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US2372944A - Vacuum cleaner - Google Patents

Vacuum cleaner Download PDF

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Publication number
US2372944A
US2372944A US440293A US44029342A US2372944A US 2372944 A US2372944 A US 2372944A US 440293 A US440293 A US 440293A US 44029342 A US44029342 A US 44029342A US 2372944 A US2372944 A US 2372944A
Authority
US
United States
Prior art keywords
filter
cover
casing
vacuum cleaner
air
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
US440293A
Other languages
English (en)
Inventor
Forsberg Axel Albert
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.)
Electrolux Corp
Original Assignee
Electrolux Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20306539&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US2372944(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Electrolux Corp filed Critical Electrolux Corp
Application granted granted Critical
Publication of US2372944A publication Critical patent/US2372944A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
    • A47L5/362—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the horizontal type, e.g. canister or sledge type
    • 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
    • A47L9/102—Dust separators
    • 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
    • A47L9/20—Means for cleaning filters
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842—Suction motors or blowers
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays

Definitions

  • My present invention relates to vacuum cleaners, and has for its object to improve the capacity of apparatus of this kind and at the same time simplify their operation.
  • Fig. l is a vertical longitudinal section of a vacuum cleaner constructed in accordance with the invention.
  • Fig. 2 is a plan view of the dust container 05 the apparatus with its cover removed.
  • Fig. 3 is a side view of said cover placed on supporting members arranged for this purpose.
  • Figs. 4-6 and 7 show details and a wiring diagram, respectively 01' the starting device of the vacuum cleaner motor.
  • Figs. 8 and 9 show details of the supporting means of the motor fan unit of the apparatus, Fig. 8 being a section along the line 8-8 of Fig. 9.
  • Figs. 10-14 show different details of the conon encloses spaces or chambers communicating with each other.
  • One of these chambers is a suction chamber I8 bounded by the outer wall IQ of the cover, an under wall connected to said outer wall, the filter l5, a cylindrical member 23 connected to or arranged in an opening in the under wall 20, a casing immediately surrounding the motor fan unit H within the member 23 and consisting of hoods 28, 23 and 30 suitably removably connected to each other, as well as a partition 2
  • -'I'he other chamber is a pressure chamber 22 bounded by the hoods 28, 29' and 30, the partition 2
  • the motor fan unit including a motor 24 and two. fans arranged on the shaft of the motor.
  • the under necting members between. the cover of the apparatus and the dust container, Fig. 13 being taken on the line
  • Figs. 15 and 16 showdetails of a cleaning device for the dust filter, Fig. 16 being a section along theline
  • Figs. 17 and 18 show details of said filter itself, Fig. 17 being a section along the line ll -ll of Fig. 18.
  • the vacuum cleaner consists of a suitably elongated lower part III formed as a dust container, and an upper part II of similar shape preferably serving as a cover for the dust container.
  • container ID are a number of supporting wheels I2 and i3 for the apparatus, of which two wheels l2 are arranged on horizontal axles rigidly connected to the dust container and suitably located at the rear end of the container.
  • wheel I3 is provided with a caster mounting.
  • the motor fan unit ll of the apparatus as well as dust filters l5 formed in known manner with concentric, circular folds The motor fan ings, located side by side.
  • the cover is provided with a carrying handle
  • the cover II with the members mounted therewall 20 is formed with one or, if desired, two
  • the inlet of the member 23 * is formed by one or more openings 26.
  • is suitably tightly connected to the casing surrounding the unit.
  • the motor 24 is resiliently mounted in rubber rings 21 arranged at its upper and lower nds. Of the hoods 23, 29 and 30 surrounding the unit, the latter two serve as fan hoods. The hoods 23, 29 and 30 have less diameter than the member 23, an annular channel 3
  • the member 23 extends somewhat deeper into the dust container than the hoods 2
  • Altemateguide bars are lengthened for improving the guiding of the air. If desired, they may, for this purpose, be bent or tilted.
  • the member 23 may be provided at its lower outer surface with one or more projections 35 of rubber or other suitable material, said projections serving as feet when the cover II is removed from the dust container l0.
  • one or more legs 35 adapted to cooperate with the feet 35 for supporting the cover in an upright position when outside the dust container, as when the latter is to be emptied.
  • the filter I5 is provided with a hand-operated cleaning or shaking device of a kind known per se and shown, for instance, in Patent No. 1,946,665 issued February 13, 1938, to Tom C. Bieth.
  • This device is adapted to be actuated by a push-button 31.
  • the cover H is provided, above the filter, with a valve device 38 through which air may flow through the space l8 directly to the fans, that is without passing through under wall around the opening therein, and the center of the filter is secured to center of frame
  • the hood 38 is opened and the button 3'! depressed, the part 45 is lowered and hence slack is provided in the folds of the filter. If the button is then released, the spring 94 moves the part 45 quickly upwardly, thus snapping the filter and dislodging dirt from the under side thereof. Even if the motor is running, no air flows through the filter inasmuch as hood 39 is open, and therefore the dislodged dirt settles in the dust container formed by the casing l0.
  • the valve consists of a hood 39 pivotally connected to the outer wall of the cover,-
  • the hood embraces the upper part of the knob 31, the operator being thus forced to open the hood, when the filter is to be shaken. This will cause air to fiow directly into the fans.
  • the edge of the hood bearing against the cover is provided with a packing strip 4
  • the hood is formed with a handle 42 for facilitating the opening thereof.
  • the hinge or hinges by means of which the hood is connected ,to the cover may suitably be yieldable or consist of a double link or the like so as to permit.
  • segments 44 of resilient material are-interposed between said filter points and the cross-shaped movable part 45 of the shaking device.
