WO1996019937A1 - Shroud and cyclonic cleaning apparatus incorporating same - Google Patents
Shroud and cyclonic cleaning apparatus incorporating same Download PDFInfo
- Publication number
- WO1996019937A1 WO1996019937A1 PCT/GB1995/003041 GB9503041W WO9619937A1 WO 1996019937 A1 WO1996019937 A1 WO 1996019937A1 GB 9503041 W GB9503041 W GB 9503041W WO 9619937 A1 WO9619937 A1 WO 9619937A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shroud
- lip
- perforated portion
- airflow
- dust
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title description 2
- 239000000428 dust Substances 0.000 claims abstract description 23
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 11
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010407 vacuum cleaning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/10—Vortex chamber constructions with perforated walls
-
- 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
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
- A47L9/1616—Multiple arrangement thereof
- A47L9/1625—Multiple arrangement thereof for series flow
- A47L9/1633—Concentric cyclones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C11/00—Accessories, e.g. safety or control devices, not otherwise provided for, e.g. regulators, valves in inlet or overflow ducting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/24—Multiple arrangement thereof
- B04C5/26—Multiple arrangement thereof for series flow
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/03—Vacuum cleaner
Definitions
- the invention relates to an improved shroud and to apparatus incorporating an improved shroud.
- a shroud is used in conjunction with cyclonic dust separation means to filter an airflow.
- cyclonic dust separation means ie. two separate cyclones arranged in series to remove, initially, larger pieces of dirt and fluff and, subsequently, finer dust particles
- the shroud is positioned between the two cyclone arrangements and the airflow is passed through the shroud to reduce the possibility of larger pieces of dust and fluff entering the second, high efficiency cyclone.
- the invention provides a shroud as claimed in claim 1.
- Advantageous and preferable features are set out in the subsidiary claims. When used in conjunction with dual cyclonic separation means, these arrangements improve the percentage of dirt, dust and fluff remaining in the low efficiency cyclone which, in turn, improves the performance of the high efficiency cyclone and thus of the entire separation means.
- Figure 1 is a side view, partially in section, of a shroud incorporating the present invention
- Figure 2a is an enlarged sectional view of part of the wall of the perforated portion of the embodiment shown in Figure 1;
- Figure 2b is an enlarged detail of the embodiment shown in Figure 1;
- Figure 3 is a side view of a second embodiment of the present invention.
- Figure 3a is an enlarged section through part of the wall of the perforated section of the embodiment shown in Figure 3.
- FIG 1 shows a shroud 10 having a cylindrical portion 12 in which is located a perforated portion 14.
- the perforated portion 14 has a lower edge 16 from which depends a lip 18 which will be described in greater detail below.
- Extending radially inwardly from the lower edge 16 of the perforated portion 14 is an annular web 20 which communicates with or seals against an inner cyclone 22.
- the inner cyclone 22 forms no part of the present invention and will not be described in any further detail here.
- the web 20 effectively forms support means for and a seal against the cylindrical portion 12.
- Further support and sealing means 24 are located at the upper edge of the cylindrical portion 12 but which, again, do not form part of the present invention, except to support the cylindrical portion 12.
- Figure 2a shows, in sectional view, a portion of the wall 26 forming the perforated portion 14.
- the wall 26 has an upstream surface 28 and a multiplicity of perforations 30 through which, in use, the airflow passes in the direction of arrows 32.
- the perforations have been formed in such a manner that the upstream edge of each perforation incorporates a radius at its intersection with the upstream surface of the shroud.
- the upstream edge of each perforation 30 meets the upstream surface 28 at a sharply defined angle.
- Such an angle can be produced by forming the perforations 30 by drilling or, if desired, by moulding or any other suitable manufacturing process.
- the provision of a sharp angle at the intersection between the upstream edge of each perforation 30 and the upstream surface 28 of the shroud 10 decreases the amount of fine dust passing through the perforations 30 and therefore decreases the risk of the perforations 30 becoming blocked by dust and fluff particles.
- the thickness of the material t forming the wall 26 is substantially 2mm.
- the diameter d of each cylindrical perforation 30 is substantially 2.2mm.
- the embodiment shown in Figure 1 includes a lip 18 depending from the lower edge 16 of the perforated portion 14.
