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US3694848A - Vacuum and pressure pickup device for home and commercial vacuum cleaners - Google Patents

Vacuum and pressure pickup device for home and commercial vacuum cleaners Download PDF

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Publication number
US3694848A
US3694848A US3694848DA US3694848A US 3694848 A US3694848 A US 3694848A US 3694848D A US3694848D A US 3694848DA US 3694848 A US3694848 A US 3694848A
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pressure
suction
vacuum
device
housing
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Frank Alcala
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Frank Alcala
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00Structural features of suction cleaners
    • A47L5/12Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/14Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum cleaning by blowing-off, also combined with suction cleaning
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details 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
    • A47L9/02Nozzles
    • A47L9/08Nozzles with means adapted for blowing

Abstract

An improved home and commercial vacuum cleaner employing pressure and vacuum functions for picking up dirt and lightweight articles from a rug surface.

Description

Unlted States Patent 11 1 3,694,848

Alcala 1 51 Oct. 3, 1972 [54] VACUUM AND PRESSURE PICKUP 868,901 10/ 1907 Williams ..15/345 X DEVICE FOR HOME AND 1,985,849 12/1934 Allen ..15/422 X COMMERCIAL VACUUM CLEANERS 1,965,614 7/1934 Sellers ..15/345 X 2,538,643 1/1951 Gregory ..15/383 X [721 Frank 6950 1,422,100 7/1922 Hoff ..15/383 x Carefree 8533' 1,936,369 1 1/1933 Riebel, Jr. et al ..15/402 [22] Wed: FOREIGN PATENTS OR APPLICATIONS [21] 167,076 2/1956 Australia .1 15/345 552,732 12/1956 Italy ..l5/346 [52] US. Cl. ..l5/346, 15/364, 15/383, 892,658 3/1962 Great Britain ..15/322 15/402 v [51] Int. Cl. ..A47l 5/14 Primary Examiner-Edward L. Roberts [58] Field of Search 15/345, 346, 363, 364, 367, Assistant Examiner-C. K. Moore 15/366, 402, 405, 415, 383 Att0rney-Warren F. B. Lindsley [56] References Cited [57] ABSTRACT UNITED STATES PATENTS An improved home and commercial vacuum cleaner employing pressure and vacuum functions for picking 3,268,942 8/1966 Rossnan ..15/346 up dirt and lightweight anicles'from a rug Surface 2,012,640 8/1935 Sh1pman ..l5/346 1,281,925 10/ 19 1 8 F arnsworth ..15/346 3 Claims, 7 Drawing Figures PATENTEDUET 3 I972 SHEET 1 0F 2 \mmmmk fl'vmvx 141.0440.

AT TORNEK PATENTEDnms I972 3.694.848

55.5 l' l lb- ,1]

INVENTOR. FTMNK HLCALA.

Midi-' ATTORNEK VACUUM AND PRESSURE PICKUP DEVICE FOR HOME AND-COMMERCIAL VACUUM CLEANERS BACKGROUND OF THE INVENTION This invention relates to an improved cleaner for home and commercial use of the vacuum cleaner type, and more particularly to an improved head or device for picking up articles such asdirt and the like from rug covered surfaces by a combination of pressure and vacuum functions.

DESCRIPTION OF THE PRIOR ART While it is known that various types of vacuum cleaning devices have been proposed and used for a variety of purposes, both domestic and industrial, there still remains a need for an efficient, inexpensive cleaner that will gather effectively litter of allsorts, dirt and dust from bare and carpeted floors and particularly from carpets of the shag or long, thick fabric type. The prior art vacuum cleaners do not have the ability to remove the dirt effectively from shag rugs since the fibers, if tangled, block the effects of the suction from reaching the base of the rug where the dirt gravitates.

Therefore, to improve on the prior art structures a new and improved mobile cleaner is provided which employs a jet nozzle arrangement in a suction hood of a pick up head so that the blasts of air are directed, substantially perpendicularly into the rug and to its base where the dirt and litter are located to dislodge it and move it toward the surface of the rug fibers where suction forces it directly into a collection bag or receptacle.

SUMMARY OF THE INVENTION In accordance with the invention claimed an improved vacuum cleaner for domestic and industrial use is provided which directs jets of air under pressure directly into the rug in such a manner that the dirt is moved upwardly from the base of the rug to aid the suction forces.

