CA2495150A1 - Vacuum cleaner with twin independently driven agitators - Google Patents
Vacuum cleaner with twin independently driven agitators Download PDFInfo
- Publication number
- CA2495150A1 CA2495150A1 CA002495150A CA2495150A CA2495150A1 CA 2495150 A1 CA2495150 A1 CA 2495150A1 CA 002495150 A CA002495150 A CA 002495150A CA 2495150 A CA2495150 A CA 2495150A CA 2495150 A1 CA2495150 A1 CA 2495150A1
- Authority
- CA
- Canada
- Prior art keywords
- agitator
- cleaning apparatus
- nozzle assembly
- floor cleaning
- agitators
- 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.)
- Abandoned
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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
- A47L5/30—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with driven dust-loosening tools, e.g. rotating brushes
-
- 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
- A47L9/04—Nozzles with driven brushes or agitators
- A47L9/0405—Driving means for the brushes or agitators
- A47L9/0411—Driving means for the brushes or agitators driven by electric motor
-
- 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
- A47L9/04—Nozzles with driven brushes or agitators
- A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
- A47L9/0466—Rotating tools
- A47L9/0477—Rolls
-
- 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
- A47L9/04—Nozzles with driven brushes or agitators
- A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
- A47L9/0488—Combinations or arrangements of several tools, e.g. edge cleaning tools
Abstract
A floor cleaning apparatus includes a nozzle assembly and a canister assembly. A suction generator is carried on the nozzle assembly or the canister assembly. A dirt collection vessel is also carried on the nozzle assembly or the canister assembly. Still further, a first agitator with a first internal drive motor and a second agitator with a second internal drive motor are both carried on the nozzle assembly. Additionally, a method is also provided. The method includes the steps of equipping a floor cleaning apparatus with first and second agitators and independently driving those agitators.
Description
VAC~fT~UM CLEANER WITH TWIN
INDEPE:C~TDENTLY DRIVEN AGITATORS
This application c;laims the benefit of U.S. Provisional Patent Application Serial No. ~i U/539,467 filed on January 27, 2004.
Technical Field The present invention relates generally to the vacuum cleaner art and, more particularly, to a vacuum cleaner incorporating twin agitators with each agitator drive:» by an internal drive motor.
ac ground of the Inve~p,~
A vacuum clean~;r is an electro-mechanical appliance utilized to effect the dry removal o E' dust, dirt and other small debris from carpets, rugs, fabrics or other surface;r in both domestic and industrial environments. In order to achieve the desired dirt and dust removal, a rotary agitator is provided to beat dirt and dust from the nap of the carpet and a pressure drop or vacuum is used to force air entrained with this dirt and dust into the nozzle of the vacuum c:l~~aner. The particulate-laden air is then drawn through a bag-like filter, a dirt cup or a cyclonic separation chamber and filter combination which traps the dirt and dust, while substantially clean air is exhausted by an elecia-ically operated fan that is driven by an on board motor. It is this fan and motor arrangement that generates~the drop in air pressure necessary to prc>vide the desired cleaning action. Thus, the fan and motor arrangement is co:nmnonly known as the vacuum, or suction generator.
Many advanced, lxigh performance vacuum cleaners incorporate a dual motor system. In sixch a system, a separate agitator drive motor is provided in addition to tk~e motor of the suction generator. In most designs the separate agitator drive motor is mounted on the nozzle assembly adjacent the agitator. A. gear drive or more commonly a pulley and belt arrangernent transmits ttm power from the agitator motor drive shaft to the agitator.
V'Jhile very effective for its intended purpose, the mounting of a separate agitator drive rc~otor in front of or behind the agitator necessitates a significant increase in tlk~c; fore-aft length of the nozzle assembly in order to accommodate the motor. This not only increases the overall weight of the nozzle assembly but also the wheelbase and/or the body overhang beyond the wheels. All of then; characteristics negatively impact the ease of manipulation of the vacaxum cleaner in and around furniture and, therefore, are a detriment.
In contrast, it is ~;~ossible to mount the agitator drive motor above the agitator. In this situatia:n, no increase in the length of the nozzle asse~.nbly and/or the wheelbase th.~~reof is necessary to accommodate the agitator motor. 'The height of ttia nozzle assembly must, however, be increased significantly to provide motor clearance. This unacceptably restricts the use of the vacuum cleaner as the resulting higher profile will not clear many overhanging obstructions such as bed frames, tables and chair frames.
Accordingly, this is geriera.lly recognized to be an unacceptable solution.
Another possiblt: alternative is the mounting of the separate agitator drive motor within the av;;itator itself. Such an arrangement makes use of what would otherwise b~~ lost space within the agitator. Further, it allows the agitator motor to be ~~ccommodated without any substantial increase in the height or length of tt~e nozzle assembly. Thus, the vacuum cleaner may be more easily manipul:~ted on a shorter wheel base and is of lighter overall weight. It also includes the desired low profile which allows cleaning under bed frames, table;, chairs and other such obj ects.
More recently, it ;has been determined that vacuum cleaners equipped with multiple agitators provide a performance advantage resulting in enhanced cleaning efl:iciency. The present invention relates to a multi-agitator vacuum cleaner wherein each agitator is independently driven and includes its own interna.Fly mounted drive motor. Such a vacuum cleaner provides maximum cleaczing performance while also limiting the height and footprint of the nozzle ftssembly. As a consequence, the vacuum cleaner is easy to maneuver and h~us a relatively low profile so as to allow cleaning under beds, chairs and the like.
