USO09545181 B2
`
`(12) United States Patent
`Conrad
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 9,545,181 B2
`Jan. 17, 2017
`
`(54) SURFACE CLEANING APPARATUS
`(71) Applicant: Omachron Intellectual Property Inc.,
`Hampton (CA)
`
`(72) Inventor: Wayne Ernest Conrad, Hampton (CA)
`(73) Assignee: Omachron Intellectual Property Inc.,
`Hampton, Ontario (CA)
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 0 days.
`(21) Appl. No.: 14/875,381
`
`(*) Notice:
`
`(22) Filed:
`
`Oct. 5, 2015
`
`(65)
`
`Prior Publication Data
`US 2016/0066755A1
`Mar. 10, 2016
`Related U.S. Application Data
`(60) Continuation of application No. 13/782,217, filed on
`Mar. 1, 2013, now Pat. No. 9,192,269, which is a
`continuation-in-part of application No. 13/720,754,
`filed on Dec. 19, 2012, now Pat. No. 8,752,239,
`which is a division of application No. 11/954,331,
`filed on Dec. 12, 2007, now Pat. No. 8,359,705.
`(60) Provisional application No. 60/870,175, filed on Dec.
`15, 2006, provisional application No. 60/884,767,
`filed on Jan. 12, 2007.
`
`(51) Eboo
`A47L 9/16
`A47L 5/22
`A47L 9/32
`A47L 5/24
`A47L 5/36
`A47L 9/28
`(52) U.S. Cl.
`CPC .............. A47L 9/1641 (2013.01); A47L 5/225
`(2013.01); A47L 5/24 (2013.01); A47L 5/36
`
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.015
`(2006.01)
`
`
`
`(2013.01); A47L 9/009 (2013.01); A47L 9/16
`(2013.01); A47L 9/1683 (2013.01); A47L
`9/2868 (2013.01); A47L 9/2884 (2013.01);
`A47L 9/322 (2013.01)
`(58) Field of Classification Search
`15/329, 353. 410
`USPC
`See application file for complete search history.
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
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`2f1933 Alexander
`(Continued)
`
`FOREIGN PATENT DOCUMENTS
`112778
`4f1940
`"..."
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`AU
`CA
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`OTHER PUBLICATIONS
`
`International Preliminary Report on Patentability, dated Sep. 16.
`2008 for International application No. PCT/CA2007/000380.
`(Continued)
`
`Primary Examiner — Joseph J. Hail
`Assistant Examiner — Shantese McDonald
`(74) Attorney, Agent, or Firm — Philip C. Mendes da
`Costa; Bereskin & Parr LLP/S.E.N.C.R.L., S.r.l.
`
`ABSTRACT
`(57)
`A portable Surface cleaning annaratus is removablv mounted
`p
`g app
`y
`from a wheeled base. The portable Surface cleaning appa
`ratus is provided with an energ V storage member and a
`Suction RtOr
`gy
`9.
`
`27 Claims, 18 Drawing Sheets
`
`Dyson Ex1019
`Page 1
`
`

`

`US 9,545,181 B2
`Page 2
`
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`11/953,292.
`United States Office Action, dated Jul. 22, 2010, for U.S. Appl. No.
`11/953,292.
`Euro-Pro Shark Cordless Hand Vac Owner's Manual, published in
`2002.
`International Search Report and Written Opinion received in con
`nection to international patent application No. PCT/CA2014/
`000133, mailed on May 26, 2014.
`Office Action, issued in U.S. Appl. No. 12/720,901, dated Jun. 10,
`2011.
`Office Action, issued in U.S. Appl. No. 12/720,901, dated Nov. 26.
`2010.
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`* cited by examiner
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`1.
`SURFACE CLEANING APPARATUS
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`US 9,545,181 B2
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`2
`when the portable cleaning unit is provided on the wheeled
`base and the wheeled base is connected to a source of
`current, the suction motor in the wheeled base may be
`operated, e.g. on AC current, and used to draw air through
`an airflow path to the air treatment member in the portable
`cleaning unit. An advantage of this design is that the Suction
`motor provided in the wheeled base may produce a higher
`airflow and therefore increase cleanability when the portable
`cleaning unit is provided on the wheeled base. However,
`when the portable cleaning unit is removed from the
`wheeled base, a smaller and lighter Suction motor is utilized.