- the lip 18, which is shown in more detail in Figure 2b, essentially comprises a parallel sided portion 34 extending substantially parallel to the longitudinal axis 36 of the shroud 10.
- the distal end of the parallel-sided portion 34 is inclined at an angle a of substantially 45 * .
- a step 38 is formed, the breadth b of the step 38 being substantially the same as the breadth B of the parallel-sided portion 34. Both the breadth b and the breadth B are, in the embodiment shown, substantially 2mm.
- the height h of the step 38 corresponds substantially to the breadth b of the step 38 and, again, is approximately 2mm in this embodiment.
- the distance x to which the lip 18 extends below the lower edge 16 of the perforated portion 14 is approximately 15mm.
- this shape of bottom lip 18 of the shroud 10 reduces the amount of blockage of the perforations 30 in the shroud 10 and the amount of fine dust passing through the perforations 30 when used in dual cyclonic vacuum cleaning apparatus with the shroud 10 being positioned in the airflow path between a low efficiency cyclone and a high efficiency cyclone.
- a relatively large proportion of dirt and dust is retained in the low efficiency cyclone and the step 38 also improves the seal between the lip 18 and the lower edge 16 of the perforated section 14.
- Figure 3 illustrates a second embodiment of the invention.
- a frusto-conical shroud 40 is illustrated having support means 42 located at the upper end thereof.
- a frusto-conical perforated portion 44 is located in the frusto-conical shroud 40.
- a multiplicity of perforations 46 are arranged in the perforated portion 44 and
- Figure 3a is a sectional view through part of the side wall 48 of the perforated portion 44.
- the thickness t of the material forming the side wall 48 of the shroud 40 is substantially 2mm.
- the diameter d of each cylindrical perforation 46 is substantially 2.2mm.
- the longitudinal axis of each perforation 46 is substantially perpendicular to the longitudinal axis 50 of the shroud 40 and the angle at which the interior wall of each perforation meets the external surface of the side wall 48 is sharply defined.
- the angle of inclination 3 of the side wall 48 to the longitudinal axis 50 of the shroud 40 is substantially 12.5 * .
- this angle could be varied according to the requirements of the cyclonic dust separating apparatus and particularly to the angle of inclination of the inclined wall of the high efficiency cyclone.
- the angle of inclination ⁇ is preferably substantially identical to the angle of inclination of the wall of the high efficiency cyclone so that the wall 48 of the shroud 40 can be located parallel to the inclined wall of the high efficiency cyclone whilst still providing for the passage of air between the perforations and the high efficiency cyclone.
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU43112/96A AU697029B2 (en) | 1994-12-28 | 1995-12-27 | Shroud and cyclonic cleaning apparatus incorporating same |
US08/860,077 US5893936A (en) | 1994-12-28 | 1995-12-27 | Shroud and cyclonic cleaning apparatus incorporating same |
JP52031196A JP3449723B2 (en) | 1994-12-28 | 1995-12-27 | Shroud and cyclone-type vacuum cleaner having the same |
BR9510427A BR9510427A (en) | 1994-12-28 | 1995-12-27 | Covered for application in an appliance incorporating a cyclonic separation device to separate dirt and dust from an air flow and apparatus for separating dirt and dust from an air flow |
DE69503926T DE69503926T4 (en) | 1994-12-28 | 1995-12-27 | ENCLOSURE AND PROVIDED CYCLONE VACUUM CLEANER |