  • the points of the folds are kept in place against the segments 44 by means of metal wires 46 which engage the supporting rings 41 underneath said folds and pass through the resilient segments 44, and are fixed to the movable part 45 by being bent thereover, as is clearly shown in Figs. 1'7 and 18.
  • the shank 90 of button 31 carries a flanged member 9
  • the lower end of shank 90 is reciprocable within a cylindrical guide 92 which is supported on a frame 93.
  • a coil spring 54 is compressed between flanged member 9
  • the frame 93 passes through suitable apertures in the part 45 and is secured to the outer wall IQ of cover II.
  • This frame carries a circular hoop 95 which serves to support the lower intermediate fold of filter l5.
  • the fouter edge of the filter is secured to the extend along the bottom of the container and.
  • and 52 are arranged at its ends, around the axes of which handles the container may be rotated, when being emptied.
  • , which is formed with a continuous channel, serves as coupling means for the suction hose of the apparatus, while the other, 52, may be closed.
  • Each handle is formed with a milled collar 53 so as to facilitate said ro- -tation, when the container is being emptied,
  • the ends of the two legs of the clip 54 which are formed as eyes 56 are journalled on the pins 51 in attachments 58 connected to the cover l
  • Torsion springs 59 are arranged around'these pins 51 and inserted between said attachments and the eyes of the legs. The springs 59 serve to keep the legs directed obliquely outward when not engaging the handles 5
  • the lever 55 which is connected to the straight middle portion of the clip, is provided in a manner known per se with a roller at its end portion bearing against said handle.
  • the vacuum cleaner is provided with a switch combined with a starting resistance, the resistance having for its object to reduce the surge of current during starting.
  • the construction is such that the resistance is switched in on starting but, as soon as the manually applied force is relieved, the resistance is automatically shunted.
  • the entire starting device, including the starting resistance and switches, is placed in the pressure chamber 22 in such manner that it is cooled by the blowing air.
  • illustrated by the Figs. 4-7 consists of two switches 5
  • the switches are These The device which is clearly" 2,872,944 rigidly connected to an insulating piece 64 through which the levers 65 and 66 of the switches pass.
  • This insulating piece 64 is tightly connected to the cover I and also forms the bottom of a casing 67 surrounding the connecting contacts 68 of the apparatus.
  • Slidably mounted between the casing 61 and the insulating piece 65 are the hand-operated switch members, namely bars 69 and 10, by means of which the switches are thrown.
  • Said bars which are suitably made of insulating material are slidable in the walls 61 of the casing.
  • the double pole switch 62 is connected in the leads of motor 24.
  • the resistance $3 is connected in series in one of the leads and the switch 6! is connected to shunt the resistance.
  • a pressure spring I! is inserted between a tongue 11 connected to said spring and the casing 61.
  • said bars are provided with projections 18 and 19 so that the bar 69, when in operation, entrains the bar in.
  • a vacuum cleaner an elongated casing open at the top and forming a dust receptacle, means forming an air and dust inlet at one end of said casing, a closure for said casing, said closure including an outer top wall and an under wall, said under wall being formed with an opening adjacent said inlet, a dust separating member disposed across said opening, a hollow air tight member depending in air tight relationship from said under wall into said casing, said hollow member being located at the side of said dust separating member opposite from said inlet, a.
  • motor fan unit in said hollow member, means including a hand grasp element extending through said outer top wall for shaking said dust separating member.
  • a cover member movably secured to said top wall for covering said element, and means providing an air-tight seal between said cover member and said top wall when the former is closed, the space inside said cover member being in communication with the space between said top wall and under wall.
  • a vacuum cleaner an elongated casing open at the top and forming a dust receptacle, means forming an air and dust inlet at one end of said casing, a removable closure for said casing, said closure including an outer top wall and an under wall, said under wall being fornied with an opening adjacent said inlet, a dust separating member disposed across said opening, a hollow air tight member depending in air tight relationship from said under wall into said casing, said hollow. member being located at the side of said dust separating member opposite from said inlet.
  • a motor fan unit in said hollow member, and supporting means depending from said under wall in spaced relation to said hollow member and serving, together with said hollow member, to support said closure in an unright position when the latter is removed from said casing.
  • a casing having an inlet, a fan for producing flow of air through said inlet, a filter in said casing in the path of air flow between said inlet and said fan, a member for shaking said filter, said casing being formed with a ort communicating with the path of air fiow between said filter and said fan, and means including a valve for closing said port and. rendering said member inoperable to shake said filter, said means being manually operable for rendering said member operable to shake said filter and for opening said port to bypass said filter by providing for direct flow of ai through said port to said fan.v
  • a casing havingan inlet, a fan for producing flowof air through said inlet, a, filter in said casing in the path of air flow between said inlet and said fan, a manually operable member extending exteriorly of said casing for shaking said filter, said casing being formed with a port communicating with i the path or air flow between said filter and said fan, and a movable closure for closingsaid port and covering said member to render the latter inaccessible for manual operation, said closure being manually movable for rendering said member accessible and for opening said port to ,by-pass said filter by providing for direct n w of air through said port to said fan.
  • a casing having an inlet and an outlet, a filter in saidcasing between said inlet and said outlet, a fan for producing flow or air through said casing, a member for shaking said filter, and means including a valve shiftable between 'a position interrupting flow of air through said filter and rendering said member operable to shake said filter and a position permitting such flow and rendering said member inoperable to shake said filter- 'AXEL ALBERT FORSBEBG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
US440293A 1941-05-05 1942-04-24 Vacuum cleaner Expired - Lifetime US2372944A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE263946X 1941-05-05