`While the velocity of the airflow through the portable
`cleaning unit when removed from the base may be
`decreased, the reduced weight of the Suction motor may be
`beneficial. In addition, a smaller airflow path may be pro
`vided when the portable cleaning unit is removed from the
`base, and, accordingly, a smaller DC power Suction motor
`may provide substantially similar airflow in the hand carri
`able mode.
`The portable cleaning unit may comprise at least one
`cyclonic separation stage and a Suction motor. Accordingly,
`the portable cleaning unit is usable, e.g., as a vacuum cleaner
`or the like, when removed from the wheeled base. The
`cyclonic separation stage comprises a cyclone chamber and
`a material collection chamber. The portable cleaning unit is
`configured Such that the material collection chamber is
`removable for emptying when the portable cleaning unit is
`mounted on the wheeled base. For example, the material
`collection chamber may be removed by itself when the
`portable cleaning unit is mounted on the wheel base. Alter
`nately, the material collection chamber and the cyclone
`chamber may be removable as a unit (e.g. a cyclone bin
`assembly). It will be appreciated that the material collection
`chamber, either by itself or in conjunction with the cyclone
`chamber and possibly other elements, may be removable
`from the portable cleaning unit when the portable cleaning
`unit has been removed from the wheeled base. An advantage
`of this design is that the usability of the Surface cleaning
`apparatus is increased. In particular, when it is needed to
`empty the dirt collection chamber, all that is needed is to
`remove the dirt collection chamber either by itself, or, for
`example, together with the cyclone chamber for emptying.
`Accordingly, a user did not carry the weight of the motor
`when the user is emptying the dirt collection chamber.
`Preferably, in accordance with this embodiment, the dirt
`collection chamber and, optionally, the cyclone chamber
`may be provided on an upper portion of the portable
`cleaning unit so as to be removable upwardly therefrom.
`It will be appreciated by a skilled person in the art that any
`of the features of the configuration of a portable cleaning
`unit to permit a dirt collection chamber to be removed from
`the portable cleaning unit when the portable cleaning unit is
`mounted on the wheeled base as discussed herein may not be
`utilized with dual motor design disclosed herein, but may be
`used by itself or in combination with any other feature
`disclosed herein.
`In accordance with another embodiment, the portable
`cleaning unit may be provided with a pod hose which is
`removable with the portable cleaning unit from the wheeled
`base. The pod hose may have a smaller diameter and,
`accordingly, may be used only when the portable cleaning
`unit has been removed from the wheeled base. Accordingly,
`when the portable cleaning unit is on a wheeled base, the pod
`hose does not form part of the fluid flow path. Accordingly,
`the smaller diameter of the pod hose does not restrict the
`airflow path when the portable cleaning unit is placed on a
`wheeled base. An advantage of this design is that the
`
`CROSS-REFERENCE TO RELATED
`APPLICATIONS
`
`This application is a continuation of co-pending U.S.
`patent application Ser. No. 13/782.217, filed on Mar. 1,
`2013, which itself is a continuation in part of co-pending
`U.S. patent application Ser. No. 13/720,754, filed on Dec.
`19, 2012, which itself is a divisional application of U.S. Pat.
`No. 8,359,705, which issued on Jan. 29, 2013, which itself
`claims priority from U.S. Provisional Patent application
`60/870,175 (filed on Dec. 15, 2006), and 60/884,767 (filed
`on Jan. 12, 2007), each of which are incorporated herein by
`reference in their entirety.
`
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`
`FIELD
`
`This specification relates to a surface cleaning apparatus
`comprising a base with a removable portable surface clean
`ing unit such as a pod or other hand carriable Surface
`cleaning apparatus wherein the portable Surface cleaning
`apparatus is usable when mounted on the base or when
`removed therefrom.
`
`INTRODUCTION
`
`The following is not an admission that anything discussed
`below is part of the prior art or part of the common general
`knowledge of a person skilled in the art.
