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| Number | Title | Issue Date |
| 8151401 | Variable strength magnetic window cleaning device There is disclosed a variable strength magnetic window cleaning device having a master and slave unit utilizing magnetic force to simultaneously clean both the inside and outside panes of a window. When a user moves the master unit from inside, the slave unit follow... | 04/10/2012 |
| 7356870 | Water pipe cleaning apparatus and method The present invention is a method and apparatus for cleaning the surfaces of a water pipe. The present invention includes a major unit and a minor unit that are magnetically coupled. The pipe cleaning apparatus cleans the surfaces of a water pipe as it is moved in c... | 04/15/2008 |
| 7313841 | Suspendable magnetic brush for cleaning an aquarium with a curved window surface Present invention relates a suspendable magnetic brush for cleaning an aquarium with curved window surface, characterized in that an upper cover with an air chamber is attached tightly to a bottom cover with a cleaning material layer underneath, and an inner cover w... | 01/01/2008 |
| 7313840 | Induction liquid pump and magnetic tank scrubber An induction liquid pump includes a power unit and a circulation unit that are oppositely mountable to a tank with a plurality of fixation units. The liquid pump power unit includes a power induction unit to produce a variable magnetic field. The submersible liquid ... | 01/01/2008 |
| 7232519 | Fish tank powerhead magnetic holder A fish tank powerhead holding device is taught, the device comprising a first magnetic assembly with a first permanent strong magnet and a non-stick surface adhered to one side, a second magnetic assembly with a second permanent strong magnet that is magnetically at... | 06/19/2007 |
| 7229210 | Self-standing fish tank thermometer A self-standing aquarium thermometer includes an impermeable self-standing housing disposed within an aquarium containing a predetermined volume of water, the self-standing housing has a lower cavity for receiving a weighting element, which has a predetermined weigh... | 06/12/2007 |
| 7181800 | Duster using to clean car exterior The present invention relates to a duster for use in a vehicle for cleaning the exterior of the vehicle. More particularly, the present invention relates to a duster for use in a vehicle that can maximize cleaning efficiency with a small force since the duster is cl... | 02/27/2007 |
| 6865771 | Apparatus for remotely cleaning interior walls of tanks from the tank exterior An apparatus for cleaning liquid-filled tanks, e.g., aquariums, includes an inner cleaning assembly which moves across the interior wall of the tank and an outer cleaning assembly which moves across the exterior wall of the tank. The inner and outer cleaning assembl... | 03/15/2005 |
| 6790654 | Cell culture harvesting A scraper for scraping live cells from a substrate. The scraper comprises a magnetic core and an elastomeric housing surrounding at least a portion of the magnetic core and defining at least one scraping blade. A method of scraping and a system for scraping are also... | 09/14/2004 |
| 6634052 | Apparatus for remotely cleaning interior walls of tanks from the tank exterior An apparatus for cleaning liquid-filled tanks, e.g., aquariums, includes an inner cleaning assembly which moves across the interior wall of the tank and an outer cleaning assembly which moves across the exterior wall of the tank. The inner and outer clean... | 10/21/2003 |
| 6348104 | Device and method for cleaning aquarium windows A device and method for cleaning the interior window surface of an aquarium comprises a buoyant floatable interior element and an exterior element. At least one element has at least one magnet and the other element has a material attracted to the at least... | 02/19/2002 |
| 6221170 | Magnetic apparatus and method for wiping fog in a diving mask A diving mask fog wiping device and method which allows fog on the inside of the viewing face plate to be wiped by a slave unit which is magnetically coupled to a master unit on the opposite side of said viewing face plate. Further, the slave unit is magn... | 04/24/2001 |
| 6206978 | Process for cleaning aquarium tank walls A process for using a magnetic aquarium tank wall cleaning tool for cleaning the inner surface of an aquarium having one or more curved interior vertical corners. Magnetic cleaners for aquariums eliminate the need for reaching into the tank or manipulatin... | 03/27/2001 |
| 5988109 | Aquarium wall cleaning apparatus An apparatus for cleaning the inner wall surfaces of an aquarium tank includes a pair of magnetic assemblies adapted for mutual magnetic engagement. Both assemblies include an outer housing of waterproof material, and a planar surface adapted to impinge o... | 11/23/1999 |
| 5900374 | Cell culture harvesting device The invention concerns a cell culture harvesting device consisting of a scraper head with a blade and a guide strip, the scraper head and the guide strip being connected with one another only by magnetic attraction. The magnetic attraction is achieved by ... | 05/04/1999 |
| 5515570 | Manually operated magnetic window wiper A tool for wiping windows by means of a ceramic rectangular permanent magnet, or magnets, which has wiper blades attached. This unit is called the slave unit. On the opposite side of the window surface is a ceramic rectangular permanent magnet or magnets,... | 05/14/1996 |
| 4977637 | Magnetic window cleaning apparatus Inside and outside window surface cleaning units contain magnets disposed adjacent to respective base walls. All magnets of the inside unit have the same polarity surfaces adjacent to the base wall. All magnets of the outside unit have all magnets with th... | 12/18/1990 |
| 4921614 | Aquarium cleaning and filtering system and method A system and method for removing waste and debris from an aquarium tank and from the water supply therein without having to empty the tank or remove the fish therefrom. The apparatus comprises a movable cleaning means positioned adjacent the bottom surfac... | 05/01/1990 |
| 4144091 | Window wipe A window wipe suitable for wiping the outer surface of a windowpane is provided with a magnet on the inner surface of the pane, a magnetized cleaning element on the outer surface of the pane and a container on the outer surface for storing the cleaing ele... | 03/13/1979 |
| 3983591 | Cleaning device Two cleaning elements, each having a magnet and a brush, are arranged outside and inside of a windowpane. The cleaning elements attract each other by magnetic force through the windowpane and they move simultaneously when one of them is moved in operation... | 10/05/1976 |
