- Email: [email protected]
Seal for the anode connection to a cable
PATENTS
Patent WO/2012/066395 provides details of a seal design that is modular in nature, which enables it to be easily adapted to specific applications.
Piston ring Applicants: Isuzu Motors Ltd and Nippon Piston Ring Co Ltd – Japan This invention addresses the problem of providing a piston ring which can reduce reciprocating dynamic friction between a piston and the inner wall of a cylinder, and can retain the effect of reducing the friction. The ring for internal combustion engines is fitted to a ring groove of the piston and slides on the cylinder liner or on the inner wall of a cylinder. The peripheral sliding surface of the piston ring includes a barrel-width region, which has a plurality of fine recesses that have been formed so that the recess-free region has an area amounting to 20–85% of the overall area of the barrelwidth region in which the recesses have not been formed. The recess-free region is present in all axial sections of the barrel-width region. Patent number: WO/2012/067084 Inventors: A. Iijima, H. Murata and M. Ito Publication date: 24 May 2012
Thermally compensated ‘‘swellable’’ packer Applicant: Halliburton Energy Services Inc, USA This disclosure relates generally to equipment used and operations performed in conjunction with a subterranean well and, in the example described, in particular provides details of a ther-
October 2012
mally compensated ‘‘swellable’’ packer. A swellable packer is typically used to seal off an annulus in a well-bore environment. Such apparatus include a material that swells when it comes into contact with a particular fluid in the well. Unfortunately, this material, and/or any additional sealing material included in a seal element of a packer, can contract when its temperature decreases significantly. For example, in stimulation operations (such as fracturing) or completion operations (such as gravel packing), a fluid at a relatively low temperature is flowed through the packer, which causes the seal element to contract – lessening the ability of the element to seal off the annulus. The aim of this patent is provide a means of compensating for changes in temperature. Patent number: WO/2012/071189 Inventor: A.K. Sevre Publication date: 31 May 2012
Seal for the anode connection to a cable Applicant/Inventor: W.R. Schutt, USA A device and method for insulating and sealing a joint that (electrically) connects a wire or ribbon anode to an electrical cable forms the subject of this patent. When wire-type and rod-type anodes are connected to the lead wire or conductor cable for an anode/anode assembly, the connection or joint must be both electrically sound and waterproof. If this joint is not waterproof, there is a risk of connection failure. Various approaches have been taken to seal the electrical joint and isolate it from the ambient surroundings. In this invention, the cable is insulated except at an open region where the wire anode is connected to it. The sealing device consists of a body of an insulating material moulded in situ around the electrical joint to completely cover it and bond to portions of the electrically insulating covering, contiguous with the joint, in order to insulate the joint and prevent the ingress of water or other materials. Patent number: WO/2012/071032 Publication date: 31 May 2012
Sealing element for a constant velocity joint Applicant: GKN Driveline Deutschland GmbH, Germany This invention relates to a sealing element for
a constant velocity (CV) joint. The sealing elements used in CV joints – particularly those that are used in propeller shafts in a motor vehicle – are subjected to extreme conditions, above all, high rotational speeds and high temperatures. Seals suffer deformation that can lead to a reduction in the service life of the seal and the CV joint. Therefore, the main objective of this invention is to propose a design for a sealing element for a CV joint which, even under extreme operational conditions, is characterised by a small amount of wear and thus by a prolonged service life. Furthermore, the aim is to propose a CV joint assembly that contains such a sealing element and has similar operational characteristics. According to the inventors, these objectives are achieved by providing an element for sealing a joint chamber of a CV joint that consists of an inner first collar, for providing a sealing connection relative to an inner joint part of the CV joint; a second collar for providing a sealing connection relative to an outer joint part of the CV joint; and a membrane portion that extends between the inner collar and the outer collar. This membrane portion is fold-free and conical in shape. Patent number: WO/2012/069628 Inventors: H. Cermak and M. Zierz Publication date: 31 May 2012
Single-line seal Applicant: Rehau Ag + Co, Germany This invention relates to a single-line seal with a sealing mass for surrounding a cable or cable duct, and a multi-part housing that at least partly encloses the sealing mass and which has an inner cross-section transverse to the cable or cable duct. This cross-section is smaller than the cross-section of the sealing mass (transverse to the cable or cable duct). The housing is held together by a connecting element. A specific characteristic of this invention is that at least two parts of the housing can be connected to each other in an articulated manner – the inner crosssection changing when the two parts pivot. The multi-part housing completely surrounds the sealing mass only under a tensile force provided by means of the connecting element. Patent number: WO/2012/069128 Inventor: T. Vohler Publication date: 31 May 2012
Sealing Technology
15
Patent WO/2012/066395 provides details of a seal design that is modular in nature, which enables it to be easily adapted to specific applications.
