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Sealing material for solar-cell modules
PATENTS
PATENTS Sealing system for cable entries Applicant: Roxtec Ab, Sweden The objective of this invention is to provide an improved sealing system for cable entries or pipe penetration points. It uses a frame for receiving one or more compressible modules. A compressible module contains openings with ‘‘peelable’’ layers to enable it to adapt to the diameter of the cable or pipe. The flange and groove combination makes it possible to retain the compressible modules in the frame without using stay plates between each row of modules. Consequently the tolerance may be improved while precision during manufacturing is maintained. Patent number: WO/2010/089291 Inventors: J. Andersson, M. Ericson, J. Filipsen, U. Hildingsson, C. Lundborg, S. Milton, R. Pettersson and J. Åkesson Publication date: 1 December 2011
Sealed box Applicant: Y. Liu, China Details of a sealed box, or what is effectively a sealed, strong box or safe, are disclosed. The design and arrangement of the seals around the door are described. Patent number: WO/2011/147275 Inventors: Y. Liu and W. Huang Publication date: 1 December 2011
Sealing structure for a turbine Applicant: Mitsubishi Heavy Industries Ltd, Japan This patent covers a sealing structure for a turbine. It is designed to curtail disturbances to a main fluid stream, caused by bypass leakage. The sealing structure includes shroud members, provided at the tips of a plurality of blades. The design of the shroud is covered in considerable detail. Patent number: WO/2011/148899 Inventors: Y. Kuwamura, K. Matsumoto, H. Oyama, Y. Tanaka and A. Matsuo Publication date: 1 December 2011
Bellows seal assembly Applicant: Caterpillar Inc, USA The bellows seal described by this patent has been developed to improve the reliability of such seal designs, which are used to protect spherical joints on earth-moving equipment. The seal body generally defines an ‘‘S-shaped’’ cross-section. The purpose is to reduce the strain that occurs in previous designs, which were subject to ‘‘radial swaging’’, and also reduce manufacturing costs. Patent number: WO/2011/150150 Inventors: D.J. Becker and R.P. Wietharn Publication date: 1 December 2011
Sealing system for a
Applicant: Eastman Kodak Co, USA This patent provides details of a seal for an outlet port of an ink tank in an ink-jet printer. Patent number: WO/2011/149809 Inventor: K.J. O’Leary Publication date: 1 December 2011
Applicant: Nitto Denko Corp, Japan A method is described for sealing the gap between a wall and a duct, or a similar structure that is being passed through the wall. It involves using an elastic layer; an adhesive layer that is laminated on the surface of the elastic layer; and a separate sheet that is laminated on the surface of the adhesive layer. The method of assembly is also described. Patent number: WO/2011/148911 Inventors: T. Kousaka, T.Tamura and J. Asano Publication date: 1 December 2011 14
Sealing Technology
Patent WO/2011/147900 details a tapered seal design for use in refrigerators. It is shown here assembled in a groove.
Piston head with sealing arrangement
Seal for a printer’s ink tank
Sealing member
a tapered shape. This design makes it easy to align the sealing element and insert it into the groove, and simplifies assembly of the sealing element. If the groove is formed by injection-moulding, a shape with an opening at the top that is larger in cross-sectional area than at the bottom also facilitates mould release. An outer surface of the side-sealing portion and the inclined surface are oriented at approximately the same inclined angle not less than 4º. The angle may be 5º to 6º. The sealing element also may have a groove that is designed to accept the edge of the mating component. Patent number: WO/2011/147900 Inventors: J. Ma, Y. Ding, Y. Huang, F. Tao, Z. Yang and D. Zhao Publication date: 1 December 2011
The ‘‘S-shaped’’ cross-sectional bellows seal covered by patent WO/2011/150150 is designed to protect swivel joints on earth-moving equipment.
