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Threaded joint with high radial loads and differentially treated surfaces
PATENTS designed to overcome the problems of loss of sealing force due to creep experienced with PTFE gaskets. It is manufactured by using injection moulded PTFE that is moulded around an insert. The insert may be of metal or other suitable materials. Considerable detail on the insert and the retention in the mould is covered. Publication number: WO/2009/026974 Inventors: M. Schlipf et al. Publication date: 5 March 2009
Ampoule with a seal in two compression states Applicant: Roche Diagnostics GmbH, Germany A seal arrangement for syringe type devices is described. It is designed to facilitate long term storage when containing products such as insulin. To avoid excessive stress relaxation of the seals they may be positioned in a larger diameter bore until required to energise the contents. Facilities for sterilisation are also discussed. Publication number: WO/2009/027104 Inventors: R. Zihlmann et al. Publication date: 5 March 2009
Threaded joint with high radial loads and differentially treated surfaces Applicant: Tenaris Connections AG, Liechtenstein This oilfield threaded joint has an interference between thread roots of the pin and thread crests of the box between 1% and 5% of the average thickness of the connection. This ensures a high radial load in the thread and improved sealing. The root flank radius is specified and the beginning and end of the threaded zone of the pin are shot peened. Publication number: WO/2009/027308 Inventor: N.J. Santi Publication date: 5 March 2009
Loose flange pipe joint Applicant: Nowla Engineering Co. Ltd. Japan A pipe joint design includes an inwardly facing elastic V-section seal that is supported by a by a metallic reinforcing ring. The reinforcing ring that extends to the full flange diameter controls the compression of the elastomer and acts as an anti extrusion device. The arrangement is illustrated on the type of joint that employs loose flanges that butt up to a bevel on the pipe ends. Publication number: WO/2009/028322 Inventors: S. Matsumoto et al. Publication date: 5 March 2009 14
Sealing Technology
Multistage gasket Applicant: Bridgestone Corporation, Japan A sealant type gasket is applied in at least two stages. The purpose includes improving the reuse of the cover plate and base plate of a hard disk unit. The adhesion to the cover plate or the base plate to contact the gasket of the lowermost layer is higher than the adhesion to the highest layer. The adhesion of the lower layer is sufficient to remain intact in high humidity and be resistant to side forces such as scraping. Publication number: WO/2009/028335 Inventors: M. Uranaka et al. Publication date: 5 March 2009
Spring load seal assembly and well drilling equipment comprising same Applicant/Inventor: J.R. Williams, USA A top drive assembly for an oil well drill system has a bearing seal arrangement that includes axial wiper rings that can accommodate axial displacement of the bearing head. Publication number: WO/2009/029147 Publication date: 5 March 2009
Respirator face piece with thermoset elastomeric face seal Applicant: 3M Innovative Properties Co. USA This face mask has a silicone seal that is chemically bonded to the polymer face mask body. The purpose is to avoid the complexities of providing a mechanical attachment and sealing process. Publication number: WO/2009/029363 Inventors: P.J. Flannigan et al. Publication date: 5 March 2009
Respirator attachment component with moulded thermoset elastomeric seal Applicant: 3M Innovative Properties Co. USA A silicone seal is bonded to a respirator attachment, such as the respirator valve, with the process described in WO/2009/029363. Publication number: WO/2009/029364 Inventors: J.R. Betz et al. Publication date: 5 March 2009
Fluid filled seal for contacting the human body Applicant: Bristol-Myers Squibb Co. USA A medical device such as a controlled discharge ostomy appliance includes a fluid filled seal for sealing around a body orifice. There are one or more ports communicating with the fluid chamber; and resilient foam disposed within
the fluid chamber. The foam tends to expand the chamber to seal against the body. The port controls the inlet and exhaust of fluid from the chamber, in response to movement of the body away from, or towards, the seal. Publication number: WO/2009/029610 Inventor: J. Cline Publication date: 5 March 2009
Ball tube mill trunnion seal Applicant: Riley Power, Inc. USA A trunnion seal assembly for joining a stationary inlet/outlet box of a ball tube mill to the rotating drum is described. It is intended to replace a fairly conventional looking lip seal. The proposed seal is an axially acting flexible disc sealing against a rotating flange. A bearing may also be incorporated. Publication number: WO/2009/029837 Inventors: D.P. Smith et al. Publication date: 5 March 2009
Seal device having an inner diameter seal Applicant: Corrosion Control Corporation, USA A flange seal is described that appears to comprise a resilient V section inner seal supported on a flange described as the core. The radial faces of the flange are coated in a material such as epoxy. The purpose of the seal claimed in the patent is to provide improved sealing by utilizing the hydrodynamic and hydrostatic forces of the fluid contained in the flow line. It would also be advantageous if the sealing device could be fabricated from corrosion resistant materials which could resist corrosion in a highly corrosive environment. Another need in the current seal technology would be to provide a seal device that is less sensitive to exacting torque requirements so that there is no effect upon the performance of the seal device as a result thereof. Another need would be to provide a seal device that can be reused even though it has been used in prior operations. The resilient seal member may be formed from compressible materials suitable for sealing fluids such as: elastomers, metals, resins, and polymers such as polyetheretherketone, perfluorelastomers, and polytetrafluoroethylene. Publication number: WO/2009/029878 Inventors: T.S. Tanner et al. Publication date: 5 March 2009
