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Seal chamber conditioning valve for a rotodynamic pump
PATENTS Publication number: WO/2008/093779 Inventors: Y. Okuno et al. Publication date: 7 August 2008
Publication number: WO/2008/094501 Inventor: K. Buschkopf Publication date: 7 August 2008
Hydrodynamic brush seal
A section of the cylinder head gasket described in WO/2008/093779.
Seal ring Applicans: NOK Corporation, Japan This patent describes a design of butt joint for pistons rings which from the description are used as shaft seals. The rings have a stepped butt joint and one half of the joint has a surface that slopes in the circumferential direction and is engaged by the opposing half of the ring. Publication number: WO/2008/093849 Inventors: Y. Kondo et al. Publication date: 7 August 2008
Seal assembly for retractable instrument Applicant: Sanford LP, USA A seal assembly for a retractable instrument having an applicator element, but specifically for retractable markers is described. A series of fingers surround the tip to seal it in the closed position. When the tip is extended the fingers are pushed aside. The design is such that the tip does not touch the seal lips when extending. Publication number: WO/2008/094376 Inventors: D.A. Dylkiewicz et al. Publication date: 7 August 2008
Seal chamber conditioning valve for a rotodynamic pump Applicant: Weir Slurry Group Inc, USA A system for controlling the fluid environment in the seal chamber of rotordynamic pumps is described. It is particularly designed for slurry pumps and aims to overcome problems that can occur with conventional flush systems in applications where for instance the slurry may contain air, or there is intermittent dry running. One or more valves are fitted to the seal chamber so that fluid can be either introduced or vented from the chamber as required depending on the application or chamber conditions. The system can also be used in conjunction with seal chamber condition monitoring to operate the valves depending on chamber conditions. 14
Sealing Technology
Applicant/Inventor: J.F. Justak, USA This patent describes a hybrid shoed brush seal for gas turbines. Each of the shoes is connected at discrete points to the end of the seal bristles such that the leading edge of the shoe is oriented to have less contact with the rotor or the stator than the trailing edge of the shoe. A spring element may be connected between the shoes and the housing which is flexible in the radial direction, but axially stiff. The spring element functions to assist in preventing roll over of the shoes to maintain an effective seal under pressure load. Publication number: WO/2008/094761 Publication date: 7 August 2008
Hub bearing arrangement and hub bearing seal Applicant: Scania CV AB, Sweden A hub seal and internal seal sleeve arrangement that is designed to ensure an even spread of grease within a truck wheel bearing hub, ensuring better use of grease during the life of the bearings. Publication number: WO/2008/097175 Inventor: U. Samuelsson Publication date: 14 August 2008
Seal for tube Applicants/Inventors: C.L. Johns et al., USA An inflatable seal that is intended for use in a chemical laboratory reactor flask is described. A number of tubes required for injection of chemicals, air supply etc can be fed through the body of the plug. An inflatable seal is used to seal the plug in position in the neck of the flask. Publication number: WO/2008/097769 Publication date: 14 August 2008
Cap with no attached seal Applicant: Crealise Conditionnement Inc, Canada This invention is a cap for a container that includes a double seal within the cap moulding, avoiding the requirement for a separate seal moulding. An additional feature is that there are at least two seals in different planes. A radial seal is designed to seal on the neck of the container and a multi-lip axial seal contacts the radial face on the top of the container adjacent to the opening. Publication number: WO/2008/098362 Inventors: G. Perrin et al. Publication date: 21 August 2008
A cap for a container that has integrally moulded seals on both the radial and axial faces, WO/2008/098362.
Piston rings Applicant: Federal-Mogul Burscheid GmbH, Germany This series of patents describe a method of applying a PVD layer to piston ring surfaces. The system ensures that the layer is deposited in the areas required which may be at the top and bottom of the rubbing surface, 098534, up to the sharp edge of a butt joint, 098546, or on the flanks, 098547. Publication numbers: WO/2008/098534, 098544, 098546, 098547 and 098548 Inventors: J. Esser et al. Publication date: 21 August 2008
Pin-and-socket connector having a seal Applicant: Hirschmann Automation and Control GmbH, Germany This invention relates to the sealing of a pinand-socket connector of the DIN plug type. The seal has a cross-section that is curved such that the narrow end region is attached to the face of the socket body and the wide end region protrudes freely to seal on the face of the mating connector. Publication number: WO/2008/098643 Inventors: A. Borkowitsch et al. Publication date: 21 August 2008
December 2008
Publication number: WO/2008/094501 Inventor: K. Buschkopf Publication date: 7 August 2008
Hydrodynamic brush seal
A section of the cylinder head gasket described in WO/2008/093779.
