US2930069A - Turbine driven floor tool - Google Patents

Turbine driven floor tool Download PDF

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Publication number
US2930069A
US2930069A US668680A US66868057A US2930069A US 2930069 A US2930069 A US 2930069A US 668680 A US668680 A US 668680A US 66868057 A US66868057 A US 66868057A US 2930069 A US2930069 A US 2930069A
Authority
US
United States
Prior art keywords
inlet
nozzle
air
suction
wall
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
US668680A
Other languages
English (en)
Inventor
John J Kowalewski
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
Priority to NL229112D priority Critical patent/NL229112A/xx
Priority to NL107127D priority patent/NL107127C/xx
Application filed by Electrolux Corp filed Critical Electrolux Corp
Priority to US668680A priority patent/US2930069A/en
Priority to GB19605/58A priority patent/GB826119A/en
Priority to DEE16046A priority patent/DE1148045B/de
Priority to FR1207569D priority patent/FR1207569A/fr
Priority to CH360180D priority patent/CH360180A/de
Application granted granted Critical
Publication of US2930069A publication Critical patent/US2930069A/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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0405—Driving means for the brushes or agitators
    • A47L9/0416—Driving means for the brushes or agitators driven by fluid pressure, e.g. by means of an air turbine
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/20—Floor surfacing or polishing machines combined with vacuum cleaning devices
    • A47L11/204—Floor surfacing or polishing machines combined with vacuum cleaning devices having combined drive for brushes and for vacuum cleaning
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/32—Carpet-sweepers
    • A47L11/325—Shampoo devices for carpet-sweepers
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4041—Roll shaped surface treating tools
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4063—Driving means; Transmission means therefor
    • A47L11/4069—Driving or transmission means for the cleaning tools
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4094—Accessories to be used in combination with conventional vacuum-cleaning devices
    • 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0427—Gearing or transmission means therefor
    • A47L9/0433—Toothed gearings

