US3039130A - Vacuum cleaners - Google Patents

Vacuum cleaners Download PDF

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Publication number
US3039130A
US3039130A US849534A US84953459A US3039130A US 3039130 A US3039130 A US 3039130A US 849534 A US849534 A US 849534A US 84953459 A US84953459 A US 84953459A US 3039130 A US3039130 A US 3039130A
Authority
US
United States
Prior art keywords
nozzle
conduit
suction
inlet
fan
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
US849534A
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English (en)
Inventor
Michael E Belicka
Leon P Borkoski
Ferman C Doughman
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 Corp
Original Assignee
Electrolux Corp
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 Corp filed Critical Electrolux Corp
Priority to US849534A priority Critical patent/US3039130A/en
Priority claimed from US862261A external-priority patent/US3039129A/en
Priority to CH1113760A priority patent/CH397167A/de
Application granted granted Critical
Publication of US3039130A publication Critical patent/US3039130A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/32—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with means for connecting a hose
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/34—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with height adjustment of nozzles or dust-loosening tools

Definitions

  • VACUUM CLEANERS 3 Sheets-Sheet 1 Filed Oct. 29, 1959 T z M 0 N S a Y mfiw m ee R mmfiw, .0 wfim m Mu /M Y w B 3 W M J 12% w NOD & mm W June 19, 1962 M.
  • BELICKA ET AL VACUUM CLEANERS 3 Sheets-Sheet 3 Filed Oct. 29, 1959 /Illllillllf THEIR ATTORNEY United States Patent Ofiice 3,039,130 Patented June 19, 1962 3,939,130 VACUUM CLEANERS Michael E. Belicka, Greenwich, Leon P. Borkoslri, Stamford, and Ferrnan C.
  • Our invention relates to vacuum cleaners and more particularly to cleaners of the enclosed bag type in which the air passes through the dust separating member before entering the fan.
  • a cleaner of this type may employ a fan which is designed to handle only clean air, inasmuch as the dirt is separated before the air reaches the fan, and such a fan is capable of producing a much higher suction than is one which is able to pass dirty air Without becoming fouled.
  • the nozzle of such a vacuum cleaner is usually connected to the dust bag and fan unit by means of two sec-' tions of rigid pipe, which also serve as a handle for manipulating the nozzle, and a flexible suction hose.
  • rigid pipe which also serve as a handle for manipulating the nozzle
  • a flexible suction hose
  • the disadvantage of the first arrangement is that there is not suflicient air power available for both operating a turbine and producing a suitable air stream for picking up dirt, because if the air is passed through a turbine a pressure drop results, which reduces by this amount the suction available at the nozzle mouth to produce airflow.
  • the disadvantage of an electric motor is that it requires a complicated and cumbersome arrangement of electric conductors to convey electricity from the dust separating and fan unit to the nozzle. A separate electric cord lying on the floor and running to the nozzle is so inconvenient as to be totally impractical. Consequently, it is necessary to have the conductors extend along or through the hose and the pipe sections. However, due to the fact that there are at least four separable joints and usually at least two swivel joints, where the conductors would have to be separable and turnable, respectively, this has proved impracticable.
  • a nozzle having an agitator driven by an electric motor in the nozzle such nozzle being directly connectable with the dust bag and fan unit, the bag being located ahead of the fan so that the latter may be of the high suction type. Separable electrical contacts between the nozzle and the unit are arranged to be automatically connected together when the nozzle is secured to the unit.
  • a detachable pivoted handle is provided for manipulating the combined unit and nozzle over the surface being cleaned.
  • FIG. 1 is an elevational side view of a vacuum cleaner in accordance with the present invention showing a nozzle connected thereto by means of a flexible hose;
  • FIG. 2. is a view similar to FIG. 1, but showing a nozzle connected directly to the vacuum cleaner;
  • FIG. 3 is a cross-sectional view taken on the line 3-3 of FIG. 2;
  • FIG. 4 is a view on an enlarged scale of a detail of a handle shown in FIGS. 2 and 3;
  • FIG. 5 is a cross-sectional view on an enlarged scale taken on the line 5-5 of FIG. 3;
  • FIG. 6 is a bottom view of the nozzle and part of the vacuum cleaner shown in FIG. 5;
  • FIG. 7 is a cross-sectional view taken on the lines 77 of FIGS. 2 and 5, and with a portion of the nozzle broken away.
  • reference character 10 designates generally a vacuum cleaner unit including a hollow housing mounted on a front caster Wheel 12 and a pair of rear Wheels 14.
  • the housing comprises an elongated horizontal portion 16 to which is secured near the rear end thereof a vertically extending portion 18 having an outlet 19.
