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Piston ring
PATENTS Patent number: WO/2011/069520 Inventors: W.D. Coulter and R. Wittenberg Publication date: 16 June 2011
Joint seal Applicant: Robert Bosch GmbH, Germany This invention relates to an arrangement for sealing a joint area between a first joint partner and a second joint partner. According to the patent, at least one reservoir for an anti-corrosion agent is introduced into the sealing zone. The sealing element encloses the reservoir. The reservoir may be located in a cut-out in the metal counter-face, or designed to be part of the seal profile. Patent number: WO/2011/069827 Inventors: M. Ruckh and B. Hierlemann Publication date: 16 June 2011
This invention – detailed by patent WO/2011/069827 – relates to an arrangement for sealing off a joint area (1) between a first joint partner (20, 200) and a second joint partner (30, 300) using at least one elastic sealing element (18, 180).
End sealing assembly for a rotary kiln Applicant: Eesti Energia Õlitööstus As, Estonia This invention concerns an apparatus that is designed to be used in oil-shale processing applications. In particular, it relates to the end sealing assembly of a rotary kiln. The first and second casing rings (2, 3) used in the end sealing assembly are composed of at least four segments. On both sides of the rotating casing ring (1) a rectangular hollow (81, 91) for lubricants has been formed, while on the side that is assembled with the rotating casing ring of the first and second casing rings (2, 3), a hollow (82, 93) has also been formed for lubricants. 14
Sealing Technology
Lubricant channels (8, 9) are formed between the casing ring (1) of the end sealing assembly and the first and second casing rings (2, 3). Patent number: WO/2011/070162 Inventors: A. Kaidalov, B. Kindorkin and A. Tihhonov Publication date: 16 June 2011
At least one of the upper and lower surfaces of the ring is covered with a polyimide coating in which hard particles have been dispersed. Use is made of alumina, zirconia, silicon carbide, silicon nitride, cubic boron nitride, diamond, or the like. The hard particles have an average diameter of 0.01–5 μm, and the coating has a thickness of 2–30 μm. Patent number: WO/2011/071049 Inventors: H. Sasaki and T. Ono Publication date: 16 June 2011
Ring seal and retainer assembly
Patent WO/2011/070162 describes an apparatus that is designed to be used in oil-shale processing applications.
Wind turbine seal Applicant: Mitsubishi Heavy Industries Ltd, Japan This patent describes a split-seal arrangement for wind turbine applications. Both a felt ring and a lip seal are illustrated as options for the shaft seal. Patent number: WO/2011/070984 Inventors: H. Takeuchi, K. Hotta, K. Okada and H. Nishida Publication date: 16 June 2011
Applicant/Inventor: K.N. Vu, USA This invention relates to retainers for positioning seals between opposed mating surfaces. Examples quoted include metal C-seals and V-seals. According to the patent, prior art retainers suffer from significant disadvantages. For example, the coil retainer and sharp edges of the ring seal are prone to scratching, or otherwise harming, the opposed mating surfaces. This can impede the ring seal’s ability to provide a gas-tight or fluid-tight seal. Moreover, ring seals that have recessed sealing surfaces are expensive to manufacture and the parallelism requirement between the two recessed sealing surfaces presents a high risk of leakage. Therefore there is a need to develop an improved ring seal and retainer assembly that is inexpensive to manufacture and eliminates the risk of leakage. In addition, it is desirable to create a design that does not require recessed sealing surfaces, which are expensive to manufacture and difficult to polish. The retainer described is circular and includes a side-wall that is sized and positioned to cover (though not necessarily engage) the ring seal’s radial outer surface. The side-wall protects the ring seal’s radial outer surface from becoming damaged prior to being installed within the sealing assembly, and stops the opposed mating surfaces from being damaged by preventing the ringseal’s outer edge from scratching the opposed mating surfaces during assembly. The annular retainer includes a plurality of tabs which are sized and positioned to project inwardly from the retainer’s circular side-wall into the ring seal’s circumferential groove. Patent number: WO/2011/071521 Publication date: 16 June 2011
Piston ring Applicant: Kabushiki Kaisha Riken, Japan The subject of this patent is a piston ring that is capable – over a long period – of preventing aluminium adhesion in high-power engines.
