...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7810650 | Faucet mounted water filter system A faucet mounted water filtration system includes a base defining an inlet and a plurality of outlets. The base at least partially defines a filter compartment configured to house a filter cartridge. A first valve assembly is positioned within the base and defines a... | 10/12/2010 |
| 7617939 | Faucet mounted water filter A faucet mounted water filtration system includes a base having an inlet, a water receiving chamber, and at least one outlet. The inlet is configured to be coupled to a faucet. A body is coupled to the base. The body includes a filter compartment configured to house... | 11/17/2009 |
| 7427352 | Fluid purifier having magnetic field generation A fluid purifier includes a filter having a chamber of reduced cross section formed either between an inner wall and an outer wall or within the inner wall. A ceramic layer of granular ceramic particles and at least a pair of magnetic layers each comprising an annul... | 09/23/2008 |
| 7378018 | Intersecting water conducting filter An intersecting water conducting filter including a filter main body. An oblique tapered assembly chamber is formed in the filter main body. A sidewall of the assembly chamber is formed with multiple insertion grooves in each of which a water conducting layer is inl... | 05/27/2008 |
| 7354512 | Pool filter backflush trap A pool filter backflush trap comprising a filter member having an opening for receiving water and contaminants from a backflush discharge tube. The filter member forming an enclosure about the backflush discharge tube and having a surface area of sufficient size to ... | 04/08/2008 |
| 7326334 | End-of-faucet filter Various embodiments of an end-of-faucet filter assembly connectable with a faucet on a standard sink and having a plurality of outlets corresponding with selectable modes of operation are disclosed herein. One mode of operation provides unfiltered, aerated water dis... | 02/05/2008 |
| 7267289 | Shrouded hose filter A water-deflecting shroud. In one embodiment, the water-defelcting shroud comprises a detachable parabolic shield to confine a rupture from a lint filter disposed within the parabolic shield, the parabolic shield configured to modify the rupture in the direction of ... | 09/11/2007 |
| 7235176 | Shower head with water purification function A shower head for purifying water includes a filter cartridge positioned within in a holding part, a purified water flow path passing through a purification material and a raw water flow path not passing through the purification material. A flow path switching valve... | 06/26/2007 |
| 7217362 | Water filter The present invention relates to a water filter including an outer connector, an inner connector, a flow control sheet and a strainer. A flange extends from the periphery of the upper surface of the outer connector with at least two protrusions extending therefrom. ... | 05/15/2007 |
| 7182858 | Multiple barrier filter apparatus A filter apparatus is provided which includes a first filter membrane element (40a), and a second bacterial filter membrane element. The first viral filter element (40a) is capable of treating water at a first second flow rate and is adap... | 02/27/2007 |
| 7143897 | Water filter A showerhead having a replaceable water filter assembly. The showerhead having a compact body with releasably coupled pivotable element connected to the water filter assembly. ... | 12/05/2006 |
| 7097122 | Filtered shower arm A combination shower arm and water filter having an integrated design for attachment between a shower wall and a showerhead. The combination shower arm and water filter includes a housing having a number of components that may be easily manipulated, and which may be... | 08/29/2006 |
| 7094334 | Water filter having a filter use time indicator The described embodiments of the present invention include a water filter having a float portion with a magnet that moves up and down due to water flow to activate a switch for tracking the use time of the filter. ... | 08/22/2006 |
| RE39142 | Filtered showerhead A showerhead having a water filter element held therein. The water filter element is easily changeable by unscrewing two halves of a body forming the showerhead. The body halves are easily gripped and turned, so as to be opened or closed, and the showerhead preferab... | 06/27/2006 |
| 6994277 | Accessory for faucet An accessory is easily attached to a faucet and is easily manipulated to increase the pressure of water flowing from the faucet. The accessory includes two plates, one of which is movable relative to the other one. Each plate has a plurality of water flow holes thro... | 02/07/2006 |
| 6966443 | Paraffin filter element A paraffin filter for a paraffin spa includes a first end cap and a second end cap with a filter medium sandwiched therebetween. Each end cap is disk-like body having a respective tubular connection for the input or output of melted paraffin, thus providing a low pr... | 11/22/2005 |
| 6955266 | Strainer A conduit has a first end and interior and exterior surfaces extending downstream from the first end. A strainer has a first end and a second end. An upstream portion of the strainer is positioned engaging a projection on the interior surface of the conduit to resis... | 10/18/2005 |
| 6951286 | Showerhead and filter assembly A showerhead assembly includes a filter that is removably receivable by the showerhead. The showerhead includes a receiving opening defined within the downstream face of the showerhead, which opening is functionally adapted to receive the filter within it. The openi... | 10/04/2005 |
| 6932907 | Fluid treatment elements A fluid treatment element comprises a fluid treatment pack including a fluid treatment medium. The fluid treatment pack has a hollow interior and a barrier is disposed in the hollow interior. The barrier separates a blind region in which fluid cannot flow between th... | 08/23/2005 |
| 6926821 | Water treatment device with volumetric and time monitoring features A totalization meter system for a water treatment device, the device having an inlet aperture and an outlet aperture, and a channel for channeling water between the inlet and outlet apertures. A flow reactive device is positioned in the channel and is exposed to the... | 08/09/2005 |