_S;r of the Inventi~~
In accordance w:i th the purposes of the present invention as described herein, an im~yroved floor cleaning apparatus is provided. That floor cleaning apparatu;3 comprises a nozzle assembly, a canister assembly and a suction generator harried on one of the nozzle assembly and the canister assembly. Additionally, the floor cleaning apparatus includes a dirt collection vessel al,~o carried on one of the canister assembly and the nozzle assembly. Still iiarther, a first agitator having a first internal drive motor is carried on the nozzle assembly. Additionally, a second agitator having a second internal drive motor is earned on the nozzle assembly.
INDEPE:C~TDENTLY DRIVEN AGITATORS
This application c;laims the benefit of U.S. Provisional Patent Application Serial No. ~i U/539,467 filed on January 27, 2004.
Technical Field The present invention relates generally to the vacuum cleaner art and, more particularly, to a vacuum cleaner incorporating twin agitators with each agitator drive:» by an internal drive motor.
ac ground of the Inve~p,~
A vacuum clean~;r is an electro-mechanical appliance utilized to effect the dry removal o E' dust, dirt and other small debris from carpets, rugs, fabrics or other surface;r in both domestic and industrial environments. In order to achieve the desired dirt and dust removal, a rotary agitator is provided to beat dirt and dust from the nap of the carpet and a pressure drop or vacuum is used to force air entrained with this dirt and dust into the nozzle of the vacuum c:l~~aner. The particulate-laden air is then drawn through a bag-like filter, a dirt cup or a cyclonic separation chamber and filter combination which traps the dirt and dust, while substantially clean air is exhausted by an elecia-ically operated fan that is driven by an on board motor. It is this fan and motor arrangement that generates~the drop in air pressure necessary to prc>vide the desired cleaning action. Thus, the fan and motor arrangement is co:nmnonly known as the vacuum, or suction generator.
Many advanced, lxigh performance vacuum cleaners incorporate a dual motor system. In sixch a system, a separate agitator drive motor is provided in addition to tk~e motor of the suction generator. In most designs the separate agitator drive motor is mounted on the nozzle assembly adjacent the agitator. A. gear drive or more commonly a pulley and belt arrangernent transmits ttm power from the agitator motor drive shaft to the agitator.
V'Jhile very effective for its intended purpose, the mounting of a separate agitator drive rc~otor in front of or behind the agitator necessitates a significant increase in tlk~c; fore-aft length of the nozzle assembly in order to accommodate the motor. This not only increases the overall weight of the nozzle assembly but also the wheelbase and/or the body overhang beyond the wheels. All of then; characteristics negatively impact the ease of manipulation of the vacaxum cleaner in and around furniture and, therefore, are a detriment.
In contrast, it is ~;~ossible to mount the agitator drive motor above the agitator. In this situatia:n, no increase in the length of the nozzle asse~.nbly and/or the wheelbase th.~~reof is necessary to accommodate the agitator motor. 'The height of ttia nozzle assembly must, however, be increased significantly to provide motor clearance. This unacceptably restricts the use of the vacuum cleaner as the resulting higher profile will not clear many overhanging obstructions such as bed frames, tables and chair frames.
Accordingly, this is geriera.lly recognized to be an unacceptable solution.
Another possiblt: alternative is the mounting of the separate agitator drive motor within the av;;itator itself. Such an arrangement makes use of what would otherwise b~~ lost space within the agitator. Further, it allows the agitator motor to be ~~ccommodated without any substantial increase in the height or length of tt~e nozzle assembly. Thus, the vacuum cleaner may be more easily manipul:~ted on a shorter wheel base and is of lighter overall weight. It also includes the desired low profile which allows cleaning under bed frames, table;, chairs and other such obj ects.
More recently, it ;has been determined that vacuum cleaners equipped with multiple agitators provide a performance advantage resulting in enhanced cleaning efl:iciency. The present invention relates to a multi-agitator vacuum cleaner wherein each agitator is independently driven and includes its own interna.Fly mounted drive motor. Such a vacuum cleaner provides maximum cleaczing performance while also limiting the height and footprint of the nozzle ftssembly. As a consequence, the vacuum cleaner is easy to maneuver and h~us a relatively low profile so as to allow cleaning under beds, chairs and the like.
_S;r of the Inventi~~
In accordance w:i th the purposes of the present invention as described herein, an im~yroved floor cleaning apparatus is provided. That floor cleaning apparatu;3 comprises a nozzle assembly, a canister assembly and a suction generator harried on one of the nozzle assembly and the canister assembly. Additionally, the floor cleaning apparatus includes a dirt collection vessel al,~o carried on one of the canister assembly and the nozzle assembly. Still iiarther, a first agitator having a first internal drive motor is carried on the nozzle assembly. Additionally, a second agitator having a second internal drive motor is earned on the nozzle assembly.
The canister assembly may be pivotally connected to the nozzle assembly. Further, the dirt collection vessel may take any of various forms including but not limite~~, to a filter bag, a dirt cup and a cyclonic airflow chamber. Further, the cleaning apparatus itself may be a device selected ~5 from a group consisting of an upright vacuum cleaner, a canister vacuum cleaner, a hand-held vac; uum cleaner and an extractor.
