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Rotary seal that uses mixed ferrofluid
PATENTS second ferrofluid. Also discussed is a first predefined carrier liquid; a second predefined carrier liquid, which is not identical to the first carrier liquid, but is at least partially miscible and chemically compatible with the second carrier liquid; at least one or more dispersants that are partially miscible in both carrier liquids; and a plurality of finely divided magnetic particles. Patent number: WO/2015/183293 Inventor: K. Raj Publication date: 3 December 2015
PATENTS Apparatus for clamping flanges and other connections Applicant: Flange Cuff Llc, USA A clamp assembly has been developed for temporarily applying a compressive force to a flange connection assembly, such as a bolted pipe flange. Frame members are pivotally attached to interconnecting linkage members in order to form an elongate assembly that has joinable ends. When installed around the circumference of a flange connection assembly, interchangeable cuff members, attached to the frame members, apply compressive forces to the flange connection assembly in order to create a seal. Patent number: WO/2015/175486 Inventor: C.W. Fontenot Publication date: 19 November 2015
Degradable fluid sealing compositions incorporating non-degradable micro-particulate Applicant: Halliburton Energy Services Inc, USA Sometimes it is desirable to form a temporary fluid seal in a subterranean formation in conjunction with performing various operations. In this patent methods are described for creating a temporary fluid seal in such a formation. They involve producing a sealing composition that comprises a plurality of degradable particulates and a plurality of water-insoluble micro-particulates. This composition is then introduced into the subterranean formation to create a degradable fluid seal, which is capable of blocking or diverting fluid flow. Patent number: WO/2015/174961 Inventors: P.D. Nguyen, J.C. Montalvo and J.W. Ogle Publication date: 19 November 2015
Gasket for a fuel cell Applicant: NOK Corp, Japan The subject of this patent is a gasket (1) that is disposed between constituting parts (2 & 3) of a fuel cell. The gasket described is configured in such a way that it ensures consistent sealing properties, but also reduces the thickness of the fuel-cell constituting parts. In order to achieve these objectives, the gasket is provided with: an inner peripheral seal section (11), comprising seal ridges (11a & 11b). These are provided on both sides of the inner peripheral seal section, in the direction of its thickness and come into close contact with the fuel-cell constituting parts. An outer peripheral support
October 2016
Radial seal with contacting and non-contacting portions Applicant: Aktiebolaget SKF, Sweden This invention concerns a seal unit for enclosing a radial gap between coaxial, inner and outer mem-
Patent WO/2015/174235 provides details of a gasket (1) that is disposed between constituting parts (2 & 3) of a fuel cell. The lower illustration shows this gasket interposed in a suitable compressed state between the separators 2 and 3 of the fuel-cell component, the inner periphery sealing portion (11) and a sealing protrusion (11a).
section (12) is located on the outer peripheral side of the inner peripheral seal section (11), including support ridges (12a & 12b) that are provided on both sides of the outer peripheral support section (12), in the direction of its thickness, and which come into close contact with the fuel-cell constituting parts. An intermediate section (13) connects the inner peripheral seal section (11) and the outer peripheral support section (12). Patent number: WO/2015/174235 Inventor: T. Horimoto Publication date: 19 November 2015
Rotary seal that uses mixed ferrofluid Applicant: Ferrotec (USA) Corp, USA This invention relates generally to ferrofluids used in vacuum seals, but in particular to ferrofluidic seals using a plurality of ferrofluids. The associated patent covers a ferrofluid mixture for use in a ferrofluid rotary seal. It describes a first ferrofluid that has a predefined carrier liquid and a second ferrofluid, mixed with the first ferrofluid. The second ferrofluid has a predefined carrier liquid that is not identical to the predefined carrier liquid of the first ferrofluid. The first ferrofluid is at least partially miscible with (and chemically compatible with) the
The seal unit detailed by patent WO/2015/180928 is designed to enclose a radial gap between coaxial components that rotate relative to each other. The seal comprises both a contact portion, in the form of a seal lip, and a non-contact portion, in the form of a labyrinth seal. The figure above shows radial cross-sections through part of the seal unit that is described.
