[go: up one dir, main page]

US2610351A - Squeegee nozzle attachment for vacuum cleaners - Google Patents

Squeegee nozzle attachment for vacuum cleaners Download PDF

Info

Publication number
US2610351A
US2610351A US771975A US77197547A US2610351A US 2610351 A US2610351 A US 2610351A US 771975 A US771975 A US 771975A US 77197547 A US77197547 A US 77197547A US 2610351 A US2610351 A US 2610351A
Authority
US
United States
Prior art keywords
squeegee
apex
plate
arcuate
forwardly
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
US771975A
Inventor
Howard C Lilly
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.)
Masury Young Co
Original Assignee
Masury Young Co
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 Masury Young Co filed Critical Masury Young Co
Priority to US771975A priority Critical patent/US2610351A/en
Application granted granted Critical
Publication of US2610351A publication Critical patent/US2610351A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details 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
    • A47L9/02Nozzles

Definitions

  • My present invention relates to Squeegees. and more particularly to a' squeegee adapted tobe attached to a vacuum cleaner.
  • My invention is particularly adapted for cleanmg a floor or other surface on whiclrconsiderable water or other fluid has been poured.
  • I provide a v-shaped squeegee to bepushed over the floor with the apex thereof" at; the rear so that the pushing actionof the squeegee accumulates the water toward the apexof the-v.
  • the principal object of my invention is therefore an improved squeegee for use on wet'fio'ors.
  • Another object is an improved 'V-shaped squeegee for use as an attachment on vacuum cleaners and in'which'the-structure of theunder surface of the apex of. the squeegeecooperates with the vacuum producing me'ansof the vacuum cleaner to pick up the watercollected by the squeegee and withdraw it'i'nto the water tank of the vacuum cleaner.
  • Another object is an improved construction for automatically keeping the ends of the arms forming the V of the squeegeein continuouscontact with the fioor as the device is pushed over the floor, regardless of the irregularities in the surface of the'floor. 7 V 1
  • Other objects and novel features of the construction and arrangements of parts comprising the invention will appear as the description of the invention progresses.
  • Figure 1 is a perspective view of my novel squeegee connected to the suction hose of a vacuum cleaner
  • Figure 2 is a bottom plan view thereof
  • Figure 3 is a vertical sectional elevational view.
  • the squeegee and nozzle device comprises a V- shaped plate or frame having arms extending forwardly from the apex of the plate at an angle of approximately 45 to the center line or axis. Adjacent the apex, the plate is formed with an arcuate contour, as shown in plan view in Figurev 2.
  • squeegee unit IS Extending around the arcuate apex of the plate and outwardly along the arms is the squeegee unit IS.
  • the squeegee is secured to the plate by means of yokes or housings I1, drilled and tapped as indicated in Fig. 1, to receive screws [8 for holding the squeegee unit in position on the device.
  • the squeegee unit comprises a pile-up of rubber strips [9, cemented together, and backed by 'The intake end of hose the brass-strips -20,. screwsi 2
  • the'unit When assembled, the'unit is placed in the yokes or housings I-1 andsecured alongthe rear margins of the arms of'the plate by-the screws 18.
  • Screws l8 and yokes I1 also enable the squeegee unit to be adjusted closer to the floor as the rubber strips l 9 become worm
  • Adjacent the" apex of theplate and in close proximity to the squeegee is a narrow arcuate slot 22 which forms the suction inlet and water intake
