US3660864A - Multi-purpose suction cleaner nozzle - Google Patents

Multi-purpose suction cleaner nozzle Download PDF

Info

Publication number
US3660864A
US3660864A US7704A US3660864DA US3660864A US 3660864 A US3660864 A US 3660864A US 7704 A US7704 A US 7704A US 3660864D A US3660864D A US 3660864DA US 3660864 A US3660864 A US 3660864A
Authority
US
United States
Prior art keywords
diaphragm
nozzle
brush
toggle joint
operating surface
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.)
Expired - Lifetime
Application number
US7704A
Other languages
English (en)
Inventor
Osten Schwartz
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
Application granted granted Critical
Publication of US3660864A publication Critical patent/US3660864A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • 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
    • A47L9/0633—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads
    • A47L9/064—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads actuating means therefor
    • A47L9/0646—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads actuating means therefor with pneumatic actuation

Definitions

  • This invention relates to a multi-purpose suction cleaner nozzle having a suction inlet which is movable over a rug to remove dirt therefrom.
  • a brush for removing dirt from a floor is mounted on a diaphragm for movement between upper and lower positions at the vicinity of the suction inlet, the diaphragm forming a wall of a space in communication with a passageway leading to the suction inlet and in which a partial vacuum is developed during operation of the nozzle.
  • a spring acting on the diaphragm tends to bias the brush to its lower position below the suction inlet responsive to a first partial vacuum developed in the space when a floor is cleaned by the nozzle and the air flow therethrough exceeds a predetermined speed.
  • a second higher partial vacuum is developed in the space when a rug is cleaned by the nozzle and the air flow therethrough is at or less than the predetermined speed, such higher vacuum overcoming the biasing action of the spring .and moving the brush to its upper position at or above the suction inlet.
  • a vertical toggle joint is pivotally connected at its opposite ends to a wall of the space and to the diaphragm and the bend of the toggle is moved horizontally responsive to vertical movement of the diaphragm.
  • the diaphragm moves upward it causes the toggle bend to move in one direction through dead center to promote movement of the brush to its upper position;
  • This invention relates to a multi-purpose suction .cleaner nozzle having a suction inlet and a brush mounted for movement on the nozzle between upper and lower positions, the brush in its upper position being at or above the suction inlet and in its lower position below the suction inlet.
  • the suction inlet When the brush is in its upper position the suction inlet is rendered operable to remove dust and dirt from porous objects like carpets and rugs.
  • the brush is rendered operable to remove dust and dirt from non-porous objects like floors.
  • the brush is moved pneumatically between its upper and lower positions by a rubber diaphragm to which the brush is connected, such diaphragm forming a wall of a space in communication with the path of air flow of the nozzle which is at a partial vacuum. Due to the partial vacuum developed in the nozzle during normal use, which varies in accordance with the physical characteristics of the object over which the nozzle is moved, the diaphragm will flex to its upper or lower positions and move the brush to its upper or lower positions on the nozzle. The diaphragm is flexed to its lower position with the aid of a spring.
  • My invention relates to a multi-purpose suction cleaner nozzle which may be employed for different types of cleaning.
  • One factor which influences dust absorption is the speed of the air flow through the nozzle for bodily moving and transporting dust and dirt particles from the object to be cleaned to the dust bag in the suction cleaner.
  • movement is imparted to a particle of dust or dirt by a force which is dependent upon positive atmospheric pressure at one side of the particle and a pressure at the opposite side thereof which is at a partial vacuum and below atmospheric pressure.
  • movement is imparted pneumatically to dust and dirt particles by a force which is dependent upon the difference between atmospheric pressure and the vacuum developed by the cleaner.
  • the speed of the air flow increases with increase in the volume of air moved.