Definitions

  • the air motor is arranged in parallel with thecleaning inlet, but valve means are provided for varying the resistance to flow through the latter so that the distribution of air flow between the air motor and the cleaning inlet may be .varied.
  • This valve means is preferably shifted in response to a change in the direction of movement of the nozzle over thesurface being cleaned.
  • one wall of the suction cleaning inlet is pivoted so that the width of this opening is greater during movement of the nozzle in one direction than it is during movement in the opposite direction.
  • the vertical component .of the pushing force applied to the handle or wandisin a downward direction and therefore adds to the weightof the nozzle. Consequently, it is advantageous to reduce the size of the cleaning inlet during forward motion, inasmuch as this reduces the area of the carpet or rug subject tosuction and therefore reduces the force resulting from this suction .which tends to pull the nozzle downwardly against the carpet.
  • the rotary brush is disposed substantially entirely outside of :the region of low pressure sexisting within the nozzle. (3onsequently, the .rugflor carpet immediately undernea'ththe rotary brush has no tendency .to be sucked up. Different carpets, chiefly depending upon the nature of the backing, are lifted .from the :floor under the .influen'cenf suction different distances and hence it is:not possibleztorpropeily allow for this diiferentlifting-if the chamber in which the brush rotates issubjeetto suction.
  • Fig. 1 is a top viewofa nozzle in accordance with a preferred embodiment 'of'my invention and-is taken on'the line -1-1 of Fig. 2;
  • Fig. 2 is a cross-sectional view taken onthe line of Fig. 1;
  • Fig. 3 is a:-bottom-view of the nozzle shown in th'e preceding figures, but'with a platem'ember removed "and;
  • Fig. 4 is -a cross-sectional'view taken "on the line'M' of Pig. 3. V
  • reference character'10 designates a body member, preferably intheform of adie casting. This member is formed with an exhaust "open ing at the rear in whichan elbow coupling 12 is mounted. by means of-a swivel'connection'14. A'v'ertical -wall 16 of the body member forms the rear boundary of asnction cleaning inlet 1-8.
  • this passageway has an opening 34 through thewalhlfi into the space Stland an opening'36-.througharear wall- 38 of the body.
  • the pivoted wa'llZti acts as a valvefor varying the resistanceto flow through the path of .flow from inlet 18 to the elbowlll. v a
  • the lower end of shaft 42 carries a worm 52 which meshes with a worm gear 54 mounted on one end of a shaft 56 rotatably mounted in body member 10.
  • the other end of this shaft carries a pinion 58 which meshes with an idler gear 60 which in turn drives a pinion 62 mounted on the end of a shaft 64 carrying rows of brush bristles 66, the shaft and bristles together constituting a rotary brush.
  • 'Ihe gears 58, 60 and 62 are disposed in a pocket 67 formed in one end of body 10.
  • This brush is enclosed within a brush chamber 68, the pivoted wall 20 constituting the rear wall of this chamber. .
  • the forward wall 70 of the brush chamber terminates .well above the surface being cleaned so that the interior of the chamber is under substantially atmospheric pres sure.
  • the brush is rotated in the direction of the arrow 72, that is with the lower part of the brush moving to- .wards the inlet 18.
  • a plate member 74 is secured to the lower part of the body so as to constitute a gliding surface for supporting the nozzle on the rug or carpet and also a closure for enclosing the different elements of the gear drive between the shaft 42 and the shaft 64.
  • the stops 27 for limiting forward movement of wall 20 conveniently may be formed as part of plate 74.
  • the air drawn in through the opening 18 is drawn through the pile of the rug and removes the dirt therefrom which is carried into the opening 18 along with the dirt dislodged by the rotary brush.
  • This dirtladened air passes through the opening 34 into the passageway 32 and thence through the .opening 36 to the elbow 12, as is shown by the arrows 78. Consequently, no dirty air passes through the turbine.
  • the fingers "28 contacting the rug pivot the wall 20 to the position shown in Fig. 4, thus substantially reducing the area of the cleaning inlet 18 and hence materially increasing the resistance to flow therethrough.
  • the decrease in the area of the inlet 18 during forward movement of the nozzle is also advantageous in that a smaller area of the rug is subject to suction and hence there is less resistance to movement of the nozzle.
  • the vertical component of the pushing force applied to the nozzle is directed downwardly, thus tending to increase the resistance to movement over the rug and hence this increase is more or less counteracted by the decrease'in downward force resulting from the reduction in size of the inlet opening.
  • the springs 26 and the fingers 28 together move the pivoted wall 20 to its forward position, as shown in Fig. 2, where the opening 18 is of maximum size. This reduces the resistance of flow of air through this inlet and consequently the rate of flow through the inlet 18 is increased, while the flow through the turbine is decreased and hence under these conditions more air is available for removing dirt from the rug and less is r 4 available for driving the turbine.
  • the springs 26 are desirable as they aid in overcoming the suction force which, when the size of inlet 18 is small, has a greater tendency to hold wall 20 in its rearward position than when the inlet is large.
  • the brush chamber 68 is disposed entirely outside the region of low pressure, there is no tendency for the rug directly underneath the brush to be lifted. Consequently, the brush may be so adjusted with respect to the bottom surface of plate 74 that the ends of the bristles 66 have the proper contact with the upper surface of the rug or carpet.
  • This preferably is such that the bristles touch the surface rather lightly inasmuch as this gives a beneficial whisking effect which removes surface dirt more effectively than a heavier contact which causes the bristles to flex so that the sides, rather than the ends of the bristles, are in contact with the rug.
  • lighter contact results in much less wear to both the rug and the bristles. This light brushing also aids in brushing up matted down nap, which is a problem with some synthetic carpets and rugs.
  • a vacuum cleaner nozzle a body formed with a suction cleaning inlet communicating with an outlet connectable with a source of suction for producing flow of air, a surface agitating member carried by said body, an air motor for driving said agitating member having an air inlet separate from said suction cleaning inlet and having a discharge connected to said outlet, valve means shiftable for varying the distribution of air flow between said suction cleaning inlet and said air motor, and means frictionally engaging a surface being cleaned for shifting said valve in response to a change in direction of movement of said nozzle over said surface.
  • a body formed with a suction cleaning inlet communicating with an outlet connectable with a source of suction for producing flow of air, a surface agitating member carried by said body, an air motor for driving said agitating member having an air inlet separate from said suction cleaning inlet and having a discharge connected to said outlet, and valve means shiftable in response to a change in direction of movement of said-nozzle over a surface being cleaned to change the size of said suction cleaning inlet for varying the distribution of air flow between said suction cleaning inlet and said air motor.
  • a body formed with a suction cleaning inlet communicating with an outlet connectable with a source of suction for producing flow of air, a surface agitating member carried by said body, an air motor for driving said agitating member having an air inlet separate from said suction cleaning inlet and having a discharge connected to said outlet, valve means shiftable to one position to increase the flow of air through said air motor and to decrease the flow through said cleaning inlet and shiftable to another position to decrease the flow through said air motor and increase the flow through said cleaning inlet, and means friction ally engaging a surface being cleaned for shifting said valve between said positions in response to changes in direction of movement of said nozzle over said surface.
  • a body formed with a suction cleaning inlet communicating with an outlet eonnectable with a source of suction for producing flow of air, a surface agitating member carried by said body, an air motor for driving said agitating member having an air inlet separate from said suction cleaning inlet and having a discharge connected to said outlet, valve means shiftable to a first position to increase the resistance to flow of through the path of 19W included between said suction cleaning inlet and said outlet and shiftable to a second position to decrease the resistance to How through said path, and means frictionally engaging a surface being cleaned for shifting the valve to said first position upon forward movement of the nozzle and for shifting said valve to said second position upon rearward movement of said nozzle.
  • a body formed with a suction cleaning inlet communicating with an outlet connectable with a source of suction for producing flow of air, a surface agitating member carried by said body, an air motor for driving said agitating member having an air inlet separate from said suction cleaning inlet and having a discharge connected to said outlet, and valve means shiftable in response to a change in direction of movement of said nozzle over a surface being cleaned to decrease the size of said suction cleaning inlet during forward movement of said nozzle and to increase the size of said suction cleaning inlet during rearward movement of said nozzle.
  • a body formed with an outlet communicating with an elongated suction cleaning inlet bounded on one side by a fixed wall and on the opposite side by a pivotal wall, the latter being pivotal to vary the area of said inlet, a surface agitating member carried by said body, an air motor for driving said agi tating member having an inlet separated from said suction cleaning inlet and having a discharge connected to said outlet, and means contacting the surface being cleaned for pivoting said pivotal wall upon a reversal in the direction of movement of said nozzle with respect to said surface.
  • a vacuum cleaner nozzle 21 body formed with an inlet bounded on one side by a fixed wall and on the opposite side by a pivotal wall, the latter being pivotal 7 means during movement of said nozzle in one direction with respect to said surface.
  • a body formed with an outlet communicating with an elongated suction cleaning inlet bounded by a fixed rear wall and a pivotal front wall, the latter being pivotal between limits to vary the area of said inlet, resilient means urging said pivotal wall away from said fixed wall, a surface agitating member carried by said body, an air motor for driving said 'agitating member having an inlet separate from said suction cleaning inlet and having a discharge connected to said outlet, and means contacting the surface being cleaned for pivoting said pivotal wall towards said fixed wall during forward movement of said nozzle with respect to said surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
US668680A 1957-06-28 1957-06-28 Turbine driven floor tool Expired - Lifetime US2930069A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL229112D NL229112A (sv) 1957-06-28
NL107127D NL107127C (sv) 1957-06-28
US668680A US2930069A (en) 1957-06-28 1957-06-28 Turbine driven floor tool
GB19605/58A GB826119A (en) 1957-06-28 1958-06-19 Turbine driven floor tool for vacuum cleaners
DEE16046A DE1148045B (de) 1957-06-28 1958-06-25 Staubsaugerduese
FR1207569D FR1207569A (fr) 1957-06-28 1958-06-26 Appareil à nettoyer les parquets actionné par une turbine
CH360180D CH360180A (de) 1957-06-28 1958-06-28 Staubsaugerdüse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US668680A US2930069A (en) 1957-06-28 1957-06-28 Turbine driven floor tool

