US2064587A - Vacuum cleaner - Google Patents

Vacuum cleaner Download PDF

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Publication number
US2064587A
US2064587A US73291134A US2064587A US 2064587 A US2064587 A US 2064587A US 73291134 A US73291134 A US 73291134A US 2064587 A US2064587 A US 2064587A
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Patent type
Prior art keywords
housing
air
impeller
motor
casing
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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
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Inventor
Carlstedt Fredrik
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Aerus LLC
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Aerus LLC
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    • 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
    • A47L9/0072Mechanical means for controlling the suction or for effecting pulsating action
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00Structural features of suction cleaners
    • A47L5/12Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00Structural features of suction cleaners
    • A47L5/12Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/32Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with means for connecting a hose
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00Gas separation
    • Y10S55/03Vacuum cleaner

Description

Dec. 15, 1936. F L TE T 2,064,587

VACUUM CLEANER Filed June 28, 1934 2 Sheets-Sheet l /6 I I -lNV T ORNEY Dec. 15, 1936.

F. cARLsTEDT VACUUM CLEANER Filed June 28, 1954 2 Sheets-Sheet 2 Patented l5, 1936 ta s I attain a'il'i CLEANER Fredrih @arlstedt, Stockholm, Sweden, asslgnorto Electrolux Corporation, Dover, Del. a corporation of Delaware Application tune as, 1934, Serial No. 32,911 In Genny July 8, 1933 *2 Claims. (er. 183-37) In my application, Serial No. 710,421, filed on February 9, 1934, Patent No. 2,044,830, issued June 23, 1936, there is disclosed and claimed a different conditions of vacuum cleaner action.

For example, in cleaning heavy fabrics, such as rugs, a high vacuum is desirable in order to draw air through the cloth or the like for the purpose of removing embedded dirt, as well as for removing dirt adhering to the surface of the cloth. On the other hand, when cleaning a smooth surface, such as a hardwood floor, a

high'vacuum is not necessary, but a large air quantity at lower pressure differential suffices and permits cleaning agiven area in a quicker time.

The present invention relates to a vacuum cleaner of this general type and has for its o'b- -ject to provide an electrically driven vacuum cleaner, having at least one of the air impellers mounted on one end of the motor shaft and at least one other of the impellers mounted on the other end of the motor shaft. Further objects and advantages will be apparent from the following description considered in connection with the accompanying draw-' ings, which form a part of the specification and of which:

Fig. 1 is a side view of one embodiment of the invention;. 1

Fig. 2 is a cross-sectional view, on an enlarged scale, taken on the line 2-2 of Fig. 1, or on line 2-2 of. Fig. 3; I

Fig. 3 is a cross-sectional view taken on the line 3--3 of Fig. 2; Fig. 4 is .a cross-sectional view taken on the line 6-6 of Fig. 3; Y g Fig. 5 is a cross-sectional view, similar to Fig. 3, of a portion of the device but with the valve member in a different position; I

Fig. 6 is a. cross-sectional view taken on the line 6+6 of Fi 5;

- Fig. '1 is a cross-sectional view taken on the line 1-1 of Fig. 5;

Fig. 8 is a cross-sectional view of a valve member employed in the embodiment illustrated in Figs/1 through 7; and

Fig. 9 is a top view of the motor housing shown in Fig. 3, the parts abovethe housing having been removed.

Referring more particularly to-Figs. 1 through 3 reference character H5 designates an air-tightcasing mounted on a pair. of wheels IIS and a .5

caster Ill. Casing II 5 comprises a horizontal,

preferably oval, portion H8 and a cylindrical portion H9 having a substantially vertical axis. A nozzle I20 is secured to one end of horizontal portion III! by means of spring clips I2I. annular flange I22 on a cylindrical mouthpiece I 23 is clamped between the. nozzle and the end of the casing. Secured to mouthpiece I23 is a dust-bag I 2i of suitable material, which is impervious with respect to dust, but allows the i5 passage therethrough of air. The shape of this bag is preferably that shown in Fig. 3. If desiredya flap valve I25 may be provided in the nozzle 520 in order to prevent the escape through the nozzle, when the vacuum cleaner is idle, of 20 dirt previously collected within the bag. Flap valve E25 may be pivotally mounted byrmeans of a well known type of hinge having a spring tending to hold the valve in closed position; and valve I125 is held open during operation of the cleaner by the passage of air through the nozzle.

surface on which the cleaner is supported by means of the wheels H6 and the caster III. A

handle I56, pivoted to the cleaner at I57, is pro: vided for moving the latter over the surface to be cleaned.