Alternatively, the; present invention may be described as a floor care cleaning apparatus com~yrising a nozzle assembly, a canister assembly, a suction generator carrie~;l on one of the nozzle assembly or the canister ~0 assembly and a dirt collE>ction vessel carried on one of the nozzle or the canister assembly. The apparatus further includes a first agitator and first agitator drive motor and a second agitator and second agitator drive motor.
Thus, the two agitators Fine independently powered.
In accordance w:i~th yet another aspect of the present invention, a S method is disclosed .for 5roviding an improved floor cleaning apparatus.
The method includes the; steps of equipping the floor cleaning apparatus with a first agitator and ~~. second agitator and independently driving those two agitators. The agitt~tors may be driven at different speeds and/or in different directions.
20 Advantageously;. the floor cleaning apparatus provides enhanced cleaning performance arid a relatively low profile and compact nozzle assembly that is easily rnaneuvered over a surface to be cleaned and has the necessary clearance to lm used under beds, chairs and the like.
In the following description there is shown and described a preferred r5 embodiment of this inv~;uiti.on, simply by way of illustration of one of the modes best suited to carry out the invention. As it will be realized, the invention is capable of other different embodiments and its several details are capable of modifica~.ion in various, obvious aspects all without departing from the invention. Accordingly, the drawings and descriptions will be regarded as illustrative in nature and not as restrictive.
Alternatively, the; present invention may be described as a floor care cleaning apparatus com~yrising a nozzle assembly, a canister assembly, a suction generator carrie~;l on one of the nozzle assembly or the canister ~0 assembly and a dirt collE>ction vessel carried on one of the nozzle or the canister assembly. The apparatus further includes a first agitator and first agitator drive motor and a second agitator and second agitator drive motor.
Thus, the two agitators Fine independently powered.
In accordance w:i~th yet another aspect of the present invention, a S method is disclosed .for 5roviding an improved floor cleaning apparatus.
The method includes the; steps of equipping the floor cleaning apparatus with a first agitator and ~~. second agitator and independently driving those two agitators. The agitt~tors may be driven at different speeds and/or in different directions.
20 Advantageously;. the floor cleaning apparatus provides enhanced cleaning performance arid a relatively low profile and compact nozzle assembly that is easily rnaneuvered over a surface to be cleaned and has the necessary clearance to lm used under beds, chairs and the like.
In the following description there is shown and described a preferred r5 embodiment of this inv~;uiti.on, simply by way of illustration of one of the modes best suited to carry out the invention. As it will be realized, the invention is capable of other different embodiments and its several details are capable of modifica~.ion in various, obvious aspects all without departing from the invention. Accordingly, the drawings and descriptions will be regarded as illustrative in nature and not as restrictive.
5 Brief Description of the_II?raving The accompanyi~a.k; drawing incorporated in and forming a part. of the specification, illustr~.tes several aspects of the present invention, and together with the descri:ytion serves to explain certain principles of the invention. In the drawuc~g:
Figure 1 is a per,c~ective view of a floor cleaning apparatus of the present invention, illustCated in the form of an upright vacuum cleaner;
Figure 2 is a tram:verse sectional view of the vacuum cleaner through the first agitato r ; and Figure 3 is a det~~iled cross-sectional view of the first agitator and gear drive showing the ~~,rigagement therebetween.
Reference will n~~~w be made in detail to the present preferred embodiment of the inveyition, an example of which is illustrated in the accompanying drawing"
Reference is nov~~ made to Figure 1 showing a floor cleaning apparatus 10 of the presc;nt invention. As illustrated, that floor cleaning apparatus 10 takes the fc~r~ra of an upright vacuum cleaner. It should be appreciated, however, that the floor cleaning apparatus may also take the form of a canister vacuum cleaner, a hand-held vacuum cleaner or even an extractor.
Figure 1 is a per,c~ective view of a floor cleaning apparatus of the present invention, illustCated in the form of an upright vacuum cleaner;
Figure 2 is a tram:verse sectional view of the vacuum cleaner through the first agitato r ; and Figure 3 is a det~~iled cross-sectional view of the first agitator and gear drive showing the ~~,rigagement therebetween.
Reference will n~~~w be made in detail to the present preferred embodiment of the inveyition, an example of which is illustrated in the accompanying drawing"
Reference is nov~~ made to Figure 1 showing a floor cleaning apparatus 10 of the presc;nt invention. As illustrated, that floor cleaning apparatus 10 takes the fc~r~ra of an upright vacuum cleaner. It should be appreciated, however, that the floor cleaning apparatus may also take the form of a canister vacuum cleaner, a hand-held vacuum cleaner or even an extractor.
T:he overall basic. design of the floor cleaning apparatus 10 is generally well known ins the art. In the typical arrangement, the floor cleaning apparatus 10 irtcludes a housing 14 that comprises the nozzle assembly 16 and the canister assembly 18. The canister assembly 18 further includes the handle 20 ~cnd the hand grip 22. The hand grip 22 carries a control switch 24 for tu:raing the floor cleaning apparatus 10 on and off. Of course, electrical power i.s supplied to the floor cleaning apparatus 10 from a standard electrical wa;f l outlet through a cord (not shown). Alternatively, the floor cleaning apparatus 10 could be powered by an onboard battery.
