu öffnen. Hierbei wird ein für das weite Öffnen des Teppichflores notwendiger steiler Eingriff der Spitze dadurch erreicht, daß der Winkel zwischen der Tangente an die Mittellinie der Spitze und der Mittellinie des senkrechten Teiles der Arbeitsleiste 110 bis 160 Grad beträgt.The solution to the problem is achieved according to the invention in that the adjacent to the surface to be cleaned support edge of the work bar opposite the suction channel is designed as an outwardly facing, projecting tip, the angle between the tangent to the center line of the tip and the center line of the vertical part of the working edge is an obtuse angle. When pushing the mouthpiece forward, the work bar is pivoted backwards due to the frictional resistance with the carpet pile, so that the tip of the working edge comes into engagement with the carpet pile. The tip is able to penetrate the carpet pile and open it accordingly for better access to the suction air. Here, a steep engagement of the tip necessary for the wide opening of the carpet pile is achieved in that the angle between the tangent to the center line of the tip and the center line of the vertical part of the work bar is 110 to 160 degrees.

Besonders vorteilhaft ist, daß zu beiden Seiten des Saugkanals jeweils eine verschwenkbare Arbeitsleiste angeordnet und die Auflagakante jeder Arbeitsleiste gegenüber dem Saugkanal als nach außen weisende, vorstehende Spitze ausgebildet ist. Dadurch kommt sowohl bei der Vorwärts-als auch Rückwärtsbewegung des Mundstückes jeweils eine Arbeitsleiste mit der Spitze ihrer Arbeitskante zur Wirkung. Dabei trägt ein abgerundeter Verlauf der Auflagekante zum Spitzenende hin zur Verminderung des Schiebewiderstandes bei, da die in der jeweiligen Bewegungsrichtung jeweils hintere Arbeitsleiste mit dem abgerundeten Teil ihrer Arbeitskante auf dem Teppichflor aufliegt und dadurch ohne nennenswerten Reibungswiderstand über den Teppichflor gleitet.It is particularly advantageous that a pivotable work bar is arranged on both sides of the suction channel and the contact edge of each work bar is designed as an outwardly projecting, protruding tip relative to the suction channel. As a result, a work bar with the tip of its working edge comes into effect both in the forward and backward movement of the mouthpiece. A rounded course of the contact edge towards the tip end contributes to reducing the sliding resistance, since the rear work bar in the respective direction of movement lies on the carpet pile with the rounded part of its working edge and thus glides over the carpet pile without any significant frictional resistance.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird der Anmeldungsgegenstand nachfolgend näher beschrieben.The subject of the application is described in more detail below using an exemplary embodiment shown in the drawing.

In einer Schnittdarstellung zeigt die Fig. 1 ein Saugmundstück in Ruhestellung und Fig. 2 ein Saugmundstück beim Vorwärtsschieben.In a sectional view, FIG. 1 shows a suction mouthpiece in the rest position and FIG. 2 shows a suction mouthpiece when pushed forward.

Fig. 3 zeigt in vergrößerter Darstellung eine Arbeitsleiste.3 shows an enlarged work bar.

Mit 1 ist das Gehäuse eines Saugmundstückes bezeichnet, an das ein mit einem Staubsauger verbindbares Saugrohr 2 angeschlossen ist. Sowohl an der Vorderwand 3 als auch an der Rückwand 4 des Mundstückgehäuses 1 ist jeweils eine Arbeitsleiste 5 bzw. 6 mittels eines elastischen Scharnierbandes 7 verschwenkbar befestigt. Die Auflagekante 8 jeder Arbeitsleiste 5 bzw. 6 ist als gegenüber dem Saugkanal 9 nach außen weisende Spitze 10 ausgebildet. Die Spitze 10 der Ärbeitsleisten 5 und 6 steht gegenüber der Ebene des senkrechten Teiles der Arbeitsieisten 5 und 6 vor.With 1 the housing of a suction mouthpiece is referred to, to which a suction pipe 2 which can be connected to a vacuum cleaner is connected. Both on the front wall 3 and on the rear wall 4 of the mouthpiece housing 1, a work bar 5 or 6 is pivotally attached by means of an elastic hinge band 7. The contact edge 8 of each work bar 5 or 6 is designed as a tip 10 which points outward relative to the suction channel 9. The tip 10 of the work strips 5 and 6 protrudes from the plane of the vertical part of the work strips 5 and 6.

