Closed Circuit Systems, I.e., Air Recirculating Patents (Class 15/346)
  • Patent number: 10321794
    Abstract: An upright surface cleaning apparatus comprises a surface cleaning and an upright section moveably mounted to the surface cleaning head between a generally upright position and a rearwardly inclined in use position. The upright section comprising a cleaning unit comprising a carry handle wherein the carry handle extends in a direction transverse to the central longitudinal axis of the surface cleaning head and wherein the carry handle has a hand grip portion that has a length in the transverse direction that is greater than a depth of the cleaning unit in a direction of the central longitudinal axis.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: June 18, 2019
    Assignee: Omachron Intellectual Property Inc.
    Inventors: Wayne Ernest Conrad, Nina Conrad, Dave Petersen
  • Patent number: 10258912
    Abstract: Highly efficient particulate collectors, such as for dust and street debris collected by a mobile street cleaning vehicle, with very low pressure loss are disclosed. One embodiment uses a specially contoured passage to separate the solid particles from particulate-laden gas stream by rapid directional change at a throat region. By using the Venturi effect at the accelerating zone communicating with a gas return channel from the particulate retaining chamber, a small amount of the gas will be recirculated from the deposit zone to help move and retain the separated particles in a confined collection receptacle.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: April 16, 2019
    Assignee: FEDERAL SIGNAL CORPORATION
    Inventor: Xiaolun Huang
  • Patent number: 10231586
    Abstract: A vacuum cleaner comprising: a body defining an air inlet, an air outlet, and a passageway extending therebetween; an electrostatic dust filter for removing dust from air as it passes through the passageway; and an air pump for drawing air into the air inlet and through the passageway to the air outlet; wherein the electrostatic dust filter comprises an electrode arrangement configured to kill microorganisms present in air passing through the passageway by exposing air to a voltage in excess of a threshold voltage.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: March 19, 2019
    Assignee: DEREGALLERA HOLDINGS LTD
    Inventor: Martin Hugh Boughtwood
  • Patent number: 10092156
    Abstract: A grout cleaning assembly includes a housing that has a handle portion and a suction portion. A scrubbing unit is rotatably attached to the housing and the scrubbing unit is positioned on the suction portion. Thus, the scrubbing unit scrubs a grout from a support surface. A first port is coupled to the handle portion. The first port may be fluidly coupled to a fluid source thereby facilitating the first port to directing a fluid onto the scrubbing unit. A second port is coupled to the handle portion. The second port may be fluidly coupled to a vacuum thereby facilitating the second port to suctionally urge the fluid and the grout into the vacuum when the scrubbing unit scrubs the grout from the support surface.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: October 9, 2018
    Inventor: Michael Bravo
  • Patent number: 9801510
    Abstract: A vacuum producing suction and air blowing simultaneously at a same surface of the device, is disclosed here in. A pump and compressor work simultaneously to both blow and suck air through a dual-line hose. A pressure gradient is created between the surface of the device and a surface being cleaned, due to high pressure being created by the air blowing, and low pressure being created by the air sucking. This causes dust, dirt, and the like to be pulled from the surface being cleaned and sucked in a suction portal, and into a suction line of the dual-line hose. This can be accomplished with a central vacuum system or standalone vacuum.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: October 31, 2017
    Inventors: Anthony Weiburg, Janet Weiburg
  • Patent number: 9686912
    Abstract: A lawn mower includes a mower deck including a blade rotationally driven to cut grass and generate an air flow to feed the cut grass. A cutting chamber houses the blade. An ejection outlet is open to the cutting chamber and ejects the cut grass. A grass collection container collects the cut grass ejected from the ejection outlet. An air chamber is provided in a vicinity of the cutting chamber and receives the air flow generated by rotation of the blade through the grass collection container. A first passage connects the ejection outlet and the grass collection container. A second passage connects the grass collection container and the air chamber. The air flow supplied from the grass collection container to the air chamber through the second passage is supplied to the cutting chamber.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: June 27, 2017