Mounted within the vertical cylindrical portion II 9 of the casing is an electric motor I21. 35 The motor includes a housing I28 and anarma- I ture shaft I29. The shaft I29 extends through both ends of the motor housing and is provided at either end with fan impellers I30 and "I. Impeller I is surrounded by a fan housing I32 40 supported by the motor housing andhaving an inlet opening I33 which is permanently in communication with the interior of easing IIB. Motor housing I28 is provided with openings I34 which establish communication between the interior of the motor housing and the interior of fan housing I32. Openings I34 constitute outlet openings for the lower impeller.

The lower end of the motor and fan-housing I32 are'surrounded by a guard I35, which may 50 consist of perforated sheet metal or a reinforced wire screen. The purpose of guard I35 is to prevent the dust bag I from beingdrawn into the inlet opening I38.

Fan impeller I3I is arranged to be rotated 5 within a fan housing comprising the upper part with.

- I23 is provided with apertures I31, which open into the spaces I38 bounded by an extension wall I39 of the motor housing, a rotatable valve memberuI 40v and radially extending walls I preferably cast integral with the motor housing. The shape of valve member I40 is shown in Fig. 8. The valve member is rotatably mounted within the extension wall I39 of the motor housing and is provided with an operating handle I42, which extends through a slot in the casing.

Adjacent to its periphery the valve member I40 is provided with a number of openings I43 whichcorrespond in number to the number of spaces I38. In the embodiment illustrated there are three'spaces I38 and three openings I43. Alternating with the spaces I33 are spaces I44 which arein communication with the interior of the casing I I9 by virtue of openings I45. The center of valve member I40 is provided with an opening I40 which constitutes the inlet opening for the upper fan impeller. Valve member I40 is provided around opening I46 with sections I41 01 a circular wall. The number of sections I4I is equal to the number oi spaces I38 or I44, which, as previously pointed out, in the present embodiment is three. The lower ends of sections I" contact a circular shoulder I48 formed on the motor housing. Arcuate webs I58 are formed between. radial walls I over spaces I44. These webs are of greater extent than openings I43 in valve member I40, so as to close the openings when the latter are turned into alignment there- The upper end of the cylindrical portion II9 of the casing is formed as a perforated plate I49. A filter I of cloth or other suitable material impregnated, if desired, with a disinfectant or deodorant, is held in place on the upper side of plate I49 by meanso'i a cap I5I, which may be adapted to frictionally engage the upper end of casing I I9. A perforated plate I52 is fixed within cap I5I seats to hold the filter I50 in place, and

' to prevent the filter from being blown up against I to reduce the resistance to airflow when the device is being used as. a suction, cleaner, while making it possible to exhaust all the air through the hose or the like attached to opening I 53 when it is desired .to use the cleaner as a blower.

With valve member I40 in the position shown in Figs. 3 and 4, the fan impellers I30 and I3I are connected for parallel flow of air. Rotation of impeller I30 causes air to be drawn in through nozzle I20, thrcTugh the dust bag and through inlet opening I33 in the fan housing I32. From here the air is ejected through openings I34 into the motor housing, where itserves to cool the motor. From the motor housing the air passes through openings I31 into the spacesl33. With the valve member I40 in the position shown, the openings I43 at the periphery thereof are in alignment with the spaces I33, and consequently the air passes into the'housing o! impeller I3I at the outer periphery thereof, which is,in effect, the outlet of this impeller. The rotation of impeller I3I draws air from the interior of easing II5 through the openings I45 into the space I44. With the valve member I40 in the position assumed, the vertical sections I41 are in alignment with the spaces I38, as clearly appears from Fig. i

4, and hence there is communication between spaces I44 and the center opening I46 in the valve member. Hence the air is drawn through space I44 into the inlet of impeller I3I and is discharged by the impeller into the outer periphery of the housing, where it joins the air discharged from impeller I30. The air from both of the impellers thence passes through perforated plate I49, filter I50, perforated plate I52 and through opening I53 and also openings I54, if these latter openings are open.

In the event that it is desired .to operate the fan impellers in series, handle I42 is moved to the other end of the slot whereby valve member I40 is turned to the positionshown in Figs. 5 and 6. Impeller. I30 supplies air to spaces I38 in the same mariner as previously described.