  • the capacity of brushes and nozzles working on objects is a primary and basic consideration which determines the ability of a suction cleaner to absorb dust and dirt.
  • a brush When brushes are employed to suck and draw dust particles from essentially smooth objects like floors, for example, the pneumatic force just referred to is not as great as it is when a porous object is being cleaned.
  • a brush In cleaning porous objects like carpets, for example, a brush generally is not employed and instead a nozzle is employed having an operating surface which is at the immediate vicinity of the suction inlet opening and disposed about the latter.
  • a spring acting on the diaphragm tends to bias the brush to its lower position below the suction inlet responsive to a first partial vacuum developed in the space when an object having a smooth surface is being cleaned.
  • a second higher partial vacuum is developed in the space when a porous object like a rug is being cleaned, such higher vacuum overcoming the biasing action of the spring and moving the brush to its upper position at or above the suction inlet.
  • I provide a toggle joint in the space which is pivotally connected at its upper end to a wall of the space and at its lower end to the diaphragm and the bend of which is arranged to move horizontally responsive to vertical movement of the diaphragm.
  • the diaphragm moves upward it causes the toggle bend to move in one direction through dead center to promote movement of the brush to its upper position; and when the diaphragm moves downward with the aid of the spring, it causes the toggle bend to move in the opposite direction to a stable position near dead center at which the toggle joint and bnish function to support the nozzle when a floor is cleaned.
  • FIG. 1 is a vertical sectional view of a multi-purpose suction cleaner nozzle embodying my invention
  • FIG. 2 is a sectional view generally similar to FIG. 1 showing parts in different positions with respect to one another;
  • FIG. 3 is a fragmentary top perspective view of interior parts of the nozzle shown in FIGS. 1 and 2;
  • FIG. 4 is an end view partly broken away and in section of the nozzle shown in FIGS. 1, 2 and 3;
  • FIG. 5 is a top plan view ofdetails seen in FIGS. 1,2 and 3.
  • the multi-purpose suction cleaner nozzle embodying my invention comprises an elongated hollow body 9 which comprises top and bottom parts 10 and 11, respectively, having a flexible diaphragm l3 therebetween to provide top and bottom spaces 24a and 24b, respectively.
  • the top and bottom parts 10 and 11 are detachably connected together in any suitable manner (not shown).
  • the peripheral edge portion of the diaphragm 13 is clamped between the abutting outer edges of the body parts 10 and I1 and formed with an enlarged head 14 which serves as a bumper to protect objects against which the nozzle 9 may strike when being moved back and forth over a surface being cleaned.
  • the diaphragm l3 desirably is formed of a suitable elastomeric material like rubber, for example.
  • the hollow body 9 is provided with an upwardly inclined tubular member 12.
  • the tubular member 12 serves as an outlet socket adapted to be connected to a source of supply of air at a partial vacuum, such as a suction cleaner, for example.
  • the outlet socket 12 forms part of a passageway through which air is drawn from an elongated air inlet 16 at the bottom of the nozzle.
  • the air inlet 16 which may be referred to as a suction inlet, comprises a plurality of open grooves 16a which are adjacent to one another and formed in the bottom of a flat part 11a of the bottom plate 11.
  • the open grooves 16a are defined by spaced ribs 11b which depend downward from the flat part 11a of the bottom plate 1 I.
  • the passageway for flowing air from the suction inlet 16 to the outlet socket 12 may be provided in any suitable manner.
  • the bottom of the flat part 11a of the bottom plate 11 may be provided with an open groove 16b which is intermediate the ends of the grooves 16a and intersects the latter.
  • the suction effect produced in the outlet socket 12 by a suction cleaner can be transmitted through a connection 8 to the open grooves 16b and 16a, as shown in FIG. 3.
  • the outlet socket 12 and top part 10 of the hollow body 9 are apertured at 8, as diagrammatically shown in FIG. 4, to establish communication between the top space 24a and the passageway for flowing air from the suction inlet 16 to the outlet socket 12 and from the latter to a suction cleaner (not shown) which is adapted to be connected to the outlet socket in a conventional manner.
  • One or more apertures 8' may be distributed in the air passageway leading to the suction inlet 16.
