Material for a gasket
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PATENTS November 2013 Sealing Technology 13 formation. In particular, it discusses a “dual” drill pipe in which two separate fluid conduits are provided within a single pipe extending from a drilling unit into the well-bore, and the seals for maintaining fluid-tight connections between inner fluid conduits within such a drill pipe of this type. Patent number: WO/2013/104769 Inventor: A. Espen Publication date: 18 July 2013 Bearing seal with integrated sensor Applicant: Aktiebolaget SKF, Sweden This patent provides details of a bearing seal with an integrated sensor for monitoring seal and/or bearing conditions. The seal is at least partly made of an injection-moulded elastomer material. The integrated sensor comprises an optical fibre with at least one light distorting structure that is susceptible to external influ- ences. This fibre is integrated in the elastomer material during the injection-moulding process. Patent number: WO/2013/104426 Inventor: H. Yang Publication date: 18 July 2013 Seal for a disk valve Applicant: Carl Freudenberg Kg, Germany This invention relates to a seal on a disk valve, in which a sealing collar – consisting of an elastomeric material – is used for both the static flange seal and the dynamic seal on the valve disk and on the switching pin. The action of the static flange seal is separate from that of the dynamic disk seal. Patent number: WO/2013/104380 Inventors: F. Lauer and T. Kramer Publication date: 18 July 2013 Seal swell additive Applicant: Croda Inc, USA Non-polar base oils of the type used in pre- mium engine and drive-line oils are known to cause seal shrinkage and weight loss. Additives that are combined with lubricating oils can contribute to this effect and cause even more damage to the seals. This shrinkage and weight loss experienced by the seals leads to a reduc- tion in seal performance. It is a common practice to use additives in the oils to try to counteract this effect. Traditionally, diesters of ortho-phthalic acid and alcohols have been used as seal swell agents in lubricating oils for this purpose. The additives are often used at “treat rates” of less than 1%. However, recent environmental and toxicological studies have shown that exposure to phthalates can have adverse effects on human and animal health. Therefore, there exists a need to provide a seal swell agent that is effective in maintaining seal performance and is safe for the environ- ment and not damaging to human and animal health. It is the objective of this patent to address at least one of the above disadvantages and/or other disadvantages associated with the prior art. According to one aspect of this inven- tion, a seal swell agent, comprising a diester of sorbitol (or a derivative) and at least one car- boxylic acid is provided for a lubricating fluid. The invention further provides for the use of a diester of sorbitol (or a derivative) and at least one carboxylic acid as a seal swell agent in a lubricating fluid. Patent number: WO/2013/109568 Inventors: X. Chen, C. Donaghy and A.N. Kurchan Publication date: 18 July 2013 Doctor-blade chamber seal Applicant: Tresu A/S, Denmark This invention concerns a printing unit with a doctor-blade chamber and a rotatable roller that extends partially into the doctor blade chamber for receiving ink during operation. A gasket is used to seal between the doctor-blade chamber and the roller. The gasket has at least one seal- ing surface with a width that corresponds to that of the doctor-blade chamber and a thick- ness in the longitudinal direction of the roller. The thickness is delimited by a first edge and a second edge at the sealing surface, wherein the gasket, at its other side, includes an elastomeric edge for sealing abutment against the roller. The elastomeric edge is offset in the longitudi- nal direction of the roller/doctor blade chamber relative to at least one of the edges that delimit the thickness on the sealing surface. Patent number: WO/2013/104366 Inventor: C. Fogh-Hansen Publication date: 18 July 2013 Material for a gasket Applicant: Nichias Corp, Japan This patent provides details of a material for a gasket, which is characterised by the follow- ing: a chromate film or non-chromate film; a phenol resin primer layer, and a polyol-cross- linkable fluoro-rubber layer that are formed (in this order) on one or both surfaces of a steel plate – outwards from the plate. The polyol- cross-linkable fluoro-rubber layer is obtained by applying a composition containing a fluororub- ber, a polyol cross-linking agent, an amine-based cross-linking accelerator and silica to the phenol resin primer layer, and then heating it. The amine-based cross-linking accelerator is a tertiary amine or a tertiary amine salt obtained through the reaction between a tertiary amine and an acid. According to this patent, the material can be used for a gasket that is installed in a vehicle engine. It says that the rubber will not peel off in areas that come into contact with water or antifreeze liquid, even if the gasket is in contact with other types of metal or an abrasive surface. Furthermore, layer peeling is not likely to occur at seal sites around the combustion chambers. Patent number: WO/2013/108779 Inventors: T. Arisawa, H. Aoyagi and K. Ishikawa Publication date: 25 July 2013 Apparatus for inserting gaskets Applicant/Inventor: K.D. Field, USA An apparatus for inserting a gasket between the adjoining faces of a flange assembly has been developed and forms the subject of this patent. It includes a frame, a member and a wire. The frame has a first end, a second end and an inner gripping surface. The first and second ends pos- sess guides. The member has a first end-portion attached to the frame and a second portion extending away from the frame. The wire is An isometric view of a gasket-insertion apparatus, according to an embodiment of patent WO/2013/109286.