It is, therefore, one object of this invention to provide an improved cleaner of the vacuum cleaner type utilizing air under pressure to dislodge the dust, dirt and assorted litter.

Another object of this invention is to provide an improved vacuum cleaner in which jets of air are directed perpendicularly into the surface of the rug to utilize the full forces of the air under pressure to dislodge the litter.

A further object of this invention is to provide an improved vacuum cleaner wherein the suction forces in the suction hood of the cleaner substantially surround the jet nozzles except where the jets of air enter the rug.

A still further object of this invention, is to provide an improved cleaner in which a plurality of jets are arranged laterally of the direction of movement of the suction hood in the center of the housing and juxtapositioned to a comb for parting the fibers of the rug prior to receiving the jets of air.

A still further object of this invention is to provide a suction hood for a vacuum cleaner wherein a revolving comb and a fixedly mounted comb are positioned one on each side of a plurality of jets all arranged in the suction hood laterally of the direction of movement of the cleaner.

A still further object of this invention is to provide an improved vacuum cleaner employing a plurality of jets arranged substantially in the center of thev suction shroud and mounted on a pair of spaced runners for engaging the floor.

Further objects and advantages of the invention will become apparent as the following description proceeds and the features of novelty which characterize this invention will be pointed out with particularity in the claims annexed to and forming part of this specification.

BRIEF DESCRIPTION OF THE DRAWING The present invention may be more readily described by reference to the accompanying drawing in which:

FIG. 1 is a perspective view of a cleaning device embodying the invention;

FIG. 2 is an enlarged view partly broken away of the suction-pressure hood shown in FIG. 1;

FIG. 3 is a cross sectional view of FIG. 2 taken along the line 3-3;

FIG. 4 is a bottom partially broken away view of the suction-pressure hood shown in FIGS. 1-3

FIG. 5 is a modification of the suction-pressure hood shown in FIG. 2 employing a rotating comb;

FIG. 6 is a bottom view of the structure shown in FIG. 5; and

FIG. 7 is a further modification of the structure shown in FIGS. l-6 wherein a stationary comb is inserted in the housing of the pressure jets.

DESCRIPTION OF PREFERRED EMBODIMENT Referring more particularly to the drawing by characters of reference FIG. I discloses a carriage for moving over a surface for collecting dirt and the like and hereinafter referred to as a cleaning suction-pressure head 10 connected by a pair of inlet and outlet conduits or hoses 11 and 12 forming a wand 13 to a power driven cleaner 14. Cleaner 14 may comprise conventional suction and pressure creating means (not shown) in a wheel mounted canister 15.

Hose 11 is the suction duct having one end 16 connected to the previously mentioned suction creating means in the canister 15 and its other end 16' connected to a housing defining a cavity called a suction hood 17 of the suction-pressure head 10 and terminating in a port 18 shown in FIGS. 3 and 4.

The suction creating means in the canister may in clude a fan, a blower, or an air impelling means of one type or another driven by an electric motor (all not shown) contained in canister 15. It should be noted that the end of the suction hose ll terminating in the canister is adapted to be connected through a removable fitting to an air pervious, dirt impervious, air filtration and dirt storage bag in canister 15.

As shown in FIG. 1 the pressure hose 12 has one end 21 connected to a fitting 22 on canister 15 which may be connected to a housing surrounding the air pervious bag in the canister or to a separate source of air under pressure. The other end 21' of hose 12 is connected to the pressure jet nozzle device 20.

Ends 16' and 21' of hoses 11 and 12, respectively are connected to suction-pressure head 10 by means of pivotally mounted fittings 23 and 24 which can be moved laterally of the suction-pressure head 10 in the well known manner without losing suction or pressure in the head through leakage to atmosphere.

The wand 13 comprises a handle member 25 which together with rigid coverings 26 and 27 form an outer casing for the hoses 11 and 12 between the handle member 25 and the canister 15. In this manner the suction-pressure head may be readily moved across the surface to be cleaned. The suction-pressure head 10 as shown in FIGS. 1-4 may be mounted on skis or skids 28 and 29 which cause the suction-pressure head to move freely over the surface to be cleaned. It should be recognized that wheels may be used in place of the skids if so desired.