At the lower por~:ion of the canister assembly 18, rear wheels (not shown) are provided to aupport the weight of the floor cleaning apparatus 10. A second set of whc;els (also not shown) allow the operator to raise and lower the nozzle assemb ly 16 through selective manipulation of the height adjustment switch 28. auch a height adjustment mechanism is well known in the art and is exempla Pied, for example, by the arrangement incorporated into the Kenmore Progr~~;ssive vacuum cleaner currently available in the marketplace. To allow i:or convenient storage of the floor cleaning apparatus 10, a foot latc;;h 30 functions to lock the canister assembly 18 in an upright position, as s~~own in Figure 1. When the foot latch 30 is released, the canister as,wmbly 18 may be pivoted relative to the nozzle assembly 16 as the floor cleaning apparatus 10 is manipulated to clean the floor.
The canister assc::mbly 18 also carries an internal chamber 32 that houses a suction generator 33 (i.e. a state of the art fan and motor combination) and a dirt collection vessel 34 for removing dirt or dust entrained in the air stre~im as it passes from the nozzle assembly 16 to the suction generator. The canister assembly 18 may also carry a final filtration cartridge 48 to trap small particulates and prevent their reintroduction into the environment througl~~ the exhaust air stream.
The nozzle assena.bly 16 includes a nozzle and agitator cavity 36 that houses multiple rot;~,tW g agitators 38. The agitators 38 shown are each independently and rotat~.bly driven by a motor 40 and cooperating ge2~r drive 42 housed within the agitator and described in greater detail below (see Figures 2 and 3). Its the illustrated floor cleaning apparatus 10, the scrubbing action of the rotary agitators 38 and the negative air pressure created by the suction gE;nerator 33 cooperate to brush and beat dirt and dust from the nap of the: carpet being cleaned and then draw the dirt and dust laden air from the ~~gitator cavity 36 to the dirt collection vessel 34.
Specifically, the dirt an~i. dust laden air passes serially through a suction inlet and hose and/or an. integrally molded conduit in the nozzle assembly 16 andlor canister assenubly 18 as is known in the art. Next, it is delivered into the dirt collection vessel 34 held in the chamber 32. The vessel 34 serves to trap the suspended dirt, dust and other particles inside while allowing the now clean ;sir to pass freely through the porous wall thereof and then through the sucaion generator 33, final filtration cartridge 48 and ultimately to the enviror...xnent through the exhaust port 50.
As illustrated, the dirt collection vessel 34 takes the form of a dust or filter bag of a type well :mown in the art. Of course, it should be appreciated that the dirt collection vessel could also be a dirt cup or even a cyclonic separation charuber if desired. Essentially substantially any vessel capable of collecting dirt may be utilized.
Reference is now made to Figures 2 and 3 which show the mounting of the agitator motor 40 and associated gear drive 42 in one of the agitators 38 in detail. As shown, the agitator 38 is mounted for rotation relative to the nozzle assembly 16. Specifically, a first end of the agitator 38 includes an end cap 52 which is ;supported on bearings 54 on a stub shaft 55 held in mounting block 56 keyed. into slot 58 in the side of the nozzle assembly 16.
An end cap 60 at the opposite end of the agitator 38 is supported on bearings 62 mounted on the housing 64 of the motor 40. As should be appreciated, the motor ~ECI is fixed to the nozzle assembly 16 by means of the mounting block 66 i'_i:~ced to the motor housing 64 and keyed in the; slot 68 in the side of the no~ate assembly.
The motor 40 drives a shaft 70 including gear teeth 72. The drive shaft 70 extends througai a bearing 74 held in the hub 76 of the planetary gear set earner 78. In tla.e most preferred embodiment a fan 80 is keyed or otherwise secured to tht: distal end of the drive shaft 70.
The planetary ge~u set carrier 78 includes three stub shafts 82 that each carry a planetary g~;ar 84. Each of the planetary gears 84 include teeth that mesh with the gear teeth 72 of the drive shaft 70. Additionally, the planetary gears 82 mesh with the teeth of an annular gear 86 that is fixed to the agitator motor hous:cng 64 by pin or other means. Thus, it should be appreciated that as the drive shaft 70 is driven by the motor 40, the planetary gears 84 are d~-a.ven around the annular gear 86, thereby causing the planetary gear set carrier 78 to rotate. Planetary gear set carrier 78 also includes a drive ring 88 and associated rubber drive boot 87 which includes a series of spaced channels 89 that receive and engage axial ribs 91 projecting inwardly radially from the inner wall of the agitator 38. Thus, the rotation of the planetary gear set earner 78 is transmitted by the drive ring 88 and drive boot l37 directly to and causes like rotation of the agitator 38. The rubber drive b~:~ot 87 provides the necessary damping to insure the smooth transmission of power to the agitator. Simultaneously with the rotation of the planetary l;ear set Garner 78 and agitator 38, the drive shaft 70 also drives the fan 8() at a ratio ofbetween 4-1 to 10-1 (e.g: 6-1) with respect to the agitator 3~~.. The resulting rapid rotation of the fan 80 helps to ensure proper cooling of the agitator motor 40 during its operation.
