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
  • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
  • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
• • 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
  • A47L11/03—Floor surfacing or polishing machines characterised by having provisions for supplying cleaning or polishing agents
• • 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
  • A47L11/4011—Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor

Definitions

• Mobile surface maintenance machines include motorized tools that are used to perform a surface maintenance operation on a floor surface. These machines include floor surface cleaners that are used to perform cleaning operations on floors including scrubbing and/or sweeping operations on hard floor and carpeted surfaces. Other mobile floor surface maintenance machines include those that include tools for performing polishing and burnishing floor surface treatments.
• Mobile surface maintenance machines include various adjustable settings for the floor maintenance operation to be performed. These settings are typically configurable by the operator of the floor machine at a main operator interface of the machine, such as a control panel.
• the adjustable settings include, for example, a downward pressure to be applied to the floor by the motorized cleaning tool (scrub brush, sweeper brush, or combination scrub and sweeper brush), a flow rate of cleaning liquid to be applied to the floor or the cleaning tool, a flow rate of cleaning agent or detergent that is mixed with water to form the cleaning liquid, and other settings. Similar settings are used by polishing and burnishing machines including a pressure setting that determines the downward pressure to be applied by the cleaning tool during floor polishing or burnishing operations.
• the adjustable settings that relate to consumables of the mobile surface maintenance machine generally affect the life span of the consumable. For example, the lighter the downward pressure setting is for the motorized cleaning tool (i.e., scrub brushes, scrub pad, burnishing pad, polishing pad, etc.) the longer the cleaning tool will last before it must be replaced. Similarly, the slower the flow rate setting is for the cleaning agent or detergent, the more cleaning operations that can be performed using the available supply of cleaning agent. Thus, the setting can have a direct impact on the life span of the consumable and the cost of operating the mobile surface maintenance machine.
• the motorized cleaning tool i.e., scrub brushes, scrub pad, burnishing pad, polishing pad, etc.
• Embodiments of the invention are directed to a mobile surface maintenance machine that is configurable over a network and a method of configuring a surface maintenance machine over a network.
• One embodiment of the mobile surface maintenance machine includes a mobile body configured to travel over a surface, a motorized tool, a communicator, a memory, and a controller.
• the motorized tool is supported by the mobile body and configured to engage the surface.
• the communicator is configured to communicate over a network.
• the memory contains settings for the machine.
• the control is configured to modify the settings of the machine in response to setting information received by the communicator over the network and to control operations of the machine based on the settings.
• setting information is received over a network using the communicator of the mobile surface maintenance machine.
• the settings for the machine are modified using the controller based on the setting information.
• the surface maintenance machine in operated based on the settings.
• FIG. 1 is a simplified block diagram of a mobile surface maintenance machine in accordance with embodiments of the invention.
• FIG. 2 is a block diagram of a cleaning liquid dispensing system in accordance with embodiments of the invention.
• FIG. 3 is a block diagram of a memory containing settings for the mobile surface maintenance machine in accordance with embodiments of the invention.
• FIG. 4 is a block diagram of setting information in accordance with embodiments of the invention.
• FIG. 5 is a flowchart illustrating a method of configuring a mobile surface maintenance machine in accordance with embodiments of the invention.
• Embodiments of the present invention facilitate configuring settings of a mobile surface maintenance machine (hereinafter "machine") over a network.
• machine a mobile surface maintenance machine
• the present invention can be used by an administrator of one or more machines in a fleet of machines to change one or more adjustable settings of the machines over a network.
• Different machines can be configured differently from other machines that are within the same fleet, if desired.
• problems that arise from modifications to the settings by an operator can be reduced or eliminated.
• the administrator can control the settings of the machines that affect the life span of consumables of the machine and, thus, the cost of operating the machine.
• the administrator of the machines can use embodiments of the present invention to enable or disable certain features of the machines. This allows the administrator to tailor the machines for particular uses or for particular customers who may be leasing the machines, for example.
• FIG. 1 is a simplified block diagram of a mobile surface maintenance machine 100 in accordance with embodiments of the invention.
