PATENTS Inventors: M. Miyazawa and R. Yamakawa Publication date: 7 January 2010
system. Essentially, it is a mechanical face type seal that uses a pair of seal faces in a single, radial plane, with a buffer fluid located in the groove between the faces. Patent number: WO/2010/001470 Inventors: R. Nagaoka, M. Iezawa, K. Fukushima and A. Imagi Publication date: 7 January 2010
Metal-to-metal seal for smooth bore
Cartridge-type double seal Applicant: Eagle Industry Co Ltd, Japan A cartridge-type double seal, with a face-to-face configuration is described. It is small enough to be mounted on the outer surface of a device without using space in a stuffing box and without requiring any special design and modification. The securing method, which is not very obvious from the English abstract, results in a compact arrangement. Patent number: WO/2010/001683 Inventor: Y. Suefuji Publication date: 7 January 2010
A silicon carbide seal face with an overlay of synthetic resin, as described in patent WO/2010/001762.
subject of this patent. The seal face (50) comprises silicon carbide (52), having a high thermal conductivity, together with carbon particles (51) that are softer than the silicon carbide, a coating film (54) and a synthetic resin. Patent number: WO/2010/001762
Applicant: Vetco Gray Inc, USA This invention relates to oil and gas production from a sub-sea well, but in particular to a metal-to-metal seal for use in a tie-back connector. The metal seal is a ‘T-section’ (50) that is energised into position by the ramp sections on the underside of the ‘T’ and the mating components (22 and 38) when the tool is set. For some reason it still requires elastomer seals on the back-face (74). Patent number: WO/2010/002686 Inventors: J. Pallini, R.D. Lyle and C.-R. Lin Publication date: 7 January 2010
Joint for plastic resin pipe Applicant: Kabushiki Kaisha Tesuku, Japan This invention relates to a pipe joint. It is claimed that a pipe can be connected to the pipe joint by a one-touch operation. The end of the pipe is inserted into the pipe joint and a cap is manually tightened. The pipe does not rotate when the cap is rotated. The retention system is the main part of the patent. Sealing appears to be on a spigot joint that has a pair of O-rings located in a groove. Patent number: WO/2010/001719 Inventors: T. Sakuraba and T. Iura Publication date: 7 January 2010 Editor’s comment: The use of a pair of O-rings on a pipe joint for typical plastic pipe assembly procedures will require considerable caution to avoid over filling the inter-space with lubricant of any fluid that may be around.
Mechanical seal Applicant: Eagle Industry Co Ltd, Japan A mechanical seal designed for excellent corrosion resistance and abrasion resistance forms the
A metal-to-metal seal for use in oil and gas production wells (patent WO/2010/002686).