    Assignee: KUBOTA CORPORATION
    Inventors: Hirokazu Ito, Kazuo Koike
  • Patent number: 9322140
    Abstract: An apparatus comprises a main hopper having a surface cleaning configuration and a sander-salter configuration. In the surface cleaning configuration, the main hopper has a debris-laden airflow ingress, an airflow egress, and a debris dumping egress, and is sealed to the ambient surroundings other than the debris-laden airflow ingress and the airflow egress. In the sander-salter configuration, the main hopper has a sander and salt receiving ingress and a sand and salt egress. In use, in the surface cleaning configuration, the debris-laden air enters the main hopper through the debris-laden airflow ingress, air exits the main hopper through the airflow egress, and the debris exits the main hopper through the debris dumping egress. In use, in the sander-salter configuration, the sand and salt enter the main hopper through the sander and salt receiving ingress, and the sand and salt exit the main hopper through the sand and salt egress.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: April 26, 2016
    Inventor: Roger P. Vanderlinden
  • Patent number: 9027199
    Abstract: In a cleaning system, dust stored in a dust box is suspended in air introduced into the dust box through a first opening formed through a robot cleaner, and is then discharged to a second opening formed through a maintenance station through the first opening of the robot cleaner.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: May 12, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun Soo Jung, Dong Won Kim, Jun Hwa Lee, Jun Pyo Hong, Sang Sik Yoon
  • Patent number: 8960648
    Abstract: An arrangement for removing dust from the atmosphere during cleaning of a generally flat surface, such as floor, includes a reservoir for providing water to a nozzle. Also included is an air compressor and a compressed air tank. Compressed air is provided in a controlled manner at an elevated pressure to the nozzle to reduce the water to minute droplets which absorb/encapsulate the dust particles and deposit them on the floor surface under the influence of gravity. A manual or automatic pressure regulator coupled to the outlet of the compressed air tank allows for selecting the air velocity and the size of the water droplets to match the size of the dust particles to increase the extent of dust removal. This dust removal approach can be used with virtually any type of generally flat surface and the compressed air has a siphoning effect to increase the water droplets produced and the dust particles removed.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: February 24, 2015
    Assignee: Minuteman International, Inc.
    Inventor: Ethan Martin
  • Patent number: 8857013
    Abstract: A vacuum cleaning device comprises a unit (1) in which an oscillating airflow is generated which substantially zero net flow and an asymmetry between the suction and the blowing phases, such that in the blowing phase a jet is generated. A generator (31) which is needed for generating the oscillating airflow comprises a movable surface (30) which is integrated in a wall (12) of a housing (10) having an internal space (11) and at least one opening (13) for allowing air to flow to and from the internal space (11). The jet can be generates when the so-called Strouhal number, being the frequency of the movement of the movable surface (30) multiplied by a characteristic dimension of the opening (13) and divided by the velocity of the air in the opening (13), is not higher than a predetermined maximum.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: October 14, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Gerben Kooijman, Jan Frederik Suijver, Yvonne Wendela Kruijt-Stegeman, Jeroen Herman Lammers
  • Patent number: 8840730
    Abstract: A machine for cleaning a head-disk assembly (HDA) of a hard disk drive (HDD) includes a nest that seals the HDA between an upper and lower portion during cleaning. An inlet port receives a gas and an exhaust port exhausts the gas and entrained particles. A shock drive delivers mechanical shocks to the nest and the HDA while the gas is flowing through the HDA. A blower may circulate the gas from the exhaust port to the inlet port. A filter may be coupled to the inlet port. The HDA nest may be movable along an axis of the mechanical shocks delivered by the shock drive. A blow tube may deliver gas to a screw hole and a coaxial vacuum tube may rest against a surface around the screw hole to encapsulate the blow tube during cleaning and remove the gas and particles from the screw hole.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: September 23, 2014
    Assignee: Western Digital Technologies, Inc.