However, openings I43 in valve member I40 are no longer in alignment with spaces, I30, and the vertical walls I41 have also been moved out of alignment with these spaces, so that the air is free to flow through the central opening I46 into the valve member, as is clearly shown in Fig. 5.

This air is acted upon by impeller "IV and is dischar'gedirom the cleaner in the same manner as previously described. With thevalve member I40 in'this position, vertical walls I41 are in alignment with the spaces I44, and hence prevent the upper impeller I3I from drawing air directly from the interior of the casing through openings I45. Openings I43 in valve member I40 are closed due to the fact that they are in alignment with webs I50, thus assuring against recirculation of air discharged from impeller-HI back into the interior of the casing.

It will be seen that, for either positionof the valve member, at least one of the impellers circulates air through the motor housing. With the impellers connected in series, both oi them aid in this circulation. The lower impeller I30 discharges air into one end oi the motor housing. while theupper impeller I3I withdraws air from the other end of the housing.

While a more or less specific embodiment oi. the invention has been'disclosed, it will be obvious that other embodiments of the invention may be made. For example, more than two tan impellers. may be provided and connected in series or in parallel. The greater the number of pellers the greater the difference in efl'ect betw series and parallel connection. The scope ofthe present invention is to be limited only by the appended claims viewed in art. r

What I claim is:

the light of the prior 1. A vacuum cleaner including a motor having a housing, a fan impeller mounted at each end oi. said motor to be driven thereby, and means for alternatively. connecting said impellers for series or parallel flow of airtherethrough, one of said impellers being arranged to circulate air through'said housing during both series an parallel flow.

2. A vacuum cleaner including a motor having with said opening 01' air therethrough, one arranged to circulate air a housing, a fan impeller mounted at each end of said motor to be driven thereby, the interior of said housing forming a discharge passageway for one of said impellers, said housing being formed with an opening adjacent to'the other impeller, and movablevalve means associated for alternatively establishing communication between said opening and the inlet of said other impeller or the outlet of said other impeller.

4. A vacuum cleaner including a casing, a dust bag in said casing, a plurality of impeller fans in said casing including fan housings having inlets and outlets, the inlet of one of said housings being permanently in communication with the interior of said casing, means providing a passageway permanently in communication with the outlet of said one of said housings, a motor for driving said impellers located in said passageway, and movable valve means for establishing communication between said passageway and the inlet of the other of said housings and alternatively for establishing communication between said passageway and the outlet of said other housing and between the interior of said casing and inlet of said other housing.

5. A vacuum cleaner includinga casing, a dust bag in said casing, a plurality of impeller fans in said casing including fan housings having inlets and outlets, the inlet of one of said housings during parallel flow andbeing permanently in communication with the interior of said casing, a filter member, the outlet of the other of said housings being arranged in permanent communication with said filter member, means .providing a passageway permanently in communication with the outlet of said one of said housings, a motor for driving said impellers located in said passageway, and movable valve means for establishing communication between said passageway and the inlet of the other of said housings and alternatively for establishing communication between said passageway and the outlet of said other housing and between the casing and the inlet of said other housing.

6. A vacuum cleaner including a casing, a motor having a housing mounted within said casing, a fan impeller mounted at each end of said motor to be driven thereby, and means for alternatively connecting said impellers for series or parallelflow therethrough, one of said impellers being arranged to circulate air through said housing during parallel flow, the other of said impellers being arranged to circulate air between said casing and said housing during parallel flow and both of said impellers being arranged to circulate air through said housing during series .flow.

'7. A vacuum cleaner including a motor having a shaft, 2. fan impeller mounted at each end of said shaft to be driven thereby, and valve means for selectively connecting said impellers for series or parallel flow of air therethrough, said valve means being disposed between said motor and one of said impellers and formed with an opening through which said shaft extends.

a FREDRIK CARL-STEDT.