As shown in FIGS. 2, 3 and 4 the pressure jet nozzle device comprises a housing 30 extending across hood l7 laterally to the direction of movement of the suction-pressure head 10. Housing 30 is connected through an integrated coupling 31 to fitting 24 which is connected to pressure hose 12. Housing 30 is provided with a plurality of openings 32 which direct air under pressure perpendicularly into the surface to be cleaned. This is particularly important when cleaning shag rugs since the fibers of the rug are long and will distort or deflect off of it under air pressure directed laterally at the rug surface. The housing is also placed midway between the front and back of the hood 17 so that suction may be applied to the suction-pressure head 10 on both sides .of it so that air and dirt deflected off of the rug surface may be readily drawn into the suction hose 11.

FIGS. 5 and 6 illustrate a modification of the suctionpressure head 10 shown in FIGS. 1-4 wherein a power driven rotating comb 35 is arranged in the housing perpendicular to its direction of movement during a cleaning operation. The comb is driven by a belt 36 connected to an electric motor 37. Motor 37 is energized by electric power furnished to the motor through wires which may be threaded through one of the hoses 11 or 12 to canister 15.

As shown in FIGS. 5 and 6 the comb 35 comprises two rows of spacedly arranged teeth 38 on opposite sides of and extending longitudinally of a cylinder 39.

FIG. 7 illustrates a further modification of the structure shown in FIGS. l-6 wherein a stationary comb 40 is arranged to snap into the base of the pressure jet nozzle device 20 and comprises a row of teeth 41 extending laterally across the suction-pressure head 10. Each tooth 41 comprises an arm bent at an angle as shown,

so that it extends downwardly and rearwardly of the pressure jet nozzle device 20. The stationary comb parts the fibers of the rug so that the suction rearwardly of the pressure jet nozzle device 20 may easily draw the dirt and other litter from the base of the rug.

Although but a few embodiments of the present inwalls, inlet and outlet conduits connected to said cavity of said housing, I

one of said conduits being connected to a source of pressure and the other of said conduits being connected to a vacuum producing means,

said inlet conduit being conducted to a jet producing device arranged within the cavity of said housing laterally of the direction of movement of said carriage and spacedly arranged between the forward and rearward walls of the cavity,

said device defining a plurality of nozzles spacedly arranged along the length of the device for directing jets of air under pressure outwardly of said opening of said opening of said cavity,

said outlet conduit opening into said cavity so as to produce a vacuum around said nozzle device,

said jets .of air being directed substantially perpendicularly to said surface for blasting dirt from said surface into the space of said cavity under the influence of the vacuum of said outlet conduit,

a comb mounted on said jet producing device adjacent said nozzles, said comb comprising a plurality of teeth bent to extend at least partially along its length outwardly of said opening in the direction of movement of said carriage while said carriage is moving in one direction only.

2. The carriage set forth in claim 1 in'further combination with:

a rotatably mounted comb, said rotatably mounted comb being substantially parallelly arranged with said jet producing device within said cavity of said housing and comprising two rows of spacedly arranged teeth on opposite sides of a rotatably mounted cylinder and extending longitudinally thereof,

and means for rotating said cylinder.

3. The vacuum-pressure carriage set forth in claim 2 in further combination with a pair of spacedly arranged skids mounted on and extending perpendicular to the longitudinal axis of said housing over the sides of said housing defining the opening of said cavity and in the direction of movement of said carriage.

Claims (3)

1. A carriage for moving over surface for collecting dirt and the like comprising: a housing defining a cavity having an opening outward of the side of said housing juxtapositioned to said surface and having forward and rearward walls, inlet and outlet conduits connected to said cavity of said housing, one of said conduits being connected to a source of pressure and the other of said conduits being connected to a vacuum producing means, said inlet conduit being conducted to a jet producing device arranged within the cavity of said housing laterally of the direction of movement of said carriage and spacedly arranged between the forward and rearward walls of the cavity, said device defining a plurality of nozzles spacedly arranged along the length of the device for directing jets of air under pressure outwardly of said opening of said opening of said cavity, said outlet conduit opening into said cavity so as to produce a vacuum around said nozzle device, said jets of air being directed substantially perpendicularly to said surface for blasting dirt from said surface into the space of said cavity under the influence of the vacuum of said outlet conduit, a comb mounted on said jet producing device adjacent said nozzles, said comb comprising a plurality of teeth bent to extend at least partially along its length outwardly of said opening in the direction of movement of said carriage while said carriage is moving in one direction only.
2. The carriage set forth in claim 1 in further combination with: a rotatably mounted comb, said rotatably mounted comb being substantially parallelly arranged with said jet producing device within said cavity of said housing and comprising two rows of spacedly arranged teeth on opposite sides of a rotatably mounted cylinder and extending longitudinally thereof, and means for rotating said cylinder.
3. The vacuum-pressure carriage set forth in claim 2 in further combination with a pair of spacedly arranged skids mounted on and extending perpendicular to the longitudinal axis of said housing over the sides of said housing defining the opening of said cavity and in the direction of movement of said carriage.
US3694848A 1970-10-28 1970-10-28 Vacuum and pressure pickup device for home and commercial vacuum cleaners Expired - Lifetime US3694848A (en)