    Inventors: Pranee Thonghara, Lie Dhani Hastama, Pattira Mokawan
  • Patent number: 8806703
    Abstract: A vacuum cleaner includes a device for dispensing atomized liquid, the device having a reservoir for holding liquid and an ultrasonic transducer arranged to atomize the liquid in the reservoir. An airflow is created through the reservoir via the exhaust gasflow from the vacuum cleaner, the airflow carrying the atomized liquid via an elongate tube to dispensing outlet provided on a cleaning head of the vacuum cleaner. The ultrasonic transducer is simple and inexpensive, yet is able to reliably atomize the liquid for dispensing.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: August 19, 2014
    Assignee: Hoover Limited
    Inventor: Alexander Anthony Denny Bassett
  • Patent number: 8782848
    Abstract: An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arraigned to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: July 22, 2014
    Assignee: iRobot Corporation
    Inventors: Andrew Ziegler, Christopher John Morse, Duane L. Gilbert, Jr., Andrew Jones
  • Patent number: 8739355
    Abstract: An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arraigned to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: June 3, 2014
    Assignee: iRobot Corporation
    Inventors: Christopher J. Morse, Andrew Ziegler, Duane Gilbert, Andrew Jones
  • Patent number: 8387631
    Abstract: A machine for cleaning a head-disk assembly (HDA) of a hard disk drive (HDD) includes a nest that seals the HDA between an upper and lower portion during cleaning. An inlet port receives a gas and an exhaust port exhausts the gas and entrained particles. A shock drive delivers mechanical shocks to the nest and the HDA while the gas is flowing through the HDA. A blower may circulate the gas from the exhaust port to the inlet port. A filter may be coupled to the inlet port. The HDA nest may be movable along an axis of the mechanical shocks delivered by the shock drive. A blow tube may deliver gas to a screw hole and a coaxial vacuum tube may rest against a surface around the screw hole to encapsulate the blow tube during cleaning and remove the gas and particles from the screw hole.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: March 5, 2013
    Assignee: Western Digital Technologies, Inc.
    Inventors: Pranee Thonghara, Lie Dhani Hastama, Pattira Mokawan
  • Patent number: 8321993
    Abstract: The invention relates to a device for cleaning a ground surface of artificial turf with filler, comprising a frame, moving and supporting means arranged on the frame for the purpose of moving the device over the ground surface, and processing means arranged on the frame for processing a flow of material taken up from the ground surface, such as dirt and filler, wherein the processing means comprise: a take-up means, a separating means, a collecting means, a feedback means. The invention is characterized in that the processing means further comprise a dust suction device, wherein the dust suction device comprises at least a pump means for creating an underpressure and a dust inlet which is connected to a suction side of the pump means and which is arranged in the vicinity of the separating means in the device.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: December 4, 2012
    Assignee: Redexim Handel-en Exploitatie Maatschappij B.V.
    Inventor: Cornelis Hermanus Maria de Bree
  • Patent number: 8312592
    Abstract: The invention relates to a cleaning apparatus (10) for releasing and transporting particles away from an area to be cleaned, comprising: a housing (6) having an opening (8) to be positioned on an area (1) to be cleaned;—a member that is movable within the apparatus for generating an airflow to release and transport particles away from the area; wherein the member comprises an airflow-generating surface (12) arranged within the housing (6), said airflow-generating surface in its operating condition lacing the area (1) to be cleaned and having a direction of movement that is substantially parallel to said area so as to cause an airflow parallel to said area. The apparatus according to the invention requires less energy for releasing and transporting particles away from an area to be cleaned.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: November 20, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Fokke R. Voorhorst, Johan Pragt, Freddy Moes, Jan Hans Benedictus, Lorcan Jarlath Kemple
  • Patent number: 8272097
    Abstract: An upright vacuum cleaner for cleaning a surface includes an upper body having a dust collection container received therein, a base unit and a carriage configured to provide movement of the base unit on the surface. A motor-fan unit is disposed in the base unit and configured to create a partial vacuum at the surface. A rigid, yoke-shaped duct member provides at least a portion of an air path from the base unit to the upper body. The yoke-shaped duct member supports the upper body such that the upper body is pivotable relative to the base unit about a tilt axis extending horizontally when the upright vacuum cleaner is in a position of use.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: September 25, 2012
    Assignee: Miele & Cie. KG
    Inventor: Michael Poetting
  • Patent number: 8266760
    Abstract: An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arraigned to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: September 18, 2012
    Assignee: iRobot Corporation
    Inventors: Christopher J. Morse, Andrew Ziegler, Duane Gilbert, Andrew Jones
  • Patent number: 8181309
    Abstract: An upright vacuum cleaner for cleaning a surface includes an upper body having a dust collection container received therein, a base unit and a carriage configured to provide movement of the base unit at the surface. A motor-fan unit is disposed in the upright vacuum cleaner outside the upper body and is unit configured to create a partial vacuum on the surface. The upper body and base unit are connected with a tilting joint such that the upper body is tiltable relative to the base unit about a tilt axis that extends horizontally when the upright vacuum cleaner is in a position of use. A swivel joint is disposed between the upper body and the base unit. The swivel joint is configured to change a direction of travel of the upright vacuum cleaner in response to twisting of the upper body. The swivel joint includes a tubular section articulated to the base unit and a bearing housing disposed rotatably about the tubular section. The bearing housing is received in a receiving structure of the upper body.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: May 22, 2012
