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Insulated electrically conductive fluid seal
PATENTS the valve seat into contact with at least a portion of the valve body (an end cap, for instance) and the valve member (ball) of the assembly. Such a valve seat may provide enhanced sealing between the valve member and at least a portion of the valve body by adjusting to varying tolerances in the valve assembly with the flexible arm of the valve seat, and by applying a force between the valve member and at least a portion of the valve body, to enhance contact between the valve seat and both the valve member and valve body. In some embodiments discussed the valve seat includes an annular ring formed from a metal material. This ring comprises a body portion, configured to seal against a valve member, and a flexible arm portion, configured to seal against a portion of a valve body. The body portion and the flexible arm portion are at least partially separated by a radially extending recess that is formed in the annular ring, and the flexible arm portion is configured to force at least one portion of the valve seat into contact with at least one surface of the valve. Patent number: WO/2016/007127 Inventors: R. England and D. Boles Publication date: 14 January 2016
Insulated electrically conductive fluid seal Applicant: Eaton Corp, USA This disclosure generally relates to fluid seals. More specifically, it covers insulated, electrically conductive fluid seals that are configured to stretch during installation. The embodiments described generally provide details of insulated electrically conductive fluid seals that are flexible and easy to install. These seals are more reliable because their relatively high flexibility can reduce the likelihood of cracking or tearing during installation. Alternatively, or additionally, the insulated electrically conductive fluid seal can provide multiple parallel bonding paths between two components that are be sealed and bonded. Moreover, the conductivity of the seals described can be efficiently modified in order to accommodate various seal applications. It should be understood that whilst embodiments are described with reference to an aircraft fuel delivery system, the insulated electrically conductive fluid seals may be used in any suitable fluid delivery system to provide safe transmission of electrical charges. According to the embodiments provided, the seal can include a non-conductive elastomer casing and one or more electrically conductive plugs. The one or more electrically conductive plugs are 14
Sealing Technology
disposed radially in the casing. The plugs are configured to dissipate and transmit electrical charge between two mating conductive sealing surfaces. Patent number: WO/2016/007578 Inventor: W.T. Flynn Publication date: 14 January 2016
Gasket Applicant: NOK Corp, Japan Details are provided of a sealing configuration in which air is unlikely to be trapped between a gasket and the groove bottom surface when the gasket is positioned in a mounting groove and, therefore, the “pushin” resistance during the mounting process does not increase. In addition, the gasket is not lifted from the mounting groove by spring-back action because of the trapped air. The gasket is adapted to be located in a mounting groove in one of two members facing each other and to be in close contact with the other member. A seal protrusion, which comes into contact with a side surface of the mounting groove, is provided on a side surface of the gasket so as to extend along the entire circumference of the gasket. A recess, which serves as an air vent during the mounting of the gasket (in the groove), is provided in a circumferential portion of a side surface of the gasket. This recess is formed in a shape that has a predetermined curvature in the longitudinal direction of the gasket. Patent number: WO/2016/006393 Inventors: N. Yu Publication date: 14 January 2016
Turbine engine transition seal Applicant: Siemens Aktiengesellschaft, Germany; and Siemens Energy Inc, USA A seal is described that is designed to seal a transition in a can-annular combustion system of a turbine engine to a turbine vane assembly, in order to direct exhaust gases through the turbine vane assembly. The seal may be formed from an elongated body that extends at least partially circumferentially and one or more “hot lips”, which extend axially from the elongated body. One or more “cold lips” may be coupled to the elongated body radially inwards of the hot lips and extend axially from the elongated body to form a receiving cavity between a hot and cold lip. The latter may be formed from a resilient material capable of enduring contact with an adjacent row one vane rail. In at least one embodiment, the cold lip may be formed from a different material than that used to form the elongated body and the hot lip. The
cold lip may be attached to the elongated body after manufacture, and use of the seal, such as in a retrofit of the seal. In another embodiment, the cold lip may be attached to the elongated body during the original manufacturing process of the seal. Patent number: WO/2016/010556 Inventors: S.P. Srinivasan, A. Kotwal, O. Timotin and L. Minnick Publication date: 21 January 2016
Polyurea perimeter seal for an aircraft antenna Applicant: Aviation Devices & Electronic Components Llc This patent provides details of a sealant for use on an aircraft or other vehicle. The sealant, which may be used with a gasket, is a perimeter seal that comprises a polyurea member. The latter is a self-curing, twocomponent mix, and cures to a hardness that falls within the range of about 40 to 100 (Shore A). It also maintains an adequate peel strength in order to withstand multiple thermal and pressure cycling, and has a service life, during which it may be shaped, of less than around 11 minutes. Patent number: WO/2016/011025 Inventors: J. Busby, C. Knight, K. Boomer, M. Dry and M. Boyd Publication date: 21 January 2016