Die Fig. 2 zeigt die Stellung der Arbeitsleisten 5 und 6, wenn das Saugmundstück in der durch einen Pfeil 11 angedeuteten Richtung bewegt wird. Die Arbeitsleisten 5 und 6 werden infolge ihrer elastischen Verbindung mit dem Mundstückgehäuse 1 entgegen der Bewegungsrichtung des Mundstückes ausgelenkt. Infolge dieser Auslenkung greift die Spitze 10 der in der Bewegungsrichtung vorderen Arbeitsleiste 5 in den Teppichflor 12 ein. Die Spitze 10 der Arbeitsleiste 5 dringt hierbei tief in den Teppichflor 12 ein und öffnet diesen entsprechend weit, so daß die durch den Saugkanal 9 strömende Luft entsprechend tief in den Teppichflor 12 eindringen kann. Die in Bezug auf die Bewegungsrichtung hintere Arbeitsleistung 6 liegt infolge des Ausschwenkens mit der abgerundeten Seite der Auflagekante 8 auf dem Teppichflor 12 auf. Dadurch gleitet diese Arbeitsleiste 6 ohne nennenswerten Widerstand über den Teppichflor 12.2 shows the position of the work strips 5 and 6 when the suction mouthpiece is moved in the direction indicated by an arrow 11. The work strips 5 and 6 are deflected due to their elastic connection with the mouthpiece housing 1 against the direction of movement of the mouthpiece. As a result of this deflection, the tip 10 of the front work bar 5 in the direction of movement engages in the carpet pile 12. The tip 10 of the work bar 5 penetrates deeply into the carpet pile 12 and opens it accordingly, so that the air flowing through the suction channel 9 can penetrate deeply into the carpet pile 12. The work performance 6, which is at the rear with respect to the direction of movement, lies on the carpet pile 12 due to the swung-out with the rounded side of the support edge 8. As a result, this work bar 6 slides over the carpet pile 12 without any appreciable resistance.

Die Arbeitsleisten 5 und 6 können als durchgehende Leisten ausgebildet und mittels eines elastischen Verbindungsgliedes an dem Mundstückgehäuse 1 befestigt sein. Es besteht aber auch die Möglichkeit, die Arbeitsleisten 5 und 6 in einzelne elastische, nebeneinander angeordnete Zungen zu unterteilen. Derartige Zungen können starr an dem Mundstückgehäuse befestigt werden. Die Auslenkung der Zungen erfolgt aufgrund ihrer Eigenelastizität. Beim Bewegen des Saugmundstückes werden entsprechend der über die Breite des Saugmundstückes partiell unterschiedlich wirkenden Widerstandskräfte jeweils immer nur einzelne Zungen umgebogen, die beim Nachlassen der jeweiligen Widerstandskraft wieder in ihre Ausgangsstellung zurückfedern. Durch diese Bewegung der Zungen wird der Teppichflor fortlaufend massiert und dabei geöffnet, so daß die Saugluft tief in den Teppichflor eindringen und den dort lagernden Schmutz mitführen kann. Da außerdem nicht alle Zungen gleichzeitig ausgelenkt werden, ergibt sich eine wesentliche Reduzierung der Schiebekraft.The work strips 5 and 6 can be formed as continuous strips and fastened to the mouthpiece housing 1 by means of an elastic connecting member. But there is also the possibility of dividing the work strips 5 and 6 into individual elastic tongues arranged side by side. Such tongues can be rigidly attached to the mouthpiece housing. The tongues are deflected due to their inherent elasticity. When the suction mouthpiece is moved, only individual tongues are bent in each case in accordance with the resistance forces which act in different ways across the width of the suction mouthpiece, and these springs spring back into their starting position when the respective resistance force decreases. Through this movement of the tongues, the carpet pile is continuously massaged and opened, so that the suction air can penetrate deeply into the carpet pile and carry along the dirt stored there. In addition, since not all tongues are deflected at the same time, the pushing force is significantly reduced.