• the machine 100 can be configured to perform a cleaning or condition operation on a floor surface.
• the machine 100 can be designed for use by an operator that walks behind, rides on, or tows the machine 100.
• the machine 100 can be powered by batteries, a combustible engine, line power or other suitable power source.
• Cleaning operations on floors include scrubbing and/or sweeping operations on hard floor and carpeted surfaces. Examples of machines designed to perform such cleaning operations are described in U.S. Patent Nos. 4,571,771, 5,016,310, 5,901,407, 5,943,724 and 6,735,811, all of which are assigned to Tennant Company of Minneapolis, Minnesota. Exemplary floor conditioning operations include polishing and burnishing operations. An example of a machine for performing such floor conditioning operations is described in U.S. Patent No. 4,805,258, which is assigned to Tennant Company of Minneapolis, Minnesota.
• Embodiments of the machine 100 include a mobile body 102 comprising a frame that is supported on wheels 104 for travel over a surface 106, on which a cleaning operations is to be performed.
• a motor 108 is configured to drive at least one of the wheels 104.
• Embodiments of the machine 100 also include components that are supported on the mobile body 102 including, for example, a motorized tool 110, a communicator 112, memory 114 and a controller 116.
• the motorized tool 110 is supported by the mobile body 102 and is used to perform a cleaning or conditioning operation on the surface 106, as indicated by arrow 117.
• Exemplary motorized tools 110 include a scrub brush 118 (e.g., disk scrub brush or pad, or a cylindrical scrub brush), a sweeper brush 120 (e.g., disk or cylindrical), a combination sweep and scrub brush 122, a burnishing pad 124, a polishing pad 126, or other motorized tool 110 used to perform hard floor and/or carpeted surface maintenance operations.
• the machine 100 includes a tool lift 128.
• the tool lift 128 is configured to raise and lower the tool 110 relative to the frame of the mobile body 102, as indicated by arrow 130.
• the tool lift 128 can be used to raise the motorized tool 110 off the surface 106 during transport as well as control of a pressure that is applied to the surface 106 during surface maintenance operations.
• Exemplary tool lifts 128 are described in U.S. Patent Nos. 6,618,888 and 7,038,416, which are assigned to Tennant Company.
• operation of the tool lift 128 is based on a control signal 132 from the controller 116. As explained below, in one embodiment the control signal 132 is based on a pressure setting.
• the tool lift 128 causes the motorized tool 110 to apply a pressure to surface 106 based on the pressure setting.
• One embodiment of the machine 100 includes a cleaning liquid dispenser 134 that is configured to apply a cleaning liquid 136 to one of the surface 102 and the tool 128 (i.e., the scrub brush , the sweeper brush, or the sweep/scrub brush), as respectively indicated by arrows 136A and 136B of FIG. 1.
• Embodiments of the dispenser 134 are illustrated in the block diagram of FIG. 2.
• One embodiment of the cleaning liquid dispenser 134 includes a supply of the cleaning liquid and a pump 138 for driving a flow of the cleaning liquid 136 through tubing to be discharged at the desired location.
• the cleaning liquid 136 can comprise water or a combination of water and a cleaning agent.
• the flow rate of the cleaning liquid is substantially determined by the pump 138.
• the pump 138 generally operates in accordance with conventional methods.
• the pump 138 is controlled by a control signal 140 from the controller 116.
• One embodiment of the control signal 140 is a pulsed signal that provides power relative to ground (not shown) and controls the duration over which the pump 138 drives the cleaning liquid 136 through the tubing.
• the control signal 140 can turn the pump 138 on for 0.1 seconds and off for 2.75 seconds to produce the desired flow rate for the cleaning liquid 136.
• one embodiment of the control signal 140 is based on a cleaning liquid flow rate setting.
• the cleaning liquid dispensing system 134 includes separate supplies of water 142 and cleaning agent 144.
• the water 142 can be stored in a tank supported on the mobile body 102, while the cleaning agent 144 is provided in a separate container, such as a fixed tank or removable container or cartridge.
• a mixing member 146 combines a flow of water 148 with a flow of the cleaning agent 150 at a desired dosage to form the flow of cleaning liquid 136.
