US3866263A - Cleaner with auxiliary air flow - Google Patents

Cleaner with auxiliary air flow Download PDF

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Publication number
US3866263A
US3866263A US352008A US35200873A US3866263A US 3866263 A US3866263 A US 3866263A US 352008 A US352008 A US 352008A US 35200873 A US35200873 A US 35200873A US 3866263 A US3866263 A US 3866263A
Authority
US
United States
Prior art keywords
air
flow
fan
motor
suction
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.)
Expired - Lifetime
Application number
US352008A
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English (en)
Inventor
Darwin S Crouser
Joseph A Powers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoover Co
Original Assignee
Hoover Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hoover Co filed Critical Hoover Co
Priority to US352008A priority Critical patent/US3866263A/en
Priority to CA180,896A priority patent/CA985008A/en
Priority to JP49035501A priority patent/JPS49130066A/ja
Priority to GB1626674A priority patent/GB1465198A/en
Application granted granted Critical
Publication of US3866263A publication Critical patent/US3866263A/en
Assigned to MAYTAG CORPORATION, A DE CORP. reassignment MAYTAG CORPORATION, A DE CORP. MERGER (SEE DOCUMENT FOR DETAILS). JANUARY 26, 1989 - DELEWARE Assignors: CHICAGO PACIFIC CORPORATION
Assigned to HOOVER COMPANY, THE reassignment HOOVER COMPANY, THE NUNC PRO TUNC ASSIGNMENT (SEE DOCUMENT FOR DETAILS). Assignors: MAYTAG CORPORATION
Assigned to CHICAGO PACIFIC CORPORATION, A CORP. OF DE reassignment CHICAGO PACIFIC CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). DECEMBER 31, 1987 - DELAWARE Assignors: HOOVER COMPANY, THE, (MERGED INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping

Definitions

  • ABSTRACT provides a floor care appliance in which an auxiliary flow of air is introduced to floor care appliance mainstream air after the same has passed through the dirt bag, motor, and suction fan system.
  • An advantageous arrangement is arrived at that provides a much lower air discharge temperature and an advantageous cooling of the cleaner body in the area of this air discharge.
  • This invention relates, generally, to floor care appliances and, more specifically, relates to floor care appliances having an auxiliary air flow introduced to the floor care appliance for cooling purposes.
  • auxiliary air flow for cooling purposes in electrically actuated floor care appliances is generally old and well known.
  • auxiliary air flow has been utilized to cool the electric motor driving the fan generating suction, to separate a moist suction discharge on floor care machines from the motor compartment and to provide suction relief upstream from the electric motor toeliminate the possibility of motor burn-out by clogging of the dirt-laden suction stream.
  • auxiliary air none of the aforesaid uses of auxiliary air have been found as effective for cooling the discharge. air stream and its adjacent cleaner structure as an auxiliary air flow which is introduced directly into-the pressure air flow immediately before the exhaust of the same from the floor care appliance.
  • a floor care appliance such as a canister cleaner
  • cleaner air flow is caused to move through a filter bag contained in the cleaner, through a motor situated downstream of the filter bag and through a fan system for providing a pressure differential to urge dirt-laden air into the filter bag.
  • an additional fan means that may be an actual fan structure or a viscous fan which motivates a secondary flow of auxiliary ambient air into the cleaner.
  • Such air may be, advantageously, drawn through the rear of the canister cleaner by means of a louvered assembly so as to maintain this air flow discrete from the suction air flow being provided at the canister cleaner nozzle.
  • the auxiliary air is discharged peripherally outwardly by this fan means so that it merges directly with the discharge or pressure air from the suction inducing fan system after it passes through that fan system, the motor, and filter bag. Exit louvers on the top side of the cleaner are utilized to lead the mixed suction air and auxiliary air to atmosphere discharge.
  • FIG. 1 is a perspective view of a canister cleaner incorporating the invention
  • FIG. 2 is a sectional elevational view of the invention with certain features shown schematically;
  • FIG. 3 is a plan 'view of the cleaner, partly broken away, with certain features shown schematically;
  • FIG. 4 is an enlarged, sectional, elevational view, generally of the fan section of the cleaner, with certain features shown schematically;
  • FIG. 5 is a cross-sectional elevational view taken on line 55 of FIG. 4, with certain parts removed and certain features shown schematically;
  • FIG.'6 is across-sectional elevational view taken on line 66 of FIG. 4, with certain features of the invention shown schematically;
  • FIG. 7 is a cross-sectional elevational view taken on line 77 of FIG. 4, with certain features of the invention shown schematically;
  • FIG. 8 is a cross-sectional elevational view taken on line 88 of FIG. 4, with certain features thereof shown schematically;
  • FIG. 9 is a partial cross-sectional elevational view taken on line 9-9 of FIG. 3, with certain features of the invention shown schematically.
  • FIGS. 1, 2 and 3 there is shown a canister cleaner 10 having a split casing 12 forming an enclosure for the internal operating components of the cleaner 10.
  • Rear wheels 14, 14 and front wheel 16 permit the cleaner 10 to be easily moved about the floor.
  • Suction tube 18 (only partially shown) may conveniently terminate in a nozzle (not shown) for the pick up of grime or dirt encrusted in or present on the rugs or floors being cleaned.
  • Handle 20 is provided at the front end of the cleaner 10 so that it may be easily carried by the user of the cleaner 10.
  • Exhaust louvers 22 are disposed in a top portion 23 of the split casing 12 to provide an exit arrangement for pressure air moved into the cleaner by the motivating means disposed therein.
  • Auxiliary air intake louvers 24 are positioned in a rear face 25 of the cleaner 10 so as to provide a convenient entrance for the auxiliary air utilized in cooling in the instant invention.
  • the cleaner 10 includes a conventional dust bag 26 disposed upstream of an electric motor 28 so that the suction air moves through the dust bag into the motor as urged by a fan section 30 provided downstream from the dust bag 26 and motor 28.
