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Metal flat seal
PATENTS anchored to the frame or member such that it is adjustable within the guides, and secures the gasket within the inner gripping surface. The accompanying figure shows the apparatus (10) for inserting a fluid-sealing gasket between flange connectors of adjacent pipe sections. It includes a flat, curved gasket-holder frame (12) with a handle (14). The later includes a shaft (16), the proximal end of which is attached to the frame (12). The shaft extends radially outwards from the outer edge of the gasketholder frame. The apparatus may be made from any structurally suitable material, for example, aluminium (or aluminium alloys), steel, stainless steel, mild steel, polymeric composites, sheet metal and industrial laminates. In some embodiments the shape of the frame may be a curve, arc, semicircle, or any other shape appropriate to match the contour of the gasket that it contains. In order to enable the apparatus to be completely removed from within a flange assembly – once the gasket has been positioned – the frame (12) may have an open-ended shape, such as a ‘‘U’’ or semicircle, for example. In one embodiment, the circumference of the curved frame is approximately 55% of the circumference of a completely circular frame of the same radius. This design provides a large enough opening and surface area for a gasket to exit upon positioning within a flange assembly whilst still stabilising the gasket within the frame during transportation and placement. Patent number: WO/2013/109286 Publication date: 25 July 2013
which has excellent sealing performance, but also possesses low sliding characteristics. The oil seal described has an elastic member with a seal-lip part. The elastic member is formed from a composition containing a fluorine rubber and a fluorine resin. There is a convex part in the surface of the seal-lip component. This convex part is formed substantially from the fluorine resin contained in the composition. The fluorine resin is a copolymer containing polymer units based on tetrafluoroethylene and polymer units based on hexafluoropropylene. Patent number: WO/2013/111643 Inventors: T. Yanagiguchi, H. Masuda, Y. Nakano and T. Kitahara Publication date: 1 August 2013
Bearing with a built-in RFID system Applicant: NTN Corp, Japan This bearing design, which has a built-in radio frequency identification (RFID) unit, enables production time and costs to be reduced, whilst increasing compactness. The bearing’s RFID functionality enables monitoring data to be transmitted when the system is in a noncontact state. An inlet (14) that includes an integrated circuit chip (16) and an antenna (17), connected to this chip, and a magnetic seat (15), are stacked and embedded in a bearing seal (5) that seals the bearing space. Patent number: WO/2013/111638 Inventor: H. Ito Publication date: 1 August 2013
Metal substrate gasket with a filter Applicant: NOK Corp, Japan This patent details a metal substrate gasket with a filter. It is easy to machine/assemble and is capable of reducing the number of parts required as well as costs. Holes have been drilled into a portion of the flat surface of the metal substrate and a sealing section is located around the filter. A characteristics of this sealing section is that respective elastic rubber seals cover the two surfaces of the metal substrate in the thickness direction. A sealing bead section, formed in the metal substrate in the sealing section is another facet of this gasket’s design. Patent number: WO/2013/111394 Inventors: T. Anzai, S. Nakaoka, M. Ito and I. Tanji Publication date: 1 August 2013
Patent WO/2013/111638 details a bearing that has a built-in radio frequency identification unit for conveying monitoring data.
accommodates expansion and contraction of the rotors and stators because of a variation in dynamic and thermal operating conditions. For example, it is a known practice to pin a non-rotating component of the seal to the stator and provide the nonrotating seal component and stator with splines to enable the seal component to move radially with respect to the stator in response to changes in thermal and dynamic operating conditions. However, such pinned and spline connections take up a significant amount of space within the engine and may interfere with the optimal handling of working fluid flowing through the engine. This invention aims to provide arrangements for sealing a turbo-machine’s rotors to the stators in a way that will accommodate radial expansion and contraction of the rotor and stator in a compact manner – minimising the space taken up by the seal and the resulting interference by mounting hardware for the seal for optimal handling of working fluid flow through the machine. Patent number: WO/2013/115874 Inventors: I. Alvanos and G.L. Suciu Publication date: 8 August 2013
Metal flat seal Applicant: Elringklinger Ag, Germany This invention relates to a flat seal, which has a sealing plate that has at least two sealing layers arranged one on top of the other and in which at least one passage opening to be sealed is formed. The plate has at least one supporting device that increases the total material thickness (of the sealing plate) in some areas, and is formed by several folded-over sealing layer sections. According to this patent, in order to be able to simply and economically create a supporting device (having locally different effective heights), the flat seal is designed in such a way that the plate has at least one first sealing layer with an area that has a specific thickness and in which at least one folded-over sealing layer section (of the supporting device) is formed. The sealing plate design also involves a second sealing layer with an area that has a specific thickness and in which at least one second folded-over sealing layer section (of the supporting device) is formed. The thickness of the first layer is different to that of the second layer, such that the material thickness of the supporting device varies in some areas. Patent number: WO/2013/113835 Inventor: W. Kullen Publication date: 8 August 2013
