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Threaded joint with energizable seal
PATENTS
Patents Piston ring Applicant: Mahle International GmbH, Germany A section of the piston ring body close to the ring joint is made of material with a lower thermal expansion coefficient than the remainder of the ring body. Publication number: WO/2009/000245 Inventor: W. Issler Publication date: 31 December 2008
Flinger for a seal assembly Applicant: AB SKF, Sweden This patent relates to the sealing of taper roller bearings on railway truck axle bearings, the flinger also acts as the running surface for the bearing seal. The purpose is to provide a reliable flinger assembly that is corrosion and wear resistant with good conductivity. This flinger has a black oxide layer for the seal lip contact zone. Publication number: WO/2009/000303 Inventors: X.B. Zhou et al. Publication date: 31 December 2008
Threaded joint with energizable seal Applicant: Tenaris Connections AG, Liechtenstein An oil industry threaded tubular joint that is designed to provide additional protection to penetration of either well-bore or external fluids into the thread of the joint. A U-ring section seal is used at the outer end of the joint mates with a stepped and tapered section of the mating pipe. The seal has a reinforcing ring to ensure retention during assembly. A number of variations in geometry are illustrated. Publication number: WO/2009/000766 Inventors: N.J. Santi et al. Publication date: 31 December 2008
Sealing gasket Applicants/Inventors: A.P. Epishov and I.P. Kleptsov, Russia A gasket that is designed to provide wide fluid resistance and be easy to remove and replace is described. A particular benefit quoted is the ability to replace gaskets without needing to clean flanges. An expanded graphite core is coated by spirally winding several layers of PTFE tape around the gasket. Various porosities of the PTFE tape may be used. A corrugated cardboard centring ring is also used to facilitate assembly. Publication number: WO/2009/002231 Publication date: 31 December 2008
Microfluidic device with elastomeric seal Applicant: Welch Allyn Inc, USA The invention comprises a low cost method of sealing and resealing a micro-fluidic device before, during, and after communication of fluids into the device. The ports are hermetically sealed with elastomeric plugs. Needles can be used to inject fluids into the device through the plugs while maintaining a hermetic seal. On removal of the needle the plug self-reseals. Publication number: WO/2009/002334 Inventor: D. Danna Publication date: 31 December 2008
Mechanical seal with superior thermal performance Applicant: The Board of Supervisors of Louisiana State University and Agricultural and Mechanical College, USA This invention is designed to provide a
mechanical seal with improved cooling that would avoid the use of additional seal cooling circuits. The stationary seal ring has a groove on the outside circumference with what is described as a fin. A second groove and fin may also be used. The ring is preferably constructed from 17-4-PH stainless steel, which is precipitation hardened, although other materials including silicon carbide are included. Publication number: WO/2009/002373 Inventors: M.M. Khonsari et al. Publication date: 31 December 2008 Editor’s comment: Unless I am missing something this hardly seems to be a new idea. And why make the seal ring from stainless steel?
Rigid gasket aseptic connector Applicant/Inventor: T.D. Johnson, USA This gasket is designed for use in laboratory equipment and is intended to be disposable for hygienic applications. It is intended to avoid the male/female connections used on much laboratory equipment and allow the use of common flanges. The gasket has a similar hardness to the flanges and also includes some tabs. The actual sealing method is not easily discernible. Publication number: WO/2009/002468 Publication date: 31 December 2008
Seal for a container Applicant: Illinois Tool Works Inc, USA A seal for a container for polyester bottles for potable liquids is designed to facilitate recycling. It comprises a metal foil layer, a foam layer and a plastic film layer together with a heat sealable layer below the foil. The foam is selected for its density and thickness to give the
Threaded joint with pressurizable seal Applicant: Tenaris Connections AG, Liechtenstein A further design of oil field tubular joint is described. This design has a seal that is retracted during assembly of the pipe but which can then be remotely energised. A pressure connection in the pipe wall facilitates the application of pressure to energise the seal. Publication number: WO/2009/000851 Inventors: N.J. Santi et al. Publication date: 31 December 2008
May 2009
The longitudinal seal (7) and transverse seal (8) merge with each other on a constant curvature for this hydrostatic guide, WO/2009/003844.