  • suction air moves through the filter bag 26 and then passes into the motor 28 by either moving into the motor 28 through an end bell 32 or by entering through a series of slots 34 extending longitudinally (axially) of the motor 28, or through apertures 36 disposed near the rear portion of the motor 28.
  • suction air flows outwardly of motor 28 substantially axially by being discharged througha casing end face 37 so as to be presented to an eye 39 of a centrifugal fan 38 of fan section 30.
  • This fan discharges the partially pressurized air radially peripherally into a diffuser 40 so that the air can again be directed inwardly (radially) to be discharged axially intoan eye 41 of a second centrifugal fan 42.
  • the fan 42 as well as the fan 38, are substantially conventional so that no further description of them will be offered, it being sufficient to note that the discharge from the second centrifugal fan 42 moves outwardly past a fan baffle 44 having struck-out peripheral directing vanes 46, each of which provides an aperture and a'louver to maintain the pressure flow of the discharge air parallel to the axis of the cleaner 10 and spaced outwardly therefrom.
  • the baffle 44 as well as the directing vanes 46 serve as a diffuser arrangement to convert a portion of the velocity of the pressure air to pressure and thereby reduces noise produced by this air stream.
  • the baffle 44 may also include a series of integral dimples 47. which provide rigidity to its disk shape.
  • Auxiliary air enters through the auxiliary air intake louvers 24 (FIG. 2) and moves through a compartment 52 provided for a cord reel 54 or the like which may be utilized to store a power cord (not shown) for the cleaner 10.
  • a baffle or partition 56 closes off the cord reel compartment 52 from the forward portion of the cleaner 10 so as to isolate the cord and power reel from the fan system 30, motor 28 and other parts of the cleaner 10.
  • the baffle or partition 56 (FIG. 4) includes a series of slots 58 formed centrally thereof in a hat-shaped portion 60 of the baffle 56. More specifically, an annular, axially extending projection is formed integrally with the partition 56, with the same providing an attachment means for an auxiliary air boot 62 which leads the flow of auxiliary air into an auxiliary fan 64.
  • Auxiliary air boot 62 includes a collar portion 66 of annular configuration which fits tightly against hat portion 60 of baffle 56 so that the auxiliary air flow is directed towards the auxiliary fan 64.
  • Attached integrally to the collar portion 62 is a lead-in portion 68 that is formed by extending the collar portion 66 radially inwardly to terminate proximate the slots 58.
  • integrally attached to the lead-in portion 68 is a second collar portion 69 that extends axially so that it forms a fairly tight seal with an outer, annular rim 70, formed on the fan baffle 44;
  • Both the annular rim 70 of the fan baffle 44 and the second collar portion 69 of the auxiliary air boot 62 are disposed centrally of the cleaner so that the auxiliary air fan 64 is mounted centrally relative to the eye of the second fan 42.
  • a common shaft 72 may conveniently mount, in tandem, the fan 38, fan 42 and also the auxiliary fan 64 so that power is easily'supplied to these fans through the shaft 72 from the motor 28.
  • the auxiliary fan 64 may be in the configuration of a paddle wheel with radially extending paddles 73 and also may be relatively thin in width since a large volume or air is not needed and since a portion of the auxiliary air flow will be provided merelyby the fact that a confronting face 75 of fan 42 provides a viscous fan for the induction of auxiliary air flow
  • the additional auxiliary air flow required for cooling is conveniently supplied, primarily, by the simplified construction of auxiliary air fan 64.
  • the flow of this auxiliary air is discharged between an inner face 77 of fan baffle 44 and the confronting face 75 of the second fan 42.
  • This discharged auxiliary air mixes with discharged pressure flow of air in the general volume of cleaner l0 afforded between the baffle 44 and the termination of the outer radial periphery of the fan 42. It then moves through and further mixes, generally, in the area of the directing vanes 46. Additional mixing of this air may then occur downstream of this location in the area between the fan baffle 44 and an outer, annular portion 77 of the fan housing 50.
  • the mixed air is discharged outwardly of the fan housing 50 by means of the aforementioned passageway 48 and then led therefrom through a chamber 74 formed by the baffle or partition 56, the fan housing 50 and the inner periphery of the cleaner casing 12.
  • This air then moves towards discharge through a pair of channel means 76 (FIGS. 2 and 9) each formed by an axially extending partition 78 and the inner surface of cleaner casing 12.
  • This partition has an axial extent