Oil seal for automotive applications
Turbo-machinery seal
Gasket with a compression limiter
Applicant: Daikin Industries Ltd, Japan The purpose of this invention is to provide an oil seal for use in automotive applications,
Applicant: United Technologies, Corp, USA There are several known arrangements for sealing gas-turbine engine rotors to stators in a way that
Applicant: Federal-Mogul Corp, USA A multi-layer gasket is described It includes first and second functional layers, each of
14
Sealing Technology
November 2013
which has excellent sealing performance, but also possesses low sliding characteristics. The oil seal described has an elastic member with a seal-lip part. The elastic member is formed from a composition containing a fluorine rubber and a fluorine resin. There is a convex part in the surface of the seal-lip component. This convex part is formed substantially from the fluorine resin contained in the composition. The fluorine resin is a copolymer containing polymer units based on tetrafluoroethylene and polymer units based on hexafluoropropylene. Patent number: WO/2013/111643 Inventors: T. Yanagiguchi, H. Masuda, Y. Nakano and T. Kitahara Publication date: 1 August 2013
Bearing with a built-in RFID system Applicant: NTN Corp, Japan This bearing design, which has a built-in radio frequency identification (RFID) unit, enables production time and costs to be reduced, whilst increasing compactness. The bearing’s RFID functionality enables monitoring data to be transmitted when the system is in a noncontact state. An inlet (14) that includes an integrated circuit chip (16) and an antenna (17), connected to this chip, and a magnetic seat (15), are stacked and embedded in a bearing seal (5) that seals the bearing space. Patent number: WO/2013/111638 Inventor: H. Ito Publication date: 1 August 2013
Metal substrate gasket with a filter Applicant: NOK Corp, Japan This patent details a metal substrate gasket with a filter. It is easy to machine/assemble and is capable of reducing the number of parts required as well as costs. Holes have been drilled into a portion of the flat surface of the metal substrate and a sealing section is located around the filter. A characteristics of this sealing section is that respective elastic rubber seals cover the two surfaces of the metal substrate in the thickness direction. A sealing bead section, formed in the metal substrate in the sealing section is another facet of this gasket’s design. Patent number: WO/2013/111394 Inventors: T. Anzai, S. Nakaoka, M. Ito and I. Tanji Publication date: 1 August 2013
Patent WO/2013/111638 details a bearing that has a built-in radio frequency identification unit for conveying monitoring data.
accommodates expansion and contraction of the rotors and stators because of a variation in dynamic and thermal operating conditions. For example, it is a known practice to pin a non-rotating component of the seal to the stator and provide the nonrotating seal component and stator with splines to enable the seal component to move radially with respect to the stator in response to changes in thermal and dynamic operating conditions. However, such pinned and spline connections take up a significant amount of space within the engine and may interfere with the optimal handling of working fluid flowing through the engine. This invention aims to provide arrangements for sealing a turbo-machine’s rotors to the stators in a way that will accommodate radial expansion and contraction of the rotor and stator in a compact manner – minimising the space taken up by the seal and the resulting interference by mounting hardware for the seal for optimal handling of working fluid flow through the machine. Patent number: WO/2013/115874 Inventors: I. Alvanos and G.L. Suciu Publication date: 8 August 2013
Metal flat seal Applicant: Elringklinger Ag, Germany This invention relates to a flat seal, which has a sealing plate that has at least two sealing layers arranged one on top of the other and in which at least one passage opening to be sealed is formed. The plate has at least one supporting device that increases the total material thickness (of the sealing plate) in some areas, and is formed by several folded-over sealing layer sections. According to this patent, in order to be able to simply and economically create a supporting device (having locally different effective heights), the flat seal is designed in such a way that the plate has at least one first sealing layer with an area that has a specific thickness and in which at least one folded-over sealing layer section (of the supporting device) is formed. The sealing plate design also involves a second sealing layer with an area that has a specific thickness and in which at least one second folded-over sealing layer section (of the supporting device) is formed. The thickness of the first layer is different to that of the second layer, such that the material thickness of the supporting device varies in some areas. Patent number: WO/2013/113835 Inventor: W. Kullen Publication date: 8 August 2013
Oil seal for automotive applications
Turbo-machinery seal
Gasket with a compression limiter
Applicant: Daikin Industries Ltd, Japan The purpose of this invention is to provide an oil seal for use in automotive applications,
Applicant: United Technologies, Corp, USA There are several known arrangements for sealing gas-turbine engine rotors to stators in a way that
Applicant: Federal-Mogul Corp, USA A multi-layer gasket is described It includes first and second functional layers, each of
14
Sealing Technology
November 2013