More specifically, the floor cleaning apparatus 10 of the present invention incorporates v novel air cooling system or circuit, which will now be described in detail. :specifically, air is drawn into the floor cleaning apparatus 10 through a went 90 at the upper rear face of the nozzle assembly 16 by operation of the suction generator 33 (note action arrow A in Figure 2). Specifically, the air ;F.ixst passes through a filter (not shown) of foam rubber or other appropriate material into the illumination compartment 94 defined between the up).~er transparent window 96 and the lower transparent window 98 ~~rhich allow viewing of the operation of the agitator 38. This air then passes over and around the light source 100 so as to provide cooling thereto ;note action arrows B in Figure 2). Next, the air is drawn through the pass~~,geway 102 in the nozzle assembly 16 and around and through an openings 104 in the end cap 52 (note action arrow C). The air then moves thrnugh i:he lumen of the agitator 3 8 to the fan 80 driven by means of the agitator drive motor 40 (note action arrows D). The fan 80 forces the air through o.yenings 106 in the planetary gear set carrier 78 (see also Figure 3) and then siround the.annular gear 86 before it passes through the housing 64 of the motor 40 (note action arrows E and F}.
After passing ov~;r~ the windings and other internal components (not shown) of the agitator rr~otar 40 for purposes of heat exchange and cooling, the air passes through the passageway 108 into the manifold 110 (note action arrow G). Maniivyld 110 includes an outlet (not shown) in fluid communication with the; tigitator cavity 36. Of course, as noted above, the agitator cavity 36 is in ckirect fluid communication with a suction inlet 44 that leads through the hose 46 into the dirt collection vessel 34 in chamber 32.
5 While only one a.~~itator 38 has been illustrated and described in detail, it should be appr~:;ciated that both agitators 38 have identical structures: that is, each ,a.gitator 3 8 has its own drive motor. As a result, the agitators 38 are indepen.nently driven. The agitators 38 may be driven by their individual, ind~pen.dent internal motors in different directions and/or 10 even at different speeds as desired to provide the greatest cleaning efficiency. Thus, desigy flexibility and performance are all maximized.
The foregoing description of a preferred embodiment of the invention has been presented. for purposes of illustration and description. It is not intended to be ex&mustive or to limit the invention to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. For e:e.ample, while two agitators are illustrated, it should be appreciated that thre~E; or even more could be provided.
The embodiment: was chosen and described to provide the best illustration of the principles of the invention and its practical application to thereby enable one of oc~dinary skill in the art to utilize the invention in various embodiments a~~.d with various modifications as are suited to the particular use contemplF~ted: All such modifications and variations are within the scope of the invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally and equitably errtitled.
At the lower por~:ion of the canister assembly 18, rear wheels (not shown) are provided to aupport the weight of the floor cleaning apparatus 10. A second set of whc;els (also not shown) allow the operator to raise and lower the nozzle assemb ly 16 through selective manipulation of the height adjustment switch 28. auch a height adjustment mechanism is well known in the art and is exempla Pied, for example, by the arrangement incorporated into the Kenmore Progr~~;ssive vacuum cleaner currently available in the marketplace. To allow i:or convenient storage of the floor cleaning apparatus 10, a foot latc;;h 30 functions to lock the canister assembly 18 in an upright position, as s~~own in Figure 1. When the foot latch 30 is released, the canister as,wmbly 18 may be pivoted relative to the nozzle assembly 16 as the floor cleaning apparatus 10 is manipulated to clean the floor.
The canister assc::mbly 18 also carries an internal chamber 32 that houses a suction generator 33 (i.e. a state of the art fan and motor combination) and a dirt collection vessel 34 for removing dirt or dust entrained in the air stre~im as it passes from the nozzle assembly 16 to the suction generator. The canister assembly 18 may also carry a final filtration cartridge 48 to trap small particulates and prevent their reintroduction into the environment througl~~ the exhaust air stream.
The nozzle assena.bly 16 includes a nozzle and agitator cavity 36 that houses multiple rot;~,tW g agitators 38. The agitators 38 shown are each independently and rotat~.bly driven by a motor 40 and cooperating ge2~r drive 42 housed within the agitator and described in greater detail below (see Figures 2 and 3). Its the illustrated floor cleaning apparatus 10, the scrubbing action of the rotary agitators 38 and the negative air pressure created by the suction gE;nerator 33 cooperate to brush and beat dirt and dust from the nap of the: carpet being cleaned and then draw the dirt and dust laden air from the ~~gitator cavity 36 to the dirt collection vessel 34.
Specifically, the dirt an~i. dust laden air passes serially through a suction inlet and hose and/or an. integrally molded conduit in the nozzle assembly 16 andlor canister assenubly 18 as is known in the art. Next, it is delivered into the dirt collection vessel 34 held in the chamber 32. The vessel 34 serves to trap the suspended dirt, dust and other particles inside while allowing the now clean ;sir to pass freely through the porous wall thereof and then through the sucaion generator 33, final filtration cartridge 48 and ultimately to the enviror...xnent through the exhaust port 50.
As illustrated, the dirt collection vessel 34 takes the form of a dust or filter bag of a type well :mown in the art. Of course, it should be appreciated that the dirt collection vessel could also be a dirt cup or even a cyclonic separation charuber if desired. Essentially substantially any vessel capable of collecting dirt may be utilized.
Reference is now made to Figures 2 and 3 which show the mounting of the agitator motor 40 and associated gear drive 42 in one of the agitators 38 in detail. As shown, the agitator 38 is mounted for rotation relative to the nozzle assembly 16. Specifically, a first end of the agitator 38 includes an end cap 52 which is ;supported on bearings 54 on a stub shaft 55 held in mounting block 56 keyed. into slot 58 in the side of the nozzle assembly 16.