  • the part 11a of the bottom plate 11 provides an operating surface of the nozzle to perform a specific type of cleaning of porous objects like a carpet or rug 7, for example, which is shown in FIG. 2.
  • Air is drawn to the air outlet socket 12 from the suction inlet 16 in a path of flow which includes the open grooves 16a and 16b and connection 8.
  • a four-sided brush 18 of annular form is disposed at the vicinity of the suction inlet 16.
  • the brush 18, which comprises parallel sides 18a and 18b and connecting ends 18c, includes bristles 18d fixed to a brush back 182 of annular form, as shown in FIG. 3.
  • the sides 18a and 18b of brush 18 are held at 170 and 17b at the underside ofa brush support 17 to which is fixed an arm or lever 19 angularly movable at 20a on a shaft 20 fixed to the bottom body part 11 in any suitable manner.
  • the brush support 17 and angularly movable arm 19 forming a unitary part of such support are angularly movable in the bottom space 24b below the diaphragm 13.
  • the diaphragm 13 is formed with a cup-shaped portion which receives the open cup-shaped member 21.
  • the member 21, which snugly nests in the cup-shaped portion of the diaphragm 13, is provided with a flange 22 at its open end.
  • the cup-shaped portion of the diaphragm 13 is clamped in any suitable manner (not shown) between the flange 22 and vertical walls 17:: of the brush support 17.
  • the brush support 17, cupshaped portion of the diaphragm 13 and cup-shaped member 21 form a unitary component of the nozzle and are angularly movable as a unit when angular movement is imparted to the arm or lever 19.
  • the diaphragm 13 is provided with a corrugated section 23 of annular form which is closely adjacent to the flange 22.
  • the bottom plate 11 is apertured at lie to receive the brush bristles 18d which move between upper and lower positions with respect to the suction inlet 16.
  • the part 11a of the bottom plate 11 functions to effect cleaning of porous objects like a rug or carpet, for example, as explained above.
  • the brush 18 is in its lower position below the suction inlet 16, the brush is adapted to efi'ect cleaning of non-porous objects like a floor 6, for example, as shown in FIG. 1.
  • a coil spring 25 is provided in the top space 24a with its upper end bearing against the top part 10 of the nozzle body and its lower end bearing against the bottom 26 of the cup-shaped member 21. Hence, the spring 25 tends to urge the brush 18 to its lower position shown in FIG. 1.
  • a partial vacuum of a first magnitude will be developed in the top space 24a when the air flow from the suction inlet 16 to the outlet socket 12 past the one or more apertures 8 exceeds a predetermined speed.
  • the partial vacuum in the top space 24a will be ineffective to overcome the biasing action of the spring 25 and the latter will act on the diaphragm 13 and tend to move the brush l8 downward to the position shown in FIG. 1.
  • the brush 18 engages the floor 6, dust and dirt will be drawn into the suction inlet 16 by a pneumatic force which is dependent upon the difference between atmospheric pressure and the vacuum or suction developed at the suction inlet 16 by the suction cleaner.
  • the dust and dirt When the nozzle is moved over a porous object like the carpet 7 in FIG. 2, the dust and dirt must be sucked or drawn from the pores of the object and the pneumatic force just referred to must be greater to bodily move the dust and dirt particles into the suction inlet 16. This force is dependent upon positive atmospheric pressure at one side of the dust particles and a pressure at the opposite side thereof which is below atmospheric pressure.
  • a partial vacuum of a second magnitude will be developed in the space 240 which exceeds the aforementioned first magnitude when the air flow from the suction inlet 16 to the outlet socket 12 past the one or more apertures 8 is at or less than the aforementioned predetermined speed.
  • the partial vacuum in the top space 24a will be effective to overcome the biasing action of the spring 25 and move the diaphragm 13 upward which in turn can raise the brush 18 from the position shown in FIG. 1 to a position above the suction inlet 16 in which the brush moves to its non-cleaning position.
  • I provide structure which becomes operable, with the aid of the spring 25, to effect movement of the brush 18 from its upper to its lower position shown in FIG. 1 when the nozzle is employed to clean a floor or other smooth surface after it has been employed to clean a carpet or rug.
  • This structure comprises linkage mechanism LM including a top link'27 and a bottom link 28 pivotally connected to one another at 29.