  • a carrying handle 20 is secured to the upper part of housing portion 16 and an electric switch 22 is located directly in front of the handle.
  • a blower unit comprising an electric motor 24 and a centrifugal fan 26 having an inlet 27 is disposed partially within the vertical housing 18 and extends into the rear portion of the horizontal housing 16.
  • the forward part of the horizontal housing comprises a dust bag chamber within which is disposed a perforated inner body 28 adapted to removably receive a dust bag 30.
  • the latter comprises aporous bag portion secured to a relatively stiff disc 32 having an outwardly extending flange portion adapted to be clamped against a gasket 34 by means of a sealing ring 36 mounted on an inlet conduit 38 of a front cover 40.
  • the disc 32 is formed with an inlet opening 42 through which the conduit 38 extends when the cover is in place.
  • a pair of spring clips 44 is provided on the outside of body 16 for engaging the front cover 40 to removably hold the latter in place.
  • inlet conduit 38 is provided with an inwardly extending radial flange 4-5 which constitutes one-half of a separable coupling.
  • the other half of this coupling is mounted on a conduit 48 and includes resilient latches 50 which engage behind the lip 46 to connect the conduit 48 to the front cover 20, and which may be retracted by the manually operable buttons 52 to release the coupling.
  • the conduit 48 is in the form of an elbow with its vertical leg rigidly connected to a nozzle memher 54.
  • This nozzle includes a base portion 56 on which is mounted an electric motor 58 having a cooling fan 68. Also mounted in bearings 61 on the base 56 is rotatable brush 62 driven by the motor 58 through a belt 64.
  • This brush is located in a suction mouth 66 formed in a plate 68 which otherwise closes the bottom of the base portion 56, except for a slot 70 through which extends a supporting roller 72 rotatably mounted in the base portion.
  • the suction mouth 66 is in open communication with the conduit 48.
  • plate 68 may also be formed with a plunality of ribs 74 which serve both to stiffen the plate and to provide gliding surfaces.
  • An ornamental hood 71 is mounted on base 56 and covers motor 58, fan 68 and belt 64. The hood is formed with openings 73 for the admission of air to cooling fan 60'.
  • a bumper 75 extends around the nozzle.
  • rigid pins 76 are secured to the base portion 56 and extend rearwardly therefrom parallel to the horizontal portion of elbow conduit 48.
  • the bottom of housing 16 is provided with sockets 78 which are adapted to frictionally receive the pins 76.
  • the various parts are so located with respect to each other that when the pins 76 are received in the sockets 78, the conduit 48 is received in the inlet opening in the cover 40.
  • the nozzle 54 is thus connected to the rest of the vacuum cleaner at three points, thus providing a non-rotatable connection between the two.
  • the engagement of the latches 52 behind the lip 46 prevents unintentional separation of the nozzle 54 from the vacuum cleaner unit 10.
  • an electric plug 88 mounted on the base portion 56 preferably adjacent to one of the pins 76 is an electric plug 88 having contact prongs 82 which are so located as to be received within an electric receptacle 84 mounted on the cleaner body.
  • an electric circuit is automatically established from the receptacle 84 to the plug 84).
  • the plug 80 is connected by conductors 86 to the electric motor 58.
  • the receptacle 84 is connected by conductors not shown so as to be parallel with the motor 24, the circuit to both motors 24 and 58 being controlled by the switch 22.
  • a handle member 90 may be removably secured to the vacuum cleaner unit
  • the handle includes a hand grip portion 92 and a fork portion having legs 94, the lower ends of which straddle the vacuum cleaner unit and are provided with inwardly extending pins 96 which may 'be engaged in blind holes 98 formed in opposite sides of the housing 16.
  • the resiliency of the fork portion of the handle makes it possible to spread the legs 94 sufiiciently to engage .the pins in the holes, whereupon the resiliency causes the legs to retain the pins therein.
  • Secured to each leg near its lower end is a segment shaped plate 186 formed with stops 102 and 104.
  • the pins 106 are midway between the stops 102 and 184 and the handle may be pivoted upwardly or downwardly. Upward pivoting is limited by the stop 104 striking the pin 186, the handle being then slightly past the vertical, and hence will remain in this position as gravity tends to cause it to pivot counter-clockwise. Downward pivoting of the handle is limited by the stop 182 contacting the pin 106 to retain the handle at an angle of about 45 from the vertical.
  • the hand grip portion 92 is provided with a hook-like projection 108 over which may be looped the electric cord 110 so as to keep the latter off the floor immediately to the rear of the vacuum cleaner and thus out of the way of the feet of the operator.
  • FIG. 1 the cleaner unit 10 is shown with the above