Sealing Technology
11
Patents Piston ring Applicant: Mahle International GmbH, Germany A section of the piston ring body close to the ring joint is made of material with a lower thermal expansion coefficient than the remainder of the ring body. Publication number: WO/2009/000245 Inventor: W. Issler Publication date: 31 December 2008
Flinger for a seal assembly Applicant: AB SKF, Sweden This patent relates to the sealing of taper roller bearings on railway truck axle bearings, the flinger also acts as the running surface for the bearing seal. The purpose is to provide a reliable flinger assembly that is corrosion and wear resistant with good conductivity. This flinger has a black oxide layer for the seal lip contact zone. Publication number: WO/2009/000303 Inventors: X.B. Zhou et al. Publication date: 31 December 2008
Threaded joint with energizable seal Applicant: Tenaris Connections AG, Liechtenstein An oil industry threaded tubular joint that is designed to provide additional protection to penetration of either well-bore or external fluids into the thread of the joint. A U-ring section seal is used at the outer end of the joint mates with a stepped and tapered section of the mating pipe. The seal has a reinforcing ring to ensure retention during assembly. A number of variations in geometry are illustrated. Publication number: WO/2009/000766 Inventors: N.J. Santi et al. Publication date: 31 December 2008
Sealing gasket Applicants/Inventors: A.P. Epishov and I.P. Kleptsov, Russia A gasket that is designed to provide wide fluid resistance and be easy to remove and replace is described. A particular benefit quoted is the ability to replace gaskets without needing to clean flanges. An expanded graphite core is coated by spirally winding several layers of PTFE tape around the gasket. Various porosities of the PTFE tape may be used. A corrugated cardboard centring ring is also used to facilitate assembly. Publication number: WO/2009/002231 Publication date: 31 December 2008
Microfluidic device with elastomeric seal Applicant: Welch Allyn Inc, USA The invention comprises a low cost method of sealing and resealing a micro-fluidic device before, during, and after communication of fluids into the device. The ports are hermetically sealed with elastomeric plugs. Needles can be used to inject fluids into the device through the plugs while maintaining a hermetic seal. On removal of the needle the plug self-reseals. Publication number: WO/2009/002334 Inventor: D. Danna Publication date: 31 December 2008
Mechanical seal with superior thermal performance Applicant: The Board of Supervisors of Louisiana State University and Agricultural and Mechanical College, USA This invention is designed to provide a
mechanical seal with improved cooling that would avoid the use of additional seal cooling circuits. The stationary seal ring has a groove on the outside circumference with what is described as a fin. A second groove and fin may also be used. The ring is preferably constructed from 17-4-PH stainless steel, which is precipitation hardened, although other materials including silicon carbide are included. Publication number: WO/2009/002373 Inventors: M.M. Khonsari et al. Publication date: 31 December 2008 Editor’s comment: Unless I am missing something this hardly seems to be a new idea. And why make the seal ring from stainless steel?
Rigid gasket aseptic connector Applicant/Inventor: T.D. Johnson, USA This gasket is designed for use in laboratory equipment and is intended to be disposable for hygienic applications. It is intended to avoid the male/female connections used on much laboratory equipment and allow the use of common flanges. The gasket has a similar hardness to the flanges and also includes some tabs. The actual sealing method is not easily discernible. Publication number: WO/2009/002468 Publication date: 31 December 2008
Seal for a container Applicant: Illinois Tool Works Inc, USA A seal for a container for polyester bottles for potable liquids is designed to facilitate recycling. It comprises a metal foil layer, a foam layer and a plastic film layer together with a heat sealable layer below the foil. The foam is selected for its density and thickness to give the
Threaded joint with pressurizable seal Applicant: Tenaris Connections AG, Liechtenstein A further design of oil field tubular joint is described. This design has a seal that is retracted during assembly of the pipe but which can then be remotely energised. A pressure connection in the pipe wall facilitates the application of pressure to energise the seal. Publication number: WO/2009/000851 Inventors: N.J. Santi et al. Publication date: 31 December 2008
May 2009
The longitudinal seal (7) and transverse seal (8) merge with each other on a constant curvature for this hydrostatic guide, WO/2009/003844.
Sealing Technology
11