Publications (1)

Publication Number Publication Date
US2372944A true US2372944A (en) 1945-04-03

Family

ID=20306539

Family Applications (1)

Application Number Title Priority Date Filing Date
US440293A Expired - Lifetime US2372944A (en) 1941-05-05 1942-04-24 Vacuum cleaner

Country Status (7)

Country Link
US (1) US2372944A (fr)
BE (1) BE470957A (fr)
CH (1) CH263946A (fr)
DE (1) DE740860C (fr)
FR (1) FR880548A (fr)
GB (1) GB554177A (fr)
NL (3) NL67846C (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447500A (en) * 1944-10-02 1948-08-24 Birtman Electric Co Tank type suction cleaner
US2458309A (en) * 1944-06-26 1949-01-04 Hoover Co Suction cleaner
US2500832A (en) * 1945-01-29 1950-03-14 James B Kirby Vacuum cleaner
US2503568A (en) * 1944-09-25 1950-04-11 Timm Aircraft Corp Vacuum cleaner
US2534280A (en) * 1946-07-02 1950-12-19 Electrolux Corp Vacuum cleaner
US2543342A (en) * 1945-08-21 1951-02-27 Timm Aircraft Corp Suction cleaner with switch circuit
US2543343A (en) * 1946-03-05 1951-02-27 Timm Aircraft Corp Suction cleaner control
US2564734A (en) * 1948-10-27 1951-08-21 Birtman Electric Co Vacuum cleaner
US2566153A (en) * 1945-04-26 1951-08-28 Hoover Co Suction cleaner
US2639002A (en) * 1946-03-25 1953-05-19 Interstate Aircraft And Engine Tank type suction cleaner
US2778447A (en) * 1953-10-14 1957-01-22 Lewyt Corp Vacuum cleaner assembly
US2916104A (en) * 1952-12-20 1959-12-08 Electrolux Ab Suction cleaner structure
US3055039A (en) * 1959-02-02 1962-09-25 Signal Mfg Co Cleaning apparatus
US5259087A (en) * 1991-12-27 1993-11-09 Loveless Michael L Ash vacuum
US5704956A (en) * 1996-02-26 1998-01-06 Loveless; Michael L. Filter cleaning system for an ash vacuum
ES2244294A1 (es) * 2002-12-31 2005-12-01 Samsung Gwangju Conjunto de filtro para un aparato aspirador.