household appliance Applicant: BSH Bosch und Siemens Hausgeräte GmbH, Germany This invention relates to a sealing system and a household appliance in which it is used. In particular, this patent refers to a refrigeration appliance that has a storage chamber that can be evacuated (that is, a ‘‘low-pressure chamber’’ or ‘‘vacuum chamber’’). The groove and the sealing element described each have
Applicant: GE Healthcare Bio-Sciences Ab, Sweden A sanitary piston head with a body that includes a resilient sealing skirt forms the subject of this patent. The skirt is biased in the sealing direction by a radially biasing element. Patent number: WO/2011/149414 Inventors: B.A. Johansson and P. Åkerström Publication date: 1 December 2011
Sealing material for solar-cell modules Applicant: Dai Nippon Printing Co Ltd, Japan Disclosed are details of a sealing material for solar-cell modules and a method of manufacturing it. The process used ensures that the material has good transparency properties and is heat resistant, while using a polyethylene resin. The resin has a density of 0.900 g/cm3 or less and an MFR of 0.1–1.0 g/10 min. The sealing material is obtained by melt-moulding a
June 2012
PATENTS composition containing the polyethylene resin and a polymerisation initiator contained at 0.02 mass% or more (but less than 0.5 mass%) of the composition. The difference in the density of the resin composition before and after melt-moulding is about 0.05 g/cm3, while the difference in the MFR of the resin composition – again, before and after the melt-moulding – is 1.0 g/10min or greater. Patent number: WO/2011/152314 Inventors: K. Murasawa and S. Osone Publication date: 8 December 2011
Stern-tube lip seal Applicant: Wartsila Japan Ltd, Japan Details of a seal ring are provided. According to this patent, the contact stress of the seal lip section is set so as to be maintained in an appropriate state where problems such as leakage or early abnormal wear do not occur, and that durability is improved while maintaining ‘‘sealability’’. Furthermore, the ability to install the seal’s outer peripheral section, which fits into an annular groove of the casing, is improved, and the contact surface of the seal lip section is stabilised. A characteristic of the seal ring is that the top, key section (29) is formed into a chevron shape, with the centre (T) as the vertex. Furthermore, the portion between the key section and the heel section (31) comprises
A revised stern-tube lip seal design described by patent WO/2011/155049.
June 2012
step sections (37a & 37b) to reduce the axial thickness. The inside diameter of the step section (37b), which is on the back-side, is formed so that it is larger than the inside diameter of the step section (37a), which is located on the front-side. Moreover, the tip (39) of the lip section (35) protrudes into the chevron shape; and that the centre (P) of the spring groove (43) – into which is fitted an annular spring that presses the lip tip (39) against a liner (15) – is provided in such a way as to be offset from the lip tip towards the lip back-side within a range equal to 10% of the propeller-shaft length of the lip back-surface width. Patent number: WO/2011/155049 Inventors: H. Yoshida, M. Inaba and M. Takayasu Publication date: 15 December 2011 Technical Editor’s comment: One illustration also includes a helical pattern on the shaft, but this is not covered in the English abstract.
Sealing device for an anti-friction bearing Applicant: NTN Corp, Japan The sealing device (6) detailed by this patent is designed for an anti-friction bearing. It serves to seal a bearing space provided with inner races (1), outer races (2) and a plurality of rolling bodies (4) that are interposed between the inner races and the outer races. The bearing space is located between the inner and outer races. The sealing device comprises annular sealing cases (11) that are fixed to the ends of the outer races (2), and annular seal bodies (12), the base ends of which are fixed to the inner peripheral surfaces of the sealing cases, and the tips of which are in contact with the inner races (1). Holes (15), which create a link between the interior of the bearing and the exterior, are provided in the sealing cases (11). Filters (16) which are permeable to gas and which block the passage of moisture and oil are located in these communication holes. The device is specifically designed for multi-row bearings. Tapered roller bearings are illustrated in the patent. Patent number: WO/2011/155395 Inventors: T. Toyoda and Y. Ishizaki Publication date: 15 December 2011
A seal for a multiple-row bearing assembly, which is designed to enable ‘‘breathing’’ without the transfer of grease or moisture, forms the subject of patent WO/2011/155395.