• the dosing of the flow of cleaning agent 150 into the flow of water 148 can be provided by a cleaning agent dispenser 151 that that utilizes a venturi injector (not shown) or a dosing pump 152.
• the pump 152 is controlled by a control signal 154 from the controller 116, as described above with regard to pump 138.
• the control signal 154 is based on a cleaning agent flow rate setting.
• FIG. I 5 Another embodiment of the machine 100 includes a fluid recovery device 156, shown in FIG. I 5 that operates to remove soiled liquid waste 158 from the surface 106 during scrubbing operations.
• One embodiment of the fluid recovery device 156 includes a vacuum squeegee 160 that collects the liquid waste 158 on the surface 106.
• the vacuum squeegee 160 is raised and lowered relative to the surface 106, as indicated by arrows 162 and 164, using a conventional lift mechanism 166.
• a vacuum 168 is placed in vacuum communication with the vacuum squeegee 160 and the liquid waste 158 is removed from the surface 106 and deposited in a waste recovery tank 170.
• the controller 116 controls the communications (i.e., data receptions and transmissions) of the machine 100 using the communicator 112 and the operations of some of the components of the machine 100. It should be understood that multiple independent controllers can be used to perform the functions of the controller 116.
• the machine 100 can include a controller that is generally responsible for the control of the communications (i.e., the communicator 112) while one or more other controllers control various machine operations. Exemplary machine operations include the control of the electronics of the machine, control of the motorized tool 110, and control of the motor 108 used to propel the mobile body 102 across the surface 106.
• the machine operations and communications can be controlled by the controller 116 in response to an operator input 172 provided at a control panel of the machine 100, for example.
• Embodiments of the communicator 112 include a data transmitter and/or a data receiver.
• the transmissions and receptions of data are generally controlled by the controller 116 and can be performed in accordance with conventional communication techniques.
• the communicator 112 is generally configured to communicate with one or more computing devices 174 of an administrator of the machine 100 through a network 176 or other communication link.
• the computing device 174 is remotely located from the machine 100.
• Exemplary computing devices 174 include a mobile phone, a personal digital assistant (PDA), a personal computer, and other computing devices capable of transmitting messages over the network 176.
• the communicator 112 and the computing device 174 can be coupled either wirelessly or through a physical connection to the network 176.
• One embodiment of the communicator 112 includes a wireless communications device.
• Exemplary wireless communications devices include radio frequency (RF) communications devices that are configured to perform wireless data transmissions and, in one embodiment, data receptions.
• the RF communications device can include an RF transmitter and an RF receiver.
• the communicator 112 includes a low power (1 milliwatt) serial RF communications device configured for communicating 19.2 kilobits per second (kbps) at a frequency of 915.5 mega-hertz (MHz).
• This technology is mostly suitable for data communications over short distances, such as to the local computing device 114. However, the data communication can be extended over a greater distance through a suitable relay device.
• the communicator 112 includes a cellular communications device, such as a mobile phone, a cell modem, or other cellular device that is configured to receive data from and, in one embodiment, transmit data to, the computing device 174 through the network 176.
• a cellular communications device such as a mobile phone, a cell modem, or other cellular device that is configured to receive data from and, in one embodiment, transmit data to, the computing device 174 through the network 176.
• a cellular communications device such as a mobile phone, a cell modem, or other cellular device that is configured to receive data from and, in one embodiment, transmit data to, the computing device 174 through the network 176.
• a cellular communications device such as a mobile phone, a cell modem, or other cellular device that is configured to receive data from and, in one embodiment, transmit data to, the computing device 174 through the network 176.
• MTSMC Socket Modem
• the cellular communications device can operate with conventional cellular communication networks, such as, for example, Code Division Multiple Access (CDMA), General Packet Radio Service device (GPRS), Time Division Multiple Access (TDMA), Global System for Mobile (GSM) 5 and other mobile communication networks.
• CDMA Code Division Multiple Access
• GPRS General Packet Radio Service device
• TDMA Time Division Multiple Access
• GSM Global System for Mobile
• the data communicated between the communicator 112 and the computing device 174 is packaged in a text message.
