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Filter element with sealing members
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PATENTS Patent number: WO 02/097275 Inventor: O. Hofseth Publication date: 5 December 2002
Elastomer and concrete sealing system Applicant: Phoenix AG, Germany This invention relates to a sealing system that is composed of at least two abutting parts, which are made of concrete, reinforced concrete or of another curable material, and comprises a seal profile made of an elastomeric material. The seal profile spans the gap between both parts in a sealing manner and has, inside its base area, at least one anchoring foot that creates, or brings about, a durable fixing in the corresponding part. The abutting parts are, in particular, segments that are assembled to form a tubular tunnel and, to be precise, while forming transverse joints and longitudinal joints. Each segment is provided, on the abutting side, with a seal profile that is durably fixed in the segment by means of at least one anchoring foot. The system is characterized in that the foot is provided, in the profile transverse direction X, with slots that are located at a specific distance from one another in the profile longitudinal direction Y. Patent number: WO 02/097240 Inventor: H. Gutschmidt Publication date: 5 December 2002
Laser coating of a seal surface Applicant: Fortum Oyj, Finland Details are given of a method for coating a seal surface that may be used in the petrochemical industry. It involves a coating layer of a nickelbased material. In the method described by the patent, the coating layer is formed using a laser. The invention also relates to a seal surface that is designed for use at an oil refinery and to which is applied the coating layer (of the nickel-based material. Patent number: WO 02/097161 Inventors: T. Karhinen and J. Lyytinen Publication date: 5 December 2002
Curable silicone rubber composition Applicant: Dow Corning Toray Silicone Co Ltd, Japan, and Dow Corning Asia Ltd, Japan Details are provided of a silicone rubber composition that can be cured at room temperature. It comprises 100 parts by weight of a polydiorganosiloxan mixture that is made up of 20–95 wt% of a polydiorganosiloxane having both molecular terminals capped with dialkoxysilyl groups or trialkoxysilyl groups; 5–80 wt% of a polydiorganosiloxane having a molecular terminal capped with dialkoxysilyl group or trialkoxysilyl group and the other molecular terminal capped with monoalkoxysilyl group, hydrosilyl group, trialkylsilyl group or trialkoxyalkylsilyl group; 0–30 wt% of a polydiorganosiloxane having both molecular terminals capped with monoalkoxysilyl group, hydlosilyl group, trialkylsilyl group or tri-
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alkoxyalkylsilyl group, one or more specified types of alkoxysilanes (or partial hydrolysis and condensation products of these); and an organo-titanium compound. The composition is used as a sealant. Patent number: WO 02/096993 Inventors: M. Yoshitake, K. Okabe and Y. Harimoto Publication date: 5 December 2002
Resilient metallic gasket Applicant: Garlock Inc, USA A gasket assembly is disclosed for use between adjacent flange surfaces, which includes a reusable annular base plate that has an inner periphery and opposed upper and lower surfaces, and a replaceable spring-energized sealing ring that is retained (but can be released) within the inner periphery of the base plate. It also includes a resilient spring element surrounded by a deformable jacket that extends beyond the upper and lower surfaces of the base plate to conform to surface irregularities in the flange surfaces upon compression of the gasket between the flange surfaces. Patent number: WO 02/097309 Inventors: V. Behil, J. Cox and J. Martini Publication date: 5 December 2002
High performance seal Applicant: NOK Corp, Japan A sealing device has been invented which has excellent pressure resistance, is usable at a working pressure of 0–2 MPa, and is not damaged even through the application of high pressure fuel (at 5 MPa or higher). The high-pressure fuel on the high pressure side is sealed by a first sealing part. Oil from a cam side, on a low pressure side is sealed by a second seal part. Fuel that managed to leak through the first sealing part is sealed by the second part, which forms a double seal structure. A resin ring, which comes into contact with a shaft is used in the first seal part, whereby abnormal wear does not occur even if fuel with poor lubrication is used, and the durability of the seal is increased. Patent number: WO 02/099320 Inventors: M. Okada, I. Taira, T. Abiko, Y. Kondo, K. Takeno and I. Yamane Publication date: 12 December 2002
Gas turbine sealing system Applicant: Chromalloy Gas Turbine Corp, USA Details of a gas turbine engine ‘abradeable’ seal system is provided. It comprises an assembly and a cooperating (and interacting) turbine blade. The turbine blade has a tip portion containing cubic boron nitride abrasive particles while the seal assembly has a super-alloy substrate onto which is bonded a coat that has a surface roughness of at least 300 RA. A porous ceramic ‘abradeable’ seal material on the bonded coat has a porosity of 5–15 volume %. Patent number: WO 02/099254 Inventors: P. Howard and R. Shankar Publication date: 12 December 2002