  • the lowersurfacexof the walls l3 defining" channel 22 are open to' andv slightlyispaced from the-floor inv the operation. of the device and therefore, allwater collected by the squeegee strips [9 is guided into the apexof the device and enters thechannel- 22 at the ends thereof.
  • The, channel 223 communicates with a forwardly extending passage 23 in fitting 14 secured to the top of plate [0 by screws I. l', and this passage 23 is connected: to a water-discharge passage 24 extending upwardly and rearwardly from the forward end of fitting. M;
  • a connector Assembled to the exit end of passage 24- is a connector" comprising a body 25 having one end reduced in diameter to equal the diameter of the exit: end. of passage 24.
  • the upper portion of the inner end of theconnector body is reduced and cut away as indicated at 26' atan angle of approximately 15" to permitthe body 25 to tilt in a vertical plane.
  • Fitting over the reduced end of the body 25 and the exit end of the member I4 is a coupling sleeve 2'! of resilient material, such as rubber.
  • body 25 is adapted to receive, as a rotating fit, the intake end of a metallic or other hose or handle member 28 leading to the water chamber of a vacuum cleaner (not shown).
  • 28 has formed therein 29 adapted to be en- 30 mounted on the a circumferential groove gaged by an arcuate hook body 25.
  • the squeegee connected to a vacuum cleaner by the metallic or other hosev 28, which also may form the operating handle for the device is pushed over a wetted floor with the open end of the V in advance, thus collecting any water encountered by means of the squeegee blades IS.
  • the collected water is thus directed into the ends of the arcuate channel 22, and
  • a squeegee nozzle device for vacuum cleaners comprising a V-shaped plate having divergent arms and an arcuate apex, a squeegee unit secured to the arms of the plate and extending around the arcuate apex, a narrow arcuate suction nozzle beneath the plate adjacent the apex thereof and in close proximity to the squeegee, means defining a suction passage communicating with the arcuate nozzle and extending forwardly from the apex of the plate, and means for mounting the attachment on a manipulating handle with the passage in suction communication with the handle, said means including a tiltable connection to permit relative movement between the device and handle ata point forwardly of the apex.
  • a squeegee attachment for vacuum cleaners comprising a V-shaped plate'having an, arcuate apex and arms diverging forwardly therefrom, a,
  • squeegee unit secured to said plate around the apex and outwardly along the arms and projecting below the underside of the plate, spaced walls open at their ends and depending from the underside of the plate adjacent the apex, said walls terminating in closely spaced relation to the floor to define an arcuate suction nozzle, means defining a suction passage communicating with the nozzle'and extending forwardly from said nozzle, and means for mounting the attachment ona manipulating handle with the passage in suction communication with said handle, said means including a tiltable connection to permit relative movement between the squeegee attachment and the handle at a point forwardly of the apex of the plate.
  • a squeegee nozzle device for vacuum cleaners comprising a flat plate having arms diverging forwardly from an arcuate apex, a squeegee unit secured to the rear margins of said arms of the plate and around the arcuate apex with the squee gee projecting below said plate, a suction nozzle having spaced walls depending from the flat plate into close proximity to the floor forwardly of and in closely spaced relation to the arcuate apex of the squeegee.