Elastomer compression seal Applicant: Hauff-Technik GmbH & Co Kg, Germany This invention relates to a compression seal (1) for establishing tight closure of a passage opening through which a line passes. It comprises an elastomer body (2), a pressing plate (3a) and a clamping bolt (4) that passes through the elastomer body. The plate (3a) can be pressed onto the elastomer body (2) by means of the clamping bolt. The latter is screwed into a nut (20) about an axis of rotation (21). A segment (20a) of the nut, proximal to the elastomer body (2), sits in a hole in the pressing plate (3a) in a positively engaged and, thus, rotationally fixed manner, and a segment (20b) of the nut, distal to the elastomer body (2), has a flange that protrudes outwards beyond the hole with respect to a direction perpendicular to the axis of rotation (21), in order to form a counter bearing whilst lying against the pressing plate (3a) – as this plate (3a) is pressed onto the elastomer body. Patent number: WO/2016/008879 Inventor: S. Egritepe Publication date: 21 January 2016
November 2016
Insulated electrically conductive fluid seal Applicant: Eaton Corp, USA This disclosure generally relates to fluid seals. More specifically, it covers insulated, electrically conductive fluid seals that are configured to stretch during installation. The embodiments described generally provide details of insulated electrically conductive fluid seals that are flexible and easy to install. These seals are more reliable because their relatively high flexibility can reduce the likelihood of cracking or tearing during installation. Alternatively, or additionally, the insulated electrically conductive fluid seal can provide multiple parallel bonding paths between two components that are be sealed and bonded. Moreover, the conductivity of the seals described can be efficiently modified in order to accommodate various seal applications. It should be understood that whilst embodiments are described with reference to an aircraft fuel delivery system, the insulated electrically conductive fluid seals may be used in any suitable fluid delivery system to provide safe transmission of electrical charges. According to the embodiments provided, the seal can include a non-conductive elastomer casing and one or more electrically conductive plugs. The one or more electrically conductive plugs are 14
Sealing Technology
disposed radially in the casing. The plugs are configured to dissipate and transmit electrical charge between two mating conductive sealing surfaces. Patent number: WO/2016/007578 Inventor: W.T. Flynn Publication date: 14 January 2016
Gasket Applicant: NOK Corp, Japan Details are provided of a sealing configuration in which air is unlikely to be trapped between a gasket and the groove bottom surface when the gasket is positioned in a mounting groove and, therefore, the “pushin” resistance during the mounting process does not increase. In addition, the gasket is not lifted from the mounting groove by spring-back action because of the trapped air. The gasket is adapted to be located in a mounting groove in one of two members facing each other and to be in close contact with the other member. A seal protrusion, which comes into contact with a side surface of the mounting groove, is provided on a side surface of the gasket so as to extend along the entire circumference of the gasket. A recess, which serves as an air vent during the mounting of the gasket (in the groove), is provided in a circumferential portion of a side surface of the gasket. This recess is formed in a shape that has a predetermined curvature in the longitudinal direction of the gasket. Patent number: WO/2016/006393 Inventors: N. Yu Publication date: 14 January 2016
Turbine engine transition seal Applicant: Siemens Aktiengesellschaft, Germany; and Siemens Energy Inc, USA A seal is described that is designed to seal a transition in a can-annular combustion system of a turbine engine to a turbine vane assembly, in order to direct exhaust gases through the turbine vane assembly. The seal may be formed from an elongated body that extends at least partially circumferentially and one or more “hot lips”, which extend axially from the elongated body. One or more “cold lips” may be coupled to the elongated body radially inwards of the hot lips and extend axially from the elongated body to form a receiving cavity between a hot and cold lip. The latter may be formed from a resilient material capable of enduring contact with an adjacent row one vane rail. In at least one embodiment, the cold lip may be formed from a different material than that used to form the elongated body and the hot lip. The
cold lip may be attached to the elongated body after manufacture, and use of the seal, such as in a retrofit of the seal. In another embodiment, the cold lip may be attached to the elongated body during the original manufacturing process of the seal. Patent number: WO/2016/010556 Inventors: S.P. Srinivasan, A. Kotwal, O. Timotin and L. Minnick Publication date: 21 January 2016
Polyurea perimeter seal for an aircraft antenna Applicant: Aviation Devices & Electronic Components Llc This patent provides details of a sealant for use on an aircraft or other vehicle. The sealant, which may be used with a gasket, is a perimeter seal that comprises a polyurea member. The latter is a self-curing, twocomponent mix, and cures to a hardness that falls within the range of about 40 to 100 (Shore A). It also maintains an adequate peel strength in order to withstand multiple thermal and pressure cycling, and has a service life, during which it may be shaped, of less than around 11 minutes. Patent number: WO/2016/011025 Inventors: J. Busby, C. Knight, K. Boomer, M. Dry and M. Boyd Publication date: 21 January 2016
Elastomer compression seal Applicant: Hauff-Technik GmbH & Co Kg, Germany This invention relates to a compression seal (1) for establishing tight closure of a passage opening through which a line passes. It comprises an elastomer body (2), a pressing plate (3a) and a clamping bolt (4) that passes through the elastomer body. The plate (3a) can be pressed onto the elastomer body (2) by means of the clamping bolt. The latter is screwed into a nut (20) about an axis of rotation (21). A segment (20a) of the nut, proximal to the elastomer body (2), sits in a hole in the pressing plate (3a) in a positively engaged and, thus, rotationally fixed manner, and a segment (20b) of the nut, distal to the elastomer body (2), has a flange that protrudes outwards beyond the hole with respect to a direction perpendicular to the axis of rotation (21), in order to form a counter bearing whilst lying against the pressing plate (3a) – as this plate (3a) is pressed onto the elastomer body. Patent number: WO/2016/008879 Inventor: S. Egritepe Publication date: 21 January 2016
November 2016