  • the housing 16 is provided with outwardly exdescribed nozzle removed and with a flexible suction hose 112 connected to the inlet opening in the front cover 4!).
  • This hose is provided with a coupling similar to that provided at the end of conduit 48 of the nozzle and consequently the end of the hose may be removably secure-d to the front cover in the same manner as described in connection with the conduit 48.
  • the other end of the hose 112 is connected to a suction nozzle 114 of conventional type, a pair of rigid wands 116 being interposed therebetween. These wands serve the dual purpose of providing a fluid connection between the nozzle and the hose and serving as a handle member for manipulating the nozzle over the surface to be cleaned.
  • FIG. 1 In use, if it is desired to clean an ordinary rug which is susceptible of being cleaned by straight suction, the combination shown in FIG. 1 is used. During cleaning, the operator moves the nozzle 114 back and forth over the rug, the unit 10 remaining stationary, except as it is necessary to move it occasionally as the cleaning progresses from one end of the rug to the other. ,However, it is not necessary to move it back and forth with each stroke of the nozzle.
  • the air induced to enter the nozzle 114 by the suction produced by the blower 26 re moves dirt from the rug in the usual way, the dirt-ladened air being conducted through the wands 116 and hose 112 to bag 30, which retains the dirt while permitting clean air to pass therethrough to the inlet 27 of blower 26. From the blower the air is discharged through the motor 24 into the space within housing 18, from whence it is exhausted to atmosphere through the outlet 19.
  • the hose 112 is disconnected from the unit 10 by depressing the buttons 52, whereupon the nozzle 54 may be directly connected to the unit.
  • the pins 76 are aligned with the recesses in the sockets 78 and the conduit 48 is aligned with .the inlet opening in the cover 48, whereupon the nozzle is moved horizont-ally towards the unit 18. This causes the conduit 48 to be introduced into the inlet opening, the spring latches 50 being deflected by the annular lip 46 and thereafter latching behind the lip so as to prevent unintended withdrawal of the conduit.
  • the pins 76 are frictionally received within the sockets 78 so that the nozzle is now rigidly secured to the cleaning unit 10'.
  • the prongs 82 on the plug 88 of the nozzle are received within the sockets 84 on the unit 10 so as to automatically establish an electrical connection between the two.
  • the handle is then secured to the unit 10 in the manner previously described by engaging the pins 96 in the apertures 98, the electric cord being then looped over the hook 188 near the top of the handle so as to be out of the way of the operators feet.
  • the switch 22 If the switch 22 is now moved to the on position it will cause both the motor 24 in the unit 10 and the motor 58 in the nozzle 54 to operate.
  • the latter motor drives the brush 62, the bristles of which sweep the rug so as to dislodge dirt adhering thereto.
  • the operation of the motor 24 causes the blower 26 to produce a partial vacuum in the dust bag chamber, thus causing atmospheric air to enter the nozzle 54 through .the opening 66 and to pass through the conduit 48 to the interior of the dust bag 30.
  • the air entering through the inlet 66 picks up dirt from the rug and carries away dirt dislodged from the rug by the rotary brush 62. This dirt is carried with the air into the bag 30, where the dirt is retained while the air passes through the material of the bag. This clean air enters the blower 26 through the inlet 27 and is discharged through the motor 24 into the space within the housing 18, from whence it is exhausted to the atmosphere through the outlet 19 in the same manner as described in connection with FIG. 1.
  • the nozzle 54 attached directly to the cleaner there is obtained the advantage of mechanical agitation of the rug together with the high suction which may be obtained from a blower of the type which does not have to handle dirty air.
  • the suction obtainable at the mouth 66 of the nozzle 54 is greater than that obtainable at the nozzle 114 in FIG. 1, due to the fact that in the latter arrangement there is a pressure drop through the wands 116 and the hose 112, which is not present when .the nozzle 54 is connected directly to the cleaner unit 10.
  • a body member means for movably supporting said body on a substantially horizontal surface, dust separating means within said body, said body being formed with an opening for the insertion and removal of said dust separating means, a closure for said opening formed with an inlet port, a motor-fan unit within said housing for inducing flow of air through said inlet, a suction nozzle, a suction conduit connected to said nozzle, means for removably securing said nozzle to said body independently of said closure and in position to be moved with said body over said surface and with said conduit communicating with said inlet, an agitator in said nozzle, an electric motor in said nozzle for driving said agitator, and separable electrical contacts on said nozzle and on said body member, respectively, connectable when said nozzle is secured to said body.