    Assignee: Miele & Cie. KG
    Inventors: Udo Mersmann, Michael Poetting
  • Patent number: 8141201
    Abstract: A side plate of an impeller is formed so that the height thereof is lowered gradually from an edge portion of a central opening portion toward a circumferential portion. When the distance from the edge portion of the central opening portion to the circumferential portion, in a direction perpendicular to the output shaft, is taken as L, the distance from the edge portion of the central opening portion to the circumferential portion, in the direction of the output shaft, is taken as H, a point on the side plate away from the edge portion of the central opening portion by 0.1×L in the direction perpendicular to the output shaft is taken as P, and the distance from the edge portion of the central opening portion to the point P in the direction of the output shaft is taken as ?H, ?H/H?0.4 is satisfied. With this configuration, the formation of a vortex flow in the flow channel inside the impeller from the air inlet to the air outlet is reduced, and, thus, air blowing efficiency is improved.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: March 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Shizuka Yokote, Keigo Matsumoto
  • Patent number: 8117711
    Abstract: An improved pickup or intake hood for use in regenerative air flow road and pavement sweeper vehicles includes at least one side auxiliary plenums and/or at least one side-to-side plenum adjacent the primary air flow compartment. The auxiliary plenums are attached by appropriate ducting into the regenerative air flow so that any fugitive air and or dust flows from the primary air flow compartment are captured in the auxiliary plenums to minimize fugitive air and/or dust flows into the ambient atmosphere. Dust conduits from shrouded gutter brooms enter a manifold box to allow dust-entrained air flows from one or both gutter brooms to enter into the regenerative air flow to capture dust generated by the gutter brooms.
    Type: Grant
    Filed: November 2, 2008
    Date of Patent: February 21, 2012
    Assignee: Schwarze Industries, Inc.
    Inventor: Edward B. Stell
  • Patent number: 8099827
    Abstract: The invention relates to a device for suction of waste and contaminating substances from the ground of the type used in machines for cleaning roads and similar, comprising a suction pipe (2) and a recirculation pipe (3), the device comprising: an inlet aperture (2a) of the suction pipe (2a) and an outlet aperture (3a) of the recirculation pipe (3); the outlet aperture (3a) being a slot surrounding the inlet aperture (2a) near the ground; the device further comprising a system for adjustment (12) of the distance from the ground consisting of an articulated quadrilateral (13), a fluid dynamic cylinder (14) and at least one castor (15) in contact with the ground.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: January 24, 2012
    Assignee: Dulevo International S.p.A.
    Inventor: Fabrizio Tagliaferri
  • Patent number: 8020250
    Abstract: The invention relates to a device for cleaning a ground surface of artificial turf with filler, comprising a frame, moving and supporting means arranged on the frame for the purpose of moving the device over the ground surface, and processing means arranged on the frame for processing a flow of material taken up from the ground surface, such as dirt and filler, wherein the processing' means comprise: a take-up means, a separating means, a collecting means, a feedback means. The invention is characterized in that the processing means further comprise a dust suction device, wherein the dust suction device comprises at least a pump means for creating an underpressure and a dust inlet which is connected to a suction side of the pump means and which is arranged in the vicinity of the separating means in the device.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: September 20, 2011
    Assignee: Redexim Handel-en Exploitatie Maatschappij B.V.
    Inventor: Cornelis Hermanus Maria de Bree
  • Patent number: 7917990
    Abstract: A duct cleaning apparatus for cleaning ventilation ducts in a household environment comprises a typical household or light industrial vacuum cleaning having a sealed container, a blower having suction and exhaust, a first flexible hose attached to the suction port and a second flexible hose attached to the exhaust port. The hoses are adjacent and parallel to each other and fixed together using a plurality regularly spaced elastic bands. A blower nozzle and a suction nozzle are adjacent to each other and placed in a duct for cleaning. The blower nozzle directs a jet of air into the vacuum zone of the suction nozzle thereby agitating dirt and debris within the vacuum zone for a more efficient cleaning action.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: April 5, 2011
    Inventor: Doug Moroz
  • Patent number: 7913351
    Abstract: A cleaning apparatus which can efficiently and satisfactorily clean component parts facing narrow spaces. A mixture of a substance in gaseous form and the same substance in liquid form or solid form as the former is jetted out from a jet pipe toward deposits attached to a structural object. The jetted mixture and the deposits to which the mixture has been jetted are sucked into a suction pipe.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: March 29, 2011
    Assignee: Tokyo Electron Limited
    Inventor: Tsuyoshi Moriya
  • Patent number: 7877838
    Abstract: The invention relates to an apparatus for cleaning a ground surface of synthetic grass and a filler comprising a frame (4), moving and supporting means (5) arranged on the frame (4) for moving the apparatus over the ground surface, cleaning means for the filler arranged on the frame (4), wherein the cleaning means comprise at least one cleaning space for the filler and an air pump (14), wherein a suction side of the air pump (14) is connected to the cleaning space, wherein supply means (25-29, 30) are arranged on the frame for supplying the filler to the cleaning means. Moreover, a pressure side of the air pump is connected to the supply means.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: February 1, 2011
    Assignee: Redexim Handel-En Exploitatie MIJ. B.V.
