Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7371322 | Filtration system and dynamic fluid separation method A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. The filtration system may include one or more porous membranes which are anchored or secured on their periphery with a large open work... | 05/13/2008 |
| 7335298 | Modular aquarium filter A modular aquarium filter includes one or more cartridges connected in series. The cartridges may contain filter media for chemical, biological and/or mechanical filtration. In addition, the cartridges are designed such that they provide a unique internal helical ge... | 02/26/2008 |
| 7255786 | Skimmer with rotatable filter cartridge for spas and pools A pool/spa skimmer includes a housing, a face plate, and a flexible weir gate. The housing and plate are dimensioned to allow water to flow in a vertical column. The interior of the housing has a curved wall so that when a column of water passes through the open gat... | 08/14/2007 |
| 7220353 | Skimmer with rotatable filter cartridge for spas and pools A pool/spa skimmer includes a housing, a face plate, and a flexible weir gate. The housing and plate are dimensioned to allow water to flow in a vertical column. The interior of the housing has a curved wall so that when a column of water passes through the open gat... | 05/22/2007 |
| 7208084 | Modular aquarium filter A modular aquarium filter includes one or more cartridges connected in series. The cartridges may contain filter media for chemical, biological and/or mechanical filtration. In addition, the cartridges are designed such that they provide a unique internal helical ge... | 04/24/2007 |
| 7125486 | Device for removing small solids from water in canal There is disclosed a device for removing small solids from water. The device includes an axle and a plurality of rotational filtering units installed on the axle. While rushed and hence rotated by water and small solids, the rotational filtering units filter the sma... | 10/24/2006 |
| 7083735 | High debris content strainer A high debris content strainer that utilizes a cylindrically-shaped screen having four removal assemblies positioned evenly around the screen periphery. Each removal assembly includes a backwash spray bar on the downstream side of the screen and a scraper/brush and ... | 08/01/2006 |
| 7060182 | Hand-held pool cleaner A hand-held, electrically-powered pool cleaner includes a body and a nozzle for suctioning pool water. The body has a filter, an impeller and motor, rechargeable batteries, and a handle for carrying the body and for maneuvering the nozzle along a surface being clean... | 06/13/2006 |
| 7033499 | Flexible disposable vessel A disposable flexible vessel contains a septum, dividing a first chamber from a second chamber. By flowing a fluid through the septum, the fluid is treated as it moves from the first chamber to the second chamber. The particular configuration of the septum allows fo... | 04/25/2006 |
| 7000781 | Filtering device The invention relates to a filtering device for taking a filtrate sample from liquid matter containing solid particles. The filtering device comprises two filter parts and at least one filtering slot between the filter parts. The filter parts are adapted to move in ... | 02/21/2006 |
| 7001506 | Self-cleaning circulatin system and method The present invention provides a system and method for providing a self-cleaning water circulation system which may be utilized for a fish pond, fountain, or the like. Means for automatically cleaning the pump intake to avoid pump failure due to leaves and debris is... | 02/21/2006 |
| 6976592 | Liquid/solids waste separator A liquid/solids waste separator apparatus for use in separating animal waste or waste water into filtered liquid and collected solid waste particles. It has an elongated housing having a pair of support legs attached adjacent to the rear end of the housing for varyi... | 12/20/2005 |
| 6926839 | Method and apparatus for removing particulate contaminants from commercial laundry waste water A filtration apparatus includes a filter element disposed at a 45 degree angle defining an upper chamber for solids and a lower chamber for liquid. A trough is disposed at the lower end of the filter element. The floor of the trough funnels toward a central drain an... | 08/09/2005 |
| 6540914 | Cleanable filter with spinning screen A fluid filter which comprises a canister having an open end and a closed end, the canister sealing to an adapter body to prevent leakage between the canister and the adapter body, the adapter body having a plurality of fluid inlet ports extending through... | 04/01/2003 |
| 6419826 | Self-cleaning filter Improved self-cleaning filter, comprised of a casing (1) with an entry (2) for water towards an encircling chamber (5), a filtering element based on a plurality of grooved disks (10), an axial passage (14) in the breast of these disks and an axial exit (9... | 07/16/2002 |
| 6398038 | Filtration system utilizing a vortex mechanical power filter A vortex mechanical power filter includes a filter unit 12 arranged within a vortex tank 10 such that water to be filtered, e.g. flowing from a from a fish pond via gravity supply line 22, impinges upon a side of the filter unit at an angle to cause rotat... | 06/04/2002 |
| 6398037 | Reverse flow spin-cleaning liquid filters A liquid filtering device having a pack of cylindrical filter member discs (70) with an arrangement for reversed, filter flushing flow cycles. An integrally formed filter core (24) is provided comprising tubular nozzled conduits (30a, 30b, 30c) so that wa... | 06/04/2002 |
| 6287464 | Oil filter assembly An oil filter assembly comprises: a cylindrical main housing having an open upper end; a cover assembled with an upper end thereof; an impeller housing disposed beneath a lower surface thereof; a mixer disc fixedly inserted in the impeller housing; an imp... | 09/11/2001 |
| 6221255 | Ultrasound-assisted filtration system A system wherein an ultrasound emitter, or gun, is provided which emits an ultrasound beam directed at filter media, on the opposite side of the filter media from where solids accumulate, in order to knock the solids from the filter media. Dislodged solid... | 04/24/2001 |
| 6217756 | Drain grate responsive to high flow rates of water A drain grate in an opening to a drain system which retains trash and debris upstream from the opening while permitting slow flow of water, and which opens completely when confronted with high rates of flow.... | 04/17/2001 |