  • a body member means for movably supporting said body on a substantially horizontal surface, dust separating means within said body, said body being formed with an opening for the insertion and removal of said dust separating means, a closure for said opening formed with an inlet port, a motor-fan unit within said housing for inducing flow of air through said inlet, a suction nozzle, a rigid suction conduit connected to said nozzle, a pin projecting from said nozzle, a socket on said body for receiving said pin for removably securing said nozzle to said body independently of said closure and in position to be moved with said body over said surface, said pin and conduit being so positioned with respect to each other that said conduit is received in said inlet when said pin is received in said socket, an agitator in said nozzle, an electric motor in said nozzle for driving said agitator, and separable electrical contacts on said nozzle and on said body member, respectively, automatically connecta'ble when said nozzle is secured to said body.
  • a body member means for movably supporting said body on a substantially horizontal surface, dust separating means Within said body, said body being formed with an opening for the insertion and removal of said dust separating means, a closure for said opening formed with an inlet port, a motor-fan unit within said housing for inducing flow of air through said inlet, a suction nozzle, a rigid suction conduit connected to said nozzle, an automatically connectable and manually separable push connector on the end of said conduit, a pin projecting from said nozzle, a socket on said body for receiving said pin for removably securing said nozzle to said body independently of said closure and in position to be moved with said body over said surface, said pin and conduit being so relatively positioned that said push connector automatically is connected to said inlet when said pin is received in said socket, an agitator in said nozzle, an electric motor in said nozzle for driving said agitator, and separable electrical contacts on said nozzle and on said body member, respectively, automatically connectable when said nozzle is
  • a body member for movably supporting said body on a substantially horizontal surface, dust separating means within said body, said body being formed with an opening for the insertion and removal of said dust separating means, a closure for said opening formed with an inlet port, a motor-fan unit within said housing for inducing flow of air through said inlet, a suction nozzle, a suction conduit connected to said nozzle, means for removably securing said nozzle to said body independently of said closure and in position to be moved with said body over said surface and with said conduit communicating with said inlet, wheeled support means on said nozzle for contacting said surface, an agitator in said nozzle, an electric motor in said nozzle for driving said agitator, and separable electric contacts on said nozzle and on said body member, respectively, connectable when said nozzle is secured to said body.
  • a body member means for movably supp citing said body on a substantially horizontal surface, dust separating means Within said body, said body being formed with an opening for the insertion and removal of said dust separating means, a closure for said opening formed with an inlet port, a motor-fan unit within said housing for inducing flow of air through said inlet, a suction nozzle, a suction conduit connected to said nozzle, means for removably securing said nozzle to said body independently of said closure and in position to be moved with said body over said surface and with said conduit communicating with said inlet, an agitator in said nozzle, an electric motor in said nozzle for driving said agitator, separable electrical contacts on said nozzle and on said body member, respectively, automatically connectable when said nozzle is secured to said body, and a handle member removably securable to said body member for moving said body member and said nozzle over said surface.
  • a body member means for movably supporting said body on a substantially horizontal surface, dust separating means Within said body, said body being formed with an opening for the insertion and removal of said 'dust separating means, a closure for said opening formed with an inlet port, a motor-fan unit within said housing for inducing flow of air through said inlet, a suction nozzle, a suction conduit connected to said nozzle, a pair of spaced sockets on said body adjacent to said inlet opening, a pair of pins projecting from said nozzle and receivable in said sockets for removably securing said nozzle to said body independently of said closure and in position to be moved with said body over said surface, said pins and sockets being so positioned relative to each other that said conduit is aligned with said inlet opening when the pins are received in the sockets, an agitator in said nozzle, an electric motor in said nozzle for driving said agitator, and separable electrical contacts on said nozzle and on said body member

