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| Number | Title | Issue Date |
| 7011755 | Disposable vacuum filtration funnel with integral prefilter A filtration funnel with integral prefilter usable for filtering fluids. The integral prefilter is disposed above the final filter which is sealed to the funnel. The prefilter may contain one or more layers of prefilter material, and is sealed to the funnel with one... | 03/14/2006 |
| 6991112 | Disposable filter cartridge An improved disposable filter cartridge for use in a filter housing includes a pleated filter member and first and second plastic end caps mounted to the ends of the filter member. The first end cap has an inner edge defining a central opening. In one embodiment, an... | 01/31/2006 |
| 6971526 | Filter cloth connector A method is provided for fixedly joining a cloth, a cloth-like fabric or a synthetic mesh to a filter plate using a flanged cloth connector ring. The flanged cloth connector ring is attached to the filter cloth around the feed port of the cloth and inserted into a r... | 12/06/2005 |
| 6729477 | Fluid filter retainer and seal apparatus A sealing ring is anchored to a filter retainer included in a fluid filter assembly. An insert-molding process is used to anchor the sealing ring to the filter retainer. ... | 05/04/2004 |
| 6706087 | Filter body of a fluid filter, especially an air filter A filter body of an air filter, comprising a cylindrical filter member with an end disk on at least one axial end. This end disk comprises a radially effective seal which is arranged radially in relation to the arrangement on a sealing surface when the filter body i... | 03/16/2004 |
| 6620316 | Modular system for putting together different sized filter elements A modular system for putting together different sized filter elements, especially filter elements having different lengths, more particularly filter devices for hydraulic fluids, comprising a support tube that defines an inner cavity in the corresponding ... | 09/16/2003 |
| 6595372 | Filter device A filter device includes a tubular casing [10] with a closed bottom, a filter element [20] received within the casing [10], a lid [30] which closes an open end of the casing [10], and has a communication hole communicating the inside and outside of the ca... | 07/22/2003 |
| 6588602 | Sealing gasket arrangement for spin-on filter cartridges A spin-on filter cartridge adapted to be mounted on a filter mount has a housing with an open end and a closed end. Adjacent to the closed end of the housing is a crimped portion defining an annular groove, the crimped portion retaining an annular support... | 07/08/2003 |
| 6547255 | Fluid seals A fluid seal for sealing a joint between two components in a fluid line has an integral filter. The seal has sealing portions on each side of the filter that are compressed by relative axial movement of the components to effect a fluid-tight seal therebet... | 04/15/2003 |
| 6471071 | Universal grommet seal for spin-on type filters An improved sealing grommet for a spin-on type fluid filter has an annular flange coupled to an interior wall of the grommet body which sealingly engages filter adapter standpipes of varying diameters. An annular cavity, formed by the interior wall of the... | 10/29/2002 |
| 6364121 | Filter cartridge with grommet spring A filter cartridge for use with a base to create a filter assembly. The filter cartridge includes a seal to establish a fluid flow within the filter assembly and a resilient bias member to bias the filter cartridge away from the base. The resilient bias m... | 04/02/2002 |
| 6352266 | Seal for a liquid chromatography column A liquid chromatography seal capable of withstanding pressures in excess of 8000 to 10,000 psi utilizing an annular ring disposed upon either the seal or the seal seating surface. The annular ring is triangular in cross section. The triangular cross secti... | 03/05/2002 |
| 6296255 | Sealing mechanism for sealing a vacuum chamber A sealing mechanism comprises a support member forming part of the semiconductor producing apparatus which has a vacuum chamber, a rotation shaft rotatably received in the support member, and at least three seal rings axially spaced apart from each other ... | 10/02/2001 |
| 6257587 | Radial lip seal having protected porous dust excluder A shaft seal assembly includes an outer stationary carrier, an inner member, and a sealing system including a primary lubricant-retention seal that is fixed to the carrier in combination with a number of debris-excluding seal features. Such features inclu... | 07/10/2001 |
| 6136192 | Filter bag and sealing ring therefor A sealing ring for use in connection with a filter bag assembly of a filter is disclosed. The sealing ring includes an annular body having an outer annular wall projecting from the body. The outer wall is flexible such that it can engage an adjacent surfa... | 10/24/2000 |
| 6135460 | Method of and apparatus for purifying reduced pressure process chambers Gas purification resins are encapsulated in deformable, permeable polymer sheaths to form purification rings, gaskets or seals. A primary source of contaminants in advanced vacuum processors equipped with vacuum load-lock systems and process gas purifiers... | 10/24/2000 |
| 6073937 | Composite top plate for a fluid filter and an associated method for forming a composite top plate adapted for attachment to a fluid filter A composite top plate and methods for manufacturing same are described. The top plate includes a metal insert and a non-metallic member. The metal includes a central portion and a flange portion having cut outs to provide an intermittent surface. The non-... | 06/13/2000 |
| 6019229 | Self-centering, floating retainer for spin-on filter A fluid filter for filtering a circulating fluid includes an outer shell having a closed first end and opposite thereto an open second end which is defined by a peripheral edge. The outer shell further includes a surrounding sidewall which defines a hollo... | 02/01/2000 |
| 5904357 | Fluid filter seal arrangement A seal arrangement for a fluid filter assembly which is constructed and arranged to threadedly mount onto an engine block mounting base includes an inner seal and an outer seal. The fluid filter assembly includes an outer shell, a filtering element locate... | 05/18/1999 |
| 5758882 | Screened gasket for high pressure fluid transmission applications A screened gasket for sealing a junction and filtering fluid flowing through the junction includes a sandwich-type structure with first and second gasket members holding a central screen securely therebetween. An inner seal annularly surrounds the screen ... | 06/02/1998 |