Mixer seal and bearing apparatus Applicant: SPX Corp, USA An assembly for supporting a mixer shaft in an opening in a vessel wall has a support mounted to the vessel wall around the opening, and a seal ring supported by this which engages the circumference of the mixer shaft, creating a seal. A first bearing is mounted to the support that surrounds and supports the mixer shaft at one axial location, while a second bearing is mounted to the support that surrounds and supports the mixer shaft at a second axial location. Patent number: WO 02/098546 Inventor: D.J. Engel Publication date: 12 December 2002
Filter element with sealing members Applicant: Donaldson Co Inc, USA A filter arrangement includes a media construction comprising a corrugated sheet secured to a flat sheet rolled into a coiled construction. A frame and a first seal member are provided. The frame secures the first seal member to the coiled construction. The first seal member is preferably oriented to form a radial seal with a housing. A second seal member is secured to the outer annular surface of the coiled construction. The second seal member includes a gasket extension having first and second opposite ends; an attachment portion; and a protrusion extending from the attachment portion. The second seal member is preferably oriented to form an axial seal with a housing. Air cleaners, preferably utilizing filter arrangements that are described in the patent, can be installed within housings. Methods of installing, filtering, assembling, and servicing are also described by the patent. Patent number: WO 02/098539 Inventors: J. Xu, J.D. Kuhn, E.J. Kreitinger, W.R.W. Bishop and S.S. Gieseke Publication date: 12 December 2002
Pigmented powder paint suspensions Applicant: BASF Coatings AG, Germany This invention relates to pigmented powder paint dispersions (pigmented powder slurries), which can be produced by mixing at least two liquid components, each of which contains at last one liquid starting product, in a static mixer, so that a liquid is obtained. The resulting liquid is then emulsified in an aqueous medium in a dispersing unit, so that an aqueous emulsion of liquid particles is obtained. The emulsion is then allowed to cool to create a suspension of dimensionally stable particles. The aqueous medium represents the suspension of at least one pigment. The invention also relates to a method for the production of such suspensions and to their use as coatings, adhesives and sealants or in the production of these. Patent number: WO 02/098993 Inventors: J. Berg, W.-A. Jung, M. Mauss, H.-J. Weintz, R. Polke, M. Stang, H. Heiko and R. Bayer Publication date: 12 December 2002
Sealing Technology February 2003
06/02/2003
13:55
Page 12
PATENTS Patent number: WO 02/097275 Inventor: O. Hofseth Publication date: 5 December 2002
Elastomer and concrete sealing system Applicant: Phoenix AG, Germany This invention relates to a sealing system that is composed of at least two abutting parts, which are made of concrete, reinforced concrete or of another curable material, and comprises a seal profile made of an elastomeric material. The seal profile spans the gap between both parts in a sealing manner and has, inside its base area, at least one anchoring foot that creates, or brings about, a durable fixing in the corresponding part. The abutting parts are, in particular, segments that are assembled to form a tubular tunnel and, to be precise, while forming transverse joints and longitudinal joints. Each segment is provided, on the abutting side, with a seal profile that is durably fixed in the segment by means of at least one anchoring foot. The system is characterized in that the foot is provided, in the profile transverse direction X, with slots that are located at a specific distance from one another in the profile longitudinal direction Y. Patent number: WO 02/097240 Inventor: H. Gutschmidt Publication date: 5 December 2002
Laser coating of a seal surface Applicant: Fortum Oyj, Finland Details are given of a method for coating a seal surface that may be used in the petrochemical industry. It involves a coating layer of a nickelbased material. In the method described by the patent, the coating layer is formed using a laser. The invention also relates to a seal surface that is designed for use at an oil refinery and to which is applied the coating layer (of the nickel-based material. Patent number: WO 02/097161 Inventors: T. Karhinen and J. Lyytinen Publication date: 5 December 2002
Curable silicone rubber composition Applicant: Dow Corning Toray Silicone Co Ltd, Japan, and Dow Corning Asia Ltd, Japan Details are provided of a silicone rubber composition that can be cured at room temperature. It comprises 100 parts by weight of a polydiorganosiloxan mixture that is made up of 20–95 wt% of a polydiorganosiloxane having both molecular terminals capped with dialkoxysilyl groups or trialkoxysilyl groups; 5–80 wt% of a polydiorganosiloxane having a molecular terminal capped with dialkoxysilyl group or trialkoxysilyl group and the other molecular terminal capped with monoalkoxysilyl group, hydrosilyl group, trialkylsilyl group or trialkoxyalkylsilyl group; 0–30 wt% of a polydiorganosiloxane having both molecular terminals capped with monoalkoxysilyl group, hydlosilyl group, trialkylsilyl group or tri-
12
alkoxyalkylsilyl group, one or more specified types of alkoxysilanes (or partial hydrolysis and condensation products of these); and an organo-titanium compound. The composition is used as a sealant. Patent number: WO 02/096993 Inventors: M. Yoshitake, K. Okabe and Y. Harimoto Publication date: 5 December 2002
Resilient metallic gasket Applicant: Garlock Inc, USA A gasket assembly is disclosed for use between adjacent flange surfaces, which includes a reusable annular base plate that has an inner periphery and opposed upper and lower surfaces, and a replaceable spring-energized sealing ring that is retained (but can be released) within the inner periphery of the base plate. It also includes a resilient spring element surrounded by a deformable jacket that extends beyond the upper and lower surfaces of the base plate to conform to surface irregularities in the flange surfaces upon compression of the gasket between the flange surfaces. Patent number: WO 02/097309 Inventors: V. Behil, J. Cox and J. Martini Publication date: 5 December 2002
High performance seal Applicant: NOK Corp, Japan A sealing device has been invented which has excellent pressure resistance, is usable at a working pressure of 0–2 MPa, and is not damaged even through the application of high pressure fuel (at 5 MPa or higher). The high-pressure fuel on the high pressure side is sealed by a first sealing part. Oil from a cam side, on a low pressure side is sealed by a second seal part. Fuel that managed to leak through the first sealing part is sealed by the second part, which forms a double seal structure. A resin ring, which comes into contact with a shaft is used in the first seal part, whereby abnormal wear does not occur even if fuel with poor lubrication is used, and the durability of the seal is increased. Patent number: WO 02/099320 Inventors: M. Okada, I. Taira, T. Abiko, Y. Kondo, K. Takeno and I. Yamane Publication date: 12 December 2002
Gas turbine sealing system Applicant: Chromalloy Gas Turbine Corp, USA Details of a gas turbine engine ‘abradeable’ seal system is provided. It comprises an assembly and a cooperating (and interacting) turbine blade. The turbine blade has a tip portion containing cubic boron nitride abrasive particles while the seal assembly has a super-alloy substrate onto which is bonded a coat that has a surface roughness of at least 300 RA. A porous ceramic ‘abradeable’ seal material on the bonded coat has a porosity of 5–15 volume %. Patent number: WO 02/099254 Inventors: P. Howard and R. Shankar Publication date: 12 December 2002
Mixer seal and bearing apparatus Applicant: SPX Corp, USA An assembly for supporting a mixer shaft in an opening in a vessel wall has a support mounted to the vessel wall around the opening, and a seal ring supported by this which engages the circumference of the mixer shaft, creating a seal. A first bearing is mounted to the support that surrounds and supports the mixer shaft at one axial location, while a second bearing is mounted to the support that surrounds and supports the mixer shaft at a second axial location. Patent number: WO 02/098546 Inventor: D.J. Engel Publication date: 12 December 2002
Filter element with sealing members Applicant: Donaldson Co Inc, USA A filter arrangement includes a media construction comprising a corrugated sheet secured to a flat sheet rolled into a coiled construction. A frame and a first seal member are provided. The frame secures the first seal member to the coiled construction. The first seal member is preferably oriented to form a radial seal with a housing. A second seal member is secured to the outer annular surface of the coiled construction. The second seal member includes a gasket extension having first and second opposite ends; an attachment portion; and a protrusion extending from the attachment portion. The second seal member is preferably oriented to form an axial seal with a housing. Air cleaners, preferably utilizing filter arrangements that are described in the patent, can be installed within housings. Methods of installing, filtering, assembling, and servicing are also described by the patent. Patent number: WO 02/098539 Inventors: J. Xu, J.D. Kuhn, E.J. Kreitinger, W.R.W. Bishop and S.S. Gieseke Publication date: 12 December 2002
Pigmented powder paint suspensions Applicant: BASF Coatings AG, Germany This invention relates to pigmented powder paint dispersions (pigmented powder slurries), which can be produced by mixing at least two liquid components, each of which contains at last one liquid starting product, in a static mixer, so that a liquid is obtained. The resulting liquid is then emulsified in an aqueous medium in a dispersing unit, so that an aqueous emulsion of liquid particles is obtained. The emulsion is then allowed to cool to create a suspension of dimensionally stable particles. The aqueous medium represents the suspension of at least one pigment. The invention also relates to a method for the production of such suspensions and to their use as coatings, adhesives and sealants or in the production of these. Patent number: WO 02/098993 Inventors: J. Berg, W.-A. Jung, M. Mauss, H.-J. Weintz, R. Polke, M. Stang, H. Heiko and R. Bayer Publication date: 12 December 2002
Sealing Technology February 2003