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US849534A 1959-10-29 1959-10-29 Vacuum cleaners Expired - Lifetime US3039130A (en)

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US849534A US3039130A (en) 1959-10-29 1959-10-29 Vacuum cleaners
CH1113760A CH397167A (de) 1959-10-29 1960-10-04 Staubsauger

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FR1274775T
US849534A US3039130A (en) 1959-10-29 1959-10-29 Vacuum cleaners
US862261A US3039129A (en) 1959-12-28 1959-12-28 Vacuum cleaners

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148400A (en) * 1960-12-22 1964-09-15 Mauz & Pfeiffer Carpet beating and cleaning machine
US3184775A (en) * 1962-05-22 1965-05-25 Electrolux Corp Electric carpet sweepers
US3354496A (en) * 1964-05-28 1967-11-28 Electrolux Ab Suction cleaner nozzle of the agitator type
JPS49110972U (de) * 1973-01-19 1974-09-21
JPS49128079U (de) * 1973-01-19 1974-11-01
JPS5033960U (de) * 1973-07-20 1975-04-11
JPS50144466U (de) * 1974-05-16 1975-11-28
JPS5261174U (de) * 1975-10-24 1977-05-04
US4318202A (en) * 1980-10-16 1982-03-09 Holman Donald M Conversion device for cannister vacuum cleaners
JPS5855754U (ja) * 1981-10-14 1983-04-15 株式会社日立製作所 電気掃除機
US5054157A (en) * 1989-05-19 1991-10-08 Whirlpool Corporation Combination stand alone and canister vacuum cleaner
US5309600A (en) * 1993-02-12 1994-05-10 Bissell Inc. Vacuum cleaner with a detachable vacuum module
US5715566A (en) * 1993-02-12 1998-02-10 Bissell Inc. Cleaning machine with a detachable cleaning module
US5836047A (en) * 1994-01-20 1998-11-17 Daewoo Electronics Co., Inc. Vacuum cleaner for both upright and canister modes
US20040006842A1 (en) * 2000-09-22 2004-01-15 Nam-Ho Lee Versatile vacuum cleaner
WO2005034706A2 (en) * 2003-10-09 2005-04-21 T.P.A. Impex S.P.A. Sucking device
US9427128B2 (en) 2012-05-29 2016-08-30 Bissell Homecare, Inc. Extraction cleaner

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US980944A (en) * 1909-09-27 1911-01-10 Tracy Barbour Hatch Suction-cleaner.
GB252414A (en) * 1925-05-25 1926-11-25 James Blaine Kirby Improvement in suction cleaners
US1667729A (en) * 1925-12-09 1928-05-01 George W Fleming Polishing attachment for vacuum cleaners
US1697918A (en) * 1925-05-28 1929-01-08 Walter L Keefer Floor-polishing attachment for vacuum cleaners
DE602140C (de) * 1932-12-16 1934-09-04 Fein C & E Staubsaugermundstueck mit Klopfvorrichtung
US2044830A (en) * 1933-07-08 1936-06-23 Electrolux Corp Vacuum cleaner
US2303409A (en) * 1940-04-09 1942-12-01 Westinghouse Electric & Mfg Co Suction cleaning apparatus
US2477681A (en) * 1945-08-17 1949-08-02 Electrolux Corp Electropneumatic power unit
US2482166A (en) * 1947-07-16 1949-09-20 William I Gage Stationary filter type suction cleaner
US2592710A (en) * 1948-01-26 1952-04-15 James B Kirby Sweeper type vacuum cleaner having automatic nozzle adjustment