  • the top link 27 is pivotally connected at 32 to the underside of the top part 10 of the body 9, and the bottom link 28 extends downward into the cup-shaped member 21 and is fixed at 33 to the bottom 26 thereof. It will now be evident that the links 27 and 28 form a toggle joint having its bend at 29.
  • the bottom link 28 is provided with an arm 30 which extends from the upper end thereof toward the corrugated section 23 of the diaphragm 13 and is provided with a flat end part 31 which overlies the corrugated section 23 when the brush 18 is in its lower position, as shown in FIG. 1.
  • the bottom link 28 and arm 30, which is more or less at a right angle thereto, form an L-shaped member.
  • the toggle joint formed by the linkage mechanism LM is in a stable position with the links 27 and 28 more or less vertical. Under these conditions, the load on the nozzle, with the aid of the links 27 and 28, is supported by the brush 18.
  • the links 27 and 28 will only deflect a slight amount from their vertical positions shown in FIG. 1 because such deflecting movement will be prevented by the arm 30 which has its outer end part 31 contacting the corrugated section 23 of the diaphragm 13. With this arrangement the linkage mechanism LM and brush 18 will tend to remain in their positions shown in FIG. 1 when the load on the nozzle is increased.
  • the arm 30 and outer end part 31 desirably are so constructed and formed that, when the diaphragm 13 flexes upward due to the second higher partial vacuum developed in the top space 24a, only an extremely small upward movement of the arm 30 will be effective to shift the pivotal connection 29 from one side to the opposite side of dead center in the manner just explained. Even when the linkage mechanism LM is required to transmit a very great load from the nozzle body 9 to the brush 18, the proper construction of the arm 30 and outer end part 31 effects the aforementioned shifting of dead center of the pivotal connection 29 responsive to a relatively small force imparted by section 23 of the diaphragm 13.
  • the nozzle body 9 can be formed of light-weight material and the toggle joint or linkage mechanism LM, with it operating arm 30, can be so dimensioned that the links 27 and 28 will, with the aid of the biasing action of the spring 25, automatically move from their deflected positions to their more or less vertical positions in FIG. 1 providing the nozzle is not subjected to additional downward force when the links 27 and 28 are shifting from their positions in FIG. 2 to their positions in FIG. 1.
  • the nozzle can, of course, be subjected to a great load.
  • the nozzle embodying my invention can be so constructed and formed that, when the brush 18 has been moved to its upper position to what would normally be a non-cleaning position, one side of the brush 18 can be at such a level that the tips of the bristles 18d lightly contact the rug 7 at 34, as shown in FIG. 2.
  • a multi-purpose suction nozzle comprising structure including first and second operating surfaces for performing different types of cleaning, means for mounting said second operating surface on said structure to reciprocate between upper and lower positions with respect to said first operating surface, pneumatically operable shifting means, said structure including a stationary part, means comprising a toggle joint operatively connecting said stationary part and said second operating surface, means for applying force to the bend of said toggle joint responsive to movement of said shifting means to move said second operating surface to its upper position, said toggle joint having at least one stable position, and means including said toggle joint in said stable position and said second operating surface for supporting the nozzle when said second operating surface is in its lower position and functioning to clean an object with which it is in contact.
  • a suction nozzle as set forth in claim 3 in which said element comprises an elongated member in which the part thereof most removed from the bend of said toggle joint is in the path of movement of said shifting means at least in said stable position of said toggle joint.
  • a suction nozzle as set forth in claim 5 in which said part of said elongated member most removed from the bend of said toggle joint comprises a flat part which, in the stable position of said toggle joint, bears against a region of said diaphragm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
US7704A 1969-02-06 1970-02-02 Multi-purpose suction cleaner nozzle Expired - Lifetime US3660864A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE01562/69A SE334716B (enrdf_load_stackoverflow) 1969-02-06 1969-02-06

