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Sealing collar
PATENTS System for fitting motor vehicle door seals Applicant: Grohmann Engineering GmbH, Germany A system for automatically fitting door seals in motor vehicles is detailed by this patent. The Ãi>ÊqÊvÀÊÌ
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iÃÛiÊÃÕÀv>ViÊqÊÃÊ placed along the door size and pressed into place. The automated process of ‘‘placing and «ÀiÃÃ}½½ÊÃÊV>ÀÀi`ÊÕÌÊLÞÊ>ÊÃÞÃÌiÊÌ
>ÌÊ>««iÃÊ self-adhesive seals. Patent number:Ê7"ÉÓ䣣ɣΣxnÎ Inventors: K. Grohmann >`Ê °Ê/
ià Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Seal support system for a pressure-tracking valve Applicant: AES Engineering Ltd, UK This invention concerns a seal support system for a tracking valve that maintains the pressure of a fluid relative to that of a process fluid. The purpose of this valve is to maintain the buffer or barrier fluid pressure of a dual mechanical seal arrangement at a suitable differential, as the pressure in the pump varies. Patent number:Ê7"ÉÓ䣣ɣΣxÓ Inventors:Ê °°Ê >À`Þ]Ê-° °Ê- >Ü >`Ê°°Ê-ÌiÞ Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Mechanical seal for a large pump Applicant: Flowserve Management Co, USA A mechanical seal assembly has been developed for hydro-transportation applications and other similar uses, such as large highpressure slurry pumps. This mechanical seal is ÕÃi`ÊÊ>À}iÃV>iÊ«Õ«ÃÊÌ >ÌÊ >ÛiÊ>Ê>Ý>ÞÊ >`ÕÃÌ>LiÊà >vÌÊÌÊ>VV`>ÌiÊ>Ê } ÊÀ>ÌiÊ of wear and maintain suitable pump performance. The cartridge seal includes a stationary adapter that is mounted on the pump casing and has a static gasket in contact with a movable gland which supports stationary seal rings. ,Ì>ÀÞÊÃi>ÊÀ}ÃÊ>ÀiÊÃÕ««ÀÌi`ÊÊÌ iÊà >vÌ°Ê These rotating and stationary seal components >ÀiÊÛ>LiÊ>Ý>ÞÊÜÌ ÊÌ iÊà >vÌÊÊÀ`iÀÊÌÊ improve pump performance under high-wear conditions. The gland and non-rotatable seal rings are supported on, and move with, a bearing housing, along with the shaft and its seal rings. Patent number:Ê7"ÉÓ䣣ɣÎÎÈxÈ Inventor:Ê°°Ê Ì Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣 14
Sealing Technology
Slide ring seal Applicant: Carl Freudenberg Kg, Germany These patents describe a mechanical seal design that is intended to function reliably at varying sliding speeds, pressures and temperatures. The seal is designed to operate at speeds up to ÓääÊÉÃ]Ê>`ÊV>ÊLiÊÕÃi`ÊÊ>««V>ÌÃÊÌ >ÌÊ include compressors and gas turbines. The patents detail the design of the seal ring geometry and clamping arrangements required to accommodate thermal and pressure distortions. Patent numbers:Ê7"ÉÓ䣣ɣΣÎÓ]Ê 7"ÉÓ䣣ɣΣÎÓn]Ê7"ÉÓ䣣ɣΣÎÓÈÊ>`Ê 7"ÉÓ䣣ɣΣÎÓÇ Inventors:Ê °Ê ÀV v]Ê°Ê >Ý>`iÀ] °Ê i`iÀiÀÊ>`Ê/°Ê iiÀ Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Multi-laminate hermetic barriers and related structures Applicant: Corning Inc, USA A method has been developed for hermetically sealing sensitive components without using chemical vapour deposition or physical vapour deposition techniques. The inorganic, thin film may