• the communicator 112 can be configured to send and/or receive a short message service (SMS) text message, an email message containing the data, an email message with an attached document that contains the data, or other type of text message.
• SMS short message service
• the text message is communicated in accordance with any suitable communication method such as, for example, TCPIP, or other method.
• the text message includes a plurality of fields and associated data. The fields operate as labels for the associated data identifying what the data relates to.
• the data communications between the communicator 112 and the computing device 174 are secure communications. That is, a protocol is implemented that reduces the likelihood of unauthorized communications between the communicator 112 and the computing device 174. Any suitable security enabling communication method can be used.
• One or more adjustable settings 180 for the machine 100 are stored in the memory 114, as illustrated in the block diagram of FIG. 3.
• the memory 114 can comprise conventional forms of memory.
• the memory 114 is on board the machine 100 as illustrated in FIG. 1.
• the memory 114 can be remotely located and accessed by the machine 100 using the communicator 112.
• Exemplary adjustable settings 180 of the machine 100 include a cleaning liquid flow rate setting 182 corresponding to an adjustable flow rate of cleaning liquid that is applied to the cleaning tool 110 or the surface 106 during a cleaning operation, as shown in FIGS. 2 and 3.
• a cleaning liquid flow rate setting 182 corresponding to an adjustable flow rate of cleaning liquid that is applied to the cleaning tool 110 or the surface 106 during a cleaning operation, as shown in FIGS. 2 and 3.
• one embodiment of the control signal 140 from the controller 116 to the pump 138 is based on cleaning liquid flow rate setting.
• flow rate of the cleaning liquid 136 is based on the cleaning liquid flow rate setting 182.
• the cleaning liquid flow rate setting 182 is adjustable between maximum and minimum values corresponding to the maximum and minimum (e.g., zero) cleaning liquid flow rates that are desired. In another embodiment, the cleaning liquid flow rate setting 182 includes a plurality of preset values that extend across the range defined by the maximum and minimum flow rates.
• adjustable settings of the machine 100 includes a cleaning agent flow rate setting 184 corresponding to an adjustable flow rate of cleaning agent 150 (FIG. 2) that is mixed with water to form the cleaning liquid 136 that is applied to the cleaning tool 110 or the surface 106 during a cleaning operation.
• the control signal 154 from the controller 116 to the pump 152 is based on the cleaning agent flow rate setting 184.
• flow rate of the cleaning agent 150 is based on the cleaning agent flow rate setting 184 stored in the memory 114.
• the cleaning agent flow rate setting 184 is adjustable between maximum and minimum values corresponding to the maximum and minimum (e.g., zero) cleaning agent flow rates that are desired.
• the cleaning agent flow rate setting 184 includes a plurality of preset values that extend across the range defined by the maximum and minimum flow rates.
• the cleaning agent flow rates for the machine 100 span a range of less than 10.0 cubic centimeters per minute to greater than 0 cubic centimeters per minute.
• adjustable settings of the machine 100 includes a pressure setting 186 corresponding to a pressure (e.g., soft, normal, hard) that the tool 110 applies to the surface 106 during a surface maintenance operation (e.g., sweeping, scrubbing, sweeping and scrubbing, burnishing, polishing, etc.).
• a pressure setting 186 corresponding to a pressure (e.g., soft, normal, hard) that the tool 110 applies to the surface 106 during a surface maintenance operation (e.g., sweeping, scrubbing, sweeping and scrubbing, burnishing, polishing, etc.).
• a surface maintenance operation e.g., sweeping, scrubbing, sweeping and scrubbing, burnishing, polishing, etc.
• the pressure setting 186 is adjustable between maximum and minimum values corresponding to the maximum and minimum (e.g., zero) pressures that are desired to be applied to the surface 106 by the motorized tool 110 using the tool lift 128.
• the pressure setting 186 includes a plurality of preset values that extend across the range defined by the maximum and minimum pressures.
• One embodiment of the invention relates to the communication of setting information 190 from the computing device 174 to the controller 116 of the machine 100.