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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818540A (en) * 1973-01-12 1974-06-25 Health Mor Inc Combined adjustable shag rug-power nozzle cleaner construction
US3825972A (en) * 1973-04-23 1974-07-30 Scott & Fetzer Co Shag rug fluffer
US3828386A (en) * 1971-09-07 1974-08-13 E Roth Rug care implement
US3911530A (en) * 1973-02-05 1975-10-14 James S Kalfsbeek System and method for removing feathers from ducks and other fowl
US4011792A (en) * 1975-11-07 1977-03-15 Davis Wallace J Rotary tool exhaust hood
US4300261A (en) * 1980-08-15 1981-11-17 Robert E. Robbins Vacuum cleaning apparatus with compressed air means
US4333205A (en) * 1979-11-14 1982-06-08 Robert E. Robbins Vacuum cleaner with soil agitator and compressed air means
US4363157A (en) * 1981-05-11 1982-12-14 Minnesota Mining And Manufacturing Company Buffing pad cleaning tool
US4594749A (en) * 1984-11-13 1986-06-17 Waterman Dale G Vacuum cleaner with air jet assist
DE3704701A1 (en) * 1987-02-14 1988-08-25 Bongard Erich Andreas Floor-cleaning device
US4884315A (en) * 1987-12-10 1989-12-05 Ehnert Richard E Vacuum cleaner having circuitous flow
DE3829569A1 (en) * 1987-11-17 1990-03-08 Alfred Pfeiffer Vacuum cleaner nozzle for vacuum cleaners with returned exhaust air
US5361453A (en) * 1992-09-11 1994-11-08 Gerber Garment Technology, Inc. Bristle bed cleaner for sheet material cutting machine
US5454137A (en) * 1994-07-11 1995-10-03 Reeves; James A. Vacuum hose assembly
US5457848A (en) * 1992-10-26 1995-10-17 Tokyo Cosmos Electric Co. Ltd. Recirculating type cleaner
US5613269A (en) * 1992-10-26 1997-03-25 Miwa Science Laboratory Inc. Recirculating type cleaner
US5647092A (en) * 1992-10-26 1997-07-15 Miwa Science Laboratory Inc. Recirculating type cleaner
US6032327A (en) * 1998-01-27 2000-03-07 Sharp Kabushiki Kaisha Electric vacuum cleaner
EP0985372A1 (en) * 1997-12-24 2000-03-15 Toshiba Tec Kabushiki Kaisha Vacuum-cleaner
US6108863A (en) * 1999-06-10 2000-08-29 Lin; Yao-Chang Vacuum cleaner with dual blowing/suction function
WO2000069320A1 (en) * 1999-05-17 2000-11-23 David Deng Vacuum cleaner apparatus and return system for use with the same
US6237188B1 (en) 1997-12-26 2001-05-29 Toshiba Tec Kabushiki Kaisha Suction port body for vacuum-cleaner and vacuum-cleaner having the same
US6460217B2 (en) * 2000-01-20 2002-10-08 Sanyo Electric Co., Ltd. Electric cleaning device
US6517640B2 (en) 2000-05-15 2003-02-11 David Deng Vacuum cleaner apparatus and return system for use with the same
US20030126715A1 (en) * 2002-01-09 2003-07-10 Krymsky Mark D. Closed loop vacuum cleaner
US20030182752A1 (en) * 2002-03-29 2003-10-02 Hmi Industries, Inc. A Delaware Corporation Floating nozzle
US6725500B2 (en) 2001-05-03 2004-04-27 Vortex, L.L.C. Air recirculating surface cleaning device
US6732404B2 (en) 1999-12-15 2004-05-11 Sanyo Electric Co., Ltd. Electric vacuum cleaner having exhaust air return feature
US20040134024A1 (en) * 2001-05-03 2004-07-15 Allen Donavan J. Air recirculating surface cleaning device
US20040177473A1 (en) * 2003-03-11 2004-09-16 Abdallah Sleiman A. Air exhaust system for a cleaning machine
US20050217065A1 (en) * 2001-05-03 2005-10-06 Allen Donavan J Air recirculating surface cleaning device
US20070180650A1 (en) * 2006-02-08 2007-08-09 Lctank Llc Apparatus and method for using a compressed air flow and a vacuum to clean surfaces
US7458130B1 (en) 2004-03-10 2008-12-02 Krymsky Mark D Closed loop vacuum cleaner
US20160095482A1 (en) * 2014-10-03 2016-04-07 Anthony Weiburg Vacuum System and Device
US9386894B1 (en) 2015-08-17 2016-07-12 Patrick Kerigan Vacuum cleaner with edge blower feature