`Various types of Surface cleaning apparatuses are known
`in the art. Such surface cleaning apparatuses include vacuum
`cleaners, including upright vacuum cleaners, hand carriable
`vacuum cleaners, canister type vacuum cleaners, and Shop
`VacTM type vacuum cleaners. Some such vacuum cleaners
`are provided with wheels. For example, typical upright
`vacuum cleaners are provided with a surface cleaning head
`that includes wheels mounted to a bottom surface thereof.
`Upright vacuum cleaners are easy for a consumer to use
`since the consumer does not have to carry the vacuum
`cleaner but merely push it over a surface. However, depend
`ing on the size of the Surface cleaning head, an upright
`vacuum cleaner may not be usable in Smaller or crowded
`areas. Canister vacuum cleaners have a flexibly hose extend
`ing between a surface cleaning head and the canister body,
`thereby improving mobility of the cleaning head. However,
`consumers must separately move a canister body, which can
`add an extra step during the cleaning process.
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`SUMMARY
`
`This summary is intended to introduce the reader to the
`more detailed description that follows and not to limit or
`define any claimed or as yet unclaimed invention. One or
`more inventions may reside in any combination or Sub
`combination of the elements or process steps disclosed in
`any part of this document including its claims and figures.
`According to one broad aspect of this invention, a surface
`cleaning apparatus comprises a portable cleaning unit,
`which may be carried by hand or a shoulder strap Such as a
`pod, which is removably mounted on a wheeled base. The
`portable cleaning unit may be provided with a Suction motor
`and an energy storage member (Such as batteries). Accord
`ingly, the Suction motor of the portable cleaning unit may be
`operable on DC current. However, in accordance with this
`embodiment, the wheeled base may include a second Suction
`motor (e.g. an AC powered Suction motor). Accordingly,
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`portable cleaning unit may carry a longer hose without
`increasing the Volume taken by the pod hose. In addition, the
`pod hose, being a smaller diameter, may be more flexible
`and enhance the usability of the portable cleaning unit in a
`hand carriable mode. For example, the pod hose may have
`a greater stretch ratio, for example, of 4:1 to 7:1 or more.
`In accordance with this embodiment, a valve may be
`provided on the portable cleaning unit whereby the pod hose
`is not in airflow communication with the Suction motor
`when the portable cleaning unit is mounted on the wheeled
`base. However, when the portable cleaning unit is removed
`from the wheeled base, the valve may be actuated (e.g.
`automatically upon removal of the portable cleaning unit
`from the wheeled base, manually by the user or automati
`cally when the hose is deployed for use) such that pod hose
`form part of the air flow path.
`It will be appreciated by a person skilled in the art that any
`of the features of the pod hose which are discussed herein
`may not be utilized with the dual motor design disclosed
`herein, but may be used by itself or in combination with any
`other feature disclosed herein.
`In accordance with another embodiment, the portable
`cleaning unit may be operable by AC power Supplied to the
`base when the portable cleaning unit is mounted on the base
`and may be operable on DC power when the portable
`cleaning unit is removed from the base. Accordingly, the
`portable cleaning unit may include an energy storage mem
`ber (e.g. one or more batteries) which may power the Suction
`motor when the portable cleaning unit is removed from the
`base. Accordingly, the Suction motor may be operable on DC
`30
`current. When the pod is mounted on the wheeled base, and
`the wheeled base is connected to a source of current by an
`electrical cord, then the suction motor may be in electrical
`communication with the base so as to be powered by AC
`current Supplied through the electrical cord. For example,
`35
`the Suction motor could have dual winding so as to be
`operable on both AC and DC current. Alternately, the base
`may include a power supply to convert the AC current to DC
`current which is then supplied to the suction motor when the
`portable cleaning unit is placed on the base. For example, the
`power Supply may comprise an inverter.
`In this particular embodiment, it will be appreciated that
`the batteries in the portable cleaning unit may be charged
`while the portable cleaning unit is mounted on the wheeled
`base and the wheeled base is plugged into an electrical
`outlet.
`In a further alternate embodiment, instead of utilizing
`electricity from an electrical outlet, the wheeled base may
`include a fuel cell or an alcohol powered internal or external
`combustion engine. In such an embodiment, the wheeled
`base may produce AC current or DC current, which is then
`Supplied to the Suction motor when the portable cleaning
`unit is mounted on the wheeled base and actuated.
