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| Number | Title | Issue Date |
| 7371321 | Fluid filtration system A filtration system (10) for removing contaminants from a fluid is provided. The system includes a housing (44) having a convex shaped base (78) and a top (84), with filter media (46) disposed within the housing. The filter media m... | 05/13/2008 |
| 7093720 | Filter device for garden ponds or similar A filter device for filtering flowing liquids comprises a compressible filter medium in a vessel and a device by which the filter medium can be compressed by means of an actuation handle, so that impurities can be pressed out of the filter medium. In addition, the f... | 08/22/2006 |
| 7094339 | Liquid-treating method In the method, an adapter is substituted for the filter-enclosing cap of a conventional in-line strainer device to permit introduction into a plumbing system of a flushing solution withdrawn from an independent supply. The method is typically used for introducing an... | 08/22/2006 |
| 7089960 | Ball valve The present invention is a ball valve which may be attached to a fluid pipe for connection/disconnection between an entrance and an exit. More particularly, the present invention is a ball valve having a discharge orifice communicating with ambient air in addition t... | 08/15/2006 |
| 7032760 | Backwash flushing filter An inline backwash, flushing filter assembly comprising a header assembly, a rotatable valve assembly, and a filter element assembly disposed within a filter housing assembly. In operation, the controller moves the turn knob of the rotatable valve assembly a one-qua... | 04/25/2006 |
| 6733666 | Filtering device, especially a suction return filter A filtering device, especially a suction return filter includes a filter housing having two useful connections and a tank connection, and accommodates at least one filter element. The filter housing also provided with three return valves, two of which are held in th... | 05/11/2004 |
| 5853584 | Self-cleaning filter for filtering of liquids and gases A filter for filtering of a fluid, including a housing having an inlet port for the fluid to be filtered, an outlet port for filtered fluid and an outlet port for filtered fluid and an outlet port for rehect, In a body arranged in the housing to be rotata... | 12/29/1998 |
| 5792373 | Backwash filter system A backwash filter system includes a filter array comprising a plurality of filter units each having a housing, a filter element unit and a process liquid inlet port and a filtered liquid outlet port connected respectively with process liquid inlet and fil... | 08/11/1998 |
| 5685981 | Water filter A water treatment or filtration unit is in two parts, a base and a cartridge. The base includes three ports, one of which may be selectively plugged or otherwise disabled. The cartridge contains the water treating material and is screwed into a socket in ... | 11/11/1997 |
| 5217611 | System and apparatus for the mechanical cleaning of water surfaces, even in the open, from floating pollutants The apparatus has two portions wherein the first conveying portion functions to deflect and concentrate a large strip of the surface floating pollutant to be recovered, towards a narrower throat or exit section, and the second recovery portion effects the... | 06/08/1993 |
| 5139654 | Liquid collector pressurizing and filtering means Apparatus for quickly taking and filtering liquid taken from a body of liquid comprises a bailer for taking and containing a sample of the liquid therein. The bailer has an upper end portion adapted for quickly disconnecting and connecting a liquid pressu... | 08/18/1992 |
| 5017286 | Faucet-mounted water filter with wall inlet and annular chamber The invention provides a faucet-mounted water filter comprising an upright tubular diverter body that is adapted to be secured to the open end of the water faucet. At the bottom of the diverter body is a water outlet through which unfiltered water can be ... | 05/21/1991 |
| 4895655 | Filtration apparatus The invention concerns a filtration apparatus comprising a vessel divided into two chambers by a filter. An inlet orifice is provided in the vessel for liquid to be filtered, as well as an outlet orifice for the filtered liquid. A distributor device movab... | 01/23/1990 |
| 4882045 | Dispersal apparatus with rotation valving A device (10) for filtering and directing effluent to one of a plurality of angularly spaced drainfield trenches. The device (10) includes a housing (12) in which a core (14) is received. A filter medium (18) is inserted within the core (14) and extends a... | 11/21/1989 |
| 4808303 | Produce hydration system The present invention represents an automatic produce hydration system of improved efficiency and design. The system is self-contained, and adaptable for use in both pre-existing and new produce display racks. The system first includes a filter unit desig... | 02/28/1989 |
| 4806258 | Straining and stop valve A fluid filtering stop valve having a body with a cylindrical chamber having a circumferential sidewall with inlet, outlet and flush ports, and a cylindrical plug member rotatably disposed in the chamber. The plug member has spaced apart first and second ... | 02/21/1989 |
| 4735716 | Quick-change filter cartridge and head therefor A filtering device includes a head intended to be permanently installed in a fluid dispensing machine and a disposable canister therefor. A central chamber is formed in the head which chamber is in communication with an inlet port and an outlet port for r... | 04/05/1988 |
| 4732674 | Water purifier A water purifier houses a material for water treatment. The water purifier employs an active carbon as this water purifying material, and this active carbon has pores on the surface of which water soluble mineral component is provided.... | 03/22/1988 |
| 4680116 | Water purifier apparatus A water purifier apparatus for removing the bleaching agent, the smell of an adhesive used in joining water pipes, and other impurities from water supplied through a water supply system. The water purifier apparatus includes a body having a raw water outl... | 07/14/1987 |
| 4648971 | Flow through filter with backflush clearing capability A filter consisting of a housing, a rigid, porous filtering element, means for forming a primary filter path along the filtering element, and a non-rigid expanding element, wherein when a solution to be filtered flows through the primary flow path, filtra... | 03/10/1987 |
| 4592848 | Flow through filter with backflush clearing capability A flow-through filter including a two-stage valve head assembly and a filtering body which is designed to provide a helical flow path for the solution over a cylindrical porous filter which captures the particulate matter contained by the solution being f... | 06/03/1986 |
| 4442002 | Filtration devices A rotary filter for polymers comprises an inward flow filter drum mounted in a housing and consisting of inner and outer filter barrels 7 and 6 which retain between them a cylindrical filter element 8 of wire gauze or porous sintered metal. The outer barr... | 04/10/1984 |