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US980944A (en) * 1909-09-27 1911-01-10 Tracy Barbour Hatch Suction-cleaner.
GB252414A (en) * 1925-05-25 1926-11-25 James Blaine Kirby Improvement in suction cleaners
US1697918A (en) * 1925-05-28 1929-01-08 Walter L Keefer Floor-polishing attachment for vacuum cleaners
US1667729A (en) * 1925-12-09 1928-05-01 George W Fleming Polishing attachment for vacuum cleaners
DE602140C (de) * 1932-12-16 1934-09-04 Fein C & E Staubsaugermundstueck mit Klopfvorrichtung
US2044830A (en) * 1933-07-08 1936-06-23 Electrolux Corp Vacuum cleaner
US2303409A (en) * 1940-04-09 1942-12-01 Westinghouse Electric & Mfg Co Suction cleaning apparatus
US2477681A (en) * 1945-08-17 1949-08-02 Electrolux Corp Electropneumatic power unit
US2482166A (en) * 1947-07-16 1949-09-20 William I Gage Stationary filter type suction cleaner
US2592710A (en) * 1948-01-26 1952-04-15 James B Kirby Sweeper type vacuum cleaner having automatic nozzle adjustment

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148400A (en) * 1960-12-22 1964-09-15 Mauz & Pfeiffer Carpet beating and cleaning machine
US3184775A (en) * 1962-05-22 1965-05-25 Electrolux Corp Electric carpet sweepers
US3354496A (en) * 1964-05-28 1967-11-28 Electrolux Ab Suction cleaner nozzle of the agitator type
JPS49110972U (de) * 1973-01-19 1974-09-21
JPS49128079U (de) * 1973-01-19 1974-11-01
JPS548628Y2 (de) * 1973-01-19 1979-04-20
JPS5033960U (de) * 1973-07-20 1975-04-11
JPS50144466U (de) * 1974-05-16 1975-11-28
JPS5261174U (de) * 1975-10-24 1977-05-04
US4318202A (en) * 1980-10-16 1982-03-09 Holman Donald M Conversion device for cannister vacuum cleaners
JPS5855754U (ja) * 1981-10-14 1983-04-15 株式会社日立製作所 電気掃除機
JPS642668Y2 (de) * 1981-10-14 1989-01-23
US5054157A (en) * 1989-05-19 1991-10-08 Whirlpool Corporation Combination stand alone and canister vacuum cleaner
US5309600A (en) * 1993-02-12 1994-05-10 Bissell Inc. Vacuum cleaner with a detachable vacuum module
US5715566A (en) * 1993-02-12 1998-02-10 Bissell Inc. Cleaning machine with a detachable cleaning module
US5836047A (en) * 1994-01-20 1998-11-17 Daewoo Electronics Co., Inc. Vacuum cleaner for both upright and canister modes
US20040006842A1 (en) * 2000-09-22 2004-01-15 Nam-Ho Lee Versatile vacuum cleaner
US6779229B2 (en) * 2000-09-22 2004-08-24 Daewoo Electronics Corporation Versatile vacuum cleaner
WO2005034706A2 (en) * 2003-10-09 2005-04-21 T.P.A. Impex S.P.A. Sucking device
WO2005034706A3 (en) * 2003-10-09 2005-07-14 T P A Impex Spa Sucking device
US9427128B2 (en) 2012-05-29 2016-08-30 Bissell Homecare, Inc. Extraction cleaner
US10368713B2 (en) 2012-05-29 2019-08-06 Bissell Homecare, Inc. Extraction cleaner
US11607100B2 (en) 2012-05-29 2023-03-21 Bissell Inc. Extraction cleaner

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CH397167A (de) 1965-08-15

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