• Embodiments of the setting information 190 are illustrated in the block diagram of FIG. 4, which will be described in greater detail below.
• the data that is communicated between the communicator 110 and the computing device, including the setting information 190, can include many different types of information.
• the data communicated between the computing device 174 and the communicator 112 is uniquely identified by identification information 191.
• the identification information 191 operates to uniquely identify the machine 100 to which the communication pertains.
• Embodiments of the identification information 191 include a machine identification (e.g., serial number, model number, etc.), an operator identification (e.g. employee number, name, etc.), an identification of the owner of the machine 100, a location of the machine 100, an identification of components of the machine 100, the date and time of the communication, or other information that uniquely identifies the communication and preferably the machine 100.
• the identification information 191 can be stored in a memory 114 of the machine 100 that is accessible by the controller 116, as shown in FIG. 3.
• the setting information 190 communicated from the computing device 174 to the communicator 112 relates to a desired configuration of the settings 180 of the machine 100.
• the setting information 190 can be processed by the controller 116 to update the configuration of the machine 100 by modifying the corresponding settings 180 stored in the memory 114.
• one or more of the adjustable settings 180 of the machine 100 can be modified, based on the setting information 190 after the setting information 190 is received by the communicator 112 and processed by the controller 116.
• the setting information 190 generally corresponds to the adjustable settings 180 of the machine 100 that an administrator of the machines 100 desires control over.
• the setting information 190 corresponds to the settings 180 of the machine that are not generally adjustable through an operator interface of the machine, such as a control panel (i.e., input 172). In another embodiment, the setting information 190 corresponds to the settings 180 of the machine 100 that are adjustable through the operator input 172. However, as will be discussed below, the setting information 190 can be used to selectively restrict the ability of the operator to adjust the settings 180 through the input 172.
• Embodiments of the setting information include a cleaning liquid flow rate setting 192, a cleaning agent flow rate setting 194 and a pressure setting 196 that respectfully correspond to the cleaning liquid flow rate setting 182, the cleaning agent flow rate setting 184 and the pressure setting 186 stored in the memory 114.
• the setting information includes an enable/disable setting 198 that corresponds to an enable/disable setting 200 stored in the memory 114.
• the controller 116 modifies the corresponding settings 180 stored in the memory 114. Once the settings 180 are modified based on the setting information 190, the controller 116 will operate the machine 100 in accordance with the modified settings 180.
• one embodiment of the adjustable settings 180 includes enable/disable settings 200 stored in the memory 114.
• the enable/disable settings 200 correspond to features of the machine 100 that can be enabled or disabled.
• One embodiment of the features includes select machine settings, such as settings 182, 184 and 186 described above.
• one embodiment of the enable/disable settings 200 includes a list of one or more adjustable settings of the machine 100, which can be selectively enabled to allow the operator of the machine 100 to directly adjust them, or disabled to prevent their adjustment by the operator through, for example, the operator input 172.
• the pressure setting 186 it may be desirable to make the pressure setting 186 adjustable by the operator so that the operator can apply a greater pressure to the surface 106 using the tool 110 when desired.
• the pressure setting 186 would be enabled in the enable/disable settings 200 using the settings 198 to provide the adjustment control to the operator.
• the pressure setting would be disabled in the enable/disable setting to prevent the adjustment of the pressure setting 186 by the operator.
• the other settings of the machine 100 could be enabled or disabled in the same manner by configuring the enable/disable settings 200 accordingly.
• the features that can be enabled or disabled based on the enable/disable settings 200 as configured by the settings 198 include the ability of the machine 100 to perform certain conditioning or cleaning operations on the surface 106.
• the enable/disable settings 200 may be configured to allow the machine 100 to perform a surface cleaning operation using the motorized tool 110 or disabled from being allowed to perform the surface cleaning operation.
• This embodiment of the invention provides control over how the machine 100 is to be used. For example, this embodiment can be used to prevent the machine 100 from performing an operation that could damage the floor surface 106. Additionally, when the machine 100 is being leased, the owner of the machine 100 can limit the uses of the machine 100 to only those subscribed to by the lessee.