    Inventor: Anton Cornelis Bos
  • Patent number: 7837751
    Abstract: An apparatus for collection and reduction of yard debris combining a frontally facing vacuum pick up with a chipper-shredder-blower unit to induce airflow for entraining debris collected at the vacuum pick up; reduce the entrained debris to a more manageable volume; impel the reduced debris to a two-stage free-flow-separator device for removing the debris from the air in which it is entrained; and deposit the debris in a detachable accumulator for subsequent dumping.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: November 23, 2010
    Assignee: BestRake, LLC
    Inventors: Charles Everett Dunning, Richard Bernard Saathoff
  • Patent number: 7836545
    Abstract: A manually guided suction apparatus for suctioning up material via a suction air stream, comprising a suction fan having a fan housing surrounding a fan wheel and provided with an intake opening. A centrifugal separator is disposed upstream of the intake opening and produces a curved path of the suction air stream. The centrifugal separator has a curved peripheral wall in which is disposed a removal opening for material that is to be sucked up. The intake opening is disposed approximately in a central portion of the centrifugal separator.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: November 23, 2010
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Georg Maier, Wolfgang Layher, Markus Zwimpfer, Uwe Gaese, Marco Deuchert, Michael Hermann, Sebastian Gembardt, Jochen Keinath, Rolf Erhardt
  • Publication number: 20100269853
    Abstract: Systems and methods for debris extraction reduce the lifting force on the workpiece through a supply air feature. The supply air feature can be implemented through an extraction nozzle, which has an outer supply duct surrounding an inner exhaust duct. Further reduction of the lifting force can be realized through the use of multiple extraction nozzles which limit exhaust airflow to areas of the workpiece with active laser scribing.
    Type: Application
    Filed: April 27, 2009
    Publication date: October 28, 2010
    Applicant: Applied Materials, Inc.
    Inventors: BENJAMIN JOHNSTON, Shinichi Kurita
  • Patent number: 7788765
    Abstract: A fluid recirculating cleaning device includes an exhaust port defining an exhaust port longitudinal axis, a fluid source end and an exhaust end defining a first cross-sectional area. A suction port includes a suction port longitudinal axis, a fluid exit end and a fluid entrance end defining a second cross-sectional area greater than the first cross-sectional area. The suction port includes a second outer surface that extends from the entrance end toward the fluid exit end. A vacuum blower motor sucks fluid in through the suction port to create fluid flow away from the vacuum motor and toward the exhaust port exhaust end. The exhaust port exhaust end is recessed from the suction port fluid entrance end and the two ports are located with respect to one another so that fluid flow from the exhaust port will be effectively drawn into the suction port.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: September 7, 2010
    Inventor: Donavan J. Allen
  • Patent number: 7765637
    Abstract: A manually guided suction apparatus for suctioning up material via a suction air stream, comprising a suction fan having a fan housing surrounding a fan wheel and provided with an intake opening. A removal opening for sucked up material is disposed upstream of the intake opening in an intake channel that guides the suction air stream toward the suction fan. The removal opening empties into a collection bag, and the suction air stream in the intake channel is guided past the removal opening. An endless tube folded up to form a supply portion is stored in a storage chamber. A container portion of the endless tube forms the collection bag. A weight support for the collection bag prevents the supply portion from being pulled out of the storage chamber.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: August 3, 2010
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Georg Maier, Markus Zwimpfer, Uwe Gaese
  • Patent number: 7757340
    Abstract: A soft-surface remediation (SSR) device and method of remediating soft surfaces using preferably forced air is disclosed. The device is lightweight, and easy-to-use and preferably includes an outer housing with an optional corner pickup region and a removable cover, an inner housing, a motor housing for housing a fan assembly, an optional disposal catch mechanism, an optional mounted delivery device, a first air channel with an air outlet, a second air channel with an air inlet, and a return air channel in close proximity to the disposal mechanism. The method of performing soft-surface remediation preferably includes use of this SSR device.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: July 20, 2010
    Assignee: S.C. Johnson & Son, Inc.
