- Email: [email protected]
Fuel-cell seal
PATENTS 4. Tatemoto, M. and Amano, T., US Patent 4 487 903, (1984). 5. Ojakaar, L., Schnell, R.W. and Senior, K.A., (to E.I. DuPont de Nemours and Co), US Patent 5 268 405, (1993). 6. Ojakaar, L., Schnell, R.W. and Senior, K.A., (to E.I. DuPont de Nemours and Co), Patent WO 94/22952, (1994).
PATENTS High-pressure fluid swivel consisting of a multi-seal pressure regulation system Applicant: Single Buoy Moorings Inc, Switzerland This invention relates to a high-pressure swivel that is designed for use in the oil industry. Offshore floating production processes have slowly advanced into ever deeper water, where large quantities of oil remain to be found. Because of their depth, the reservoirs found in these areas tend to have a high pressure and temperature (600 bar and 130°C) – physical parameters that start to encroach on known sealing materials’ ability to seal the extrusion gaps that can be achieved in these swivels. An aim of this invention is to provide a means by which existing and future sealing technology can be extended to seal high-pressure and high temperature fluids. It also aims to provide a reliable swivel seal that is able to operate at relatively high pressures and temperatures. This is achieved by using a tandem seal arrangement and controlling the inter-space pressure. The control systems are discussed in detail. Patent number: WO/2010/046404 Inventor: J. Pollack Publication date: 29 April 2010
Deep section, narrow-width gaskets Applicants: NOK Corp, Japan, and Mahle Filter Systems Japan Corp, Japan A gasket, designed to provide a deep section, narrow-width structure that is stable within a groove is described by this patent. It is provided with a continuous ridge that extends in the longitudinal direction of the gasket. When the gasket is held in position – by being sandwiched between a head cover and a cylinder head – the ridge is in contact with an inner-wall surface of a groove to stabilise the attitude of the gasket. Patent number: WO/2010/047165 Inventors: S. Yoshitsune, M. Ito,
September 2010
7. Navarrini, W., (to Ausimont SpA), US Patent 2001/0051753A1, (2001). 8. Triulzi, F., Albano, M. and Stanga, M., (to Solvay Solexis SpA), Patent WO 07/082.867, (2007). 9. Apostolo, M., Triulzi, F., Tortelli, V. and Galimberti, M., (to Solvay Solexis SpA), US Patent 2006/0025528, (2005).
10.Apostolo, M., Triulzi, F., Tortelli, V. and Galimberti, M., (to Solvay Solexis SpA), US Patent 2006/0025529, (2005).
T. Koyama and S. Tani Publication date: 29 April 2010
A rather different design of seal for a rock-bit bearing is disclosed. It is designed to overcome inherent problems of both elastomer and metal face seals used in this application. It is composed of an elastomer seal, plus what is described as a rigid ring to locate the seal. A range of inside and outside acting seals are described and the rigid ring is also said to act as a diaphragm. The way in which it operates is not obvious, because of a problem of aligning the text and drawing annotation. Patent number: WO/2010/047721 Inventor: G.W. Peterson Publication date: 29 April 2010
Threaded joint for steel pipes Applicants: Sumitomo Metal Industries Ltd, Japan, and Vallourec Mannesmann Oil & Gas, France The screwed pipe joint that is detailed by this patent is designed to improve sealing in high-pressure and horizontal wells. It also permits the use of a pipe that has a reduced thickness. Combinations of tapered and curved surfaces are used for the sealing section of the connection. Patent number: WO/2010/047406 Inventors: T. Okada, K. Nakamura, M. Sugino and S. Yamaguchi Publication date: 29 April 2010
Fuel-cell seal Applicant: UTC Power Corp, USA Many solid oxide fuel cells (SOFCs) include a tri-layer cell that has an electrolyte layer positioned between a cathode electrode and an anode electrode. A wide range of tri-layer seals and materials, plus production methods, are covered by this patent. Patent number: WO/2010/047692 Inventor: J. Yamanis Publication date: 29 April 2010
Fuel-cell stack assembly seal Applicant: UTC Power Corp, USA In this invention, the seals are replaced by a sealant that is applied to the anode, cathode and the electrode assembly in order to separate the fuel and oxidant flow fields. Patent number: WO/2010/047697 Inventors: T.W. Patterson, T. Skiba and D.D. Jayne Publication date: 29 April 2010
Seal assembly for a rotary earth bit Applicant: Atlas Copco Secoroc Llc, USA
Contact: Solvay Solexis SpA, Viale Lombardia 20, 20021 Bollate (MI), Italy. Tel: +39 02 3835 6581, Fax: +39 02 3835 6574, Email: [email protected], Web: www.solvaysolexis.com
Glow-plug assembly with improved seal Applicant: Federal-Mogul Ignition Co, USA A glow-plug assembly has been developed. It is designed for use in engines in which high operating temperatures do not allow seals that rely on elastomer O-rings to be used. The heating element and end of the electrode are received in a sheath. A packing powder is disposed in the sheath about the heating element. Furthermore, a ceramic seal has an outer surface attached to the sheath by a brazed joint and an inner surface attached to the electrode by a brazed joint. This provides hermetic sealing between the packing powder and an environment external to the sheath. This seal also has the advantage of providing an improved hermetic seal against moisture and oxygen ingress which should extend the heating element’s service life. Patent number: WO/2010/048372 Inventor: W.J. Walkert Publication date: 29 April 2010
Cannula seal Applicants/Inventors: M. Patton, R. Mazzolla and M. Jen – USA Trocar seal assemblies are disclosed that consist of protective and retaining members. The protective member prevents the retaining member from being accidentally perforated during the insertion of an instrument through the seal assembly and assists in forming a seal against the instrument when