EP95941811A EP0800360B1 (en) | 1994-12-28 | 1995-12-27 | Shroud and cyclonic cleaning apparatus incorporating same |
KR1019970704426A KR100244891B1 (en) | 1994-12-28 | 1995-12-27 | Shroud and cyclonic cleaning apparatus incorporating smae |
DE69503926A DE69503926D1 (en) | 1994-12-28 | 1995-12-27 | ENCLOSURE AND CYCLONE VACUUM CLEANER WITH IT |
HK98102945A HK1003612A1 (en) | 1994-12-28 | 1998-04-08 | Shroud and cyclonic cleaning apparatus incorporating same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9426287A GB2296452A (en) | 1994-12-28 | 1994-12-28 | Shroud for cyclone separator |
GB9426287.0 | 1994-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996019937A1 true WO1996019937A1 (en) | 1996-07-04 |
Family
ID=10766642
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1995/003040 WO1996019936A1 (en) | 1994-12-28 | 1995-12-27 | Shroud and cyclonic cleaning apparatus incorporating same |
PCT/GB1995/003041 WO1996019937A1 (en) | 1994-12-28 | 1995-12-27 | Shroud and cyclonic cleaning apparatus incorporating same |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1995/003040 WO1996019936A1 (en) | 1994-12-28 | 1995-12-27 | Shroud and cyclonic cleaning apparatus incorporating same |
Country Status (18)
Country | Link |
---|---|
US (2) | US5853440A (en) |
EP (2) | EP0800359B1 (en) |
JP (2) | JPH10511570A (en) |
KR (1) | KR100244891B1 (en) |
CN (2) | CN1094339C (en) |
AR (1) | AR001333A1 (en) |
AT (2) | ATE169199T1 (en) |
AU (2) | AU697029B2 (en) |
BR (2) | BR9510427A (en) |
CA (2) | CA2209138A1 (en) |
DE (3) | DE69503926D1 (en) |
ES (2) | ES2130690T3 (en) |
GB (1) | GB2296452A (en) |
HK (1) | HK1003612A1 (en) |
MY (1) | MY113796A (en) |
RU (2) | RU2150227C1 (en) |
WO (2) | WO1996019936A1 (en) |
ZA (1) | ZA9511037B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6129775A (en) * | 1998-08-19 | 2000-10-10 | G.B.D. Corp. | Terminal insert for a cyclone separator |
US6168716B1 (en) | 1998-08-19 | 2001-01-02 | G.B.D. Corp. | Cyclone separator having a variable transverse profile |
US6277278B1 (en) | 1998-08-19 | 2001-08-21 | G.B.D. Corp. | Cyclone separator having a variable longitudinal profile |
US6334234B1 (en) | 1999-01-08 | 2002-01-01 | Fantom Technologies Inc. | Cleaner head for a vacuum cleaner |
US6419719B2 (en) | 1998-08-19 | 2002-07-16 | G.B.D. Corp. | Cyclonic vacuum cleaner |
US7874040B2 (en) | 2007-11-01 | 2011-01-25 | Dyson Technology Limited | Cyclonic separating apparatus |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9817071D0 (en) | 1997-11-04 | 1998-10-07 | Bhr Group Ltd | Cyclone separator |
GB9817073D0 (en) | 1997-11-04 | 1998-10-07 | Bhr Group Ltd | Phase separator |
US6484350B2 (en) | 1999-12-08 | 2002-11-26 | Shell Electric Mfg. (Holdings) Co. Ltd. | Bagless canister vacuum cleaner |
US6269518B1 (en) | 1999-12-08 | 2001-08-07 | Shell Electric Mfg. (Holdings) Co. Ltd. | Bagless vacuum cleaner |
US6910245B2 (en) | 2000-01-14 | 2005-06-28 | White Consolidated Industries, Inc. | Upright vacuum cleaner with cyclonic air path |
US6558453B2 (en) | 2000-01-14 | 2003-05-06 | White Consolidated Industries, Inc. | Bagless dustcup |
DE60105810T2 (en) * | 2000-07-06 | 2006-02-23 | North, John Herbert, Honingham | Air particle separator |
US6613129B2 (en) | 2001-06-22 | 2003-09-02 | Euro-Pro Corporation | Cyclone and dust filter vacuum cleaner |
US6829804B2 (en) * | 2002-03-26 | 2004-12-14 | White Consolidated, Ltd. | Filtration arrangement of a vacuum cleaner |
US6887290B2 (en) | 2002-09-25 | 2005-05-03 | Federal Signal Corporation | Debris separation and filtration systems |
GB0228152D0 (en) | 2002-12-03 | 2003-01-08 | Techtronic Ind Co Ltd | Cyclonic separators for suction cleaners |
