- Email: [email protected]
Piston rod seal on pumps for cryogenic media
PATENTS Dosing cap with hermetic seal Applicant: Liteco Srl, Italy A sealing membrane for a pharmaceutical dosing cap is described. The membrane separates two constituents of drug system and is
ruptured by depression of the cap when they are to be mixed. Patent number: WO 2007/006414 Inventor: L. Saulle Publication date: 18 January 2007
Joint strip Applicant: Sika Technology AG, Switzerland This is a joint strip for use in buildings. The flat strip has surface projections that are used to retain
sealing strips as required. A variety of geometries are described. Patent number: WO 2007/006743 Inventors: S. Lemke and R. Förstler Publication date: 18 January 2007
Forming a hermetic seal about a cable Applicant: Aquapac International Ltd, UK This patent describes a cable gland and housing. It is designed to protect the electronics in the housing from water damage even after repeated
openings and also to allow the cable to slide within the gland assembly while providing a hermetic seal. Patent number: WO 2007/007046 Inventors: A.S. Macauley et al. Publication date: 18 January 2007
Labyrinth seal assembly Applicant: Isotech of Illinois Inc, USA A labyrinth seal that is designed to allow for radial, axial and angular misalignment of the shaft is described. The labyrinth is a straight through design and a defined clearance on the shaft. The seal is mounted in a ball joint assembly that is also free to move
radially within the seal housing. A vent port is provided part way along the labyrinth to equalize pressure or allow for application of a sealing pressure to the seal. Patent number: WO 2007/008270 Inventors: D.C. Orlowski and N.F. Hoehle Publication date: 18 January 2007
Piston rod seal on pumps for cryogenic media Applicant: Cryomec AG, Switzerland The sealing arrangement described for a reciprocating cryogenic compressor comprises at least two sections of labyrinth seal. The labyrinth seal sections are loaded axially into each other but are designed as a
clearance on both the bore and outside diameter. The labyrinth seals are manufactured from PTFE with an option of glass fibre filling. Patent number: WO 2007/009278 Inventors: P. Drouvot and M. Koerper Publication date: 25 January 2007
Mechanical seal assembly Applicants: G.A. Gold Seal Development Ltd c/c KPMG Peat Marwick, Cyprus This patent describes a double mechanical seal system that is particularly intended for abrasives and other harsh applications. In order to provide cooling flow
circulation close to the seal faces, a series of axial grooves are machined in the shaft sleeve. The design also provides a drive or anti-rotation method that is claimed to be more resistant to wear in abrasive duties. Patent number: WO 2007/001233 Inventor: G. Anderberg Publication date: 4 January 2007
Shaft seal with flexible independent tandem sealing lips Applicant: Federal-Mogul Corporation, USA This rotary shaft lip seal has tandem sealing lips, one of elastomer and the second of PTFE. The elastomer lip is designed for improved sealing performance. The two sealing lips are designed to be flexible independently
of each other. The PTFE lip is bonded to an elastomer flexible hinge that is designed to provide the optimum flexibility to the PTFE. Several alternative configurations are illustrated. Patent number: WO 2006/138100 Inventor: C. Madigan Publication date: 28 December 2006
Example of a rotary shaft lip seal that has tandem seal lips with a primary elastomer and secondary PTFE lips, from WO 2006/138100.
12
Labyrinth seal on a cryogenic compressor with the sections of seal compressed axially together, from WO 2007/009278.
Sealing Technology April 2007
ruptured by depression of the cap when they are to be mixed. Patent number: WO 2007/006414 Inventor: L. Saulle Publication date: 18 January 2007
Joint strip Applicant: Sika Technology AG, Switzerland This is a joint strip for use in buildings. The flat strip has surface projections that are used to retain
sealing strips as required. A variety of geometries are described. Patent number: WO 2007/006743 Inventors: S. Lemke and R. Förstler Publication date: 18 January 2007
Forming a hermetic seal about a cable Applicant: Aquapac International Ltd, UK This patent describes a cable gland and housing. It is designed to protect the electronics in the housing from water damage even after repeated
openings and also to allow the cable to slide within the gland assembly while providing a hermetic seal. Patent number: WO 2007/007046 Inventors: A.S. Macauley et al. Publication date: 18 January 2007
Labyrinth seal assembly Applicant: Isotech of Illinois Inc, USA A labyrinth seal that is designed to allow for radial, axial and angular misalignment of the shaft is described. The labyrinth is a straight through design and a defined clearance on the shaft. The seal is mounted in a ball joint assembly that is also free to move
radially within the seal housing. A vent port is provided part way along the labyrinth to equalize pressure or allow for application of a sealing pressure to the seal. Patent number: WO 2007/008270 Inventors: D.C. Orlowski and N.F. Hoehle Publication date: 18 January 2007
Piston rod seal on pumps for cryogenic media Applicant: Cryomec AG, Switzerland The sealing arrangement described for a reciprocating cryogenic compressor comprises at least two sections of labyrinth seal. The labyrinth seal sections are loaded axially into each other but are designed as a
clearance on both the bore and outside diameter. The labyrinth seals are manufactured from PTFE with an option of glass fibre filling. Patent number: WO 2007/009278 Inventors: P. Drouvot and M. Koerper Publication date: 25 January 2007
Mechanical seal assembly Applicants: G.A. Gold Seal Development Ltd c/c KPMG Peat Marwick, Cyprus This patent describes a double mechanical seal system that is particularly intended for abrasives and other harsh applications. In order to provide cooling flow
circulation close to the seal faces, a series of axial grooves are machined in the shaft sleeve. The design also provides a drive or anti-rotation method that is claimed to be more resistant to wear in abrasive duties. Patent number: WO 2007/001233 Inventor: G. Anderberg Publication date: 4 January 2007
Shaft seal with flexible independent tandem sealing lips Applicant: Federal-Mogul Corporation, USA This rotary shaft lip seal has tandem sealing lips, one of elastomer and the second of PTFE. The elastomer lip is designed for improved sealing performance. The two sealing lips are designed to be flexible independently
of each other. The PTFE lip is bonded to an elastomer flexible hinge that is designed to provide the optimum flexibility to the PTFE. Several alternative configurations are illustrated. Patent number: WO 2006/138100 Inventor: C. Madigan Publication date: 28 December 2006
Example of a rotary shaft lip seal that has tandem seal lips with a primary elastomer and secondary PTFE lips, from WO 2006/138100.
12
Labyrinth seal on a cryogenic compressor with the sections of seal compressed axially together, from WO 2007/009278.
Sealing Technology April 2007