| 6923908 | Filter apparatus A filter apparatus for use in liquid chromatography systems includes a housing component having an open channel formed therethrough for operably receiving fluid transfer tubing in at least a first end thereof, a relatively thin mesh filter component, and a securemen... | 08/02/2005 |
| 6848632 | Pop-up irrigation sprinkler having bi-level debris strainer with integral riser ratchet mechanism and debris scrubber A frusto-conical strainer is mounted on the lower end of a pop-up riser for filtering out debris from water entering the lower inlet end of a surrounding outer housing to prevent clogging of the nozzle orifice or damage to mechanical components within a sprinkler. A... | 02/01/2005 |
| 6797156 | Faucet water treatment A water treatment unit is disclosed which can be mounted directly on the faucet or tap of the user's sink and which contains one or more water treatment media and an operating valve which permits the selection of several operating modes including service, spray and ... | 09/28/2004 |
| 6780316 | Water filtering apparatus with element support A drinking water filter assembly has a filter cartridge which includes a filter element contained in a pressure vessel for unitary disposal, the cartridge received on a base containing attachment fittings for ease in installation and replacement with limited exposur... | 08/24/2004 |
| 6709603 | Split-flow water filtration apparatus and method Embodiments of a method and filter apparatus (10) for filtering and/or treating water are shown and described, each embodiment being for multiple-stage processing of water or other liquid, with storage intermediate between the stages. Preferably, water is pas... | 03/23/2004 |
| 6641717 | Water purifier A water purifier 40 includes a flow meter 42 for measuring the cumulative flow of water through a water purification cartridge 6. The flow meter has an indicator portion 44 that rotates in response to increasing cumulative flow and a graduated portion 46 ... | 11/04/2003 |
| 6571960 | Faucet-mounted water filtration device A fluid filtering device has a housing with a mounting mechanism disposed at the forward end and on the top surface of the housing. A fluid inlet is defined through the housing top surface, and at least one fluid outlet is defined through the housing bott... | 06/03/2003 |
| 6537455 | Elongated hand-held shower head and filter A combination hand held shower head and water filter assembly for removing chlorine and other substances from hot shower water. This assembly includes an elongated filter housing with an elongated shower head pivotably secured thereto by an extended swive... | 03/25/2003 |
| 6517707 | Water treatment device with volumetric and time monitoring features A totalization meter system for a water treatment device, the device having an inlet aperture and an outlet aperture, and a channel for channeling water between the inlet and outlet apertures. A flow reactive device is positioned in the channel and is exp... | 02/11/2003 |
| 6464871 | Faucet assembly with a filtering device disposed in a faucet body A faucet assembly includes a faucet body having an upright portion defining a cartridge receiving chamber. The faucet body further has an inlet passage in fluid communication with the cartridge receiving chamber and connected fluidly to a water supply sou... | 10/15/2002 |
| 6395172 | Water purifying apparatus The water purifying apparatus has a hollow container and a purifying material provided therein. In the purifying material, the ratio by weight of the bulky water-soluble non-crystalline substance and activate carbon is about 1:1.5. The hollow container is... | 05/28/2002 |
| 6350378 | Water quality improver The object of the present invention is to easily produce water having fine clusters and containing little chlorinated material. Said object is attained by a water treating apparatus consisting of a cylindrical body having a water inlet at the upper end an... | 02/26/2002 |
| 6325930 | Filtered showerhead A showerhead having a water filter element held therein. The water filter element is easily changeable by unscrewing two halves of a body forming the showerhead. The body halves are easily gripped and turned, so as to be opened or closed, and the showerhe... | 12/04/2001 |
| 6322696 | Inlet filter for high pressure sprayer An inlet filter includes a cap and a body that are securely connectable to one another. Once connected, these elements form the structural backbone of the filter. Disposed between the cap and body is a transparent cover that allows one to view a filtering... | 11/27/2001 |
| 6284129 | Water treatment device with volumetric and time monitoring features A totalization meter system for a water treatment device, the device having an inlet aperture and an outlet aperture, and a channel for channeling water between the inlet and outlet apertures. A flow reactive device is positioned in the channel and is exp... | 09/04/2001 |
| 6277292 | Split-flow water filtration apparatus and method Embodiments of a method and filter apparatus (10) for filtering and/or treating water are shown and described, each embodiment being for multiple-stage processing of water or other liquid, with storage intermediate between the stages. Preferably, water is... | 08/21/2001 |
| 6267887 | Shower filter for chlorine removal and scale deposit prevention Embodiments of a multi-purpose, replaceable shower/tub filter cartridges are shown and described, the filter cartridges including a carbon block for chlorine removal and a scale-inhibitor media contained in a space inside the carbon block. The filter cart... | 07/31/2001 |
| 6258266 | Faucet mount water filtration device A water filter device mountable on a faucet facilitates water flow in substantially one linear direction through a filtering cartridge which comprises activated carbon or charcoal material. The water filtration device includes a valve assembly for selecti... | 07/10/2001 |
| 6241880 | Self-cleaning faucet filter A self-cleaning faucet filter for filtering particulate matter from a water stream, the filter having a housing with a main discharge orifice and a side spout with a flushing water discharge, the housing having a main discharge passage with a filter membe... | 06/05/2001 |
| 6241103 | Filter cartridge for water treatment device A water filter cartridge including an outer shell, an inlet opening proximate a first end, an outlet opening and a cam extending axially from the first end. Cam is constructed and arranged so as to reset a mechanical flow totalization mechanism in a water... | 06/05/2001 |