An end cap 60 at the opposite end of the agitator 38 is supported on bearings 62 mounted on the housing 64 of the motor 40. As should be appreciated, the motor ~ECI is fixed to the nozzle assembly 16 by means of the mounting block 66 i'_i:~ced to the motor housing 64 and keyed in the; slot 68 in the side of the no~ate assembly.
The motor 40 drives a shaft 70 including gear teeth 72. The drive shaft 70 extends througai a bearing 74 held in the hub 76 of the planetary gear set earner 78. In tla.e most preferred embodiment a fan 80 is keyed or otherwise secured to tht: distal end of the drive shaft 70.
The planetary ge~u set carrier 78 includes three stub shafts 82 that each carry a planetary g~;ar 84. Each of the planetary gears 84 include teeth that mesh with the gear teeth 72 of the drive shaft 70. Additionally, the planetary gears 82 mesh with the teeth of an annular gear 86 that is fixed to the agitator motor hous:cng 64 by pin or other means. Thus, it should be appreciated that as the drive shaft 70 is driven by the motor 40, the planetary gears 84 are d~-a.ven around the annular gear 86, thereby causing the planetary gear set carrier 78 to rotate. Planetary gear set carrier 78 also includes a drive ring 88 and associated rubber drive boot 87 which includes a series of spaced channels 89 that receive and engage axial ribs 91 projecting inwardly radially from the inner wall of the agitator 38. Thus, the rotation of the planetary gear set earner 78 is transmitted by the drive ring 88 and drive boot l37 directly to and causes like rotation of the agitator 38. The rubber drive b~:~ot 87 provides the necessary damping to insure the smooth transmission of power to the agitator. Simultaneously with the rotation of the planetary l;ear set Garner 78 and agitator 38, the drive shaft 70 also drives the fan 8() at a ratio ofbetween 4-1 to 10-1 (e.g: 6-1) with respect to the agitator 3~~.. The resulting rapid rotation of the fan 80 helps to ensure proper cooling of the agitator motor 40 during its operation.
More specifically, the floor cleaning apparatus 10 of the present invention incorporates v novel air cooling system or circuit, which will now be described in detail. :specifically, air is drawn into the floor cleaning apparatus 10 through a went 90 at the upper rear face of the nozzle assembly 16 by operation of the suction generator 33 (note action arrow A in Figure 2). Specifically, the air ;F.ixst passes through a filter (not shown) of foam rubber or other appropriate material into the illumination compartment 94 defined between the up).~er transparent window 96 and the lower transparent window 98 ~~rhich allow viewing of the operation of the agitator 38. This air then passes over and around the light source 100 so as to provide cooling thereto ;note action arrows B in Figure 2). Next, the air is drawn through the pass~~,geway 102 in the nozzle assembly 16 and around and through an openings 104 in the end cap 52 (note action arrow C). The air then moves thrnugh i:he lumen of the agitator 3 8 to the fan 80 driven by means of the agitator drive motor 40 (note action arrows D). The fan 80 forces the air through o.yenings 106 in the planetary gear set carrier 78 (see also Figure 3) and then siround the.annular gear 86 before it passes through the housing 64 of the motor 40 (note action arrows E and F}.
After passing ov~;r~ the windings and other internal components (not shown) of the agitator rr~otar 40 for purposes of heat exchange and cooling, the air passes through the passageway 108 into the manifold 110 (note action arrow G). Maniivyld 110 includes an outlet (not shown) in fluid communication with the; tigitator cavity 36. Of course, as noted above, the agitator cavity 36 is in ckirect fluid communication with a suction inlet 44 that leads through the hose 46 into the dirt collection vessel 34 in chamber 32.
5 While only one a.~~itator 38 has been illustrated and described in detail, it should be appr~:;ciated that both agitators 38 have identical structures: that is, each ,a.gitator 3 8 has its own drive motor. As a result, the agitators 38 are indepen.nently driven. The agitators 38 may be driven by their individual, ind~pen.dent internal motors in different directions and/or 10 even at different speeds as desired to provide the greatest cleaning efficiency. Thus, desigy flexibility and performance are all maximized.
The foregoing description of a preferred embodiment of the invention has been presented. for purposes of illustration and description. It is not intended to be ex&mustive or to limit the invention to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. For e:e.ample, while two agitators are illustrated, it should be appreciated that thre~E; or even more could be provided.
The embodiment: was chosen and described to provide the best illustration of the principles of the invention and its practical application to thereby enable one of oc~dinary skill in the art to utilize the invention in various embodiments a~~.d with various modifications as are suited to the particular use contemplF~ted: All such modifications and variations are within the scope of the invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally and equitably errtitled.
Claims (15)
1. A floor cleaning apparatus, comprising:
a nozzle assembly;
a canister assembly;
a suction generator carried on one of said nozzle assembly and said canister assembly;
a dirt collection vessel carried on one of said canister assembly and said nozzle assembly;
a first agitator having a first internal drive motor carried on said nozzle assembly; and a second agitator having a second internal drive motor carried on said nozzle assembly.
a nozzle assembly;
a canister assembly;
a suction generator carried on one of said nozzle assembly and said canister assembly;
a dirt collection vessel carried on one of said canister assembly and said nozzle assembly;
a first agitator having a first internal drive motor carried on said nozzle assembly; and a second agitator having a second internal drive motor carried on said nozzle assembly.