    Inventor: Michael M. Sawalski
  • Patent number: 7607195
    Abstract: A cleaning unit is disclosed, comprising: a containment chamber (2) defining an accumulation base (10), a suction apparatus (3) including a suction inlet (6) positioned close to the ground, and a filtering apparatus (12), the suction apparatus (3) comprising primary suction means (4) and secondary suction means (5) positioned in parallel to one another above the accumulation base (10), the primary suction means (4) controlling said suction inlet (6) and the secondary suction means (5) being suitable to expel filtered air, and the containment chamber (2) including separating element (9) which separates the turbulent zone (5a), the air inside of which being highly turbulent, and a recirculation zone (4a), the air inside of which having a low turbulence, the recirculation zone (4a) being connected to the primary suction means (4) and the turbulent zone (5a) being connected to the secondary suction means (5).
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: October 27, 2009
    Assignee: Dulevo International S. p. A.
    Inventor: Fabrizio Tagliaferri
  • Patent number: 7555812
    Abstract: The brushless vacuum cleaner is an electrical cleaning device that would feature conventional components from traditional upright vacuum cleaners but would use forced air to agitate debris from the surface to be cleaned. The brushless vacuum cleaner would consist of a base unit with multiple air injectors on the bottom, a pump case located on top of the base unit, a collection unit extending upward from the pump case, a vacuum chamber connecting the bottom of the base unit to the collection unit, and a handle that features various control buttons. The pump case would contain an electrical motor which would operate a dual-cycle agitator responsible for pulsing air flow through alternating air injectors on every other cycle. This system would replace the beater brush found on conventional upright vacuum cleaners, thus creating less wear and tear to carpeting and prolonging the life of the carpet.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: July 7, 2009
    Inventor: Craig A. Pinney
  • Patent number: 7552503
    Abstract: A cleaning apparatus and method which includes spraying high pressure air obliquely onto a cleaning surface from an air nozzle disposed in the vicinity of the cleaning surface of a cleaning object to be cleaned. A recovery portion of the cleaning apparatus which is disposed in front of an outlet port of the air nozzle recovers at least air containing foreign matter removed from the cleaning object by making the air exhaust into an exhaust introducing passage along a wall surface of an air guide. The recovery portion of the cleaning apparatus includes an air guide section disposed in front of the outlet port of the air nozzle, and an air cover section, which forms an exhaust introducing passage for recovering the air that flows along an air guide wall surface of the air guide section.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: June 30, 2009
    Assignee: Sony Corporation
    Inventors: Mitsunobu Wakao, Masaki Terai, Yukitoyo Ohshima
  • Publication number: 20090113660
    Abstract: An improved pickup or intake hood for use in regenerative air flow road and pavement sweeper vehicles includes at least one side auxiliary plenums and/or at least one side-to-side plenum adjacent the primary air flow compartment. The auxiliary plenums are attached by appropriate ducting into the regenerative air flow so that any fugitive air and or dust flows from the primary air flow compartment are captured in the auxiliary plenums to minimize fugitive air and/or dust flows into the ambient atmosphere. Dust conduits from shrouded gutter brooms enter a manifold box to allow dust-entrained air flows from one or both gutter brooms to enter into the regenerative air flow to capture dust generated by the gutter brooms.