Publications (1)

Publication Number Publication Date
US2930069A true US2930069A (en) 1960-03-29

Family

ID=24683325

Family Applications (1)

Application Number Title Priority Date Filing Date
US668680A Expired - Lifetime US2930069A (en) 1957-06-28 1957-06-28 Turbine driven floor tool

Country Status (6)

Country Link
US (1) US2930069A (sv)
CH (1) CH360180A (sv)
DE (1) DE1148045B (sv)
FR (1) FR1207569A (sv)
GB (1) GB826119A (sv)
NL (2) NL229112A (sv)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071799A (en) * 1960-07-11 1963-01-08 Sunbeam Corp Cleaning attachment
US4837888A (en) * 1986-06-26 1989-06-13 Siegfried Maier Suction nozzle for a vacuum cleaning device
US5054156A (en) * 1988-04-20 1991-10-08 Hitachi, Ltd. Suction nozzle with rotary brush for vacuum cleaner
US5101534A (en) * 1989-04-17 1992-04-07 Hitachi, Ltd. Suction nozzle with rotary brush for vacuum cleaner
US5263860A (en) * 1992-07-27 1993-11-23 James Shen Aseptic hose connector and cap
US5443362A (en) * 1994-03-16 1995-08-22 The Hoover Company Air turbine
US5493752A (en) * 1994-01-14 1996-02-27 The Hoover Company Upright carpet and upholstery extractor
US5547725A (en) * 1994-02-25 1996-08-20 Tesa Tape Inc. Production of a novel sculptured strip of plastic foam
US5860188A (en) * 1995-08-11 1999-01-19 The Hoover Company Carpet extractor
US6099661A (en) * 1999-06-01 2000-08-08 Fantom Technologies Inc. Method and apparatus for increasing the air flow into a vacuum cleaner head
US20100088835A1 (en) * 2008-10-10 2010-04-15 Crouch James T Worm drive assembly for agitator
US20130139350A1 (en) * 2011-11-24 2013-06-06 G.B.D. Corp. Turbo brush