US7544224B2 (en) * | 2003-08-05 | 2009-06-09 | Electrolux Home Care Products, Inc. | Cyclonic vacuum cleaner |
GB2407784A (en) | 2003-11-08 | 2005-05-11 | Dyson Ltd | Separating apparatus |
US7410516B2 (en) * | 2005-03-17 | 2008-08-12 | Royal Appliance Mfg. Co. | Twin cyclone vacuum cleaner |
US8291545B2 (en) | 2005-06-24 | 2012-10-23 | Royal Appliance Mfg., Co. | Twin cyclone vacuum cleaner |
DE112006003479T5 (en) | 2005-12-22 | 2008-12-18 | Royal Appliance Mfg. Co., Glenwillow | Dual stage cyclone vacuum cleaner |
GB2450736B (en) | 2007-07-05 | 2012-06-20 | Dyson Technology Ltd | Cyclonic separating apparatus |
GB2450737B (en) | 2007-07-05 | 2011-10-12 | Dyson Technology Ltd | Cyclonic separating apparatus |
SE531908C2 (en) * | 2008-01-16 | 2009-09-08 | Electrolux Ab | Vacuum cleaner |
US9475180B2 (en) | 2010-01-07 | 2016-10-25 | Black & Decker Inc. | Power tool having rotary input control |
US8418778B2 (en) | 2010-01-07 | 2013-04-16 | Black & Decker Inc. | Power screwdriver having rotary input control |
US9266178B2 (en) | 2010-01-07 | 2016-02-23 | Black & Decker Inc. | Power tool having rotary input control |
US8152877B2 (en) * | 2010-03-12 | 2012-04-10 | Euro-Pro Operating Llc | Shroud for a cleaning service apparatus |
EP2631035B1 (en) | 2012-02-24 | 2019-10-16 | Black & Decker Inc. | Power tool |
US8997310B2 (en) | 2012-10-12 | 2015-04-07 | Electrolux Home Care Products, Inc. | Vacuum cleaner cyclone with helical cyclone expansion region |
EP2916705B1 (en) | 2012-11-09 | 2020-06-03 | Aktiebolaget Electrolux | Cyclone dust separator arrangement, cyclone dust separator and cyclone vacuum cleaner |
US9049972B1 (en) | 2013-01-09 | 2015-06-09 | Bissell Homecare, Inc. | Vacuum cleaner |
US11053814B2 (en) | 2019-03-18 | 2021-07-06 | General Electric Company | Turbine engine component and method of cooling |
US10941664B2 (en) | 2019-03-18 | 2021-03-09 | General Electric Company | Turbine engine component and method of cooling |
US11306655B2 (en) | 2019-03-18 | 2022-04-19 | General Electric Company | Turbine engine component and method of cooling |
US11008889B2 (en) | 2019-03-18 | 2021-05-18 | General Electric Company | Turbine engine hanger |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4853008A (en) * | 1988-07-27 | 1989-08-01 | Notetry Limited | Combined disc and shroud for dual cyclonic cleaning apparatus |
US5062870A (en) * | 1990-07-06 | 1991-11-05 | Notetry Limited | Shut-off device for cyclonic vacuum cleaner |
EP0489565A1 (en) * | 1990-12-03 | 1992-06-10 | Notetry Limited | Shroud and cyclonic cleaning apparatus incorporating same |
EP0557096A1 (en) * | 1992-02-19 | 1993-08-25 | Iona Appliances Inc. | Cyclonic back-pack vacuum cleaner |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3171910D1 (en) * | 1980-06-19 | 1985-09-26 | Rotork Appliances Ltd | Vacuum cleaning appliance |
US4593429A (en) * | 1980-06-19 | 1986-06-10 | Prototypes, Ltd. | Vacuum cleaning appliance |
US5160356A (en) * | 1980-06-19 | 1992-11-03 | Notetry Limited | Vacuum cleaning apparatus |
US4643748A (en) * | 1986-02-24 | 1987-02-17 | Notetry Limited | Cleaning apparatus |
US5090976A (en) * | 1990-09-21 | 1992-02-25 | Notetry Limited | Dual cyclonic vacuum cleaner with disposable liner |
US5145499A (en) * | 1990-09-21 | 1992-09-08 | Notetry Limited | Disposable bin for cyclonic vacuum |
-
1994
- 1994-12-28 GB GB9426287A patent/GB2296452A/en not_active Withdrawn
-
1995
- 1995-12-22 MY MYPI95004029A patent/MY113796A/en unknown
- 1995-12-27 CA CA002209138A patent/CA2209138A1/en not_active Abandoned