    Type: Application
    Filed: November 2, 2008
    Publication date: May 7, 2009
    Inventor: Edward B. STELL
  • Patent number: 7503134
    Abstract: A vacuum container mounted on an inclined slope and having a liquid water storage container mounted beneath the incline of the vacuum container. The water storage container may support the vacuum container. The slope may be of sufficient angle to allow debris to be emptied from the vacuum container by gravity when the access door is opened. A filter housing may be mounted to and supported by the vacuum container. By flush mounting the clean out end of the filter housing with the clean out end of the vacuum container, a single access clean out door may be used to access both simultaneously.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: March 17, 2009
    Inventor: Lynn A. Buckner
  • Patent number: 7458130
    Abstract: A vacuum cleaner with a closed loop air system is disclosed that is intended for the cleaning of soft-coated floors, such as carpets and rugs. The cleaner includes two main units: a floating foot, containing an intake nozzle and an expanded chamber for the returning air stream, and a managing unit, containing a managing handle and supporting wheels. The floating foot has a seal along its perimeter, enclosing the space between the surface being cleaned and the bottom of the foot from the surrounding space and also contains the expanded chamber for the returning air stream. The foot and managing unit are joined by a universal joint that makes the foot floating, allowing it to swing forward, back, left and right. It also guarantees that the foot is always pressed to the surface being cleaned, independent of the position of the managing unit and handle movement. This guaranteed contact prevents the escape of the air stream, as a working medium, from the closed loop system into the surrounding space.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: December 2, 2008
    Inventors: Mark D. Krymsky, Eugene Finkel
  • Publication number: 20080229539
    Abstract: An upright vacuum cleaner includes a suction nozzle unit, an inlet formed on a bottom surface of the suction nozzle unit, an injection path disposed near the inlet, a suction motor mounted in the suction nozzle unit, and a main body attached to the suction nozzle unit and in fluid communication with the suction motor. The injection path ejects air toward a surface to be cleaned. The suction motor generates a suction force to draw in air and dust through the inlet. The main body separates dust from the air using centrifugal force, collects the dust, and discharges the air to the suction nozzle unit. The air discharged from the main body flows through the suction motor, is ejected from the injection path toward the surface to be cleaned, and is then suctioned into the inlet so that a portion of the discharged air circulates within the vacuum cleaner.
    Type: Application
    Filed: August 29, 2007
    Publication date: September 25, 2008
    Inventors: Yun-sup Hwang, Myoung-sun Choung, Dong-hun Yoo
  • Publication number: 20080209667
    Abstract: A fluid recirculating cleaning device includes an exhaust port defining an exhaust port longitudinal axis, a fluid source end and an exhaust end defining a first cross-sectional area. A suction port includes a suction port longitudinal axis, a fluid exit end and a fluid entrance end defining a second cross-sectional area greater than the first cross-sectional area. The suction port includes a second outer surface that extends from the entrance end toward the fluid exit end. A vacuum blower motor sucks fluid in through the suction port to create fluid flow away from the vacuum motor and toward the exhaust port exhaust end. The exhaust port exhaust end is recessed from the suction port fluid entrance end and the two ports are located with respect to one another so that fluid flow from the exhaust port will be effectively drawn into the suction port.
    Type: Application
    Filed: August 31, 2007
    Publication date: September 4, 2008
    Inventor: Donavan J. Allen
  • Patent number: 7383607
    Abstract: An agitation apparatus which is suitable for use in a cleaning head of a vacuum cleaner includes first and second flow paths. Each of these flow paths has a resonant cavity and an inlet/outlet port which joins the cavity to a space within the cleaning head. A generator, such as a loudspeaker with a diaphragm, generates an alternating pressure wave between the ports. Pressure waves are emitted from one of the ports in an anti-phase relationship with the pressure waves from the other of the ports, thus reducing operating noise. Due to both sides of the generator or diaphragm being exposed to an equal static pressure, the generator operates more reliably. A plurality of these arrangements can be provided across the cleaning head, and a part of the agitation apparatus, such as the driver, can be mounted on the main body of the vacuum cleaner.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: June 10, 2008
    Assignee: Dyson Technology Limited
    Inventor: Mark Andrew Johnson
  • Publication number: 20080083084
    Abstract: A hood for a mechanized sweeper has dual portions connected via a mating surface and includes several downward depending flaps for increasing volumetric efficiency of defined vacuum plenum. The three flaps consist of a front flap, a middle flap, and a rear flap, and are of a cartridge type to facilitate replacement. The front and rear flaps are adjustable to allow for lowering of these two flaps in the event of wear due to friction against a paved road surface. A mechanism for raising the leading edge of the hood is also provided.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 10, 2008
    Inventor: Mark Schwarze
  • Publication number: 20080083083