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3308294A1 (de) * 1983-03-09 1984-09-13 Miele & Cie GmbH & Co, 4830 Gütersloh Staubsaugermundstueck mit gleitsohle und rotierender buerstenwalze
DE8405468U1 (de) * 1984-02-23 1984-05-24 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal Vorsatzduese fuer staubsauger
SE8903427L (sv) * 1989-10-18 1991-04-19 Vest Nova Ab Staedapparat
DE4105012C2 (de) * 1991-02-19 1994-09-29 Fedag Romanshorn Fa Staubsaugermundstück
KR100528015B1 (ko) * 2003-12-16 2005-11-15 광동정밀 주식회사 진공청소기의 흡입헤드
KR100667875B1 (ko) 2005-09-30 2007-01-16 삼성광주전자 주식회사 걸레가 부착된 진공청소기의 흡입브러시
US11382477B2 (en) 2017-12-18 2022-07-12 Techtronic Floor Care Technology Limited Surface cleaning device with automated control
EP3987994B1 (en) 2017-12-18 2024-07-10 Techtronic Floor Care Technology Limited Surface cleaning device with triggerless fluid distribution mechanisam

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US983988A (en) * 1906-04-17 1911-02-14 Charles B Foster Pneumatic cleaner.
US1323925A (en) * 1919-12-02 Vacuum cleaning device
US2100089A (en) * 1935-05-23 1937-11-23 Hoover Co Suction cleaner
US2107571A (en) * 1931-01-19 1938-02-08 James B Kirby Suction cleaner
US2178003A (en) * 1931-04-22 1939-10-31 Hoover Co Suction cleaner
US2203650A (en) * 1937-01-26 1940-06-04 Electrolux Corp Suction nozzle
US2659925A (en) * 1948-06-18 1953-11-24 Delos R Wood Vacuum floor tool

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309877C (sv) *
US2109621A (en) * 1931-07-20 1938-03-01 James B Kirby Suction cleaner

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1323925A (en) * 1919-12-02 Vacuum cleaning device
US983988A (en) * 1906-04-17 1911-02-14 Charles B Foster Pneumatic cleaner.
US2107571A (en) * 1931-01-19 1938-02-08 James B Kirby Suction cleaner
US2178003A (en) * 1931-04-22 1939-10-31 Hoover Co Suction cleaner
US2100089A (en) * 1935-05-23 1937-11-23 Hoover Co Suction cleaner
US2203650A (en) * 1937-01-26 1940-06-04 Electrolux Corp Suction nozzle
US2659925A (en) * 1948-06-18 1953-11-24 Delos R Wood Vacuum floor tool

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071799A (en) * 1960-07-11 1963-01-08 Sunbeam Corp Cleaning attachment
US4837888A (en) * 1986-06-26 1989-06-13 Siegfried Maier Suction nozzle for a vacuum cleaning device
US5054156A (en) * 1988-04-20 1991-10-08 Hitachi, Ltd. Suction nozzle with rotary brush for vacuum cleaner
US5101534A (en) * 1989-04-17 1992-04-07 Hitachi, Ltd. Suction nozzle with rotary brush for vacuum cleaner
US5263860A (en) * 1992-07-27 1993-11-23 James Shen Aseptic hose connector and cap
US5493752A (en) * 1994-01-14 1996-02-27 The Hoover Company Upright carpet and upholstery extractor
US5615448A (en) * 1994-01-14 1997-04-01 The Hoover Company Convertible upright carpet extractor
US5547725A (en) * 1994-02-25 1996-08-20 Tesa Tape Inc. Production of a novel sculptured strip of plastic foam
US5443362A (en) * 1994-03-16 1995-08-22 The Hoover Company Air turbine
US5860188A (en) * 1995-08-11 1999-01-19 The Hoover Company Carpet extractor
US6099661A (en) * 1999-06-01 2000-08-08 Fantom Technologies Inc. Method and apparatus for increasing the air flow into a vacuum cleaner head
US20100088835A1 (en) * 2008-10-10 2010-04-15 Crouch James T Worm drive assembly for agitator
US20130139350A1 (en) * 2011-11-24 2013-06-06 G.B.D. Corp. Turbo brush
US9801513B2 (en) * 2011-11-24 2017-10-31 Omachron Intellectual Property Inc. Turbo brush

Also Published As

Publication number Publication date
NL107127C (sv)
FR1207569A (fr) 1960-02-17
GB826119A (en) 1959-12-23
DE1148045B (de) 1963-05-02
NL229112A (sv)
CH360180A (de) 1962-02-15

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