Landscapes

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

Description

Sept. 16, 1952 H. c. LILLY A SQUEEGEE NOZZLE ATTACHMENT FOR VACUUM CLEANERS Filed Sept. 3, 1947 //v VEN TO I? Ho WARD C. LILLY HTTOR'NEV Patented Sept. 16, 1952 T Tto STATE s'o EEeeE NQZZLE ATTACHMENT- FOR VACUUM CLEANERS Y Howard G.- Lilly,-
Mammy-1 011115 'Oo'mpany',
'Sharon; Massl, assignor: to-
Charlestown, Mass...
at conporaticniof Massachusetts. Application September 3, 1947,. SerialNo'. 7711975 1': Gl'aims. (CI. 15-401) My present invention relates to Squeegees. and more particularly to a' squeegee adapted tobe attached to a vacuum cleaner.
My invention is particularly adapted for cleanmg a floor or other surface on whiclrconsiderable water or other fluid has been poured. Insuch use, I provide a v-shaped squeegee to bepushed over the floor with the apex thereof" at; the rear so that the pushing actionof the squeegee accumulates the water toward the apexof the-v.
The principal object of my invention is therefore an improved squeegee for use on wet'fio'ors.
Another object is an improved 'V-shaped squeegee for use as an attachment on vacuum cleaners and in'which'the-structure of theunder surface of the apex of. the squeegeecooperates with the vacuum producing me'ansof the vacuum cleaner to pick up the watercollected by the squeegee and withdraw it'i'nto the water tank of the vacuum cleaner.
Another object is an improved construction for automatically keeping the ends of the arms forming the V of the squeegeein continuouscontact with the fioor as the device is pushed over the floor, regardless of the irregularities in the surface of the'floor. 7 V 1 Other objects and novel features of the construction and arrangements of parts comprising the invention will appear as the description of the invention progresses.
In the accompanying drawing illustrating a preferred embodiment of my invention:
Figure 1 is a perspective view of my novel squeegee connected to the suction hose of a vacuum cleaner,
Figure 2 is a bottom plan view thereof, and
Figure 3 is a vertical sectional elevational view.
I taken on the line 3-3 of Fig. l and looking in the direction of the arrows.
The squeegee and nozzle device comprises a V- shaped plate or frame having arms extending forwardly from the apex of the plate at an angle of approximately 45 to the center line or axis. Adjacent the apex, the plate is formed with an arcuate contour, as shown in plan view in Figurev 2.
Extending around the arcuate apex of the plate and outwardly along the arms is the squeegee unit IS. The squeegee is secured to the plate by means of yokes or housings I1, drilled and tapped as indicated in Fig. 1, to receive screws [8 for holding the squeegee unit in position on the device.
The squeegee unit comprises a pile-up of rubber strips [9, cemented together, and backed by 'The intake end of hose the brass-strips -20,. screwsi 2| passing through the stripsl9 and- 20- to make-a unit. When assembled, the'unit is placed in the yokes or housings I-1 andsecured alongthe rear margins of the arms of'the plate by-the screws 18. Screws l8 and yokes I1 also enable the squeegee unit to be adjusted closer to the floor as the rubber strips l 9 become worm Adjacent the" apex of theplate and in close proximity to the squeegee is a narrow arcuate slot 22 which forms the suction inlet and water intake The lowersurfacexof the walls l3 defining" channel 22 are open to' andv slightlyispaced from the-floor inv the operation. of the device and therefore, allwater collected by the squeegee strips [9 is guided into the apexof the device and enters thechannel- 22 at the ends thereof. The, channel 223 communicates with a forwardly extending passage 23 in fitting 14 secured to the top of plate [0 by screws I. l', and this passage 23 is connected: to a water-discharge passage 24 extending upwardly and rearwardly from the forward end of fitting. M;
Assembled to the exit end of passage 24- is a connector" comprising a body 25 having one end reduced in diameter to equal the diameter of the exit: end. of passage 24. The upper portion of the inner end of theconnector body is reduced and cut away as indicated at 26' atan angle of approximately 15" to permitthe body 25 to tilt in a vertical plane. Fitting over the reduced end of the body 25 and the exit end of the member I4 is a coupling sleeve 2'! of resilient material, such as rubber.
The outer end of body 25 is adapted to receive, as a rotating fit, the intake end of a metallic or other hose or handle member 28 leading to the water chamber of a vacuum cleaner (not shown). 28 has formed therein 29 adapted to be en- 30 mounted on the a circumferential groove gaged by an arcuate hook body 25.