2. The floor cleaning apparatus of claim 1, wherein said canister assembly is pivotally connected to said nozzle assembly.
3. The floor cleaning apparatus of claim 1, wherein said dirt collection vessel is a filter bag.
4. The floor cleaning apparatus of claim 1, wherein said dirt collection vessel is a dirt cup.
5. The floor cleaning apparatus of claim 1, wherein said dirt collection vessel is a cyclonic airflow chamber.
6. The floor cleaning apparatus of claim 1, wherein said floor cleaning apparatus is a device selected from a group consisting of an upright vacuum cleaner, a canister vacuum cleaner, a hand-held vacuum cleaner and an extractor.
7. A floor cleaning apparatus, comprising:
a nozzle assembly;
a canister assembly;
a suction generator carried on one of said nozzle assembly and said canister assembly;
a dirt collection vessel carried on one of said canister assembly and said nozzle assembly;
a first agitator carried on said nozzle assembly;
a first agitator drive motor connected to said first agitator;
a second agitator carried on said nozzle assembly; and a second agitator drive motor connected to said second agitator.
a nozzle assembly;
a canister assembly;
a suction generator carried on one of said nozzle assembly and said canister assembly;
a dirt collection vessel carried on one of said canister assembly and said nozzle assembly;
a first agitator carried on said nozzle assembly;
a first agitator drive motor connected to said first agitator;
a second agitator carried on said nozzle assembly; and a second agitator drive motor connected to said second agitator.
8. A method of providing an improved floor cleaning apparatus, comprising:
equipping said floor cleaning apparatus with a first agitator and a second agitator; and independently driving said first and second agitators.
equipping said floor cleaning apparatus with a first agitator and a second agitator; and independently driving said first and second agitators.
9. The method of claim 8 including driving said first and second agitators at different speeds.
10. The method of claim 9, including driving said first and second agitators in different directions.
11. The method of claim 8 including driving said first and second agitators in different directions.
12. The method of claim 8 including providing said first agitator with a first internal drive motor and said second agitator with a second internal drive motor.
13. The method of claim 12 including driving said first and second agitators at different speeds.
14. The method of claim 13, including driving said first and second agitators in different directions.
15. The method of claim 12 including driving said first and second agitators in different directions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53946704P | 2004-01-27 | 2004-01-27 | |
| US60/539,467 | 2004-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2495150A1 true CA2495150A1 (en) | 2005-07-27 |
Family
ID=34826086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002495150A Abandoned CA2495150A1 (en) | 2004-01-27 | 2005-01-27 | Vacuum cleaner with twin independently driven agitators |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20050160555A1 (en) |
| CA (1) | CA2495150A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7803207B2 (en) * | 2006-03-10 | 2010-09-28 | G.B.D. Corp. | Vacuum cleaner with a divider |
| US8656544B1 (en) * | 2011-07-13 | 2014-02-25 | Kenneth Anderson | Sweeper with sweeping elements |
| GB2498351B (en) | 2012-01-10 | 2014-06-18 | Dyson Technology Ltd | A cleaner head for a vacuum cleaner |
| GB2499213B (en) | 2012-02-08 | 2016-10-19 | Dyson Technology Ltd | A cleaner-head for a vacuum cleaner |
| GB2499214B (en) * | 2012-02-08 | 2014-03-26 | Dyson Technology Ltd | A cleaner-head for a vacuum cleaner |
| CA2868616C (en) | 2012-03-27 | 2020-03-31 | Tiger Tool International Incorporated | Vacuum hose storage system |
| US9049971B2 (en) | 2013-03-15 | 2015-06-09 | Tiger Tool International Incorporated | Vacuum cleaning systems and methods with integral vacuum assisted hose storage system |
| GB2526512B (en) | 2014-03-19 | 2017-07-26 | Dyson Technology Ltd | Cleaning appliance |
| GB2524285B (en) | 2014-03-19 | 2016-12-07 | Dyson Technology Ltd | Cleaner head |
| EP3128890B1 (en) * | 2014-04-07 | 2019-09-11 | Tiger Tool International Incorporated | Power head for vacuum systems |
| GB2549147B (en) * | 2016-04-08 | 2018-09-19 | Dyson Technology Ltd | A cleaner head for a vacuum cleaner |
| CN111281267A (en) * | 2018-12-07 | 2020-06-16 | 添可智能科技有限公司 | Scrubbing brush and cleaning device |
| CN213248830U (en) | 2019-03-14 | 2021-05-25 | 尚科宁家运营有限公司 | Vacuum cleaner system |