US2064587A 1933-07-08 1934-06-28 Vacuum cleaner Expired - Lifetime US2064587A (en)

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Application Number Priority Date Filing Date Title
DE433664X 1933-07-08

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Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422860A (en) * 1945-03-07 1947-06-24 Scovill Manufacturing Co Vacuum cleaner
US2424253A (en) * 1944-08-05 1947-07-22 Eureka Williams Corp Suction cleaner
US2450137A (en) * 1944-12-01 1948-09-28 Smith Corp A O Multistage centrifugal pump
US2484491A (en) * 1947-07-16 1949-10-11 William J Daugherty Movable filter type suction cleaner
US2721625A (en) * 1953-08-26 1955-10-25 Henney Motor Company Inc Canister type suction cleaner
US2740494A (en) * 1953-06-29 1956-04-03 Strapavac Corp Vacuum cleaners
US2744678A (en) * 1952-05-20 1956-05-08 Birtman Electric Co Vacuum cleaner suction device
US2881687A (en) * 1952-05-21 1959-04-14 Surface Combustion Corp Air supply system
US2889570A (en) * 1956-10-15 1959-06-09 Hoover Co Air supported suction cleaners
US3032955A (en) * 1956-06-07 1962-05-08 Burch Willie Dee Vacuum cleaners
US3444667A (en) * 1968-03-01 1969-05-20 Litton Systems Inc Electrostatic precipitator
US3477087A (en) * 1967-06-19 1969-11-11 Bon Aire Ind Inc Vacuum cleaner
US3906584A (en) * 1973-11-23 1975-09-23 Vernco Corp Vacuum cleaner with divided discharge
US4225999A (en) * 1979-04-20 1980-10-07 Health-Mor Inc. Multi-motor suction cleaner construction
US4678489A (en) * 1982-11-19 1987-07-07 John C. Bertelsen Filtering system for paper handling machines
US4884314A (en) * 1987-11-12 1989-12-05 Black & Decker Inc. Portable blower
US5664285A (en) * 1996-01-11 1997-09-09 Black & Decker Inc. Vacuum cleaner with combined filter element and collection unit
US5914416A (en) * 1994-04-29 1999-06-22 Vorwerk & Co. Interholding Gmbh Device for separating solid or liquid particles from a stream of gas
US6269518B1 (en) 1999-12-08 2001-08-07 Shell Electric Mfg. (Holdings) Co. Ltd. Bagless vacuum cleaner
US6484350B2 (en) 1999-12-08 2002-11-26 Shell Electric Mfg. (Holdings) Co. Ltd. Bagless canister vacuum cleaner
US6842942B2 (en) * 2001-09-18 2005-01-18 The Hoover Company Nozzle assembly removal arrangement
US20090246013A1 (en) * 2006-05-24 2009-10-01 Resmed Limited Compact Low Noise Efficient Blower for Cpap Devices
EP2255708A1 (en) * 2009-05-29 2010-12-01 Soteco S.p.A. Sucking device
US20120222263A1 (en) * 2011-03-03 2012-09-06 G.B.D. Corp. Suction motor and fan assembly housing construction for a surface cleaning apparatus
CN101496704B (en) 2008-02-01 2013-04-10 索特科股份公司 Pumping equipment
US8646149B2 (en) 2011-03-03 2014-02-11 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8739357B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp Filter construction for a surface cleaning apparatus
US8739359B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp. Configuration of a surface cleaning apparatus
US8763202B2 (en) 2011-03-03 2014-07-01 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8769767B2 (en) 2011-03-03 2014-07-08 G.B.D. Corp. Removable cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8813306B2 (en) 2011-03-03 2014-08-26 G.B.D. Corp. Openable side compartments for a surface cleaning apparatus
US8869345B2 (en) 2011-03-03 2014-10-28 G.B.D. Corp. Canister vacuum cleaner
US8973214B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8973212B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8978198B2 (en) 2011-03-03 2015-03-17 G.B.D. Corp. Filter housing for a surface cleaning apparatus
US9101252B2 (en) 2011-03-03 2015-08-11 G.B.D. Corp. Configuration of a surface cleaning apparatus
US9427128B2 (en) 2012-05-29 2016-08-30 Bissell Homecare, Inc. Extraction cleaner