Bei der vergrößerten Darstellung der Arbeitsleiste 5 in Fig. 3 ist an die gestrichelt eingetragene Mittellinie 13 der Spitze 10 die Tangente 14 am Ende der Spitze 10 angelegt. Die Tangente 14 bildet mit der Mittellinie 15 des senkrechten Teiles der Arbeitsleiste 5 einen stumpfen Winkel α . Es hat sich als besonders günstig erwiesen, daß der Winkel α im Bereich zwischen 110 bis 160° liegt.In the enlarged representation of the work bar 5 in FIG. 3, the tangent 14 at the end of the tip 10 is applied to the dashed center line 13 of the tip 10. The tangent 14 forms an obtuse angle α with the center line 15 of the vertical part of the work bar 5. It has proven to be particularly favorable that the angle α is in the range between 110 to 160 °.

Claims (5)

1) Staubsaugermundstück, das in Bezug auf die Arbeitsrichtung mindestens an seiner Vorderseite eine den Saugkanal (9) begrenzende, verschwenkbare Arbeitsleiste (5) aufweist,
dadurch gekennzeichnet,
daß die der zu reinigenden Fläche benachbarte Auflagekante (8) der Arbeitsleiste (5) gegenüber dem Saugkanal (9) als nach außen weisende, vorstehende Spitze (10) ausgebildet ist, wobei der Winkel (a) zwischen der Tangente (14) an die Mittellinie (13) der Spitze (10) und der Mittellinie (15) des senkrechten Teiles der Arbeitsleiste (5 bzw. 6) ein stumpfer Winkel ist.1) Vacuum cleaner mouthpiece which, in relation to the working direction, has at least on its front side a pivotable work bar (5) which delimits the suction channel (9),
characterized,
that the support edge (8) of the work bar (5) adjacent to the surface to be cleaned is designed as an outwardly projecting, protruding tip (10) with respect to the suction channel (9), the angle (a) between the tangent (14) to the center line (13) the tip (10) and the center line (15) of the vertical part of the work bar (5 and 6) is an obtuse angle. 2) Staubsaugermundstück nach Anspruch 1,
dadurch gekennzeichnet,
daß der Winkel (α) zwischen der Tangente (14) an die Mittellinie (13) der Spitze (10) und der Mittellinie (15) des senkrechten Teiles der Arbeitsleiste (5 bzw. 6) 110 bis 160° beträgt.2) vacuum cleaner mouthpiece according to claim 1,
characterized,
that the angle (α) between the tangent (14) to the center line (13) of the tip (10) and the center line (15) of the vertical part of the work bar (5 or 6) is 110 to 160 °. 3) Staubsaugermundstück nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß zu beiden Seiten des Saugkanals (9) jeweils eine verschwenkbare Arbeitsleiste (5 bzw. 6) angeordnet und die Auflagekante (8) jeder Arbeitskante (5 bzw. 6) gegenüber dem Saugkanal (9) als nach außen weisende, vorstehende Spitze (10) ausgebildet ist.3) vacuum cleaner mouthpiece according to claim 1 or 2,
characterized,
that on both sides of the suction channel (9) a pivotable work bar (5 or 6) is arranged and the support edge (8) of each work edge (5 or 6) with respect to the suction channel (9) as an outwardly projecting tip (10) is trained. 4) Staubsaugermundstück nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet,
daß die Auflagekante (8) zum Ende der Spitze (10) hin gerundet verläuft.4) vacuum cleaner mouthpiece according to claim 1, 2 or 3,
characterized,
that the support edge (8) is rounded towards the end of the tip (10). 5) Staubsaugermundstück nach einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Arbeitsleisten (5 und 6) durch senkrechte Schlitze in einzelne elastische Zungen unterteilt sind.5) vacuum cleaner mouthpiece according to one or more of the preceding claims,
characterized,
that the work strips (5 and 6) are divided by vertical slots into individual elastic tongues.
EP86105129A 1985-04-24 1986-04-14 Suction cleaner nozzle Expired EP0200957B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8512173U DE8512173U1 (en) 1985-04-24 1985-04-24 Vacuum cleaner mouthpiece
DE8512173U 1985-04-24