Transcript of Material for a gasket
PATENTS
November 2013 Sealing Technology13
formation. In particular, it discusses a “dual” drill pipe in which two separate fluid conduits are provided within a single pipe extending from a drilling unit into the well-bore, and the seals for maintaining fluid-tight connections between inner fluid conduits within such a drill pipe of this type.Patent number: WO/2013/104769Inventor: A. EspenPublication date: 18 July 2013
Bearing seal with integrated sensor
Applicant: Aktiebolaget SKF, SwedenThis patent provides details of a bearing seal with an integrated sensor for monitoring seal and/or bearing conditions. The seal is at least partly made of an injection-moulded elastomer material. The integrated sensor comprises an optical fibre with at least one light distorting structure that is susceptible to external influ-ences. This fibre is integrated in the elastomer material during the injection-moulding process.Patent number: WO/2013/104426Inventor: H. YangPublication date: 18 July 2013
Seal for a disk valve
Applicant: Carl Freudenberg Kg, GermanyThis invention relates to a seal on a disk valve, in which a sealing collar – consisting of an elastomeric material – is used for both the static flange seal and the dynamic seal on the valve disk and on the switching pin. The action of the static flange seal is separate from that of the dynamic disk seal.Patent number: WO/2013/104380Inventors: F. Lauer and T. KramerPublication date: 18 July 2013
Seal swell additive
Applicant: Croda Inc, USANon-polar base oils of the type used in pre-mium engine and drive-line oils are known to cause seal shrinkage and weight loss. Additives that are combined with lubricating oils can contribute to this effect and cause even more damage to the seals. This shrinkage and weight loss experienced by the seals leads to a reduc-tion in seal performance. It is a common practice to use additives in the oils to try to counteract this effect. Traditionally, diesters of ortho-phthalic acid and alcohols have been used as seal swell agents in lubricating oils for this purpose. The additives are often used at “treat rates” of less than 1%. However, recent environmental and toxicological studies have
shown that exposure to phthalates can have adverse effects on human and animal health. Therefore, there exists a need to provide a seal swell agent that is effective in maintaining seal performance and is safe for the environ-ment and not damaging to human and animal health. It is the objective of this patent to address at least one of the above disadvantages and/or other disadvantages associated with the prior art. According to one aspect of this inven-tion, a seal swell agent, comprising a diester of sorbitol (or a derivative) and at least one car-boxylic acid is provided for a lubricating fluid. The invention further provides for the use of a diester of sorbitol (or a derivative) and at least one carboxylic acid as a seal swell agent in a lubricating fluid.Patent number: WO/2013/109568Inventors: X. Chen, C. Donaghy and A.N. KurchanPublication date: 18 July 2013
Doctor-blade chamber seal
Applicant: Tresu A/S, DenmarkThis invention concerns a printing unit with a doctor-blade chamber and a rotatable roller that extends partially into the doctor blade chamber for receiving ink during operation. A gasket is used to seal between the doctor-blade chamber and the roller. The gasket has at least one seal-ing surface with a width that corresponds to that of the doctor-blade chamber and a thick-ness in the longitudinal direction of the roller. The thickness is delimited by a first edge and a second edge at the sealing surface, wherein the gasket, at its other side, includes an elastomeric edge for sealing abutment against the roller. The elastomeric edge is offset in the longitudi-nal direction of the roller/doctor blade chamber relative to at least one of the edges that delimit the thickness on the sealing surface.Patent number: WO/2013/104366Inventor: C. Fogh-HansenPublication date: 18 July 2013
Material for a gasket
Applicant: Nichias Corp, JapanThis patent provides details of a material for a gasket, which is characterised by the follow-ing: a chromate film or non-chromate film; a phenol resin primer layer, and a polyol-cross-linkable fluoro-rubber layer that are formed (in this order) on one or both surfaces of a steel plate – outwards from the plate. The polyol-cross-linkable fluoro-rubber layer is obtained by applying a composition containing a fluororub-ber, a polyol cross-linking agent, an amine-based cross-linking accelerator and silica to the phenol resin primer layer, and then heating it. The
amine-based cross-linking accelerator is a tertiary amine or a tertiary amine salt obtained through the reaction between a tertiary amine and an acid. According to this patent, the material can be used for a gasket that is installed in a vehicle engine. It says that the rubber will not peel off in areas that come into contact with water or antifreeze liquid, even if the gasket is in contact with other types of metal or an abrasive surface. Furthermore, layer peeling is not likely to occur at seal sites around the combustion chambers.Patent number: WO/2013/108779Inventors: T. Arisawa, H. Aoyagi and K. IshikawaPublication date: 25 July 2013
Apparatus for inserting gaskets
Applicant/Inventor: K.D. Field, USAAn apparatus for inserting a gasket between the adjoining faces of a flange assembly has been developed and forms the subject of this patent. It includes a frame, a member and a wire. The frame has a first end, a second end and an inner gripping surface. The first and second ends pos-sess guides. The member has a first end-portion attached to the frame and a second portion extending away from the frame. The wire is
An isometric view of a gasket-insertion apparatus, according to an embodiment of patent WO/2013/109286.