Cylinder-head gasket Applicant: Caterpillar Inc, USA A cylinder-head gasket for industrial-size diesel engines – which use an individual gasket for each cylinder – has been developed. The
December 2011
Joint seal Applicant: Robert Bosch GmbH, Germany This invention relates to an arrangement for sealing a joint area between a first joint partner and a second joint partner. According to the patent, at least one reservoir for an anti-corrosion agent is introduced into the sealing zone. The sealing element encloses the reservoir. The reservoir may be located in a cut-out in the metal counter-face, or designed to be part of the seal profile. Patent number: WO/2011/069827 Inventors: M. Ruckh and B. Hierlemann Publication date: 16 June 2011
This invention – detailed by patent WO/2011/069827 – relates to an arrangement for sealing off a joint area (1) between a first joint partner (20, 200) and a second joint partner (30, 300) using at least one elastic sealing element (18, 180).
End sealing assembly for a rotary kiln Applicant: Eesti Energia Õlitööstus As, Estonia This invention concerns an apparatus that is designed to be used in oil-shale processing applications. In particular, it relates to the end sealing assembly of a rotary kiln. The first and second casing rings (2, 3) used in the end sealing assembly are composed of at least four segments. On both sides of the rotating casing ring (1) a rectangular hollow (81, 91) for lubricants has been formed, while on the side that is assembled with the rotating casing ring of the first and second casing rings (2, 3), a hollow (82, 93) has also been formed for lubricants. 14
Sealing Technology
Lubricant channels (8, 9) are formed between the casing ring (1) of the end sealing assembly and the first and second casing rings (2, 3). Patent number: WO/2011/070162 Inventors: A. Kaidalov, B. Kindorkin and A. Tihhonov Publication date: 16 June 2011
At least one of the upper and lower surfaces of the ring is covered with a polyimide coating in which hard particles have been dispersed. Use is made of alumina, zirconia, silicon carbide, silicon nitride, cubic boron nitride, diamond, or the like. The hard particles have an average diameter of 0.01–5 μm, and the coating has a thickness of 2–30 μm. Patent number: WO/2011/071049 Inventors: H. Sasaki and T. Ono Publication date: 16 June 2011
Ring seal and retainer assembly
Patent WO/2011/070162 describes an apparatus that is designed to be used in oil-shale processing applications.
Wind turbine seal Applicant: Mitsubishi Heavy Industries Ltd, Japan This patent describes a split-seal arrangement for wind turbine applications. Both a felt ring and a lip seal are illustrated as options for the shaft seal. Patent number: WO/2011/070984 Inventors: H. Takeuchi, K. Hotta, K. Okada and H. Nishida Publication date: 16 June 2011
Applicant/Inventor: K.N. Vu, USA This invention relates to retainers for positioning seals between opposed mating surfaces. Examples quoted include metal C-seals and V-seals. According to the patent, prior art retainers suffer from significant disadvantages. For example, the coil retainer and sharp edges of the ring seal are prone to scratching, or otherwise harming, the opposed mating surfaces. This can impede the ring seal’s ability to provide a gas-tight or fluid-tight seal. Moreover, ring seals that have recessed sealing surfaces are expensive to manufacture and the parallelism requirement between the two recessed sealing surfaces presents a high risk of leakage. Therefore there is a need to develop an improved ring seal and retainer assembly that is inexpensive to manufacture and eliminates the risk of leakage. In addition, it is desirable to create a design that does not require recessed sealing surfaces, which are expensive to manufacture and difficult to polish. The retainer described is circular and includes a side-wall that is sized and positioned to cover (though not necessarily engage) the ring seal’s radial outer surface. The side-wall protects the ring seal’s radial outer surface from becoming damaged prior to being installed within the sealing assembly, and stops the opposed mating surfaces from being damaged by preventing the ringseal’s outer edge from scratching the opposed mating surfaces during assembly. The annular retainer includes a plurality of tabs which are sized and positioned to project inwardly from the retainer’s circular side-wall into the ring seal’s circumferential groove. Patent number: WO/2011/071521 Publication date: 16 June 2011
Piston ring Applicant: Kabushiki Kaisha Riken, Japan The subject of this patent is a piston ring that is capable – over a long period – of preventing aluminium adhesion in high-power engines.
Cylinder-head gasket Applicant: Caterpillar Inc, USA A cylinder-head gasket for industrial-size diesel engines – which use an individual gasket for each cylinder – has been developed. The
December 2011