| GB2622028A (en) * | 2022-08-31 | 2024-03-06 | Dyson Technology Ltd | Drive system for a floor cleaner |
| GB2622024A (en) * | 2022-08-31 | 2024-03-06 | Dyson Technology Ltd | Drive system for a floor cleaner |
| GB2622026A (en) * | 2022-08-31 | 2024-03-06 | Dyson Technology Ltd | Air intake for a drive system |
Family Cites Families (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1900889A (en) * | 1931-02-06 | 1933-03-07 | Hoover Co | Suction cleaner |
| US2421235A (en) * | 1944-02-10 | 1947-05-27 | Elmer A Basinger | Direct drive vacuum cleaner agitator roller |
| US2941232A (en) * | 1959-01-19 | 1960-06-21 | Willis S Clayton Jr | Venetian blind cleaner |
| US3387319A (en) * | 1965-06-28 | 1968-06-11 | Electrolux Corp | Airflow-electric coupling for vacuum cleaner |
| US3624861A (en) * | 1969-10-10 | 1971-12-07 | Studebaker Corp | Rug scrubber |
| US3815170A (en) * | 1972-06-30 | 1974-06-11 | Nat Union Electric Corp | Cleaning nozzle attachment for a suction cleaner |
| US4052767A (en) * | 1975-11-07 | 1977-10-11 | Whirlpool Corporation | Power driven brush drive control |
| US4384386A (en) * | 1978-09-22 | 1983-05-24 | The Scott & Fetzer Company | Motor for rotating brush |
| US4357730A (en) * | 1979-03-13 | 1982-11-09 | Franz Lex | Portable cleaning apparatus |
| US4225999A (en) * | 1979-04-20 | 1980-10-07 | Health-Mor Inc. | Multi-motor suction cleaner construction |
| AT364485B (en) * | 1980-06-10 | 1981-10-27 | Franz Lex | HAND BRUSH SUCTION UNIT |
| DE3045895A1 (en) * | 1980-12-05 | 1982-07-08 | Vorwerk & Co Interholding Gmbh, 5600 Wuppertal | GEARBOX FOR CLEANING EQUIPMENT |
| US4426751A (en) * | 1982-01-21 | 1984-01-24 | Whirlpool Corporation | Vacuum cleaner nozzle with double brush |
| DE3318604C1 (en) * | 1983-05-21 | 1984-11-29 | Stein & Co GmbH, 5620 Velbert | Protection device for floor care devices |
| US4542556A (en) * | 1984-02-06 | 1985-09-24 | Hightec Manufacturing Corporation | Carpet vacuum, cleaning, and dyeing apparatus |
| US4654927A (en) * | 1984-12-05 | 1987-04-07 | Novinger Harry E | Side sweeping brushing vacuum machine |
| US4733432A (en) * | 1986-10-17 | 1988-03-29 | Boris Novoselsky | Power brush, e.g. for vacuum cleaning apparatus |
| DK172087A (en) * | 1987-04-03 | 1988-10-04 | Rotowash Scandinavia | APPLIANCES FOR WATER CLEANING OF FLOOR OR WALL SURFACES |
| US5018240A (en) * | 1990-04-27 | 1991-05-28 | Cimex Limited | Carpet cleaner |
| US5056186A (en) * | 1990-10-02 | 1991-10-15 | Jiam Fa Weng | Cleaner |
| US5287591A (en) * | 1992-03-30 | 1994-02-22 | Racine Industries, Inc. | Carpet cleaning machine with convertible-use feature |
| CA2174050C (en) * | 1995-04-21 | 2001-07-17 | Sadahiro Shimada | Electric vacuum cleaner |
| US5611106A (en) * | 1996-01-19 | 1997-03-18 | Castex Incorporated | Carpet maintainer |
| WO1997049324A2 (en) * | 1996-06-26 | 1997-12-31 | Matsushita Home Appliance Corporation Of America | Extractor with twin, counterrotating agitators |
| US5784754A (en) * | 1997-06-13 | 1998-07-28 | Professional Chemicals Corporation | Surface cleaning appliance |
| KR100384980B1 (en) * | 1998-04-03 | 2003-06-02 | 마츠시타 덴끼 산교 가부시키가이샤 | Rotational brush device and electric instrument using same |
| US6351872B1 (en) * | 1999-07-16 | 2002-03-05 | Matsushita Electric Corporation Of America | Agitator motor projection system for vacuum cleaner |
| US7159277B2 (en) * | 2001-02-06 | 2007-01-09 | The Hoover Company | Multiple chamber suction nozzle configuration |
| US6772475B2 (en) * | 2001-02-06 | 2004-08-10 | The Hoover Company | Suction nozzle configuration |
| US7243393B2 (en) * | 2001-02-06 | 2007-07-17 | The Hoover Company | Agitator drive configuration |
| US7143469B2 (en) * | 2001-02-06 | 2006-12-05 | The Hoover Company | Dirt collecting system |
| DE10296627T5 (en) * | 2001-04-06 | 2004-04-22 | Matsushita Electric Corp. Of America | Movement mechanism drive system with switchover for smooth floor |
| KR100414086B1 (en) * | 2001-06-09 | 2004-01-07 | 엘지전자 주식회사 | Suction head of vacuum cleaner with power brush |
| US20040000023A1 (en) * | 2002-03-08 | 2004-01-01 | Hitzelberger J. Erik | Vacuum cleaner with reversible rotary agitator |
| US6848147B2 (en) * | 2002-04-08 | 2005-02-01 | Royal Appliance Mfg. Co. | Internally driven agitator |
| US7251858B2 (en) * | 2004-01-23 | 2007-08-07 | Panasonic Corporation Of North America | Floor care apparatus with multiple agitator speeds and constant suction power |
-
2005
- 2005-01-27 CA CA002495150A patent/CA2495150A1/en not_active Abandoned
- 2005-01-27 US US11/044,142 patent/US20050160555A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20050160555A1 (en) | 2005-07-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |