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1. 发明授权

US07748079B2 Cyclone separator with fine particle separation member 有权
标题翻译：旋风分离器与细粒分离器
公开(公告)号：US07748079B2
公开(公告)日：2010-07-06
申请号：US11162164
申请日：2005-08-31
申请人： David E. McDowell , George Moyher, Jr. , Charles A. Reed, Jr. , Timothy S. Parker
发明人： David E. McDowell , George Moyher, Jr. , Charles A. Reed, Jr. , Timothy S. Parker
IPC分类号： A47L9/16
CPC分类号： B04C9/00 , A47L5/362 , A47L9/1608 , A47L9/1666 , A47L9/1683 , B01D45/16 , B01D50/002 , B04C5/187 , B04C2009/004
摘要： A cyclone separator assembly comprises a cyclone separator that removes large particles of dirt from a working airstream as it flows through the cyclone separator, and the separated large particles of dirt are deposited into a dirt cup. The cyclone separator assembly further includes a fine particle separation member comprising a plurality of apertures for separating fine particles of dirt from air in the cyclone separator or the dirt cup.
摘要翻译：旋风分离器组件包括旋风分离器，其在工作气流流过旋风分离器时从工作气流中除去大量污垢，并将分离的大颗粒污垢沉积到污垢杯中。旋风分离器组件还包括细颗粒分离构件，其包括多个孔，用于在旋风分离器或污垢杯中分离灰尘和空气的细小颗粒。

2. 发明授权

US07013528B2 Floor cleaner with dusting 有权
标题翻译：地板清洁剂与除尘
公开(公告)号：US07013528B2
公开(公告)日：2006-03-21
申请号：US10248101
申请日：2002-12-18
申请人： Timothy S. Parker , David L. Haan , David E. McDowell
发明人： Timothy S. Parker , David L. Haan , David E. McDowell
IPC分类号： A47L9/06
CPC分类号： A47L11/4075 , A47L5/28 , A47L5/30 , A47L9/06 , A47L9/0686 , A47L11/33 , A47L11/4005 , A47L11/4013 , A47L11/4036 , A47L11/4041 , A47L11/4055 , A47L11/4069
摘要： A battery-powered, upright vacuum sweeper comprises a base assembly and a handle pivotably attached thereto. The base assembly comprises a vacuum fan assembly fluidly communicating with an inlet for vacuuming dust and the debris particles from a surface into a removable reservoir. A rotating roller brush attached to the base assembly sweeps the particles into the inlet. A dust pad assembly comprises a disposable dust cloth extending over a portion of the base assembly in contact with the surface to be cleaned for removing dust particles which are not removed by vacuuming.
摘要翻译：电池供电的立式真空清扫机包括基座组件和可枢转地连接到其上的手柄。基座组件包括与入口流体连通的真空风扇组件，用于将灰尘和碎屑颗粒从表面抽吸到可移除的储存器中。附接到基座组件的旋转辊刷将颗粒扫入入口。防尘垫组件包括一个一次性的布尘布，该基底组件的一部分与要清洁的表面相接触，以除去未通过真空除去的灰尘颗粒。

3. 发明授权

US07062816B2 Surface cleaner with power drive 有权
标题翻译：表面清洁器带动力传动
公开(公告)号：US07062816B2
公开(公告)日：2006-06-20
申请号：US10064723
申请日：2002-08-09
申请人： Gary A. Kasper , Allen W. Scott , Phong Hoang Tran , David E. McDowell , Gary L. Smith
发明人： Gary A. Kasper , Allen W. Scott , Phong Hoang Tran , David E. McDowell , Gary L. Smith
IPC分类号： A47L5/00
CPC分类号： A47L11/4075 , A47L11/30 , A47L11/34 , A47L11/4088 , F16H1/16 , F16H3/14 , F16H15/10 , F16H2007/0874
摘要： A portable surface cleaning apparatus comprises a fluid dispensing system including at least one fluid supply tank, a dispensing nozzle connected to the fluid supply tank through a fluid supply conduit for applying a cleaning fluid to a surface to be cleaned, a fluid recovery tank for holding recovered fluid, a suction nozzle, a working air conduit extending between the recovery tank and the suction nozzle, a vacuum source in fluid communication with the recovery tank for generating a flow of working air from the suction nozzle through the working air conduit and to the recovery tank to thereby recover fluid from the surface to be cleaned through the suction nozzle and working air conduit and into the recovery tank, and a power drive mechanism for selectively propelling the portable cleaning apparatus over the surface to be cleaned
摘要翻译：便携式表面清洁装置包括流体分配系统，该流体分配系统包括至少一个流体供应罐，通过用于将清洁流体施加到待清洁表面的流体供应管道连接到流体供应罐的分配喷嘴，用于保持回收流体，吸嘴，在回收罐和吸嘴之间延伸的工作空气导管，与回收罐流体连通的真空源，用于产生从吸嘴通过工作空气管道的工作空气流，回收罐，从而通过吸嘴和工作空气管道从待清洁的表面回收流体并进入回收罐;以及动力驱动机构，用于在待清洁的表面上有选择地推动便携式清洁设备

4. 发明授权

US5189755A Wet vacuum/extractor and cleaning solution tank therefor 失效
标题翻译：湿式真空/提取器和清洗溶液罐
公开(公告)号：US5189755A
公开(公告)日：1993-03-02
申请号：US866893
申请日：1992-04-03
申请人： Robert A. Yonkers , David E. McDowell
发明人： Robert A. Yonkers , David E. McDowell
IPC分类号： A47L7/04 , A47L11/34
CPC分类号： A47L11/34 , A47L11/4083
摘要： The specification discloses a wet vacuum/extractor including an add-on liquid dispensing system. A liquid supply tank removably mounts on the vacuum and couples with the vacuum exhaust for momentarily pressurizing the tank to prime the liquid dispensing system. A remote pump is included at the wand handle and is powered by low voltage current from the vacuum.
摘要翻译：该说明书公开了一种包括附加液体分配系统的湿式真空/提取器。液体供应罐可拆卸地安装在真空上并与真空排气耦合，以便立即对罐加压以灌注液体分配系统。手柄中包含一个远程泵，并由真空中的低压电流供电。

5. 发明授权

US4766638A Four-way vacuum cleaner 失效
标题翻译：四通吸尘器
公开(公告)号：US4766638A
公开(公告)日：1988-08-30
申请号：US21635
申请日：1987-03-04
申请人： David E. McDowell
发明人： David E. McDowell
IPC分类号： A47L5/24 , A47L9/00
CPC分类号： A47L9/00 , A47L5/24
摘要： A multi-use vacuum cleaner has a central body which houses a motor, air impeller, battery and a dirt collection chamber. One end of the central body has a face inclined to the longitudinal axis of the central body with a rectangular inlet orifice into which the coupling nozzle of a floor and carpet pickup head can be frictionally inserted. The other end of the body has an integral, axially protruding extension providing a primary handle for manipulating the body as a hand held cushion and upholstery cleaner. The primary handle has means for detachably mounting an extension handle permitting the unit to be used as a standard upright vacuum cleaner or for vacuuming overhead and other areas which would be otherwise inaccessible.
摘要翻译：多用途吸尘器具有容纳电动机，空气叶轮，电池和污物收集室的中心体。中心体的一端具有与中心体的纵向轴线倾斜的面，其具有矩形入口孔，地板和地毯拾取头的联接喷嘴可以摩擦地插入该入口孔中。本体的另一端具有一体的，轴向突出的延伸部，提供用于操纵身体的主手柄作为手持垫子和室内装饰清洁器。主手柄具有用于可拆卸地安装延长手柄的装置，其允许该单元用作标准直立式真空吸尘器，或用于抽真空其他不能接近的顶部和其他区域。

6. 发明授权

US4357727A Dual brush floor sweeper 失效
标题翻译：双刷地板清扫车
公开(公告)号：US4357727A
公开(公告)日：1982-11-09
申请号：US212866
申请日：1980-12-04
申请人： David E. McDowell
发明人： David E. McDowell
IPC分类号： A47L11/22 , A47L11/24 , A47L11/32 , A47L11/33
CPC分类号： A47L11/4069 , A47L11/33 , A47L11/4013 , A47L11/4041
摘要： A floor sweeper has a pair of brush rollers, each sweeping into its own dust pan. Each brush roller has different debris pickup characteristics, with one brush roller tending to be more efficient in picking up large debris and the other roller tending to be more efficient in picking up smaller debris. The illustrated embodiment discloses a front brush roller of the off-center tufted type which rotates continuously toward its respective pan during reciprocal sweeper translation, with a relatively high free-wheeling rotation in one direction of sweeper translation. The rear brush roller is of the wire twist type and also rotates continuously toward its pan during reciprocal sweeper translation, but with relatively low rolling rotation in one direction of sweeper movement.
摘要翻译：地板清扫机有一对刷辊，每个刷子都扫入自己的防尘盘。每个刷辊具有不同的碎片拾取特性，一个刷辊倾向于在拾取大的碎屑时更有效，而另一个辊倾向于更有效地拾取较小的碎屑。所示实施例公开了一种偏心簇绒型的前刷辊，其在往复扫掠器平移过程中连续向其各自的平底盘旋转，在扫掠器平移的一个方向上具有相对较高的自由旋转。后刷辊是线扭转型的，并且在往复式清扫机平移期间连续地朝向其盘旋转，但是在清扫机移动的一个方向上具有相对较低的滚动旋转。

7. 发明授权

US07188388B2 Vacuum cleaner with detachable cyclonic vacuum module 有权
标题翻译：具有可拆卸气旋真空模块的吸尘器
公开(公告)号：US07188388B2
公开(公告)日：2007-03-13
申请号：US10604401
申请日：2003-07-17
申请人： Michael F. Best , Douglas J. Medema , David E. McDowell
发明人： Michael F. Best , Douglas J. Medema , David E. McDowell
IPC分类号： A47L9/16
CPC分类号： A47L9/165 , A47L5/225 , A47L5/24 , A47L5/28 , A47L9/1666 , A47L9/1683 , A47L9/1691 , B01D45/16 , Y10S55/03
摘要： A multi-use vacuum cleaner capable of use as an upright vacuum or as a detachable vacuum module further comprising a cyclonic dirt separator has a detachable vacuum module selectively mounted to the base and support member of an upright vacuum cleaner. The vacuum module includes the vacuum motor, motor driven fan, cyclonic dirt separator and hose. The vacuum cleaner may be operated as an upright vacuum, or alternatively, the module can be separated from the base assembly and may be used independently of and at a great distance from the base assembly for a wide variety of cleaning purposes.
摘要翻译：能够用作直立真空的多用途真空吸尘器或进一步包括旋风式污垢分离器的可拆卸真空模块具有可拆卸的真空模块，其选择性地安装到直立式真空吸尘器的底座和支撑构件上。真空模块包括真空马达，马达驱动风扇，气旋污垢分离器和软管。真空吸尘器可以作为直立式真空操作，或者可替代地，模块可以与基座组件分离，并且可以独立于基座组件并且与基座组件相距很远的距离使用，用于各种清洁目的。

8. 发明授权

US4910828A Cleaning apparatus 失效
标题翻译：清洁装置
公开(公告)号：US4910828A
公开(公告)日：1990-03-27
申请号：US214013
申请日：1988-06-30
申请人： Michael R. Blase , Henry J. Rosendall , Daniel L. Koltak , David E. McDowell
发明人： Michael R. Blase , Henry J. Rosendall , Daniel L. Koltak , David E. McDowell
IPC分类号： A47L11/34
CPC分类号： A47L11/4016 , A47L11/34 , A47L11/4083
摘要： A cleaning apparatus which is of a compact construction to facilitate easy manipulation and portability includes a housing enclosing a fluid pump and a vacuum fan and mounting upon opposite sides a recovery tank and a stowage panel. The stowage panel is adapted to stow the flexible wand having a nozzle when not in use. Also, the high voltage motor driving the vacuum pump is adapted to also act as half of a transformer in order to pick off the lower voltage needed for the low voltage motor driving the fluid pump.
摘要翻译：具有紧凑结构以便于操作和便携性的清洁装置包括封闭流体泵和真空风扇的壳体，并且在相对侧上安装有回收罐和收纳板。该装载板适于在不使用时收纳具有喷嘴的柔性棒。此外，驱动真空泵的高压电动机也适用于变压器的一半，以便去除驱动液体泵的低压电动机所需的较低电压。

9. 发明授权

US4042997A Vacuum cleaner with improved brush 失效
标题翻译：具有改进的刷子的真空清洁器
公开(公告)号：US4042997A
公开(公告)日：1977-08-23
申请号：US737153
申请日：1976-10-29
申请人： David E. McDowell , Robert A. Yonkers
发明人： David E. McDowell , Robert A. Yonkers
IPC分类号： A46B9/02 , A47L5/30
CPC分类号： A46B9/02 , A47L5/30
摘要： A vacuum cleaner is provided with a suction nozzle and a cylindrical rotary brush. The brush includes a plurality of generally longitudinally extending rows of uniform bristle tufts. Alternate tufts in alternate rows are spaced at about twice the distance as the remaining more closely spaced tufts and prepare the carpet for sweeping by the latter.PRIOR ART OF INTERESTU.S. Pat. Nos. 1,044,488, Case, 11/19/12; 1,970,355, Bennet, 8/14/34; 2,281,798, Prince, 5/5/42; 2,459,007, Taylor, 1/11/49; 2,659,921, Osborn, 11/24/53; 3,716,889, Goldstein, 2/20/73; 3,815,170, Brooks et al, 6/11/74.BACKGROUND OF THE INVENTIONVacuum cleaners have long been considered one of the most effecient devices for removing debris from carpets and the like. Many modern cleaners, when of the upright type, often comprise a power head portion having a vacuum nozzle, a rotary brush in the nozzle for engaging the carpet, and a brush drive motor; as well as an upright handle or stick pivoted to the head and including a suction motor and a storage chamber for receiving the material removed from the carpet.The rotary brush has usually comprised a cylindrical core having rows of brush bristle tufts. In many prior constructions, the tufts were arranged longitudinally along the core surface in straight or spiral rows, with adjacent tufts being close together and equally spaced.Various attempts have been made over the years to improve the ability of the rotary brush to loosen debris on the surface and deep within the carpet so that the material may be readily sucked through the nozzle into the storage means. For example, in the above-mentioned Prince U.S. Pat. No. 2,281,798, a rigid beater bar is used in conjunction with the brush row. In Taylor U.S. Pat. No. 2,459,007, it is suggested to provide alternate rows of short stiff tufts and long flexible tufts. In Osborn U.S. Pat. No. 2,659,921, it is suggested to use three rows of brush bristle tufts, each of a different stiffness. In Goldstein U.S. Pat. No. 3,716,889 it is suggested to provide alternate "agitator elements" in each row, with alternate rigid and resilient elements.It is readily apparent that all of these "improved" brushes are subject to the disadvantage of increased cost of manufacture, as compared with the aforementioned rotary brush wherein all the rows comprise identical equally spaced tufts of the same length. It is expensive to provide multiple types of tufts or other agitator elements in the same brush and has required special tufting machinery and/or multiple passes through a single machine. Furthermore, rigid agitator elements or beater bars subject the carpet to undesirable wear.SUMMARY OF THE INVENTIONThe present invention solves the aforementioned problems, and is based on the very surprising discovery that complete removal of alternate tufts from alternate tuft rows in a brush wherein the tufts are otherwise all uniform provides a substantially increased cleaning efficiency in a vacuum cleaner of the type indicated. Such a result was wholly unexpected since the normal expectation was the opposite, that is, if bristle tufts were removed from a brush, the brush would not perform as well.While the present inventors' solution to the aforementioned problems may seem simple in retrospect, it nevertheless has created an improved cleaning concept using a low cost brush which subjects the carpet to less wear.

10. 发明授权

US07752705B2 Extraction cleaning with heating 有权
标题翻译：提取清洗加热
公开(公告)号：US07752705B2
公开(公告)日：2010-07-13
申请号：US10710776
申请日：2004-08-02
申请人： David E. McDowell , Eric C. Huffman
发明人： David E. McDowell , Eric C. Huffman
IPC分类号： A47L11/30
CPC分类号： A47L11/4086 , A46B9/026 , A47L5/30 , A47L5/32 , A47L7/0009 , A47L7/0028 , A47L7/0038 , A47L7/0042 , A47L9/0036 , A47L11/34 , A47L11/4008 , A47L11/4016 , A47L11/4041 , A47L11/4044 , A47L11/4075 , A47L11/4083 , A47L11/4088 , F16K31/54 , F22B1/284 , H05B3/00
摘要： A portable extraction surface cleaner apparatus wherein a surface to be cleaned is heated to an elevated temperature and a cleaning fluid is applied to the surface to be cleaned sequentially or simultaneously. The cleaning fluid is removed from the surface by suction from a vacuum source. Power is applied alternatively or simultaneously to a heating element and to the vacuum source for recovering the deposited cleaning fluid.
摘要翻译：一种便携式提取表面清洁装置，其中要清洁的表面被加热到升高的温度，并且清洁流体被顺序地或同时地施加到待清洁的表面上。通过从真空源抽吸将清洁液从表面除去。功率被交替地或同时地施加到加热元件和真空源，用于回收沉积的清洁流体。

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