Sealing Technology
13
PATENTS High-pressure fluid swivel consisting of a multi-seal pressure regulation system Applicant: Single Buoy Moorings Inc, Switzerland This invention relates to a high-pressure swivel that is designed for use in the oil industry. Offshore floating production processes have slowly advanced into ever deeper water, where large quantities of oil remain to be found. Because of their depth, the reservoirs found in these areas tend to have a high pressure and temperature (600 bar and 130°C) – physical parameters that start to encroach on known sealing materials’ ability to seal the extrusion gaps that can be achieved in these swivels. An aim of this invention is to provide a means by which existing and future sealing technology can be extended to seal high-pressure and high temperature fluids. It also aims to provide a reliable swivel seal that is able to operate at relatively high pressures and temperatures. This is achieved by using a tandem seal arrangement and controlling the inter-space pressure. The control systems are discussed in detail. Patent number: WO/2010/046404 Inventor: J. Pollack Publication date: 29 April 2010
Deep section, narrow-width gaskets Applicants: NOK Corp, Japan, and Mahle Filter Systems Japan Corp, Japan A gasket, designed to provide a deep section, narrow-width structure that is stable within a groove is described by this patent. It is provided with a continuous ridge that extends in the longitudinal direction of the gasket. When the gasket is held in position – by being sandwiched between a head cover and a cylinder head – the ridge is in contact with an inner-wall surface of a groove to stabilise the attitude of the gasket. Patent number: WO/2010/047165 Inventors: S. Yoshitsune, M. Ito,
September 2010
7. Navarrini, W., (to Ausimont SpA), US Patent 2001/0051753A1, (2001). 8. Triulzi, F., Albano, M. and Stanga, M., (to Solvay Solexis SpA), Patent WO 07/082.867, (2007). 9. Apostolo, M., Triulzi, F., Tortelli, V. and Galimberti, M., (to Solvay Solexis SpA), US Patent 2006/0025528, (2005).
10.Apostolo, M., Triulzi, F., Tortelli, V. and Galimberti, M., (to Solvay Solexis SpA), US Patent 2006/0025529, (2005).
T. Koyama and S. Tani Publication date: 29 April 2010
A rather different design of seal for a rock-bit bearing is disclosed. It is designed to overcome inherent problems of both elastomer and metal face seals used in this application. It is composed of an elastomer seal, plus what is described as a rigid ring to locate the seal. A range of inside and outside acting seals are described and the rigid ring is also said to act as a diaphragm. The way in which it operates is not obvious, because of a problem of aligning the text and drawing annotation. Patent number: WO/2010/047721 Inventor: G.W. Peterson Publication date: 29 April 2010
Threaded joint for steel pipes Applicants: Sumitomo Metal Industries Ltd, Japan, and Vallourec Mannesmann Oil & Gas, France The screwed pipe joint that is detailed by this patent is designed to improve sealing in high-pressure and horizontal wells. It also permits the use of a pipe that has a reduced thickness. Combinations of tapered and curved surfaces are used for the sealing section of the connection. Patent number: WO/2010/047406 Inventors: T. Okada, K. Nakamura, M. Sugino and S. Yamaguchi Publication date: 29 April 2010
Fuel-cell seal Applicant: UTC Power Corp, USA Many solid oxide fuel cells (SOFCs) include a tri-layer cell that has an electrolyte layer positioned between a cathode electrode and an anode electrode. A wide range of tri-layer seals and materials, plus production methods, are covered by this patent. Patent number: WO/2010/047692 Inventor: J. Yamanis Publication date: 29 April 2010
Fuel-cell stack assembly seal Applicant: UTC Power Corp, USA In this invention, the seals are replaced by a sealant that is applied to the anode, cathode and the electrode assembly in order to separate the fuel and oxidant flow fields. Patent number: WO/2010/047697 Inventors: T.W. Patterson, T. Skiba and D.D. Jayne Publication date: 29 April 2010
Seal assembly for a rotary earth bit Applicant: Atlas Copco Secoroc Llc, USA
Contact: Solvay Solexis SpA, Viale Lombardia 20, 20021 Bollate (MI), Italy. Tel: +39 02 3835 6581, Fax: +39 02 3835 6574, Email: [email protected], Web: www.solvaysolexis.com
Glow-plug assembly with improved seal Applicant: Federal-Mogul Ignition Co, USA A glow-plug assembly has been developed. It is designed for use in engines in which high operating temperatures do not allow seals that rely on elastomer O-rings to be used. The heating element and end of the electrode are received in a sheath. A packing powder is disposed in the sheath about the heating element. Furthermore, a ceramic seal has an outer surface attached to the sheath by a brazed joint and an inner surface attached to the electrode by a brazed joint. This provides hermetic sealing between the packing powder and an environment external to the sheath. This seal also has the advantage of providing an improved hermetic seal against moisture and oxygen ingress which should extend the heating element’s service life. Patent number: WO/2010/048372 Inventor: W.J. Walkert Publication date: 29 April 2010
Cannula seal Applicants/Inventors: M. Patton, R. Mazzolla and M. Jen – USA Trocar seal assemblies are disclosed that consist of protective and retaining members. The protective member prevents the retaining member from being accidentally perforated during the insertion of an instrument through the seal assembly and assists in forming a seal against the instrument when
Sealing Technology
13