| 5722456 | Hydraulic unit A hydraulic unit is connected with a control plate of a transmission with the use of a sealing element. The sealing element performs in addition to its sealing function for sealing the hydraulic passages from one another and from outside, also a parallel ... | 03/03/1998 |
| 5643026 | Safety device for seal systems for propeller shafts on ships A safety device on an aft seal system equipped with at least two gaskets for a ship's propeller shaft, which propeller shaft is sealed with respect to the outside water and with respect to a lubricant chamber, and on which a ring-shaped chamber is reserve... | 07/01/1997 |
| 5636847 | Dual face seal clean barrier fluid and dynamic pressure control system A seal arrangement for a stuffing box, the stuffing box having an outboard seal an inboard seal exposed to process fluid, and a volume pressurized with barrier fluid in which the inboard seal and the outboard seal are disposed, has a container divided int... | 06/10/1997 |
| 5582411 | Scavenging compound infiltrated gasket An improved gasket with scavenging capabilities for sealing two relatively stiff mating pieces of an enclosure. The gasket comprises a flexible compressible gasket member shaped to fit between the mating pieces. The gasket member comprises a porous materi... | 12/10/1996 |
| 5533737 | Seals with particle exclusion means A particle exclusion assembly designed to operate in an inclined position and to protect an associated sealing assembly. The assembly includes radially inner and outer relatively rotatable walls and axially inner and outer baffles and a rotary, controlled... | 07/09/1996 |
| 5529319 | V-notch seal for non-flooded zone of disc filter valve A circumferential seal for a disc filter valve to rotary collection pipe is formed by a radially compliant circumferentially restrained and tensioned seal disposed in a split "V" notch formed in a non-flooded zone between the stationary valve plate and th... | 06/25/1996 |
| 5525226 | Preformed gasket with retaining tabs A resilient molded gasket adapted to be received in a preformed annular groove having an inner sidewall formed at an oblique angle relative to the base of the groove and having an enlarged area defined at the junction of the inner sidewall and the base. T... | 06/11/1996 |
| 5513918 | Roller element bearing with water repellent filter seal A rolling element bearing, comprising bearing rings with rolling elements between the bearing rings, and a filter seal extending between the rings for closing a space between the rings. Said filter seal is oil permeable and water repellant. Hydrophilic ch... | 05/07/1996 |
| 5509666 | Protected seal assembly and protective filter unit therefor A protective filter unit for use with a fluid seal assembly. The filter unit includes a screen positioning unit and a filter screen extending inwardly of portions of the positioning unit and terminating in an inner screen edge spaced just apart by a worki... | 04/23/1996 |
| 5507498 | Sealing device for polymer filtration apparatus A sealing device for sealing a slide plate translatable across an extrusion bore in a polymer filtration apparatus includes an annular seal having a sealing surface which is biased against the slide plate by an annular spring. The seal has a thrust surfac... | 04/16/1996 |
| 5492416 | Rolling element bearing system with a filtering seal A rolling element bearing system comprises at least one rolling element bearing with an outer race and an inner race which enclose a space containing rolling elements, which space is confined to the outside by sealing rings. At least one of the sealing ri... | 02/20/1996 |
| 5480161 | Shaft seal with controlled porosity elements A labyrinth type seal assembly having one or more controlled porosity elements retained in the labyrinth pathway between relatively rotatable seal elements. Preferably the controlled porosity elements are formed of open celled foam material such as polyur... | 01/02/1996 |
| 5472072 | Filtering breathable protective boot for a telescoping bicycle suspension A breathable protective filtering boot structure for a telescoping bicycle fork suspension comprises a generally cylindrical bellows-like rubber-like boot for each of a pair of fork legs which telescope along parallel vertical axes. Each boot is secured a... | 12/05/1995 |
| 5456475 | Protected seal assembly and protective filter unit therefor A protective filter unit for use with a fluid seal assembly. The filter unit includes a screen positioning unit and a filter screen extending inwardly of portions of the positioning unit and terminating in an inner screen edge spaced just apart by a worki... | 10/10/1995 |
| 5372730 | Filtering system for pump shaft seals A filtering system for a pump shaft seal includes a filter for preventing abrasive, fibrous, or other solid materials from entering the region of the stuffing box of the pump in the proximity of the seal. The filter is mounted on the pump shaft between th... | 12/13/1994 |
| 5301958 | Seal for spin-on filter having circumferential retaining groove A seal for a spin-on filter of the type including an outer housing having a closed end and an open end, an end cover provided in the open end and a filter element disposed within the housing, the filter being adapted to be attached by screw threads to a m... | 04/12/1994 |
| 5279734 | Filtration system A filtration system for use in a settling tank includes a star shaped filter having equally spaced radial panels with the filter septums forming the downwardly extending sidewalls of each panel or compartment. The framework of the filter allows radial rem... | 01/18/1994 |
| 5271629 | Radial shaft sealing ring A radial shaft sealing ring has a filtering device which is disposed upstream of main seal. The filtering device comprises a sealing lip 3 which surrounds the shaft to be sealed with a cylindrical surface 5 spaced radially apart at a distance D, this gap ... | 12/21/1993 |
| 5219434 | Sealing arrangement for rotating propeller shafts of ships A seal arrangement for rotating shafts, in particular a propeller shaft of a ship which is in contact with water containing impurities, is designed to provide a filter portion substantially adjacent the outermost seal to thereby filter dirt particles out ... | 06/15/1993 |
| 5195320 | Piston-cylinder assembly particularly useful in stirling cycle machines A piston-cylinder assembly in which the piston includes two piston heads connected together in spaced relation by a stem and cooperable with two portions of the cylinder, dividing the cylinder into a working chamber on one side of the first piston head be... | 03/23/1993 |