Piston ring Applicants: Isuzu Motors Ltd and Nippon Piston Ring Co Ltd – Japan This invention addresses the problem of providing a piston ring which can reduce reciprocating dynamic friction between a piston and the inner wall of a cylinder, and can retain the effect of reducing the friction. The ring for internal combustion engines is fitted to a ring groove of the piston and slides on the cylinder liner or on the inner wall of a cylinder. The peripheral sliding surface of the piston ring includes a barrel-width region, which has a plurality of fine recesses that have been formed so that the recess-free region has an area amounting to 20–85% of the overall area of the barrelwidth region in which the recesses have not been formed. The recess-free region is present in all axial sections of the barrel-width region. Patent number: WO/2012/067084 Inventors: A. Iijima, H. Murata and M. Ito Publication date: 24 May 2012
Thermally compensated ‘‘swellable’’ packer Applicant: Halliburton Energy Services Inc, USA This disclosure relates generally to equipment used and operations performed in conjunction with a subterranean well and, in the example described, in particular provides details of a ther-
October 2012
mally compensated ‘‘swellable’’ packer. A swellable packer is typically used to seal off an annulus in a well-bore environment. Such apparatus include a material that swells when it comes into contact with a particular fluid in the well. Unfortunately, this material, and/or any additional sealing material included in a seal element of a packer, can contract when its temperature decreases significantly. For example, in stimulation operations (such as fracturing) or completion operations (such as gravel packing), a fluid at a relatively low temperature is flowed through the packer, which causes the seal element to contract – lessening the ability of the element to seal off the annulus. The aim of this patent is provide a means of compensating for changes in temperature. Patent number: WO/2012/071189 Inventor: A.K. Sevre Publication date: 31 May 2012
Seal for the anode connection to a cable Applicant/Inventor: W.R. Schutt, USA A device and method for insulating and sealing a joint that (electrically) connects a wire or ribbon anode to an electrical cable forms the subject of this patent. When wire-type and rod-type anodes are connected to the lead wire or conductor cable for an anode/anode assembly, the connection or joint must be both electrically sound and waterproof. If this joint is not waterproof, there is a risk of connection failure. Various approaches have been taken to seal the electrical joint and isolate it from the ambient surroundings. In this invention, the cable is insulated except at an open region where the wire anode is connected to it. The sealing device consists of a body of an insulating material moulded in situ around the electrical joint to completely cover it and bond to portions of the electrically insulating covering, contiguous with the joint, in order to insulate the joint and prevent the ingress of water or other materials. Patent number: WO/2012/071032 Publication date: 31 May 2012
Sealing element for a constant velocity joint Applicant: GKN Driveline Deutschland GmbH, Germany This invention relates to a sealing element for
a constant velocity (CV) joint. The sealing elements used in CV joints – particularly those that are used in propeller shafts in a motor vehicle – are subjected to extreme conditions, above all, high rotational speeds and high temperatures. Seals suffer deformation that can lead to a reduction in the service life of the seal and the CV joint. Therefore, the main objective of this invention is to propose a design for a sealing element for a CV joint which, even under extreme operational conditions, is characterised by a small amount of wear and thus by a prolonged service life. Furthermore, the aim is to propose a CV joint assembly that contains such a sealing element and has similar operational characteristics. According to the inventors, these objectives are achieved by providing an element for sealing a joint chamber of a CV joint that consists of an inner first collar, for providing a sealing connection relative to an inner joint part of the CV joint; a second collar for providing a sealing connection relative to an outer joint part of the CV joint; and a membrane portion that extends between the inner collar and the outer collar. This membrane portion is fold-free and conical in shape. Patent number: WO/2012/069628 Inventors: H. Cermak and M. Zierz Publication date: 31 May 2012
Single-line seal Applicant: Rehau Ag + Co, Germany This invention relates to a single-line seal with a sealing mass for surrounding a cable or cable duct, and a multi-part housing that at least partly encloses the sealing mass and which has an inner cross-section transverse to the cable or cable duct. This cross-section is smaller than the cross-section of the sealing mass (transverse to the cable or cable duct). The housing is held together by a connecting element. A specific characteristic of this invention is that at least two parts of the housing can be connected to each other in an articulated manner – the inner crosssection changing when the two parts pivot. The multi-part housing completely surrounds the sealing mass only under a tensile force provided by means of the connecting element. Patent number: WO/2012/069128 Inventor: T. Vohler Publication date: 31 May 2012
Sealing Technology
15