- 1995-12-27 CA CA002209071A patent/CA2209071A1/en not_active Abandoned
- 1995-12-27 ES ES95941810T patent/ES2130690T3/en not_active Expired - Lifetime
- 1995-12-27 EP EP95941810A patent/EP0800359B1/en not_active Expired - Lifetime
- 1995-12-27 DE DE69503926A patent/DE69503926D1/en not_active Expired - Lifetime
- 1995-12-27 DE DE69507966T patent/DE69507966T2/en not_active Expired - Fee Related
- 1995-12-27 ES ES95941811T patent/ES2120244T3/en not_active Expired - Lifetime
- 1995-12-27 RU RU97112908/12A patent/RU2150227C1/en not_active IP Right Cessation
- 1995-12-27 DE DE69503926T patent/DE69503926T4/en not_active Expired - Lifetime
- 1995-12-27 JP JP8520310A patent/JPH10511570A/en active Pending
- 1995-12-27 EP EP95941811A patent/EP0800360B1/en not_active Expired - Lifetime
- 1995-12-27 JP JP52031196A patent/JP3449723B2/en not_active Expired - Lifetime
- 1995-12-27 WO PCT/GB1995/003040 patent/WO1996019936A1/en not_active Application Discontinuation
- 1995-12-27 AT AT95941811T patent/ATE169199T1/en not_active IP Right Cessation
- 1995-12-27 CN CN95197657A patent/CN1094339C/en not_active Expired - Lifetime
- 1995-12-27 WO PCT/GB1995/003041 patent/WO1996019937A1/en active IP Right Grant
- 1995-12-27 KR KR1019970704426A patent/KR100244891B1/en not_active IP Right Cessation
- 1995-12-27 BR BR9510427A patent/BR9510427A/en not_active IP Right Cessation
- 1995-12-27 AT AT95941810T patent/ATE176852T1/en not_active IP Right Cessation
- 1995-12-27 RU RU97112890/12A patent/RU2145481C1/en not_active IP Right Cessation
- 1995-12-27 US US08/860,362 patent/US5853440A/en not_active Expired - Fee Related
- 1995-12-27 BR BR9510224A patent/BR9510224A/en not_active IP Right Cessation
- 1995-12-27 AU AU43112/96A patent/AU697029B2/en not_active Expired
- 1995-12-27 CN CN95197658.3A patent/CN1175191A/en active Pending
- 1995-12-27 US US08/860,077 patent/US5893936A/en not_active Expired - Lifetime
- 1995-12-27 AU AU43111/96A patent/AU691710B2/en not_active Ceased
- 1995-12-28 ZA ZA9511037A patent/ZA9511037B/en unknown
- 1995-12-28 AR AR33486095A patent/AR001333A1/en unknown
-
1998
- 1998-04-08 HK HK98102945A patent/HK1003612A1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4853008A (en) * | 1988-07-27 | 1989-08-01 | Notetry Limited | Combined disc and shroud for dual cyclonic cleaning apparatus |
US5062870A (en) * | 1990-07-06 | 1991-11-05 | Notetry Limited | Shut-off device for cyclonic vacuum cleaner |
EP0489565A1 (en) * | 1990-12-03 | 1992-06-10 | Notetry Limited | Shroud and cyclonic cleaning apparatus incorporating same |
EP0636338A2 (en) * | 1990-12-03 | 1995-02-01 | Notetry Limited | Shroud and cyclonic cleaning apparatus incorporating same |
EP0557096A1 (en) * | 1992-02-19 | 1993-08-25 | Iona Appliances Inc. | Cyclonic back-pack vacuum cleaner |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6129775A (en) * | 1998-08-19 | 2000-10-10 | G.B.D. Corp. | Terminal insert for a cyclone separator |
US6168716B1 (en) | 1998-08-19 | 2001-01-02 | G.B.D. Corp. | Cyclone separator having a variable transverse profile |
US6277278B1 (en) | 1998-08-19 | 2001-08-21 | G.B.D. Corp. | Cyclone separator having a variable longitudinal profile |
US6419719B2 (en) | 1998-08-19 | 2002-07-16 | G.B.D. Corp. | Cyclonic vacuum cleaner |
US6596046B2 (en) | 1998-08-19 | 2003-07-22 | G.B.D. Corp. | Cyclone separator having a variable longitudinal profile |
US6334234B1 (en) | 1999-01-08 | 2002-01-01 | Fantom Technologies Inc. | Cleaner head for a vacuum cleaner |
US7874040B2 (en) | 2007-11-01 | 2011-01-25 | Dyson Technology Limited | Cyclonic separating apparatus |
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