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920337A (en) * 1956-02-24 1960-01-12 Gen Electric Blower-caddy dolly and vacuum cleaner
US2934164A (en) * 1957-09-11 1960-04-26 Amco Eng Blower system
CN106137034B (zh) * 2014-12-12 2019-06-07 江苏美的清洁电器股份有限公司 打灰装置和具有该打灰装置的吸尘器
CA2970571A1 (fr) 2014-12-12 2016-06-16 Jiangsu Midea Cleaning Appliances Co., Ltd. Dispositif d'agitation de poussiere et collecteur de poussiere l'utilisant
ES2619192T3 (es) 2015-01-20 2017-06-23 Eurofilters Holding N.V. Robot aspirador
DK3047783T3 (en) 2015-01-20 2017-10-23 Eurofilters Holding Nv VACUUM CLEANER ROBOT
ES2624496T3 (es) 2015-01-20 2017-07-14 Eurofilters Holding N.V. Aspiradora de piso
DK3047771T3 (en) 2015-01-20 2017-05-22 Eurofilters Holding Nv Vacuum Cleaner Robot
EP3047774B1 (fr) 2015-01-20 2018-04-25 Eurofilters Holding N.V. Aspirateur de sol
EP3047781B1 (fr) 2015-01-20 2019-08-28 Eurofilters N.V. Aspirateur-traîneau à activation autonome, procédé d'aspiration de poussières et utilisation d'un aspirateur-traîneau utilisable à activation autonome

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458309A (en) * 1944-06-26 1949-01-04 Hoover Co Suction cleaner
US2503568A (en) * 1944-09-25 1950-04-11 Timm Aircraft Corp Vacuum cleaner
US2447500A (en) * 1944-10-02 1948-08-24 Birtman Electric Co Tank type suction cleaner
US2500832A (en) * 1945-01-29 1950-03-14 James B Kirby Vacuum cleaner
US2566153A (en) * 1945-04-26 1951-08-28 Hoover Co Suction cleaner
US2543342A (en) * 1945-08-21 1951-02-27 Timm Aircraft Corp Suction cleaner with switch circuit
US2543343A (en) * 1946-03-05 1951-02-27 Timm Aircraft Corp Suction cleaner control
US2639002A (en) * 1946-03-25 1953-05-19 Interstate Aircraft And Engine Tank type suction cleaner
US2534280A (en) * 1946-07-02 1950-12-19 Electrolux Corp Vacuum cleaner
US2564734A (en) * 1948-10-27 1951-08-21 Birtman Electric Co Vacuum cleaner
US2916104A (en) * 1952-12-20 1959-12-08 Electrolux Ab Suction cleaner structure
US2778447A (en) * 1953-10-14 1957-01-22 Lewyt Corp Vacuum cleaner assembly
US3055039A (en) * 1959-02-02 1962-09-25 Signal Mfg Co Cleaning apparatus
US5259087A (en) * 1991-12-27 1993-11-09 Loveless Michael L Ash vacuum
US5704956A (en) * 1996-02-26 1998-01-06 Loveless; Michael L. Filter cleaning system for an ash vacuum
ES2244294A1 (es) * 2002-12-31 2005-12-01 Samsung Gwangju Conjunto de filtro para un aparato aspirador.

Also Published As

Publication number Publication date
GB554177A (en) 1943-06-23
CH263946A (de) 1949-09-30
FR880548A (fr) 1943-03-29
BE470957A (fr)
DE740860C (de) 1943-10-29
NL151715B (nl)
NL67846C (fr)
NL68900C (fr)

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