Piston seal guide bearing Applicant: Graco Minnesota Inc. USA A piston pump for highly viscous fluids such
June 2009
Ampoule with a seal in two compression states Applicant: Roche Diagnostics GmbH, Germany A seal arrangement for syringe type devices is described. It is designed to facilitate long term storage when containing products such as insulin. To avoid excessive stress relaxation of the seals they may be positioned in a larger diameter bore until required to energise the contents. Facilities for sterilisation are also discussed. Publication number: WO/2009/027104 Inventors: R. Zihlmann et al. Publication date: 5 March 2009
Threaded joint with high radial loads and differentially treated surfaces Applicant: Tenaris Connections AG, Liechtenstein This oilfield threaded joint has an interference between thread roots of the pin and thread crests of the box between 1% and 5% of the average thickness of the connection. This ensures a high radial load in the thread and improved sealing. The root flank radius is specified and the beginning and end of the threaded zone of the pin are shot peened. Publication number: WO/2009/027308 Inventor: N.J. Santi Publication date: 5 March 2009
Loose flange pipe joint Applicant: Nowla Engineering Co. Ltd. Japan A pipe joint design includes an inwardly facing elastic V-section seal that is supported by a by a metallic reinforcing ring. The reinforcing ring that extends to the full flange diameter controls the compression of the elastomer and acts as an anti extrusion device. The arrangement is illustrated on the type of joint that employs loose flanges that butt up to a bevel on the pipe ends. Publication number: WO/2009/028322 Inventors: S. Matsumoto et al. Publication date: 5 March 2009 14
Sealing Technology
Multistage gasket Applicant: Bridgestone Corporation, Japan A sealant type gasket is applied in at least two stages. The purpose includes improving the reuse of the cover plate and base plate of a hard disk unit. The adhesion to the cover plate or the base plate to contact the gasket of the lowermost layer is higher than the adhesion to the highest layer. The adhesion of the lower layer is sufficient to remain intact in high humidity and be resistant to side forces such as scraping. Publication number: WO/2009/028335 Inventors: M. Uranaka et al. Publication date: 5 March 2009
Spring load seal assembly and well drilling equipment comprising same Applicant/Inventor: J.R. Williams, USA A top drive assembly for an oil well drill system has a bearing seal arrangement that includes axial wiper rings that can accommodate axial displacement of the bearing head. Publication number: WO/2009/029147 Publication date: 5 March 2009
Respirator face piece with thermoset elastomeric face seal Applicant: 3M Innovative Properties Co. USA This face mask has a silicone seal that is chemically bonded to the polymer face mask body. The purpose is to avoid the complexities of providing a mechanical attachment and sealing process. Publication number: WO/2009/029363 Inventors: P.J. Flannigan et al. Publication date: 5 March 2009
Respirator attachment component with moulded thermoset elastomeric seal Applicant: 3M Innovative Properties Co. USA A silicone seal is bonded to a respirator attachment, such as the respirator valve, with the process described in WO/2009/029363. Publication number: WO/2009/029364 Inventors: J.R. Betz et al. Publication date: 5 March 2009
Fluid filled seal for contacting the human body Applicant: Bristol-Myers Squibb Co. USA A medical device such as a controlled discharge ostomy appliance includes a fluid filled seal for sealing around a body orifice. There are one or more ports communicating with the fluid chamber; and resilient foam disposed within
the fluid chamber. The foam tends to expand the chamber to seal against the body. The port controls the inlet and exhaust of fluid from the chamber, in response to movement of the body away from, or towards, the seal. Publication number: WO/2009/029610 Inventor: J. Cline Publication date: 5 March 2009
Ball tube mill trunnion seal Applicant: Riley Power, Inc. USA A trunnion seal assembly for joining a stationary inlet/outlet box of a ball tube mill to the rotating drum is described. It is intended to replace a fairly conventional looking lip seal. The proposed seal is an axially acting flexible disc sealing against a rotating flange. A bearing may also be incorporated. Publication number: WO/2009/029837 Inventors: D.P. Smith et al. Publication date: 5 March 2009
Seal device having an inner diameter seal Applicant: Corrosion Control Corporation, USA A flange seal is described that appears to comprise a resilient V section inner seal supported on a flange described as the core. The radial faces of the flange are coated in a material such as epoxy. The purpose of the seal claimed in the patent is to provide improved sealing by utilizing the hydrodynamic and hydrostatic forces of the fluid contained in the flow line. It would also be advantageous if the sealing device could be fabricated from corrosion resistant materials which could resist corrosion in a highly corrosive environment. Another need in the current seal technology would be to provide a seal device that is less sensitive to exacting torque requirements so that there is no effect upon the performance of the seal device as a result thereof. Another need would be to provide a seal device that can be reused even though it has been used in prior operations. The resilient seal member may be formed from compressible materials suitable for sealing fluids such as: elastomers, metals, resins, and polymers such as polyetheretherketone, perfluorelastomers, and polytetrafluoroethylene. Publication number: WO/2009/029878 Inventors: T.S. Tanner et al. Publication date: 5 March 2009
Piston seal guide bearing Applicant: Graco Minnesota Inc. USA A piston pump for highly viscous fluids such
June 2009