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US868901A (en) * 1905-12-28 1907-10-22 Edward Thompson Williams Carpet-cleaner.
US1281925A (en) * 1918-01-21 1918-10-15 William W Farnsworth Renovator.
US1422100A (en) * 1919-03-05 1922-07-11 Electric Vacuum Cleaner Co Beater for suction cleaners
US1936369A (en) * 1933-01-13 1933-11-21 Air Way Electric Appl Corp Suction cleaner floor tool
US1965614A (en) * 1931-04-27 1934-07-10 Hoover Co Suction cleaner
US1985849A (en) * 1931-06-19 1934-12-25 B F Sturtevant Co Vacuum cleaner
US2012640A (en) * 1931-11-25 1935-08-27 Shipman Bennet Carroll Suction cleaner
US2538643A (en) * 1946-06-06 1951-01-16 Horace G Gregory Leaf gathering and disposal machine
GB892658A (en) * 1959-05-16 1962-03-28 Inst Produktudvikling Improvements in and relating to cleaning machines for wet cleaning of floors, stairs, walls, window panes and the like
US3268942A (en) * 1966-08-30 Suction cleaning nozzle

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268942A (en) * 1966-08-30 Suction cleaning nozzle
US868901A (en) * 1905-12-28 1907-10-22 Edward Thompson Williams Carpet-cleaner.
US1281925A (en) * 1918-01-21 1918-10-15 William W Farnsworth Renovator.
US1422100A (en) * 1919-03-05 1922-07-11 Electric Vacuum Cleaner Co Beater for suction cleaners
US1965614A (en) * 1931-04-27 1934-07-10 Hoover Co Suction cleaner
US1985849A (en) * 1931-06-19 1934-12-25 B F Sturtevant Co Vacuum cleaner
US2012640A (en) * 1931-11-25 1935-08-27 Shipman Bennet Carroll Suction cleaner
US1936369A (en) * 1933-01-13 1933-11-21 Air Way Electric Appl Corp Suction cleaner floor tool
US2538643A (en) * 1946-06-06 1951-01-16 Horace G Gregory Leaf gathering and disposal machine
GB892658A (en) * 1959-05-16 1962-03-28 Inst Produktudvikling Improvements in and relating to cleaning machines for wet cleaning of floors, stairs, walls, window panes and the like