Publications (1)

Publication Number Publication Date
US3660864A true US3660864A (en) 1972-05-09

Family

ID=20258414

Family Applications (1)

Application Number Title Priority Date Filing Date
US7704A Expired - Lifetime US3660864A (en) 1969-02-06 1970-02-02 Multi-purpose suction cleaner nozzle

Country Status (7)

Country Link
US (1) US3660864A (enrdf_load_stackoverflow)
JP (1) JPS491105B1 (enrdf_load_stackoverflow)
DE (1) DE2003180A1 (enrdf_load_stackoverflow)
FR (1) FR2030332B1 (enrdf_load_stackoverflow)
GB (1) GB1289468A (enrdf_load_stackoverflow)
NL (1) NL7001640A (enrdf_load_stackoverflow)
SE (1) SE334716B (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768114A (en) * 1970-09-09 1973-10-30 Electrolux Ab Combination rug and floor vacuum cleaner nozzle
US3798704A (en) * 1971-02-26 1974-03-26 Electrolux Ab Self-acting combination rug and floor vacuum cleaner nozzle
US3913168A (en) * 1972-11-22 1975-10-21 Electrolux Ab Multi-purpose vacuum cleaner nozzle
US5553349A (en) * 1994-02-21 1996-09-10 Aktiebolaget Electrolux Vacuum cleaner nozzle
EP1520504A1 (fr) * 2003-10-01 2005-04-06 Seb S.A. Suceur d'aspirateur
CN1298278C (zh) * 2003-02-20 2007-02-07 维斯尔-韦克有限公司 用于地板和地毯的真空吸尘器管嘴
US20100229339A1 (en) * 2009-03-12 2010-09-16 Dyson Technology Limited Surface treating head
US20100319159A1 (en) * 2009-06-17 2010-12-23 Dyson Technology Limited Tool for a surface treating appliance
US20110010886A1 (en) * 2009-07-16 2011-01-20 Dyson Technology Limited Surface treating head
US20110010890A1 (en) * 2009-07-16 2011-01-20 Dyson Technology Limited Surface treating head
US20110119861A1 (en) * 2009-11-25 2011-05-26 Bissell Homecare, Inc. Pivoting extractor nozzle

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE328678B (enrdf_load_stackoverflow) * 1969-11-28 1970-09-21 Electrolux Ab
SE394942B (sv) * 1975-11-06 1977-07-25 Electrolux Ab Anordning vid ett dammsugningsmunstycke
FR2610187B1 (fr) * 1987-02-04 1991-11-08 Hoover Plc Accessoire d'entretien du sol pour aspirateur
SE505115C2 (sv) * 1995-10-27 1997-06-30 Electrolux Ab Dammsugarmunstycke innefattande ett borstmunstycke och förfarande för att åstadkomma sugning utefter borstmunstyckets, i rörelseriktningen sett, främre kant
DE102008012889B4 (de) * 2008-03-06 2012-04-19 Wessel-Werk Gmbh Saugdüse für Bodenstaubsauger
DE102008015904B4 (de) * 2008-03-27 2013-01-17 Wessel-Werk Gmbh Saugdüse für Bodenstaubsauger
EP2453778B1 (en) * 2009-07-16 2015-04-29 Dyson Technology Limited A surface treating head
CN207979621U (zh) 2017-01-17 2018-10-19 美国iRobot公司 移动清洁机器人

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526419A (en) * 1945-06-16 1950-10-17 Gen Motors Corp Brush adjusting system
US3497903A (en) * 1966-11-28 1970-03-03 Electrolux Ab Self-adjusting multipurpose nozzle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526419A (en) * 1945-06-16 1950-10-17 Gen Motors Corp Brush adjusting system
US3497903A (en) * 1966-11-28 1970-03-03 Electrolux Ab Self-adjusting multipurpose nozzle