In operation, the squeegee connected to a vacuum cleaner by the metallic or other hosev 28, which also may form the operating handle for the device, is pushed over a wetted floor with the open end of the V in advance, thus collecting any water encountered by means of the squeegee blades IS. The collected water is thus directed into the ends of the arcuate channel 22, and
the suction created by the vacuum cleaner will,
draw such water through the channels 22, 23, 24 and hose 28 into the water collecting tank of the vacuum cleaner.
It will be noted that the point of fulcrum of 3 the metallic hose or handle 28 relative to the squeegee unit is located forwardly of the center of the apex of the squeegee, and thus the far ends of the V are automatically kept in engagement with the floor as the device is pushed over the floor. 7
Various modifications in my device may 0bviously be made within the spirit and scope of my invention as defined by the appended claims.
7 I claim: 7
A squeegee nozzle device for vacuum cleaners comprising a V-shaped plate having divergent arms and an arcuate apex, a squeegee unit secured to the arms of the plate and extending around the arcuate apex, a narrow arcuate suction nozzle beneath the plate adjacent the apex thereof and in close proximity to the squeegee, means defining a suction passage communicating with the arcuate nozzle and extending forwardly from the apex of the plate, and means for mounting the attachment on a manipulating handle with the passage in suction communication with the handle, said means including a tiltable connection to permit relative movement between the device and handle ata point forwardly of the apex.
2. A squeegee attachment for vacuum cleaners comprising a V-shaped plate'having an, arcuate apex and arms diverging forwardly therefrom, a,
squeegee unit secured to said plate around the apex and outwardly along the arms and projecting below the underside of the plate, spaced walls open at their ends and depending from the underside of the plate adjacent the apex, said walls terminating in closely spaced relation to the floor to define an arcuate suction nozzle, means defining a suction passage communicating with the nozzle'and extending forwardly from said nozzle, and means for mounting the attachment ona manipulating handle with the passage in suction communication with said handle, said means including a tiltable connection to permit relative movement between the squeegee attachment and the handle at a point forwardly of the apex of the plate.
3. A squeegee nozzle device for vacuum cleaners comprising a flat plate having arms diverging forwardly from an arcuate apex, a squeegee unit secured to the rear margins of said arms of the plate and around the arcuate apex with the squee gee projecting below said plate, a suction nozzle having spaced walls depending from the flat plate into close proximity to the floor forwardly of and in closely spaced relation to the arcuate apex of the squeegee. means defining a suction passage extending along; the top of,the plate from the nozzle forwardly from the apex, and means on the top of the fiat plate and forwardly of the apex for mounting the device on a manipulating handle with the passage in suction communication with the handle.
4. A squeegee nozzle device for vacuum clean- 1 ers'comprising a flat plate having arms diverging forwardly from. an arcuate apex, a squeegee unit secured to the rear margins of said arms of the plate and around the arcuate apex with the squeegee projecting below said plate, a suction nozzle having spaced walls depending from the flat plate into close proximity to the floor forwardly of'and in closely spaced relation to the arcuate apex of the squeegee, means defining'a suction-passage extending along the top of the plate from the nozzle forwardly from the apex, and means on the top of the fiat plate and forwardly of the apex for mounting the device on a manipulating handle with the passage in suction communication with the handle, said means including a resilient sleeve connection to permit relative tilting movement between the handle and the squeegee nozzle device HOWARD 0.; LILLY.
REFERENCES ca e" The following references are'cf record in the file of this patent:
UNITED STATES PATENTS
US771975A 1947-09-03 1947-09-03 Squeegee nozzle attachment for vacuum cleaners Expired - Lifetime US2610351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US771975A US2610351A (en) 1947-09-03 1947-09-03 Squeegee nozzle attachment for vacuum cleaners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US771975A US2610351A (en) 1947-09-03 1947-09-03 Squeegee nozzle attachment for vacuum cleaners