• the operator input 172 provides limited control to the operator over the adjustable settings 180 as compared to machines of the prior art. In one embodiment, the operator input 172 does not include an input that corresponds to an adjustment to the pressure setting 186 for the motorized tool 110. In another embodiment, the operator input 172 does not include an input that corresponds to an adjustment to the cleaning agent flow rate setting 184. In yet another embodiment, the operator input 172 does not include an input that corresponds to an adjustment to the cleaning liquid flow rate setting 182.
• FIG. 5 is a flowchart illustrating a method of configuring or operating embodiments of the mobile surface maintenance machine 100 described above.
• setting information 190 is transmitted over a network 176.
• the transmission of the setting information 190 can be from the computing device 174 to the communicator 112 of the machine 100 in accordance with the embodiments described above.
• the setting information* 190 is received using a communicator 112 of the mobile surface maintenance machine 100.
• the adjustable settings 180 for the machine 100 are modified based on the setting information 190 at step 214.
• the settings 180 are stored in the memory 114 of the machine and the settings 180 are modified based on the setting information 190, as described above.
• the machine 100 is operated based on the settings 190, as modified.
• the machine 100 includes a motorized tool 110 that is configured to apply a pressure to the surface 106 in accordance with a pressure setting 186 stored in the memory 114.
• the modifying step 214 comprises modifying the pressure setting 186 based on the setting information 190 (i.e., pressure setting 196) and operating the machine 100 (step 216) by applying a pressure to the surface 106 using the motorized tool 110 in accordance with the modified pressure setting stored in the memory 114.
• the pressure setting 186 determines the control signal 134 that is fed to the tool lift 128, which controls the pressure applied to the surface 106 by the motorized tool 110.
• Embodiments of the motorized tool 110 include the scrub brush 118, the sweeper brush 120, the sweep/scrub brush 122, the burnishing pad 124 and the polishing pad 126 described above.
• the machine 100 includes the cleaning liquid dispenser 134 that is configured to discharge a cleaning liquid 136 to either the surface 106 (136A) or the motorized tool 110 (136B) at a flow rate that is based on the cleaning liquid flow setting 182 stored in the memory 114.
• the modifying step 214 comprises modifying the cleaning liquid flow setting 182 based on the setting information 190 (i.e., cleaning liquid flow rate setting 192), and the operating step 216 comprises operating the cleaning liquid dispenser 134 based on the modified cleaning liquid flow rate setting 182.
• the cleaning liquid flow rate setting 182 determines a control signal 140 from the controller 116, which controls the flow of cleaning liquid 136.
• the machine 100 includes the cleaning agent dispenser 151 that is configured to discharge a cleaning agent 150 into a flow of water 148 at a flow rate that is based on a cleaning agent flow rate setting 184 stored in the memory 114.
• the modifying step 214 includes modifying the cleaning agent flow rate setting 184 based on the setting information 190 (i.e., cleaning agent flow rate setting 194), and the operating step 216 comprises operating the cleaning agent dispenser 151 based on the modified cleaning agent flow rate setting 184 stored in the memory 114.
• the cleaning agent flow rate setting 184 determines a control signal 154 that is fed to the cleaning agent dispenser 151, which controls the flow of cleaning agent 150.
• the method comprises disabling operation of the machine 100 based on the setting information 190.
• the setting information 190 can include enable/disable settings 198 that control the enablement and disablement of various features of the machine 100, as described above.
• the disabling of features using the enable/disable settings 198 in the setting information 190 allows for the disablement of the operation of the machine 100.

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• Cleaning By Liquid Or Steam (AREA)
• Electric Vacuum Cleaner (AREA)

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• 2006
  • 2006-12-04 EP EP06838916A patent/EP1969431A1/de not_active Withdrawn
  • 2006-12-04 US US11/633,244 patent/US20070124890A1/en not_active Abandoned
  • 2006-12-04 WO PCT/US2006/046213 patent/WO2007064989A1/en active Application Filing
  • 2006-12-04 JP JP2008543529A patent/JP2009518071A/ja not_active Withdrawn

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