  • a series of panels 80, 82 and 84 divide the width of each of the passage means 76 so that discharge air from the cleaner is also subject to dispersal between the individual channels formed by these panels.
  • the auxiliary air is imparted with centrifugal force by the auxiliary air fan to discharge this air flow radially outwardly of the auxiliary air fan 64 so that it moves between the fan baffle 44 and the outer face of the second centrifugal fan 42. This air then mixes with the suction air as it exits through the fan baffle 44, with direction being given to the combined flow by the directing vanes 46.
  • the mixed air undergoes additional mixing in the passageway 48 and is discharged from the fan housing 50 through passageway 48 and led into the pair of channel means 76 and from thence to room atmosphere through the discharge louvers 22.
  • the auxiliary air cools only the exhaust suction air and the cleaner portions downstream of the auxiliary air fan 64 so that air discharge temperature and the temperature of portions of cleaner housing 12 adjacent thereto are effectively reduced to eliminate operator injury or discomfort caused by impingement of any hot air flows and cleaner hot spots.
  • auxiliary air louvers 24 could be located differently or dispensed with entirely if the fitting for the cleaner housing parts was sufficiently loose so that the leakage of outside air would be of a sufficient quantity, as driven by the auxiliary air fan 64, to provide the desired reduction in temperature of the discharge air and surrounding cleaner structure.
  • auxiliary air fan 64 could be dispensed with entirely and the flow of cooling air through the auxiliary air louvers 24 could be induced by the viscous fan means formed by the confronting face 75 of fan 42 so that this face would then serve as the auxiliary air fan means. Equally obvious other modifications would readily occur to one skilled in the art.
  • a floor care appliance for providing a suction flow of air for cleaning purposes having a casing and includmg;
  • a motor and motor-driven suction fan means for providing said suction flow, said suction flow moving directly through a suction inlet for said casing and then through a filter means for said floor care appliance to then pass through said motor for cooling the same so that the temperature of the suction flow of air is thereby increased, said suction flow of air then passing through said motor-driven suction fan means to become a pressure flow of air,
  • said auxiliary fan means discharging said auxiliary flow of air to said pressure flow of air downstream of said motor, immediately adjacent the downstream discharge of said motor-driven suction fan means, for cooling said pressure flow, without impinging said auxiliary flow of air on said suction flow of air in the volume encompassed by said motor and between it and the discharge of said motor-driven suction fan means.
  • a motor and motor-driven fan suction means for providing a suction flow of air through said motor and a pressure flow of air discharged from said motor-driven fan suction means
  • auxiliary fan means and said motor'driven pressure fan means are driven from a common shaft extending from said motor.
  • an apertured fan baffle means is disposed downstream of said auxiliary fan means and said motordriven suction fan means, and
  • said auxiliary air flow is discharged into said pressure flow to provide a combined flow prior to movement of said flow through said apertured fan baffle means.
  • said apertured fan baffle means includes directing vanes that direct said combined flow axially of said floor care appliance, and
  • a chamber means disposed downstream of said apertured fan baffle means for providing for further mixing of said combined flow.
  • a housing is provided for covering and forming said chamber means around said auxiliary fan means and said motor-driven suction fan means, and
  • said apertured fan baffle means is disposed within said housing.
  • a passageway means is provided from said fan housing, and
  • said floor care appliance includes a boot means for guiding said auxiliary air flow to said auxiliary fan means,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Electric Suction Cleaners (AREA)
US352008A 1973-04-17 1973-04-17 Cleaner with auxiliary air flow Expired - Lifetime US3866263A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US352008A US3866263A (en) 1973-04-17 1973-04-17 Cleaner with auxiliary air flow
CA180,896A CA985008A (en) 1973-04-17 1973-09-12 Cleaner with auxiliary air flow
JP49035501A JPS49130066A (enrdf_load_stackoverflow) 1973-04-17 1974-03-29
GB1626674A GB1465198A (en) 1973-04-17 1974-04-11 Suction cleaner with auxiliary air flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US352008A US3866263A (en) 1973-04-17 1973-04-17 Cleaner with auxiliary air flow

