- Email: [email protected]
Seal for a centrifugal pump
PATENTS carrier, via the tolerance rings (70 & 71), antirotation element (76) and spring (58), so that it rotates with the shaft (57). The sealing rings (68 & 69) directly contact the runner (52) and the shaft (57) along the annular gap (72) about the tolerance rings (70 & 71). Patent number: WO/2014/143097 Inventor: T.M. Vasagar Publication date: 18 September 2014
Tool for removing sealant around a seal cap Applicant: The Boeing Co, USA This patent relates generally to seal caps, but particularly covers the installation of seal caps. It provides details of a method and apparatus for removing excess sealant that squeezes out whilst the seal cap is being installed. Patent number: WO/2014/143545 Inventors: J.R. Wiseman, R.A. Gage, M.G. Kesterson and S.J. Favilla Publication date: 18 September 2014
Valve seal assembly with relief volume Applicant: Novatech Holdings Corp, USA This patent provides details of an exemplary valve seal assembly that includes a valve body with one or more relief volumes that may extend circumferentially and are positioned in or adjacent to one or both an upper and lower member of the valve body. A compression seal is located adjacent to an opening of the relief volume and a seal is provided primarily in the volume between the upper and lower members. In an uncompressed state this compression seal is maintained adjacent to the opening of the relief volume. In a compressed state – when the valve seal assembly compressively engages the valve seat – the compression seal is compressed against the relief volume, and may be either fully or partially compressed into the relief volume. Desired relief-volume and seal-retention volume primary angles may be established. Patent number: WO/2014/144207 Inventors: R.M. Butler, K.R. Peach and M.P. Anderson Publication date: 18 September 2014
A cross-sectional perspective view of the radial shaft seal assembly with a scavenger pump seal constructed according to one aspect of patent WO/2014/145391.
Improved seal assembly Applicant: NLI Asker Subsea As, Norway This invention relates to an improved seal assembly. In particular, it relates to an assembly that is targeted at the oil and gas production industry where it can be used, for example, to seal a valve stem or be used in conjunction with fluid lines on a stab connector. In addition, the inventor says that it may be useful for other shaft-sealing applications, particularly where there is rotary or reciprocating movement (or both), but equally for use in static applications. The patent also relates to devices, such as valves and connectors, incorporating this new seal assembly. Patent number: WO/2014/140379 Inventor: A. Gundersen Publication date: 18 September 2014
Scavenger pump seal and radial shaft seal assembly Applicant: Federal-Mogul Corp, USA A scavenger pump seal (13) and radial shaft seal (11) assembly are described. The scavenger pump seal includes an inner case (26), configured for fixed attachment to a shaft (12) for conjoint rotation with the shaft, and an outer case (30), configured for fixed receipt in a hous-
ing in which the shaft rotates. The inner case has an innermost wall (32) sized to press-fit on the shaft and an outermost wall (34). An absorbent member (28) is fixed to the inner case. The outermost wall overlies the absorbent member, thereby preventing it (absorbent member) from moving radially outwards. The outer case has an outermost wall sized for fixed receipt in the housing (15), and prevents the egress of oil into the environment. Patent number: WO/2014/145391 Inventor: D.M. Toth Publication date: 18 September 2014
Seal for a centrifugal pump Applicant: Weir Slurry Group Inc, USA A seal for use in a centrifugal pump forms the subject of this patent. The pump has a stationary casing and plate, and an axially adjustable side liner. The seal includes a base with inner and outer surfaces. A band portion extends from the base and a retainer member extends from the band portion. The retainer member is spaced apart from the base and oriented so that it is positioned against a groove formed in the axially adjustable side plate liner of the pump. Patent number: WO/2014/144253 Inventors: R.J. Kosmicki and M.L. Viken Publication date: 18 September 2014
A SUBSCRIPTION INCLUDES: • Online access for 5 users • An archive of back issues
8 July 2015
www.sealingtechnology.info
Sealing Technology
15
Tool for removing sealant around a seal cap Applicant: The Boeing Co, USA This patent relates generally to seal caps, but particularly covers the installation of seal caps. It provides details of a method and apparatus for removing excess sealant that squeezes out whilst the seal cap is being installed. Patent number: WO/2014/143545 Inventors: J.R. Wiseman, R.A. Gage, M.G. Kesterson and S.J. Favilla Publication date: 18 September 2014
Valve seal assembly with relief volume Applicant: Novatech Holdings Corp, USA This patent provides details of an exemplary valve seal assembly that includes a valve body with one or more relief volumes that may extend circumferentially and are positioned in or adjacent to one or both an upper and lower member of the valve body. A compression seal is located adjacent to an opening of the relief volume and a seal is provided primarily in the volume between the upper and lower members. In an uncompressed state this compression seal is maintained adjacent to the opening of the relief volume. In a compressed state – when the valve seal assembly compressively engages the valve seat – the compression seal is compressed against the relief volume, and may be either fully or partially compressed into the relief volume. Desired relief-volume and seal-retention volume primary angles may be established. Patent number: WO/2014/144207 Inventors: R.M. Butler, K.R. Peach and M.P. Anderson Publication date: 18 September 2014
A cross-sectional perspective view of the radial shaft seal assembly with a scavenger pump seal constructed according to one aspect of patent WO/2014/145391.
Improved seal assembly Applicant: NLI Asker Subsea As, Norway This invention relates to an improved seal assembly. In particular, it relates to an assembly that is targeted at the oil and gas production industry where it can be used, for example, to seal a valve stem or be used in conjunction with fluid lines on a stab connector. In addition, the inventor says that it may be useful for other shaft-sealing applications, particularly where there is rotary or reciprocating movement (or both), but equally for use in static applications. The patent also relates to devices, such as valves and connectors, incorporating this new seal assembly. Patent number: WO/2014/140379 Inventor: A. Gundersen Publication date: 18 September 2014
Scavenger pump seal and radial shaft seal assembly Applicant: Federal-Mogul Corp, USA A scavenger pump seal (13) and radial shaft seal (11) assembly are described. The scavenger pump seal includes an inner case (26), configured for fixed attachment to a shaft (12) for conjoint rotation with the shaft, and an outer case (30), configured for fixed receipt in a hous-
ing in which the shaft rotates. The inner case has an innermost wall (32) sized to press-fit on the shaft and an outermost wall (34). An absorbent member (28) is fixed to the inner case. The outermost wall overlies the absorbent member, thereby preventing it (absorbent member) from moving radially outwards. The outer case has an outermost wall sized for fixed receipt in the housing (15), and prevents the egress of oil into the environment. Patent number: WO/2014/145391 Inventor: D.M. Toth Publication date: 18 September 2014
Seal for a centrifugal pump Applicant: Weir Slurry Group Inc, USA A seal for use in a centrifugal pump forms the subject of this patent. The pump has a stationary casing and plate, and an axially adjustable side liner. The seal includes a base with inner and outer surfaces. A band portion extends from the base and a retainer member extends from the band portion. The retainer member is spaced apart from the base and oriented so that it is positioned against a groove formed in the axially adjustable side plate liner of the pump. Patent number: WO/2014/144253 Inventors: R.J. Kosmicki and M.L. Viken Publication date: 18 September 2014
A SUBSCRIPTION INCLUDES: • Online access for 5 users • An archive of back issues
8 July 2015
www.sealingtechnology.info
Sealing Technology
15