Publications (2)

Publication Number Publication Date
EP0200957A1 true EP0200957A1 (en) 1986-11-12
EP0200957B1 EP0200957B1 (en) 1989-04-19

Family

ID=6780323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105129A Expired EP0200957B1 (en) 1985-04-24 1986-04-14 Suction cleaner nozzle

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Country Link
EP (1) EP0200957B1 (en)
DE (2) DE8512173U1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2840180A1 (en) * 2002-06-03 2003-12-05 Seb Sa VACUUM CLEANER WITH SCRAPER
EP1997413A3 (en) * 2007-05-28 2015-08-26 Samsung Electronics Co., Ltd. Suction brush for vacuum cleaner
US10307028B2 (en) 2016-02-12 2019-06-04 Dyson Technology Limited Cleaner head for a vacuum cleaner

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201596C2 (en) * 1992-01-22 2001-07-05 Gerhard Kurz Floor nozzle for vacuum cleaners
DE19900557C2 (en) * 1999-01-09 2002-06-06 Wessel Werk Gmbh Suction head for vacuum cleaner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB391607A (en) * 1932-04-27 1933-05-04 Hoover Co Improvements in or relating to suction cleaners
DE668835C (en) * 1937-01-08 1938-12-10 Anna Hempel Mouthpiece for vacuum cleaner
DE671420C (en) * 1937-03-21 1939-02-07 Handstaubsauger G M B H Suction mouthpiece for vacuum cleaner
GB855613A (en) * 1958-09-18 1960-12-07 Hoover Ltd Improvements relating to suction nozzles
US3135986A (en) * 1963-03-18 1964-06-09 Joe E Tolin Vacuum cleaning tool
FR2044749A2 (en) * 1969-04-28 1971-02-26 Hoover Ltd

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB391607A (en) * 1932-04-27 1933-05-04 Hoover Co Improvements in or relating to suction cleaners
DE668835C (en) * 1937-01-08 1938-12-10 Anna Hempel Mouthpiece for vacuum cleaner
DE671420C (en) * 1937-03-21 1939-02-07 Handstaubsauger G M B H Suction mouthpiece for vacuum cleaner
GB855613A (en) * 1958-09-18 1960-12-07 Hoover Ltd Improvements relating to suction nozzles
US3135986A (en) * 1963-03-18 1964-06-09 Joe E Tolin Vacuum cleaning tool
FR2044749A2 (en) * 1969-04-28 1971-02-26 Hoover Ltd

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2840180A1 (en) * 2002-06-03 2003-12-05 Seb Sa VACUUM CLEANER WITH SCRAPER
EP1369074A1 (en) * 2002-06-03 2003-12-10 Seb S.A. Suction nozzle with scraping device
EP1997413A3 (en) * 2007-05-28 2015-08-26 Samsung Electronics Co., Ltd. Suction brush for vacuum cleaner
US10307028B2 (en) 2016-02-12 2019-06-04 Dyson Technology Limited Cleaner head for a vacuum cleaner

Also Published As

Publication number Publication date
EP0200957B1 (en) 1989-04-19
DE3662833D1 (en) 1989-05-24
DE8512173U1 (en) 1986-08-21

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