| 6143187 | Fluidized bed filter for an aquarium Improved fluidized bed filters are described and claimed. The filters are exemplified for use in aquarium systems. A preferred embodiment of the filter of the subject invention comprises a cylinder having an inlet port. Water is pumped into the inlet port... | 11/07/2000 |
| 6059970 | Membrane separation device A membrane separation device is disclosed having a cylindrical membrane support (4), which is sealed off between a top plate (26) and a bottom plate (28), whereon the cylindrical outer surface of the membranes support a membrane (6) is located, and which ... | 05/09/2000 |
| 6033558 | Self-gush-cleaning filter device A self-gush-cleaning filter device comprises a filter casing (1) provided with an inlet passage (a) and an outlet passage (d), a screen (11) disposed within the filter casing (1) so as to slide along the inner surface of the filter casing (1) in the flowi... | 03/07/2000 |
| 5984108 | Fluid filtering system with variable filter layer A permanent fluid filtering system includes a cylindrical body having an upper end, to which an inlet tube is connected, and a lower end, to which an outlet tube is connected, and a latitude thread filter assembly disposed within the cylindrical body. The... | 11/16/1999 |
| 5919376 | Filtration apparatus and method An improved filtration system comprises a vessel divided into a concentrate chamber and a permeate chamber by a permeable septum. An ultrasonic wave generator is mounted to the vessel and positioned to direct ultrasonic waves through both the permeate con... | 07/06/1999 |
| 5858217 | Multiple tube filter with spraying device The invention pertains to a tube filter device for the filtration of beer. In order to ensure a dependable, simple, time-saving and water-saving purification in a device of this kind, there is an inlet line underneath the tube filter with at least one rotary s... | 01/12/1999 |
| 5707519 | Centrifugal oil filter with particle retention A centrifugal oil filter includes a housing having a rotatable bowl disposed in a first fluid chamber and rotatably disposed about a shaft extending through the first fluid chamber. The rotatable bowl has a flow directing member connected generally at the... | 01/13/1998 |
| 5626744 | Pressure sensitive extended life filter Disclosed is a porous device adapted to remove particulates from a fluid passed through the device. The device includes a porous filtration medium. The medium has a first surface having an area which is adapted to receive the fluid for passage through the... | 05/06/1997 |
| 5516426 | Self-cleaning filter system A continuous, self-cleaning rotary filtering system is herein provided which includes a plurality of filtering elements within a rotatable filter housing adapted for rotation between an inlet plate having single or multiple inlet ports and an outlet plate... | 05/14/1996 |
| 5425876 | Gravity screen filter with dynamic backwash A self-cleaning gravity screen for removing particulate material from a liquid stream. The screen slopes, and beneath it a rotary wand sweeps against its lower side to keep the screen perforations open and assist movement of retained solids along the scre... | 06/20/1995 |
| 5384045 | Filter cleaner A dirty swimming pool filter is journaled for rotation about a vertical array of nozzles and spun about a vertical axis by the action of the spray. The rotation can be fast enough that centrifugal forces aid in the cleaning operation by sloughing dirt off... | 01/24/1995 |
| 5376268 | Rotary filtering apparatus A rotary filtering apparatus basically comprises a tank having inner surfaces comprising an upper part which is cylindrical and a lower part which is conical, wherein a diameter thereof decreases toward the lower part of the tank. A sintered metallic filt... | 12/27/1994 |
| 5304312 | Filter assembly includng filter unit having deformable sealing end caps A sealed filter unit is provided having end caps which engage fluid connectors which are in turn connectable to external piping conveying fluid through the filter and which provide a preliminary seal upon mounting the filter unit in the filter holder. The... | 04/19/1994 |
| 5207930 | Filtration system with helical filter cartridge A filtration system utilizing a helical cartridge wherein the differential in pressure between the pressure inside and the pressure outside of the helix is effective in controlling the spacing between the coils of the helix. Each coil of the helix is prov... | 05/04/1993 |
| 5152895 | Method for cleaning filter elements and filter for implementing it In relation to time intervals or pressure loss, the successive flushing via the same flushing channel (10) of several filter elements (7) is brought about by the direct sweeping of the internal surface of said elements (7) by the fluid to be filtered. It ... | 10/06/1992 |
| 5149428 | Water filter with extended operational period A water filter with improved filtration efficiency and extended operational period. The filter includes a cassette member filled with filtration and activation agents, where a water path connecting a water inlet pipe and an open upper end of the cassette ... | 09/22/1992 |
| 5145580 | Apparatus comprising a tube bundle mounted in a shell and undergoing differential thermal expansion therewith The invention relates to an apparatus which comprises a plurality of tubes made of a first material, which tubes are mounted inside a cylindrical body or shell made of a second material, which second material undergoes differential thermal expansion in re... | 09/08/1992 |
| 5060483 | Twin rinse columns for freeze concentration of rinsable concentrates An automatic apparatus for the continuous freeze concentration of liquids. The apparatus includes a heat exchanger for freezing the liquid to form a slurry of ice crystals and concentrated liquid. Communicating with the heat exchanger via a line or pipe i... | 10/29/1991 |
| 4941971 | Apparatus for mounting in an aqueous system, a cartridge filter for filtering the system and in place cleaning the filter A horizontally mounted cylindrical container is adapted to mount through demountable end plates a cartridge filter in the container through demountable end plates for rotation around a lower axis than the center axis of the container. The combination of c... | 07/17/1990 |
| 4936989 | Filter with dual fluid pressure actuated valves on common stem A filter in which liquid flows through a plurality of filter elements wherein each filter element has a pair of valves for closing off the ends of the filter elements in turn for filtering and backwashing. The valves are mounted on a common stem operated ... | 06/26/1990 |
