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Multi-layered piston ring arrangement
PATENTS
Seal mechanism for fluid machine Applicant: Ebara Corporation, Japan This patent describes a seal for preventing internal leakage within a pump, such as at the mouth of the impeller, and also as a shaft seal. It is specifically designed to reduce the noise of the machine. The seal (10) has an annular seal component (12) that is movable in a radial direction and housing
Lip seal for a cooking appliance
(11) between the casing (23) and shaft (22). The annular seal has a surface (12a) that has one or more passages (15) formed in the surface (12a) and/or the stationary surface (11c). A variety of passage geometries are described. Patent number: WO 2005/061932 Inventors: S. Ito and J. Kawabata Publication date: 7 July 2005
Applicant: SEB SA, France This invention relates to a lip seal (1) for the lid of a pressure cooker. The patented feature is a geometrical discontinuity (80). The purpose of this discontinuity is to provide a channel connecting the volume enclosed behind the lips with the outside. This will provide
continued energization of the seal when the lips are crushed together. The patent shows four of these slots at 90º to each other around the circumference of the seal. Patent number: WO 2005/063087 Inventors: C.M-A. Seurat Guiochet, M.P. Cartigny and D.J-M. Anota Publication date: 14 July 2005
Cross-section of the pump seal designed to reduce noise, described in WO 2005/061932.
The pressure cooker seal assembly described in WO 2005/063087, and a detail of the slot to provide connection to the outside if the lips are crushed together.
Filter element incorporating a seal Applicant: Donaldson Company, USA This patent is intended particularly for air filters with replaceable filter elements. The filter element includes a filter media pack (2) a pre-form (35) and an over-mold (48, 51, 54) sealing a portion of the interface between the pre-form and the media pack, and also forming an air cleaner seal for the filter element. The over-mold
Multi-layered piston ring arrangement
preferably comprises molded, foamed polyurethane. The filter element is positioned in a mold together with the pre-form, and uncured foaming urethane is allowed to rise and cure to cover the interface between the filter media pack and the pre-form. Patent number: WO 2005/063361 Inventors: K.J. Schrage, T. Murphy and D.R. Mork Publication date: 14 July 2005
A filter element with a foamed polyurethane seal, manufactured as described in WO 2005/063361.
Sealing Technology September 2005
Applicant: E.I. Dupont de Nemours & Co, USA This patent describes a multilayer piston ring assembly designed to ensure that the gaps or fractures in the rings remain well spaced from each other. The layers of the piston ring are connected by vertical pins to prevent them from rotating relative to each other in service. This patent is also specifically for piston rings manufactured from high duty plastics. Those specified in the
patent include polyimide, polyamide, polyester, polyether ether ketone (PEEK), polyamide imide (PAI), polyether imide, polyether ketone ketone (PEKK), polyether ketone (PEK), polyphenylene sulfide, polybenzimidazole, and thermoplastic polyimide (TPI), polytetrafluoroethylene (PTFE), and liquid crystal polymer (LCP). Patent number: WO 2005/064212 Inventor: M.S. Edwards Publication date: 14 July 2005
The layers of a plastic piston ring which are connected by a pin to prevent relative rotation, from WO 2005/064212.
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Seal mechanism for fluid machine Applicant: Ebara Corporation, Japan This patent describes a seal for preventing internal leakage within a pump, such as at the mouth of the impeller, and also as a shaft seal. It is specifically designed to reduce the noise of the machine. The seal (10) has an annular seal component (12) that is movable in a radial direction and housing
Lip seal for a cooking appliance
(11) between the casing (23) and shaft (22). The annular seal has a surface (12a) that has one or more passages (15) formed in the surface (12a) and/or the stationary surface (11c). A variety of passage geometries are described. Patent number: WO 2005/061932 Inventors: S. Ito and J. Kawabata Publication date: 7 July 2005
Applicant: SEB SA, France This invention relates to a lip seal (1) for the lid of a pressure cooker. The patented feature is a geometrical discontinuity (80). The purpose of this discontinuity is to provide a channel connecting the volume enclosed behind the lips with the outside. This will provide
continued energization of the seal when the lips are crushed together. The patent shows four of these slots at 90º to each other around the circumference of the seal. Patent number: WO 2005/063087 Inventors: C.M-A. Seurat Guiochet, M.P. Cartigny and D.J-M. Anota Publication date: 14 July 2005
Cross-section of the pump seal designed to reduce noise, described in WO 2005/061932.
The pressure cooker seal assembly described in WO 2005/063087, and a detail of the slot to provide connection to the outside if the lips are crushed together.
Filter element incorporating a seal Applicant: Donaldson Company, USA This patent is intended particularly for air filters with replaceable filter elements. The filter element includes a filter media pack (2) a pre-form (35) and an over-mold (48, 51, 54) sealing a portion of the interface between the pre-form and the media pack, and also forming an air cleaner seal for the filter element. The over-mold
Multi-layered piston ring arrangement
preferably comprises molded, foamed polyurethane. The filter element is positioned in a mold together with the pre-form, and uncured foaming urethane is allowed to rise and cure to cover the interface between the filter media pack and the pre-form. Patent number: WO 2005/063361 Inventors: K.J. Schrage, T. Murphy and D.R. Mork Publication date: 14 July 2005
A filter element with a foamed polyurethane seal, manufactured as described in WO 2005/063361.
Sealing Technology September 2005
Applicant: E.I. Dupont de Nemours & Co, USA This patent describes a multilayer piston ring assembly designed to ensure that the gaps or fractures in the rings remain well spaced from each other. The layers of the piston ring are connected by vertical pins to prevent them from rotating relative to each other in service. This patent is also specifically for piston rings manufactured from high duty plastics. Those specified in the
patent include polyimide, polyamide, polyester, polyether ether ketone (PEEK), polyamide imide (PAI), polyether imide, polyether ketone ketone (PEKK), polyether ketone (PEK), polyphenylene sulfide, polybenzimidazole, and thermoplastic polyimide (TPI), polytetrafluoroethylene (PTFE), and liquid crystal polymer (LCP). Patent number: WO 2005/064212 Inventor: M.S. Edwards Publication date: 14 July 2005
The layers of a plastic piston ring which are connected by a pin to prevent relative rotation, from WO 2005/064212.
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