`It will be appreciated by a person skilled in the art that any
`of the features of a portable cleaning unit which is operable
`on AC and DC current as disclosed herein may not be
`utilized with the dual motor design disclosed herein, but may
`be used by itself or in combination with any other feature
`disclosed herein.
`In accordance with the further embodiment, the portable
`cleaning unit may comprise both an energy storage member
`and a power Supply. Accordingly, when the portable clean
`ing unit is connected to a power source (e.g. a cord extends
`from the portable cleaning unit to an electrical outlet), AC
`power may be supplied to the power Supply (e.g. an inverter)
`65
`to convert the AC current to DC which is then utilized to
`power the suction motor. When a user is unable to or does
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`not want to plug the portable cleaning unit into a wall outlet,
`the portable cleaning unit may be powered by the energy
`storage member (e.g. batteries), which provide DC current to
`a Suction motor. Accordingly, the portable cleaning unit may
`be powered by both AC current from a wall outlet and DC
`current supplied by batteries as may be desired. In a further
`alternate embodiment, the Suction motor may be provided
`with two windings. In Such a case, the power Supply is not
`required and the suction motor may be powered by both DC
`current from the batteries and AC current from a wall outlet.
`It will be appreciated by a person skilled in the art that any
`of the features of a pod operable with both AC and DC
`current as discussed herein may not be utilized with dual
`motor design disclosed herein, but may be used by itself or
`in combination with any other feature disclosed herein.
`In one embodiment, there is provided a surface cleaning
`apparatus comprising
`(a) a wheeled base comprising an AC Suction motor,
`(b) a portable cleaning unit removably mounted on the
`wheeled base and comprising at least one cyclonic separa
`tion stage, a first energy storage member and a portable
`cleaning unit Suction motor that is operable on DC power;
`and,
`(c) a fluid flow path extending from a first dirty fluid inlet
`to a clean air outlet of the Surface cleaning apparatus,
`wherein the AC suction motor provides motive power to
`move fluid through the fluid flow path when the surface
`cleaning unit is Switched on and when the portable cleaning
`unit is mounted on the wheeled base, and
`wherein the portable cleaning unit Suction motor provides
`motive power to move fluid through the fluid flow path when
`the portable cleaning unit is Switched on and when the
`portable cleaning unit is removed from the wheeled base
`In some embodiments, the wheeled base may further
`comprise or is connectable to a power cord and the portable
`cleaning unit is powered solely by the first energy storage
`member when the portable cleaning unit is removed from
`the wheeled base.
`In some embodiments, the wheeled base may further
`comprise or is connectable to a power cord, the first energy
`storage member comprises batteries and the batteries are
`charged when the portable cleaning unit is mounted on the
`wheeled base.
`In some embodiments, the Suction motor in the portable
`cleaning unit may not be used to provide motive power to
`move fluid through the fluid flow path when the surface
`cleaning unit is Switched on and when the portable cleaning
`unit is mounted on the wheeled base.
`In some embodiments, the fluid flow path may comprise
`an upstream portion that extends from the first dirty fluid
`inlet to the portable cleaning unit and the AC Suction motor
`is in the fluid flow path.
`In some embodiments, the fluid flow path may comprise
`a downstream fluid flow path extending through the portable
`cleaning unit to the clean air outlet and the portable cleaning
`unit suction motor is in the downstream fluid flow path.
`In some embodiments, the portable cleaning unit may
`comprise a flexible hose having a second dirty fluid inlet arid
`the flexible hose is part of the downstream fluid flow path
`when the portable cleaning unit is removed from the
`wheeled base.
`In some embodiments, the flexible hose may be an
`electrified flexible hose.
`In some embodiments, the wheeled base may further
`comprise a second energy storage member.
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`5
`In some embodiments, the second energy storage member
`may charge the first energy storage member when the
`portable cleaning unit is mounted on the wheeled base.
`In some embodiments, the portable cleaning unit Suction
`motor may be a DC motor.
`In one embodiment, there is provided a Surface cleaning
`apparatus comprising
`(a) a wheeled based connectable to a source of current;
`(b) a portable cleaning unit removably mounted on the
`wheeled base and comprising at least one cyclonic separa
`tion stage, a first energy storage member and a portable
`cleaning unit Suction motor that is operable on DC power;
`a