V«ÀÃiÊiÊÀÊÀiÊÝ`iÃÊÀÊÌÀ`iÃ]ÊVÕ`ing various glass compositions, while the carrier films and gasket member may be composed of viÝLiÊ«ÞiÀVÊ>ÌiÀ>Ã]ÊÃÕV Ê>ÃÊ«Þ`iÌ ÞÃÝ>iÊ* -®]Ê«ÞiÌ Þii>« Ì >>ÌiÊ (PEN) or polyethylene terephthalate (PET). Patent number:Ê7"ÉÓ䣣ɣÎÎÎÇÎ Inventors:Ê6°°Ê `Ü>À`Ã]Ê ° °ÊÀÕÝ] -° °Ê Û>]Ê °°Ê+ÕiÃ>`> >`Ê7°°Ê7>Vâ> Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Sealing collar Applicant: Delphi Technologies Inc, USA This invention concerns a sealing collar for closing off cross drillings in a hub. It consists of a sealing band restrained by what the technical i`ÌÀÊÜÕ`ÊV>Ê>ÊÕLiiÊV«]ÊÀÊÀiÊVÀÀiVÌly a hose clip. However, it incorporates a novel vi>ÌÕÀiÊqÊV>ÜÃ]ÊÜ V Ê}À«ÊÌ iÊ ÕL° Patent number:Ê7"ÉÓ䣣ɣΣ{n Inventors: P. David, A. Carriere and P. Kimus Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Cylinder-head seal rings Applicant: Bayerische Motoren Werke Aktiengesellschaft, Germany This patent describes the use of individual metal seal rings to seal each port between a cylinder
i>`Ê>`ÊiÝ >ÕÃÌÊ>v`°Ê iÌ>Ê6Ê>`Ê ÊÀ}ÃÊ are illustrated. The purpose is to avoid the compliV>ÌÃÊ>ÃÃV>Ìi`ÊÜÌ Ê>ÊÌÞ«V>ÊiÝ >ÕÃÌÊ>v`Ê gasket, provide greater freedom for positioning manifold studs and reduce material content. Patent number:Ê7"ÉÓ䣣ɣΣÓnn Inventors: M. Kauffmann and A. Kobor Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Polymer composition Applicant: DSM IP Assets Bv, The Netherlands The polymer composition detailed by this patent contains a thermoplastic copolyester elasÌiÀÆÊ>Ê«>ÃÌiÀÆÊ>`Ê>Ê«ÞivÊ«ÞiÀ]Ê grafted with an ethylenically unsaturated compound, functionalised with a functional group. Patent number:Ê7"ÉÓ䣣ɣΣÈÓ{ Inventors: W.G.M. Bruls, °° °Ê ÕÃV Ê«Ê i]Ê °°Ê >`Ê °°°7°Ê7iâi Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Apparatus and method for sealing portions of a borehole Applicant: Baker Hughes Inc, USA An apparatus for controlling fluid flow in a borehole in an earth formation is described. It includes a carrier configured to be deployed in the borehole and a shape-memory device disposed in the carrier. The device contains a shape-memory polymer, the glass transition temperature of which can be modified to a temperature that is lower than that of the borehole in response to a trigger, and changes from a glass state to a rubber state in response to the borehole temperature, in order to prevent fluid flowing through the shape memory device. As a result of this transition the shape-memory >ÌiÀ>ÊV >}iÃÊà >«iÊ>`ÉÀÊÌ iÊ«ÀiÃÊÜÌ Ê the material collapse to prevent fluid flowing through its structure. This seals off a selected «ÀÌÊvÊÌ iÊLÀi iÊ>`ÉÀÊLÀi iÊVponent. In one embodiment of this invention this change in state causes the shape-memory material to revert from a deformed shape into a ¼¼ÀiiLiÀi`½½Êà >«iÊÃÕV Ê>ÃÊ>Ê«>ViÀÊÀÊ«Õ}Ê shape) to seal off at least a portion of the borehole and prevent the passage of an undesired fluid. In another embodiment, the material described has a plurality of pores that collapse because of the change in state. This also prevents fluid from flowing through the structure. In yet another embodiment the trigger involves the introduction of an undesired fluid, such as water or hydrogen sulphide gas, into the borehole. The trigger may also include a change in the chemistry of the down-hole fluid or a magnetic or electro-conductive trigger. The appara-