Publications (1)

Publication Number Publication Date
US2610351A true US2610351A (en) 1952-09-16

Family

ID=25093513

Family Applications (1)

Application Number Title Priority Date Filing Date
US771975A Expired - Lifetime US2610351A (en) 1947-09-03 1947-09-03 Squeegee nozzle attachment for vacuum cleaners

Country Status (1)

Country Link
US (1) US2610351A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914791A (en) * 1952-05-17 1959-12-01 Arthur L Wells Apparatus for drying wet surfaces
US2930068A (en) * 1957-10-25 1960-03-29 Austin E Evanson Vacuum device for picking up grass, leaves, and the like
US3019462A (en) * 1960-01-26 1962-02-06 Jacuzzi Bros Inc Vacuum cleaner
US3371371A (en) * 1966-01-18 1968-03-05 Steccone Ettore Pick-up tool assembly
US3490207A (en) * 1966-07-14 1970-01-20 W W Sly Mfg Co Dust collector
EP0019192A1 (en) * 1979-05-09 1980-11-26 Ing. Alfred Schmidt Gmbh Apparatus for removing dirt from roads or like surfaces by means of a suction air stream
US4455706A (en) * 1978-10-05 1984-06-26 Ing. Jurgen Volkmann, Gmbh Process and apparatus for the removal or controlled reduction of adherent films of liquid on hard surfaces
US4602401A (en) * 1984-11-21 1986-07-29 Holroyd Wilbur R Squeegee construction
US4638527A (en) * 1986-02-20 1987-01-27 Fleischhauer Eugene T Vacuum cleaner attachments
US4653137A (en) * 1986-02-20 1987-03-31 Eugene Fleischhauer Vacuum cleaner attachments
US4881085A (en) * 1987-08-18 1989-11-14 Burlington Industries, Inc. Vacuum powered manually operated cleaning tool for active surfaces of fluid-jet print head
US5323510A (en) * 1993-07-09 1994-06-28 Redding Glenn K Vacuum cleaner having improved steering features
US5761762A (en) * 1995-07-13 1998-06-09 Eishin Technology Co., Ltd. Cleaner and bowling maintenance machine using the same
US20070163076A1 (en) * 2006-01-19 2007-07-19 Grey Technology Limited Suction head for a vaccum cleaner
US20090293220A1 (en) * 2008-05-27 2009-12-03 Mensch Donald L Vacuum truck with collapsible scraper and pivot relief
US20100272554A1 (en) * 2009-04-24 2010-10-28 Mensch Donald L Tank truck with side-shooting discharge
USD741864S1 (en) * 2014-09-10 2015-10-27 Faro Technologies, Inc. Laser scanner
US9937603B2 (en) 2015-09-24 2018-04-10 Ron Yagur Method and apparatus for coupling two wheeled vehicles

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US954541A (en) * 1906-04-18 1910-04-12 Vacuum Cleaner Company Scrubbing device.
US1006221A (en) * 1908-10-13 1911-10-17 Walter S Finnell Machine for removing water from floors.
US1263396A (en) * 1917-06-21 1918-04-23 Quinto Faustini Scrubbing-machine.
DE356441C (en) * 1916-08-01 1922-07-24 Eugen Zentz Floor polishing machine
US1923689A (en) * 1931-12-11 1933-08-22 Nat Super Service Company Suction machine
US2243611A (en) * 1938-10-24 1941-05-27 Stroschein Edward Vacuum cleaner nozzle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US954541A (en) * 1906-04-18 1910-04-12 Vacuum Cleaner Company Scrubbing device.
US1006221A (en) * 1908-10-13 1911-10-17 Walter S Finnell Machine for removing water from floors.
DE356441C (en) * 1916-08-01 1922-07-24 Eugen Zentz Floor polishing machine
US1263396A (en) * 1917-06-21 1918-04-23 Quinto Faustini Scrubbing-machine.
US1923689A (en) * 1931-12-11 1933-08-22 Nat Super Service Company Suction machine
US2243611A (en) * 1938-10-24 1941-05-27 Stroschein Edward Vacuum cleaner nozzle