    Abstract: A hood for a mechanized sweeper comprises an upper surface, an adjustable front flap, an adjustable rear flap, and end skirts. The adjustable front flap is configured to extend perpendicularly downward from the upper surface. The adjustable rear flap is configured to extend perpendicularly downward from the upper surface. The end skirts are configured to extend perpendicularly downward from the upper surface and further configured to extend perpendicular from the front flap and the rear flap such that the adjustable front and rear flaps are adjusted to maintain a depth equal to the depth of the end skirts.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 10, 2008
    Inventor: Mark Schwarze
  • Patent number: 7337493
    Abstract: An upright-type electric vacuum cleaner including a vacuum cleaner main body with at least a dust collector and an exhaust outlet, and a suction body provided at a lower front of the vacuum main body. The dust collector is disposed on a rearward side of the vacuum cleaner main body and wherein the exhaust outlet is disposed on a front surface side of the dust collector. The area of the exhaust outlet can be made large without being interfered by the dust collector.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: March 4, 2008
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Shuzo Ueyama, Hidetoshi Fukuoka, Shinichi Hagino, Jun Yoshida, Yoshihiro Mori
  • Patent number: 7329297
    Abstract: An apparatus for collection and reduction of yard debris combining a frontally facing vacuum pick up with a chipper-shredder-blower unit to induce airflow for entraining debris collected at the vacuum pick up; reduce the entrained debris to a more manageable volume; impel the reduced debris to a high-efficiency free-flow-separator device for removing the debris from the air in which it is entrained; and deposit the debris in a detachable accumulator for subsequent dumping.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: February 12, 2008
    Assignee: BestRake, LLC
    Inventors: Charles Everett Dunning, Richard Bernard Saathoff
  • Patent number: 7320151
    Abstract: An electric vacuum cleaner of the present invention includes: a base plate connected to the lower face of a cleaner body so that the base plate is freely movable up and down, and having an exhaust hole formed in a surface facing the surface to be cleaned for blowing exhaust air; an extensible air duct, interposed between the base plate and the cleaner body, for guiding the exhaust air from an intake fan to the base plate; a dust suction nozzle supported on a part of the base plate and connected to the suction side of the intake fan; and wheels, mounted on the lower face of the cleaner body, for supporting the cleaner body on the surface to be cleaned when the base plate is moved up.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: January 22, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yasuhiro Oka
  • Patent number: 7320735
    Abstract: A simple yet effective system for cleaning fans and air circulators facilitates the cleaning of ceiling and hard-to-reach units without having to remove the blades or other parts to be cleaned. A flexible bag encloses parts of a fan to be cleaned. A source of compressed air is used for inflating the bag, and a source of vacuum is used for collecting particulates used for cleaning. A user-controlled nozzle is used for spraying particulates against parts of the fan to be cleaned. The user-controlled nozzle terminates in a narrow tube operative to puncture the bag, which is preferably a transparent plastic bag. The source of compressed air and the source of vacuum may share a common vacuum unit with particulate filter such as a “shop-vac” type of equipment. The particulates used for cleaning may include any suitable abrasive though, in the preferred embodiment, granulated walnut or other nut shells are used. In contrast to devices that clean with liquids, the enclosure may envelope the motor and blades.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: January 22, 2008
    Assignee: Airmaster Fan Company
    Inventor: Stanley J. Riske
  • Patent number: 7311785
    Abstract: An automatic air-blown cleaning apparatus for cleaning a liquid crystal display (LCD) component in an LCD assembly process. The automatic air-blown cleaning apparatus has an assembly station for receiving and assembling the liquid crystal display component, a conveying device for delivering the liquid crystal display component to the next assembly station, and an air filtering blower provided on the conveying device. The air filtering blower sends an air flow toward the liquid crystal display component to remove residual matter from the liquid crystal display component.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: December 25, 2007
    Assignee: Au Optronics Corp.
    Inventors: I-Min Chin, Chien-Wen Lai
  • Patent number: 7234197
    Abstract: A spot cleaning apparatus comprises a fluid distribution system, a fluid recovery system, an agitation system, and a controller system to automatically monitor and control inputs and outputs to said systems for removal of spots and stains from a surface without attendance by a user. A suction nozzle and agitation device are mounted to the housing for movement over the surface to be cleaned relative to a stationary housing. Optionally, the spot cleaning apparatus can be operated in a manual mode. In one embodiment, the spot cleaning apparatus comprises a controller for continuously reversing the agitation direction of the agitatation system. In another embodiment, the spot cleaning apparatus comprises a modular strain relief assembly. In yet another embodiment, working air is recirculated to the surface to be cleaned through internal ducting.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: June 26, 2007
    Assignee: Bissell Homecare, Inc.
    Inventor: Phong Hoang Tran