Publications (1)

Publication Number Publication Date
US3866263A true US3866263A (en) 1975-02-18

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Application Number Title Priority Date Filing Date
US352008A Expired - Lifetime US3866263A (en) 1973-04-17 1973-04-17 Cleaner with auxiliary air flow

Country Status (4)

Country Link
US (1) US3866263A (enrdf_load_stackoverflow)
JP (1) JPS49130066A (enrdf_load_stackoverflow)
CA (1) CA985008A (enrdf_load_stackoverflow)
GB (1) GB1465198A (enrdf_load_stackoverflow)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943597A (en) * 1973-03-14 1976-03-16 A/S Fisker & Nielsen Vacuum cleaner
US3958299A (en) * 1973-09-13 1976-05-25 The Hoover Company Auxiliary air cooling system for canister cleaners
USD247117S (en) 1976-03-17 1978-01-31 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
US4088424A (en) * 1977-05-23 1978-05-09 Ametek, Inc. Wet pick-up vacuum unit motor bearing air seal
USRE32027E (en) * 1977-05-23 1985-11-12 Ametek, Inc. Wet pick-up vacuum unit motor bearing air seal
USD289213S (en) 1984-12-17 1987-04-07 Sears, Roebuck And Co. Canister vacuum
US5349721A (en) * 1992-02-18 1994-09-27 Kioritz Corporation Fan apparatus
USD399616S (en) 1997-01-10 1998-10-13 White Consolidated Industries, Inc. Canister vacuum cleaner
US5946771A (en) * 1997-01-09 1999-09-07 The Hoover Company Vacuum cleaner air exhaust arrangement
US5974623A (en) * 1998-02-04 1999-11-02 Rexair, Inc. Vacuum cleaner motor housing
US6069423A (en) * 1999-04-21 2000-05-30 Vita-Mix Corporation Motor cooling and sound absorbing system
US6085382A (en) * 1997-01-10 2000-07-11 White Consolidated Industries, Inc. Air filtrating self-propelled upright vacuum cleaner
US20030145426A1 (en) * 2002-02-07 2003-08-07 Jesus Fernandez-Grandizo Martinez Vacuum cleaner cooling system
US6611989B2 (en) * 2000-09-19 2003-09-02 Lg Electronics Inc. Vacuum cleaner having cooling features
US6680551B2 (en) 2001-08-20 2004-01-20 Hamilton Beach/Proctor-Silex Electric motor muffler
US20050287024A1 (en) * 2004-06-25 2005-12-29 Robert Bosch Gmbh Air pump assembly
US20060260091A1 (en) * 2005-05-18 2006-11-23 Hwa-Gyu Song Vacuum cleaner
US20070143952A1 (en) * 2005-12-27 2007-06-28 Samsung Electronics Co., Ltd. Vacuum cleaner and method for reducing noise generated thereby
US20080206050A1 (en) * 2007-02-28 2008-08-28 Finkenbinder David B Dual taper fan-motor assembly
CN100421608C (zh) * 2003-08-22 2008-10-01 松下电器产业株式会社 电动吸尘器
US20100269288A1 (en) * 2009-04-23 2010-10-28 Dong-Hun Yoo Upright type vacuum cleaner
CN104534530A (zh) * 2014-10-24 2015-04-22 周月生 免清洗吸油烟机
US20160113467A1 (en) * 2014-10-22 2016-04-28 Dyson Technology Limited Vacuum cleaner with motor cooling
US20180110384A1 (en) * 2016-10-21 2018-04-26 Nidec Corporation Motor module and vacuum cleaner
US10244912B2 (en) 2014-10-22 2019-04-02 Dyson Technology Limited Vacuum cleaner with motor between separation stages
US11038405B2 (en) 2017-10-12 2021-06-15 Dyson Technology Limited Electric machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533370A (en) * 1982-03-30 1985-08-06 Sharp Kabushiki Kaisha Electric cleaner with minimum noise
JP2560098Y2 (ja) * 1990-10-19 1998-01-21 廣光 奥村 吸引装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240000A (en) * 1962-11-02 1966-03-15 Mitchell Co John E Vacuum cleaning system
US3733150A (en) * 1971-03-15 1973-05-15 Ametek Inc Motor-fan unit for moving wet working air
US3780397A (en) * 1973-01-03 1973-12-25 Singer Co Wet/dry suction cleaner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240000A (en) * 1962-11-02 1966-03-15 Mitchell Co John E Vacuum cleaning system
US3733150A (en) * 1971-03-15 1973-05-15 Ametek Inc Motor-fan unit for moving wet working air
US3780397A (en) * 1973-01-03 1973-12-25 Singer Co Wet/dry suction cleaner