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424253A (en) * 1944-08-05 1947-07-22 Eureka Williams Corp Suction cleaner
US2450137A (en) * 1944-12-01 1948-09-28 Smith Corp A O Multistage centrifugal pump
US2422860A (en) * 1945-03-07 1947-06-24 Scovill Manufacturing Co Vacuum cleaner
US2484491A (en) * 1947-07-16 1949-10-11 William J Daugherty Movable filter type suction cleaner
US2744678A (en) * 1952-05-20 1956-05-08 Birtman Electric Co Vacuum cleaner suction device
US2881687A (en) * 1952-05-21 1959-04-14 Surface Combustion Corp Air supply system
US2740494A (en) * 1953-06-29 1956-04-03 Strapavac Corp Vacuum cleaners
US2721625A (en) * 1953-08-26 1955-10-25 Henney Motor Company Inc Canister type suction cleaner
US3032955A (en) * 1956-06-07 1962-05-08 Burch Willie Dee Vacuum cleaners
US2889570A (en) * 1956-10-15 1959-06-09 Hoover Co Air supported suction cleaners
US3477087A (en) * 1967-06-19 1969-11-11 Bon Aire Ind Inc Vacuum cleaner
US3444667A (en) * 1968-03-01 1969-05-20 Litton Systems Inc Electrostatic precipitator
US3906584A (en) * 1973-11-23 1975-09-23 Vernco Corp Vacuum cleaner with divided discharge
US4225999A (en) * 1979-04-20 1980-10-07 Health-Mor Inc. Multi-motor suction cleaner construction
US4678489A (en) * 1982-11-19 1987-07-07 John C. Bertelsen Filtering system for paper handling machines
US4884314A (en) * 1987-11-12 1989-12-05 Black & Decker Inc. Portable blower
US5914416A (en) * 1994-04-29 1999-06-22 Vorwerk & Co. Interholding Gmbh Device for separating solid or liquid particles from a stream of gas
US5664285A (en) * 1996-01-11 1997-09-09 Black & Decker Inc. Vacuum cleaner with combined filter element and collection unit
US5829090A (en) * 1996-01-11 1998-11-03 Black & Decker Inc. Vacuum cleaner with combined filter element and collection unit
US6269518B1 (en) 1999-12-08 2001-08-07 Shell Electric Mfg. (Holdings) Co. Ltd. Bagless vacuum cleaner
US6484350B2 (en) 1999-12-08 2002-11-26 Shell Electric Mfg. (Holdings) Co. Ltd. Bagless canister vacuum cleaner
US6842942B2 (en) * 2001-09-18 2005-01-18 The Hoover Company Nozzle assembly removal arrangement
US8267648B2 (en) 2006-05-24 2012-09-18 Resmed Motor Technologies Inc. Compact low noise efficient blower for CPAP devices
US9677563B2 (en) 2006-05-24 2017-06-13 Resmed Motor Technologies Inc. Compact low noise efficient blower for CPAP devices
US7866944B2 (en) * 2006-05-24 2011-01-11 Resmed Motor Technologies Inc Compact low noise efficient blower for CPAP devices
US20110073110A1 (en) * 2006-05-24 2011-03-31 Resmed Motor Technologies Inc. Compact low noise efficient blower for CPAP devices
US8734097B2 (en) 2006-05-24 2014-05-27 Resmed Motor Technologies Inc Compact low noise efficient blower for CPAP devices
US20090246013A1 (en) * 2006-05-24 2009-10-01 Resmed Limited Compact Low Noise Efficient Blower for Cpap Devices
CN101496704B (en) 2008-02-01 2013-04-10 索特科股份公司 Pumping equipment
EP2255708A1 (en) * 2009-05-29 2010-12-01 Soteco S.p.A. Sucking device
US8813306B2 (en) 2011-03-03 2014-08-26 G.B.D. Corp. Openable side compartments for a surface cleaning apparatus
US20120222263A1 (en) * 2011-03-03 2012-09-06 G.B.D. Corp. Suction motor and fan assembly housing construction for a surface cleaning apparatus
US8739357B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp Filter construction for a surface cleaning apparatus
US8739359B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp. Configuration of a surface cleaning apparatus
US8763202B2 (en) 2011-03-03 2014-07-01 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8769767B2 (en) 2011-03-03 2014-07-08 G.B.D. Corp. Removable cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8646149B2 (en) 2011-03-03 2014-02-11 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8869345B2 (en) 2011-03-03 2014-10-28 G.B.D. Corp. Canister vacuum cleaner
US8528160B2 (en) * 2011-03-03 2013-09-10 G.B.D. Corp. Suction motor and fan assembly housing construction for a surface cleaning apparatus
US8973212B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8978198B2 (en) 2011-03-03 2015-03-17 G.B.D. Corp. Filter housing for a surface cleaning apparatus
US9101252B2 (en) 2011-03-03 2015-08-11 G.B.D. Corp. Configuration of a surface cleaning apparatus
US8973214B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US9427128B2 (en) 2012-05-29 2016-08-30 Bissell Homecare, Inc. Extraction cleaner

Also Published As

Publication number Publication date Type
GB433664A (en) 1935-08-19 application
FR775983A (en) 1935-01-14 grant

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