Gasket for a pressure vessel Applicant: Furuya Metal Co Ltd, Japan A gasket for a pressure vessel has been developed. The gasket is suitable for use as a consumable part. According to this patent, it exerts sufficient strength, and possesses good sealing properties and corrosion resistance even under high temperatures and high-pressure conditions, and does not cause mutual diffusion at the flange. A design for a high-pressure vessel is illustrated with a clamp-type seal located between the lid and vessel. Several tapered flange designs are also illustrated, including a flange with a surface formed from iridium or an iridium-based alloy. A characteristic feature of the gasket is that a nickel-based alloy is used as the substrate. A nitride layer, formed from nitride or a nickel-based alloy, is formed on the surface of this substrate, and a coating layer, containing the oxide of a platinum-group metal, is formed on the surface of the nitride layer. Patent number: WO/2011/152332 Inventors: T. Shimamune, S. Akatsuka and K. Matsushita Publication date: 8 December 2011
Sealing Technology
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PATENTS Sealing system for cable entries Applicant: Roxtec Ab, Sweden The objective of this invention is to provide an improved sealing system for cable entries or pipe penetration points. It uses a frame for receiving one or more compressible modules. A compressible module contains openings with ‘‘peelable’’ layers to enable it to adapt to the diameter of the cable or pipe. The flange and groove combination makes it possible to retain the compressible modules in the frame without using stay plates between each row of modules. Consequently the tolerance may be improved while precision during manufacturing is maintained. Patent number: WO/2010/089291 Inventors: J. Andersson, M. Ericson, J. Filipsen, U. Hildingsson, C. Lundborg, S. Milton, R. Pettersson and J. Åkesson Publication date: 1 December 2011
Sealed box Applicant: Y. Liu, China Details of a sealed box, or what is effectively a sealed, strong box or safe, are disclosed. The design and arrangement of the seals around the door are described. Patent number: WO/2011/147275 Inventors: Y. Liu and W. Huang Publication date: 1 December 2011
Sealing structure for a turbine Applicant: Mitsubishi Heavy Industries Ltd, Japan This patent covers a sealing structure for a turbine. It is designed to curtail disturbances to a main fluid stream, caused by bypass leakage. The sealing structure includes shroud members, provided at the tips of a plurality of blades. The design of the shroud is covered in considerable detail. Patent number: WO/2011/148899 Inventors: Y. Kuwamura, K. Matsumoto, H. Oyama, Y. Tanaka and A. Matsuo Publication date: 1 December 2011
Bellows seal assembly Applicant: Caterpillar Inc, USA The bellows seal described by this patent has been developed to improve the reliability of such seal designs, which are used to protect spherical joints on earth-moving equipment. The seal body generally defines an ‘‘S-shaped’’ cross-section. The purpose is to reduce the strain that occurs in previous designs, which were subject to ‘‘radial swaging’’, and also reduce manufacturing costs. Patent number: WO/2011/150150 Inventors: D.J. Becker and R.P. Wietharn Publication date: 1 December 2011
Sealing system for a
Applicant: Eastman Kodak Co, USA This patent provides details of a seal for an outlet port of an ink tank in an ink-jet printer. Patent number: WO/2011/149809 Inventor: K.J. O’Leary Publication date: 1 December 2011
Applicant: Nitto Denko Corp, Japan A method is described for sealing the gap between a wall and a duct, or a similar structure that is being passed through the wall. It involves using an elastic layer; an adhesive layer that is laminated on the surface of the elastic layer; and a separate sheet that is laminated on the surface of the adhesive layer. The method of assembly is also described. Patent number: WO/2011/148911 Inventors: T. Kousaka, T.Tamura and J. Asano Publication date: 1 December 2011 14
Sealing Technology
Patent WO/2011/147900 details a tapered seal design for use in refrigerators. It is shown here assembled in a groove.
Piston head with sealing arrangement
Seal for a printer’s ink tank
Sealing member
a tapered shape. This design makes it easy to align the sealing element and insert it into the groove, and simplifies assembly of the sealing element. If the groove is formed by injection-moulding, a shape with an opening at the top that is larger in cross-sectional area than at the bottom also facilitates mould release. An outer surface of the side-sealing portion and the inclined surface are oriented at approximately the same inclined angle not less than 4º. The angle may be 5º to 6º. The sealing element also may have a groove that is designed to accept the edge of the mating component. Patent number: WO/2011/147900 Inventors: J. Ma, Y. Ding, Y. Huang, F. Tao, Z. Yang and D. Zhao Publication date: 1 December 2011
The ‘‘S-shaped’’ cross-sectional bellows seal covered by patent WO/2011/150150 is designed to protect swivel joints on earth-moving equipment.