Sealing Technology
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PATENTS Apparatus for clamping flanges and other connections Applicant: Flange Cuff Llc, USA A clamp assembly has been developed for temporarily applying a compressive force to a flange connection assembly, such as a bolted pipe flange. Frame members are pivotally attached to interconnecting linkage members in order to form an elongate assembly that has joinable ends. When installed around the circumference of a flange connection assembly, interchangeable cuff members, attached to the frame members, apply compressive forces to the flange connection assembly in order to create a seal. Patent number: WO/2015/175486 Inventor: C.W. Fontenot Publication date: 19 November 2015
Degradable fluid sealing compositions incorporating non-degradable micro-particulate Applicant: Halliburton Energy Services Inc, USA Sometimes it is desirable to form a temporary fluid seal in a subterranean formation in conjunction with performing various operations. In this patent methods are described for creating a temporary fluid seal in such a formation. They involve producing a sealing composition that comprises a plurality of degradable particulates and a plurality of water-insoluble micro-particulates. This composition is then introduced into the subterranean formation to create a degradable fluid seal, which is capable of blocking or diverting fluid flow. Patent number: WO/2015/174961 Inventors: P.D. Nguyen, J.C. Montalvo and J.W. Ogle Publication date: 19 November 2015
Gasket for a fuel cell Applicant: NOK Corp, Japan The subject of this patent is a gasket (1) that is disposed between constituting parts (2 & 3) of a fuel cell. The gasket described is configured in such a way that it ensures consistent sealing properties, but also reduces the thickness of the fuel-cell constituting parts. In order to achieve these objectives, the gasket is provided with: an inner peripheral seal section (11), comprising seal ridges (11a & 11b). These are provided on both sides of the inner peripheral seal section, in the direction of its thickness and come into close contact with the fuel-cell constituting parts. An outer peripheral support
October 2016
Radial seal with contacting and non-contacting portions Applicant: Aktiebolaget SKF, Sweden This invention concerns a seal unit for enclosing a radial gap between coaxial, inner and outer mem-
Patent WO/2015/174235 provides details of a gasket (1) that is disposed between constituting parts (2 & 3) of a fuel cell. The lower illustration shows this gasket interposed in a suitable compressed state between the separators 2 and 3 of the fuel-cell component, the inner periphery sealing portion (11) and a sealing protrusion (11a).
section (12) is located on the outer peripheral side of the inner peripheral seal section (11), including support ridges (12a & 12b) that are provided on both sides of the outer peripheral support section (12), in the direction of its thickness, and which come into close contact with the fuel-cell constituting parts. An intermediate section (13) connects the inner peripheral seal section (11) and the outer peripheral support section (12). Patent number: WO/2015/174235 Inventor: T. Horimoto Publication date: 19 November 2015
Rotary seal that uses mixed ferrofluid Applicant: Ferrotec (USA) Corp, USA This invention relates generally to ferrofluids used in vacuum seals, but in particular to ferrofluidic seals using a plurality of ferrofluids. The associated patent covers a ferrofluid mixture for use in a ferrofluid rotary seal. It describes a first ferrofluid that has a predefined carrier liquid and a second ferrofluid, mixed with the first ferrofluid. The second ferrofluid has a predefined carrier liquid that is not identical to the predefined carrier liquid of the first ferrofluid. The first ferrofluid is at least partially miscible with (and chemically compatible with) the
The seal unit detailed by patent WO/2015/180928 is designed to enclose a radial gap between coaxial components that rotate relative to each other. The seal comprises both a contact portion, in the form of a seal lip, and a non-contact portion, in the form of a labyrinth seal. The figure above shows radial cross-sections through part of the seal unit that is described.
Sealing Technology
13