April 2012
Seal support system for a pressure-tracking valve Applicant: AES Engineering Ltd, UK This invention concerns a seal support system for a tracking valve that maintains the pressure of a fluid relative to that of a process fluid. The purpose of this valve is to maintain the buffer or barrier fluid pressure of a dual mechanical seal arrangement at a suitable differential, as the pressure in the pump varies. Patent number:Ê7"ÉÓ䣣ɣΣxÓ Inventors:Ê °°Ê >À`Þ]Ê-° °Ê- >Ü >`Ê°°Ê-ÌiÞ Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Mechanical seal for a large pump Applicant: Flowserve Management Co, USA A mechanical seal assembly has been developed for hydro-transportation applications and other similar uses, such as large highpressure slurry pumps. This mechanical seal is ÕÃi`ÊÊ>À}iÃV>iÊ«Õ«ÃÊÌ >ÌÊ >ÛiÊ>Ê>Ý>ÞÊ >`ÕÃÌ>LiÊà >vÌÊÌÊ>VV`>ÌiÊ>Ê } ÊÀ>ÌiÊ of wear and maintain suitable pump performance. The cartridge seal includes a stationary adapter that is mounted on the pump casing and has a static gasket in contact with a movable gland which supports stationary seal rings. ,Ì>ÀÞÊÃi>ÊÀ}ÃÊ>ÀiÊÃÕ««ÀÌi`ÊÊÌ iÊà >vÌ°Ê These rotating and stationary seal components >ÀiÊÛ>LiÊ>Ý>ÞÊÜÌ ÊÌ iÊà >vÌÊÊÀ`iÀÊÌÊ improve pump performance under high-wear conditions. The gland and non-rotatable seal rings are supported on, and move with, a bearing housing, along with the shaft and its seal rings. Patent number:Ê7"ÉÓ䣣ɣÎÎÈxÈ Inventor:Ê°°Ê Ì Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣 14
Sealing Technology
Slide ring seal Applicant: Carl Freudenberg Kg, Germany These patents describe a mechanical seal design that is intended to function reliably at varying sliding speeds, pressures and temperatures. The seal is designed to operate at speeds up to ÓääÊÉÃ]Ê>`ÊV>ÊLiÊÕÃi`ÊÊ>««V>ÌÃÊÌ >ÌÊ include compressors and gas turbines. The patents detail the design of the seal ring geometry and clamping arrangements required to accommodate thermal and pressure distortions. Patent numbers:Ê7"ÉÓ䣣ɣΣÎÓ]Ê 7"ÉÓ䣣ɣΣÎÓn]Ê7"ÉÓ䣣ɣΣÎÓÈÊ>`Ê 7"ÉÓ䣣ɣΣÎÓÇ Inventors:Ê °Ê ÀV v]Ê°Ê >Ý>`iÀ] °Ê i`iÀiÀÊ>`Ê/°Ê iiÀ Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Multi-laminate hermetic barriers and related structures Applicant: Corning Inc, USA A method has been developed for hermetically sealing sensitive components without using chemical vapour deposition or physical vapour deposition techniques. The inorganic, thin film may V«ÀÃiÊiÊÀÊÀiÊÝ`iÃÊÀÊÌÀ`iÃ]ÊVÕ`ing various glass compositions, while the carrier films and gasket member may be composed of viÝLiÊ«ÞiÀVÊ>ÌiÀ>Ã]ÊÃÕV Ê>ÃÊ«Þ`iÌ ÞÃÝ>iÊ* -®]Ê«ÞiÌ Þii>« Ì >>ÌiÊ (PEN) or polyethylene terephthalate (PET). Patent number:Ê7"ÉÓ䣣ɣÎÎÎÇÎ Inventors:Ê6°°Ê `Ü>À`Ã]Ê ° °ÊÀÕÝ] -° °Ê Û>]Ê °°Ê+ÕiÃ>`> >`Ê7°°Ê7>Vâ> Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Sealing collar Applicant: Delphi Technologies Inc, USA This invention concerns a sealing collar for closing off cross drillings in a hub. It consists of a sealing band restrained by what the technical i`ÌÀÊÜÕ`ÊV>Ê>ÊÕLiiÊV«]ÊÀÊÀiÊVÀÀiVÌly a hose clip. However, it incorporates a novel vi>ÌÕÀiÊqÊV>ÜÃ]ÊÜ V Ê}À«ÊÌ iÊ ÕL° Patent number:Ê7"ÉÓ䣣ɣΣ{n Inventors: P. David, A. Carriere and P. Kimus Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Cylinder-head seal rings Applicant: Bayerische Motoren Werke Aktiengesellschaft, Germany This patent describes the use of individual metal seal rings to seal each port between a cylinder
i>`Ê>`ÊiÝ >ÕÃÌÊ>v`°Ê iÌ>Ê6Ê>`Ê ÊÀ}ÃÊ are illustrated. The purpose is to avoid the compliV>ÌÃÊ>ÃÃV>Ìi`ÊÜÌ Ê>ÊÌÞ«V>ÊiÝ >ÕÃÌÊ>v`Ê gasket, provide greater freedom for positioning manifold studs and reduce material content. Patent number:Ê7"ÉÓ䣣ɣΣÓnn Inventors: M. Kauffmann and A. Kobor Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Polymer composition Applicant: DSM IP Assets Bv, The Netherlands The polymer composition detailed by this patent contains a thermoplastic copolyester elasÌiÀÆÊ>Ê«>ÃÌiÀÆÊ>`Ê>Ê«ÞivÊ«ÞiÀ]Ê grafted with an ethylenically unsaturated compound, functionalised with a functional group. Patent number:Ê7"ÉÓ䣣ɣΣÈÓ{ Inventors: W.G.M. Bruls, °° °Ê ÕÃV Ê«Ê i]Ê °°Ê >`Ê °°°7°Ê7iâi Publication date:ÊÓÇÊ"VÌLiÀÊÓ䣣
Apparatus and method for sealing portions of a borehole Applicant: Baker Hughes Inc, USA An apparatus for controlling fluid flow in a borehole in an earth formation is described. It includes a carrier configured to be deployed in the borehole and a shape-memory device disposed in the carrier. The device contains a shape-memory polymer, the glass transition temperature of which can be modified to a temperature that is lower than that of the borehole in response to a trigger, and changes from a glass state to a rubber state in response to the borehole temperature, in order to prevent fluid flowing through the shape memory device. As a result of this transition the shape-memory >ÌiÀ>ÊV >}iÃÊà >«iÊ>`ÉÀÊÌ iÊ«ÀiÃÊÜÌ Ê the material collapse to prevent fluid flowing through its structure. This seals off a selected «ÀÌÊvÊÌ iÊLÀi iÊ>`ÉÀÊLÀi iÊVponent. In one embodiment of this invention this change in state causes the shape-memory material to revert from a deformed shape into a ¼¼ÀiiLiÀi`½½Êà >«iÊÃÕV Ê>ÃÊ>Ê«>ViÀÊÀÊ«Õ}Ê shape) to seal off at least a portion of the borehole and prevent the passage of an undesired fluid. In another embodiment, the material described has a plurality of pores that collapse because of the change in state. This also prevents fluid from flowing through the structure. In yet another embodiment the trigger involves the introduction of an undesired fluid, such as water or hydrogen sulphide gas, into the borehole. The trigger may also include a change in the chemistry of the down-hole fluid or a magnetic or electro-conductive trigger. The appara-
April 2012