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828386A (en) * 1971-09-07 1974-08-13 E Roth Rug care implement
US3818540A (en) * 1973-01-12 1974-06-25 Health Mor Inc Combined adjustable shag rug-power nozzle cleaner construction
US3911530A (en) * 1973-02-05 1975-10-14 James S Kalfsbeek System and method for removing feathers from ducks and other fowl
US3825972A (en) * 1973-04-23 1974-07-30 Scott & Fetzer Co Shag rug fluffer
US4011792A (en) * 1975-11-07 1977-03-15 Davis Wallace J Rotary tool exhaust hood
US4333205A (en) * 1979-11-14 1982-06-08 Robert E. Robbins Vacuum cleaner with soil agitator and compressed air means
US4300261A (en) * 1980-08-15 1981-11-17 Robert E. Robbins Vacuum cleaning apparatus with compressed air means
US4363157A (en) * 1981-05-11 1982-12-14 Minnesota Mining And Manufacturing Company Buffing pad cleaning tool
US4594749A (en) * 1984-11-13 1986-06-17 Waterman Dale G Vacuum cleaner with air jet assist
DE3704701A1 (en) * 1987-02-14 1988-08-25 Bongard Erich Andreas Floor-cleaning device
DE3829569A1 (en) * 1987-11-17 1990-03-08 Alfred Pfeiffer Vacuum cleaner nozzle for vacuum cleaners with returned exhaust air
US4884315A (en) * 1987-12-10 1989-12-05 Ehnert Richard E Vacuum cleaner having circuitous flow
US5361453A (en) * 1992-09-11 1994-11-08 Gerber Garment Technology, Inc. Bristle bed cleaner for sheet material cutting machine
US5457848A (en) * 1992-10-26 1995-10-17 Tokyo Cosmos Electric Co. Ltd. Recirculating type cleaner
US5613269A (en) * 1992-10-26 1997-03-25 Miwa Science Laboratory Inc. Recirculating type cleaner
US5647092A (en) * 1992-10-26 1997-07-15 Miwa Science Laboratory Inc. Recirculating type cleaner
US5454137A (en) * 1994-07-11 1995-10-03 Reeves; James A. Vacuum hose assembly
EP0985372A4 (en) * 1997-12-24 2004-06-02 Toshiba Tec Kk Vacuum-cleaner
EP0985372A1 (en) * 1997-12-24 2000-03-15 Toshiba Tec Kabushiki Kaisha Vacuum-cleaner
US6324722B1 (en) * 1997-12-24 2001-12-04 Toshiba Tec Kabushiki Kaisha Vacuum-cleaner with recirculation of exhaust air
US6237188B1 (en) 1997-12-26 2001-05-29 Toshiba Tec Kabushiki Kaisha Suction port body for vacuum-cleaner and vacuum-cleaner having the same
US6032327A (en) * 1998-01-27 2000-03-07 Sharp Kabushiki Kaisha Electric vacuum cleaner
US6245159B1 (en) 1999-05-17 2001-06-12 David Deng Vacuum cleaner apparatus and return system for use with the same
WO2000069320A1 (en) * 1999-05-17 2000-11-23 David Deng Vacuum cleaner apparatus and return system for use with the same
US6108863A (en) * 1999-06-10 2000-08-29 Lin; Yao-Chang Vacuum cleaner with dual blowing/suction function
US6732404B2 (en) 1999-12-15 2004-05-11 Sanyo Electric Co., Ltd. Electric vacuum cleaner having exhaust air return feature
US6460217B2 (en) * 2000-01-20 2002-10-08 Sanyo Electric Co., Ltd. Electric cleaning device
US6517640B2 (en) 2000-05-15 2003-02-11 David Deng Vacuum cleaner apparatus and return system for use with the same
US20080209667A1 (en) * 2001-05-03 2008-09-04 Allen Donavan J Air Recirculating Surface Cleaning Device
US6725500B2 (en) 2001-05-03 2004-04-27 Vortex, L.L.C. Air recirculating surface cleaning device
US20050217065A1 (en) * 2001-05-03 2005-10-06 Allen Donavan J Air recirculating surface cleaning device
US20040134024A1 (en) * 2001-05-03 2004-07-15 Allen Donavan J. Air recirculating surface cleaning device
US7788765B2 (en) 2001-05-03 2010-09-07 Allen Donavan J Air recirculating surface cleaning device
US20030126715A1 (en) * 2002-01-09 2003-07-10 Krymsky Mark D. Closed loop vacuum cleaner
US6799351B2 (en) 2002-03-29 2004-10-05 Hmi Industries, Inc. Floating nozzle
US20030182752A1 (en) * 2002-03-29 2003-10-02 Hmi Industries, Inc. A Delaware Corporation Floating nozzle
US7356875B2 (en) * 2003-03-11 2008-04-15 Healthy Gain Investments Ltd Air exhaust system for a cleaning machine
US20040177473A1 (en) * 2003-03-11 2004-09-16 Abdallah Sleiman A. Air exhaust system for a cleaning machine
US7458130B1 (en) 2004-03-10 2008-12-02 Krymsky Mark D Closed loop vacuum cleaner
US20070180650A1 (en) * 2006-02-08 2007-08-09 Lctank Llc Apparatus and method for using a compressed air flow and a vacuum to clean surfaces
US20160095482A1 (en) * 2014-10-03 2016-04-07 Anthony Weiburg Vacuum System and Device
US9801510B2 (en) * 2014-10-03 2017-10-31 Anthony Weiburg Vacuum system and device
US9386894B1 (en) 2015-08-17 2016-07-12 Patrick Kerigan Vacuum cleaner with edge blower feature

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