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768114A (en) * 1970-09-09 1973-10-30 Electrolux Ab Combination rug and floor vacuum cleaner nozzle
US3798704A (en) * 1971-02-26 1974-03-26 Electrolux Ab Self-acting combination rug and floor vacuum cleaner nozzle
US3913168A (en) * 1972-11-22 1975-10-21 Electrolux Ab Multi-purpose vacuum cleaner nozzle
US5553349A (en) * 1994-02-21 1996-09-10 Aktiebolaget Electrolux Vacuum cleaner nozzle
CN1298278C (zh) * 2003-02-20 2007-02-07 维斯尔-韦克有限公司 用于地板和地毯的真空吸尘器管嘴
EP1520504A1 (fr) * 2003-10-01 2005-04-06 Seb S.A. Suceur d'aspirateur
FR2860415A1 (fr) * 2003-10-01 2005-04-08 Seb Sa Suceur d'aspirateur
US20110010889A1 (en) * 2009-03-12 2011-01-20 Dyson Technology Limited Surface treating head
US20100229339A1 (en) * 2009-03-12 2010-09-16 Dyson Technology Limited Surface treating head
US8468647B2 (en) 2009-03-12 2013-06-25 Dyson Technology Limited Surface treating head
US8544145B2 (en) 2009-03-12 2013-10-01 Dyson Technology Limited Surface treating head
US20100319159A1 (en) * 2009-06-17 2010-12-23 Dyson Technology Limited Tool for a surface treating appliance
US8424157B2 (en) 2009-06-17 2013-04-23 Dyson Technology Limited Tool for a surface treating appliance
US20110010886A1 (en) * 2009-07-16 2011-01-20 Dyson Technology Limited Surface treating head
US20110010890A1 (en) * 2009-07-16 2011-01-20 Dyson Technology Limited Surface treating head
US8387207B2 (en) * 2009-07-16 2013-03-05 Dyson Technology Limited Surface treating head
US8387206B2 (en) * 2009-07-16 2013-03-05 Dyson Technology Limited Surface treating head
AU2010272317B2 (en) * 2009-07-16 2013-09-19 Dyson Technology Limited A surface treating head
US20110119861A1 (en) * 2009-11-25 2011-05-26 Bissell Homecare, Inc. Pivoting extractor nozzle
US8418310B2 (en) 2009-11-25 2013-04-16 Bissell Homecare, Inc. Pivoting extractor nozzle

Also Published As

Publication number Publication date
FR2030332A1 (enrdf_load_stackoverflow) 1970-11-13
DE2003180A1 (de) 1970-09-03
SE334716B (enrdf_load_stackoverflow) 1971-05-03
JPS491105B1 (enrdf_load_stackoverflow) 1974-01-11
NL7001640A (enrdf_load_stackoverflow) 1970-08-10
GB1289468A (enrdf_load_stackoverflow) 1972-09-20
FR2030332B1 (enrdf_load_stackoverflow) 1973-10-19

Similar Documents

Publication Publication Date Title
US3660864A (en) Multi-purpose suction cleaner nozzle
US3798704A (en) Self-acting combination rug and floor vacuum cleaner nozzle
US3497903A (en) Self-adjusting multipurpose nozzle
EP4003119B1 (en) Robotic cleaner
US3599271A (en) Multipurpose vacuum cleaner nozzle
US3768114A (en) Combination rug and floor vacuum cleaner nozzle
US20080120801A1 (en) Cleaner
US20130145577A1 (en) Vacuum cleaner floor seal
US11617485B2 (en) Cleaning robot
CN101862164B (zh) 清洁器头
US20090089967A1 (en) Suction nozzle for use in vacuum cleaner
KR20180044366A (ko) 청소기 헤드
US3659312A (en) Multi-purpose vacuum cleaner nozzle
US6094776A (en) Brush and spacer assembly for a vacuum cleaner
GB2273653A (en) Broom-like vacuum cleaner nozzle
EP2276384A1 (en) Vacuum cleaner nozzle
US2181594A (en) Suction nozzle
US2233252A (en) Suction cleaner
KR102700204B1 (ko) 습식 청소 장치
US2203650A (en) Suction nozzle
WO2000021426A1 (en) A cleaner head assembly for a vacuum cleaner
US2516246A (en) Nozzle for suction cleaner
JPH0810196A (ja) 集塵用吸引ノズル
US2510270A (en) Suction cleaner nozzle
US2242566A (en) Suction nozzle