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943597A (en) * 1973-03-14 1976-03-16 A/S Fisker & Nielsen Vacuum cleaner
US3958299A (en) * 1973-09-13 1976-05-25 The Hoover Company Auxiliary air cooling system for canister cleaners
USD247117S (en) 1976-03-17 1978-01-31 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
US4088424A (en) * 1977-05-23 1978-05-09 Ametek, Inc. Wet pick-up vacuum unit motor bearing air seal
USRE32027E (en) * 1977-05-23 1985-11-12 Ametek, Inc. Wet pick-up vacuum unit motor bearing air seal
USD289213S (en) 1984-12-17 1987-04-07 Sears, Roebuck And Co. Canister vacuum
US5349721A (en) * 1992-02-18 1994-09-27 Kioritz Corporation Fan apparatus
US5946771A (en) * 1997-01-09 1999-09-07 The Hoover Company Vacuum cleaner air exhaust arrangement
US6085382A (en) * 1997-01-10 2000-07-11 White Consolidated Industries, Inc. Air filtrating self-propelled upright vacuum cleaner
US6308374B1 (en) 1997-01-10 2001-10-30 White Consolidated Industries, Inc. Air filtering self-propelled upright vacuum cleaner
US6484352B2 (en) 1997-01-10 2002-11-26 White Consolidated Industries, Inc. Vacuum cleaner with thermal cutoff
US6553611B2 (en) 1997-01-10 2003-04-29 White Consolidated Industries, Inc. Vacuum cleaner with thermal cutoff
USD399616S (en) 1997-01-10 1998-10-13 White Consolidated Industries, Inc. Canister vacuum cleaner
US5974623A (en) * 1998-02-04 1999-11-02 Rexair, Inc. Vacuum cleaner motor housing
US6069423A (en) * 1999-04-21 2000-05-30 Vita-Mix Corporation Motor cooling and sound absorbing system
US6611989B2 (en) * 2000-09-19 2003-09-02 Lg Electronics Inc. Vacuum cleaner having cooling features
US6680551B2 (en) 2001-08-20 2004-01-20 Hamilton Beach/Proctor-Silex Electric motor muffler
US6807709B2 (en) 2002-02-07 2004-10-26 Koblenz Electrica, S.A. De C.V. Vacuum cleaner cooling system
US20030145426A1 (en) * 2002-02-07 2003-08-07 Jesus Fernandez-Grandizo Martinez Vacuum cleaner cooling system
CN100421608C (zh) * 2003-08-22 2008-10-01 松下电器产业株式会社 电动吸尘器
US20050287024A1 (en) * 2004-06-25 2005-12-29 Robert Bosch Gmbh Air pump assembly
US7775576B2 (en) 2004-06-25 2010-08-17 Robert Bosch Gmbh Air pump assembly
US7596829B2 (en) 2005-05-18 2009-10-06 Samsung Gwangju Electronics Co., Ltd. Vacuum cleaner
US20060260091A1 (en) * 2005-05-18 2006-11-23 Hwa-Gyu Song Vacuum cleaner
EP1741374A3 (en) * 2005-05-18 2008-03-05 Samsung Gwangju Electronics Co., Ltd. Motor chamber of vacuum cleaner
US7774898B2 (en) * 2005-12-27 2010-08-17 Samsung Electronics Co., Ltd. Vacuum cleaner and method for reducing noise generated thereby
US20070143952A1 (en) * 2005-12-27 2007-06-28 Samsung Electronics Co., Ltd. Vacuum cleaner and method for reducing noise generated thereby
US20080206050A1 (en) * 2007-02-28 2008-08-28 Finkenbinder David B Dual taper fan-motor assembly
US20100269288A1 (en) * 2009-04-23 2010-10-28 Dong-Hun Yoo Upright type vacuum cleaner
US20160113467A1 (en) * 2014-10-22 2016-04-28 Dyson Technology Limited Vacuum cleaner with motor cooling
US10016111B2 (en) * 2014-10-22 2018-07-10 Dyson Technology Limited Vacuum cleaner with motor cooling
US10244912B2 (en) 2014-10-22 2019-04-02 Dyson Technology Limited Vacuum cleaner with motor between separation stages
CN104534530A (zh) * 2014-10-24 2015-04-22 周月生 免清洗吸油烟机
CN104534530B (zh) * 2014-10-24 2017-01-18 周月生 免清洗吸油烟机
US20180110384A1 (en) * 2016-10-21 2018-04-26 Nidec Corporation Motor module and vacuum cleaner
US11038405B2 (en) 2017-10-12 2021-06-15 Dyson Technology Limited Electric machine

Also Published As

Publication number Publication date
GB1465198A (en) 1977-02-23
CA985008A (en) 1976-03-09
JPS49130066A (enrdf_load_stackoverflow) 1974-12-12

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HOOVER COMPANY, THE, OHIO

Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:MAYTAG CORPORATION;REEL/FRAME:005241/0179

Effective date: 19890223

Owner name: CHICAGO PACIFIC CORPORATION, A CORP. OF DE

Free format text: MERGER;ASSIGNOR:HOOVER COMPANY, THE, (MERGED INTO);REEL/FRAME:005241/0161

Effective date: 19871221

Owner name: MAYTAG CORPORATION, A DE CORP.

Free format text: MERGER;ASSIGNOR:CHICAGO PACIFIC CORPORATION;REEL/FRAME:005241/0170

Effective date: 19890126