household appliance Applicant: BSH Bosch und Siemens Hausgeräte GmbH, Germany This invention relates to a sealing system and a household appliance in which it is used. In particular, this patent refers to a refrigeration appliance that has a storage chamber that can be evacuated (that is, a ‘‘low-pressure chamber’’ or ‘‘vacuum chamber’’). The groove and the sealing element described each have
Applicant: GE Healthcare Bio-Sciences Ab, Sweden A sanitary piston head with a body that includes a resilient sealing skirt forms the subject of this patent. The skirt is biased in the sealing direction by a radially biasing element. Patent number: WO/2011/149414 Inventors: B.A. Johansson and P. Åkerström Publication date: 1 December 2011
Sealing material for solar-cell modules Applicant: Dai Nippon Printing Co Ltd, Japan Disclosed are details of a sealing material for solar-cell modules and a method of manufacturing it. The process used ensures that the material has good transparency properties and is heat resistant, while using a polyethylene resin. The resin has a density of 0.900 g/cm3 or less and an MFR of 0.1–1.0 g/10 min. The sealing material is obtained by melt-moulding a
June 2012
PATENTS composition containing the polyethylene resin and a polymerisation initiator contained at 0.02 mass% or more (but less than 0.5 mass%) of the composition. The difference in the density of the resin composition before and after melt-moulding is about 0.05 g/cm3, while the difference in the MFR of the resin composition – again, before and after the melt-moulding – is 1.0 g/10min or greater. Patent number: WO/2011/152314 Inventors: K. Murasawa and S. Osone Publication date: 8 December 2011
Stern-tube lip seal Applicant: Wartsila Japan Ltd, Japan Details of a seal ring are provided. According to this patent, the contact stress of the seal lip section is set so as to be maintained in an appropriate state where problems such as leakage or early abnormal wear do not occur, and that durability is improved while maintaining ‘‘sealability’’. Furthermore, the ability to install the seal’s outer peripheral section, which fits into an annular groove of the casing, is improved, and the contact surface of the seal lip section is stabilised. A characteristic of the seal ring is that the top, key section (29) is formed into a chevron shape, with the centre (T) as the vertex. Furthermore, the portion between the key section and the heel section (31) comprises
A revised stern-tube lip seal design described by patent WO/2011/155049.
June 2012
step sections (37a & 37b) to reduce the axial thickness. The inside diameter of the step section (37b), which is on the back-side, is formed so that it is larger than the inside diameter of the step section (37a), which is located on the front-side. Moreover, the tip (39) of the lip section (35) protrudes into the chevron shape; and that the centre (P) of the spring groove (43) – into which is fitted an annular spring that presses the lip tip (39) against a liner (15) – is provided in such a way as to be offset from the lip tip towards the lip back-side within a range equal to 10% of the propeller-shaft length of the lip back-surface width. Patent number: WO/2011/155049 Inventors: H. Yoshida, M. Inaba and M. Takayasu Publication date: 15 December 2011 Technical Editor’s comment: One illustration also includes a helical pattern on the shaft, but this is not covered in the English abstract.
Sealing device for an anti-friction bearing Applicant: NTN Corp, Japan The sealing device (6) detailed by this patent is designed for an anti-friction bearing. It serves to seal a bearing space provided with inner races (1), outer races (2) and a plurality of rolling bodies (4) that are interposed between the inner races and the outer races. The bearing space is located between the inner and outer races. The sealing device comprises annular sealing cases (11) that are fixed to the ends of the outer races (2), and annular seal bodies (12), the base ends of which are fixed to the inner peripheral surfaces of the sealing cases, and the tips of which are in contact with the inner races (1). Holes (15), which create a link between the interior of the bearing and the exterior, are provided in the sealing cases (11). Filters (16) which are permeable to gas and which block the passage of moisture and oil are located in these communication holes. The device is specifically designed for multi-row bearings. Tapered roller bearings are illustrated in the patent. Patent number: WO/2011/155395 Inventors: T. Toyoda and Y. Ishizaki Publication date: 15 December 2011
A seal for a multiple-row bearing assembly, which is designed to enable ‘‘breathing’’ without the transfer of grease or moisture, forms the subject of patent WO/2011/155395.
Gasket for a pressure vessel Applicant: Furuya Metal Co Ltd, Japan A gasket for a pressure vessel has been developed. The gasket is suitable for use as a consumable part. According to this patent, it exerts sufficient strength, and possesses good sealing properties and corrosion resistance even under high temperatures and high-pressure conditions, and does not cause mutual diffusion at the flange. A design for a high-pressure vessel is illustrated with a clamp-type seal located between the lid and vessel. Several tapered flange designs are also illustrated, including a flange with a surface formed from iridium or an iridium-based alloy. A characteristic feature of the gasket is that a nickel-based alloy is used as the substrate. A nitride layer, formed from nitride or a nickel-based alloy, is formed on the surface of this substrate, and a coating layer, containing the oxide of a platinum-group metal, is formed on the surface of the nitride layer. Patent number: WO/2011/152332 Inventors: T. Shimamune, S. Akatsuka and K. Matsushita Publication date: 8 December 2011
Sealing Technology
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