Seal ring Applicans: NOK Corporation, Japan This patent describes a design of butt joint for pistons rings which from the description are used as shaft seals. The rings have a stepped butt joint and one half of the joint has a surface that slopes in the circumferential direction and is engaged by the opposing half of the ring. Publication number: WO/2008/093849 Inventors: Y. Kondo et al. Publication date: 7 August 2008
Seal assembly for retractable instrument Applicant: Sanford LP, USA A seal assembly for a retractable instrument having an applicator element, but specifically for retractable markers is described. A series of fingers surround the tip to seal it in the closed position. When the tip is extended the fingers are pushed aside. The design is such that the tip does not touch the seal lips when extending. Publication number: WO/2008/094376 Inventors: D.A. Dylkiewicz et al. Publication date: 7 August 2008
Seal chamber conditioning valve for a rotodynamic pump Applicant: Weir Slurry Group Inc, USA A system for controlling the fluid environment in the seal chamber of rotordynamic pumps is described. It is particularly designed for slurry pumps and aims to overcome problems that can occur with conventional flush systems in applications where for instance the slurry may contain air, or there is intermittent dry running. One or more valves are fitted to the seal chamber so that fluid can be either introduced or vented from the chamber as required depending on the application or chamber conditions. The system can also be used in conjunction with seal chamber condition monitoring to operate the valves depending on chamber conditions. 14
Sealing Technology
Applicant/Inventor: J.F. Justak, USA This patent describes a hybrid shoed brush seal for gas turbines. Each of the shoes is connected at discrete points to the end of the seal bristles such that the leading edge of the shoe is oriented to have less contact with the rotor or the stator than the trailing edge of the shoe. A spring element may be connected between the shoes and the housing which is flexible in the radial direction, but axially stiff. The spring element functions to assist in preventing roll over of the shoes to maintain an effective seal under pressure load. Publication number: WO/2008/094761 Publication date: 7 August 2008
Hub bearing arrangement and hub bearing seal Applicant: Scania CV AB, Sweden A hub seal and internal seal sleeve arrangement that is designed to ensure an even spread of grease within a truck wheel bearing hub, ensuring better use of grease during the life of the bearings. Publication number: WO/2008/097175 Inventor: U. Samuelsson Publication date: 14 August 2008
Seal for tube Applicants/Inventors: C.L. Johns et al., USA An inflatable seal that is intended for use in a chemical laboratory reactor flask is described. A number of tubes required for injection of chemicals, air supply etc can be fed through the body of the plug. An inflatable seal is used to seal the plug in position in the neck of the flask. Publication number: WO/2008/097769 Publication date: 14 August 2008
Cap with no attached seal Applicant: Crealise Conditionnement Inc, Canada This invention is a cap for a container that includes a double seal within the cap moulding, avoiding the requirement for a separate seal moulding. An additional feature is that there are at least two seals in different planes. A radial seal is designed to seal on the neck of the container and a multi-lip axial seal contacts the radial face on the top of the container adjacent to the opening. Publication number: WO/2008/098362 Inventors: G. Perrin et al. Publication date: 21 August 2008
A cap for a container that has integrally moulded seals on both the radial and axial faces, WO/2008/098362.
Piston rings Applicant: Federal-Mogul Burscheid GmbH, Germany This series of patents describe a method of applying a PVD layer to piston ring surfaces. The system ensures that the layer is deposited in the areas required which may be at the top and bottom of the rubbing surface, 098534, up to the sharp edge of a butt joint, 098546, or on the flanks, 098547. Publication numbers: WO/2008/098534, 098544, 098546, 098547 and 098548 Inventors: J. Esser et al. Publication date: 21 August 2008
Pin-and-socket connector having a seal Applicant: Hirschmann Automation and Control GmbH, Germany This invention relates to the sealing of a pinand-socket connector of the DIN plug type. The seal has a cross-section that is curved such that the narrow end region is attached to the face of the socket body and the wide end region protrudes freely to seal on the face of the mating connector. Publication number: WO/2008/098643 Inventors: A. Borkowitsch et al. Publication date: 21 August 2008
December 2008