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914791A (en) * 1952-05-17 1959-12-01 Arthur L Wells Apparatus for drying wet surfaces
US2930068A (en) * 1957-10-25 1960-03-29 Austin E Evanson Vacuum device for picking up grass, leaves, and the like
US3019462A (en) * 1960-01-26 1962-02-06 Jacuzzi Bros Inc Vacuum cleaner
US3371371A (en) * 1966-01-18 1968-03-05 Steccone Ettore Pick-up tool assembly
US3490207A (en) * 1966-07-14 1970-01-20 W W Sly Mfg Co Dust collector
US4455706A (en) * 1978-10-05 1984-06-26 Ing. Jurgen Volkmann, Gmbh Process and apparatus for the removal or controlled reduction of adherent films of liquid on hard surfaces
EP0019192A1 (en) * 1979-05-09 1980-11-26 Ing. Alfred Schmidt Gmbh Apparatus for removing dirt from roads or like surfaces by means of a suction air stream
FR2456165A1 (en) * 1979-05-09 1980-12-05 Schmidt Alfred Gmbh DEVICE FOR COLLECTING SCANNING WASTE BY MEANS OF A SUCTION AIR STREAM
US4602401A (en) * 1984-11-21 1986-07-29 Holroyd Wilbur R Squeegee construction
US4638527A (en) * 1986-02-20 1987-01-27 Fleischhauer Eugene T Vacuum cleaner attachments
US4653137A (en) * 1986-02-20 1987-03-31 Eugene Fleischhauer Vacuum cleaner attachments
EP0238213A3 (en) * 1986-02-20 1988-01-20 Eugene T. Fleischhauer Vacuum cleaner attachments
US4881085A (en) * 1987-08-18 1989-11-14 Burlington Industries, Inc. Vacuum powered manually operated cleaning tool for active surfaces of fluid-jet print head
US5323510A (en) * 1993-07-09 1994-06-28 Redding Glenn K Vacuum cleaner having improved steering features
US5761762A (en) * 1995-07-13 1998-06-09 Eishin Technology Co., Ltd. Cleaner and bowling maintenance machine using the same
US20070163076A1 (en) * 2006-01-19 2007-07-19 Grey Technology Limited Suction head for a vaccum cleaner
EP1810603A1 (en) * 2006-01-19 2007-07-25 Grey Technology Limited Suction head for a vacuum cleaner
US7802343B2 (en) 2006-01-19 2010-09-28 Grey Technology Limited Suction head for a vacuum cleaner
US20090293220A1 (en) * 2008-05-27 2009-12-03 Mensch Donald L Vacuum truck with collapsible scraper and pivot relief
US7891048B2 (en) * 2008-05-27 2011-02-22 Mensch Donald L Vacuum truck with collapsible scraper and pivot relief
US20100272554A1 (en) * 2009-04-24 2010-10-28 Mensch Donald L Tank truck with side-shooting discharge
USD741864S1 (en) * 2014-09-10 2015-10-27 Faro Technologies, Inc. Laser scanner
US9937603B2 (en) 2015-09-24 2018-04-10 Ron Yagur Method and apparatus for coupling two wheeled vehicles
US10406653B2 (en) 2015-09-24 2019-09-10 Dynamic Concrete, Llc Method and apparatus for coupling two wheeled vehicles

Similar Documents

Publication Publication Date Title
US2610351A (en) Squeegee nozzle attachment for vacuum cleaners
JP5709948B2 (en) Vacuum cleaner floor tools
JP5709947B2 (en) Vacuum cleaner floor tools
JP4046347B2 (en) Portable / portable vacuum cleaner
JP5811367B2 (en) Vacuum cleaner floor tools
US3616482A (en) Suction operated washing and cleaning apparatus
US3107387A (en) Double action squeegee
CN102920398B (en) Water-sucking type cleaner with water spraying function
JP5811368B2 (en) Vacuum cleaner floor tools
JP5913225B2 (en) Vacuum cleaner floor tools
CN104507374B (en) Vacuum cleaner and wet dust filter
JP2014030728A (en) Floor tool for vacuum cleaner
KR102613447B1 (en) Cleaner
US2232548A (en) Vacuum cleaner
US1633598A (en) Vacuum-cleaner device
US4238869A (en) Liquid aspirator
US3079623A (en) Vacuum cleaner floor tool
US8056181B2 (en) Vacuum cleaner and intake port unit thereof
US6895632B2 (en) Hand held vacuum with arcuate gliding surface
US4275478A (en) Extractor head for cleaning soft surfaces such as carpet or upholstry
CN104856610A (en) Vacuum Cleaner Head
US2230077A (en) Vacuum cleaner
GB661636A (en) Improvements in or relating to apparatus for cleaning floors and other surfaces
US2619669A (en) Suction nozzle having nozzle area control and surface agitating means
KR101414660B1 (en) Aspiration nozzle of vacuum cleaner and vacuum cleaner having same