Patents by Inventor Hans-Detlef Leppert
Hans-Detlef Leppert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6976498Abstract: A method of installing a cable or conduit into at least one plastic pipe of a fluid carrying pipeline system, comprises attaching a first saddle fitting at a first location on said plastic pipe by electro-fusion, opening the pipe at the first location, introducing the cable or a pull body through the saddle fitting into the pipe towards a second location or retrieving at least part of the cable or a pull body introduced at a second location, and pulling the cable directly or by means of the pull body through the pipe. This allows installation of a cable without turning off the fluid supply.Type: GrantFiled: November 12, 2003Date of Patent: December 20, 2005Assignee: AlcatelInventors: Hans-Detlef Leppert, Klaus Nothofer
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Patent number: 6889712Abstract: For the purpose of repairing supply lines such as a waste-water pipe, a plastic hose has been developed which, in the clear state, has a diameter which is the same size as, or larger than, the diameter of the pipe in which it is to be inserted. This plastic hose is used to fix optical or electric cables against the inner wall of the pipe. For this purpose, the plastic hose is introduced into the waste-water pipe in a collapsed state, together with the cable, and is released when the desired positioning has been reached. The collapsed plastic hose will then regain its original shape and thereby fix the cable against the inner wall of the waste-water pipe.Type: GrantFiled: June 27, 2002Date of Patent: May 10, 2005Assignee: AlcatelInventors: Klaus Nothofer, Hans-Detlef Leppert, Wolfgang Teschner
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Publication number: 20040264831Abstract: An optical fiber sensor cable for detecting fluids comprises a PCS fiber passing through a housing made of rigid material for increasing the mechanical stability of the PCS fiber, wherein the housing is provided with at least one aperture allowing fluid to pass through the housing and to diffuse into the plastic cladding of the PCS fiber, causing a local attenuation of light transmitted by the PCS fiber which is indicative of the presence of fluid. Such an optical fiber sensor cable may be used in harsh environments in particular for the detection of liquids containing carbon hydroxyl groups.Type: ApplicationFiled: June 8, 2004Publication date: December 30, 2004Applicant: ALCATELInventor: Hans-Detlef Leppert
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Patent number: 6811356Abstract: A cable for laying in plastic tubes for transporting gas or water is described that comprises a cable core assembly and a plastic sheath surrounding the cable core assembly, in which cable the plastic used for the plastic tube and the plastic for the sheath can be welded together.Type: GrantFiled: November 1, 2002Date of Patent: November 2, 2004Assignee: AlcatelInventors: Klaus Nothofer, Hans-Detlef Leppert
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Patent number: 6796743Abstract: For the purpose of fastening cables to the inner wall of a non-accessible waste-water pipe, an internal liner has been developed, which is constructed from at least two layers, the first layer, which rests against the internal wall of the pipe when in the laid condition, having a profile or empty spaces for receiving cables, and a second layer, of envelope-like type, which carries the first layer.Type: GrantFiled: June 26, 2002Date of Patent: September 28, 2004Assignee: AlcatelInventors: Klaus Nothofer, Hans-Detlef Leppert, Wolfgang Teschner
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Publication number: 20040170370Abstract: Sealing device for sealing a cable against a pipe or pipe branch characterized in that the sealing device comprises a tubular body which is connectable to a cable by electro-fusion at one side and which is attachable to a pipe or pipe branch at the opposite side.Type: ApplicationFiled: October 16, 2003Publication date: September 2, 2004Applicant: ALCATELInventor: Hans-Detlef Leppert
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Publication number: 20040118454Abstract: A method of installing a cable or conduit into at least one plastic pipe of a fluid carrying pipeline system, comprises attaching a first saddle fitting at a first location on said plastic pipe by electro-fusion, opening the pipe at the first location, introducing the cable or a pull body through the saddle fitting into the pipe towards a second location or retrieving at least part of the cable or a pull body introduced at a second location, and pulling the cable directly or by means of the pull body through the pipe. This allows installation of a cable without turning off the fluid supply.Type: ApplicationFiled: November 12, 2003Publication date: June 24, 2004Applicant: ALCATELInventors: Hans-Detlef Leppert, Klaus Nothofer
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Publication number: 20040099015Abstract: In a method of fabricating an optical fiber comprising a silica-based glassy material deuterium is injected in a fiber drawing device. Defect centers generated during the fiber drawing are occupied by deuterium atoms.Type: ApplicationFiled: November 13, 2003Publication date: May 27, 2004Applicant: ALCATELInventor: Hans-Detlef Leppert
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Patent number: 6588982Abstract: In a method of laying a cable, or a pipe for the subsequent introduction of a cable, in a fresh-water conduit, the surface of the cable or pipe is cleaned during the laying process immediately before entering the fresh-water conduit.Type: GrantFiled: January 30, 2002Date of Patent: July 8, 2003Assignee: AlcatelInventors: Klaus Nothofer, Hans-Detlef Leppert, Hans-Jürgen Lysson, Wolfgang Teschner
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Publication number: 20030084950Abstract: A cable for laying in plastic tubes for transporting gas or water is described that comprises a cable core assembly and a plastic sheath surrounding the cable core assembly, in which cable the plastic used for the plastic tube and the plastic for the sheath can be welded together.Type: ApplicationFiled: November 1, 2002Publication date: May 8, 2003Applicant: ALCATELInventors: Klaus Nothofer, Hans-Detlef Leppert
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Publication number: 20030002923Abstract: For the purpose of fastening cables to the inner wall of a non-accessible waste-water pipe, an internal liner has been developed, which is constructed from at least two layers, the first layer, which rests against the internal wall of the pipe when in the laid condition, having a profile or empty spaces for receiving cables, and a second layer, of envelope-like type, which carries the first layer.Type: ApplicationFiled: June 26, 2002Publication date: January 2, 2003Applicant: ALCATELInventors: Klaus Nothofer, Hans-Detlef Leppert, Wolfgang Teschner
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Publication number: 20030000727Abstract: For the purpose of laying telecommunications cable in a pipe a cable or length of cable has been developed which is formed from a spiral spring which has a diameter equal to or larger than the diameter of the pipe and a stiffness and possibly a spring force sufficiently strong for it to be pressed against the inner wall of the pipe in the installed state and thus maintaining a lasting laid state.Type: ApplicationFiled: June 26, 2002Publication date: January 2, 2003Applicant: ALCATELInventors: Klaus Nothofer, Hans-Detlef Leppert
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Publication number: 20030000591Abstract: For the purpose of repairing supply lines such as a wastewater pipe, a plastic hose has been developed which, in the clear state, has a diameter which is the same size as, or larger than, the diameter of the pipe in which it is to be inserted. This plastic hose is used to fix optical or electric cables against the inner wall of the pipe. For this purpose, the plastic hose is introduced into the waste-water pipe in a collapsed state, together with the cable, and is released when the desired positioning has been reached. The collapsed plastic hose will then regain its original shape and thereby fix the cable against the inner wall of the waste-water pipe.Type: ApplicationFiled: June 27, 2002Publication date: January 2, 2003Applicant: ALCATELInventors: Klaus Nothofer, Hans-Detlef Leppert, Wolfgang Teschner
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Publication number: 20020118932Abstract: The invention relates to a method of installing cables, in particular glass-fiber cables, in drinking water pipes and also to a cable suitable for drinking water pipe installation. In order to avoid contamination of the cable and to exclude contamination of the drinking water, provision is made that the cable is covered with a protective sheathing that is stripped off prior to contact with the drinking water. A cable suitable for this purpose can be covered already during its production process with the strippable protective sheathing.Type: ApplicationFiled: February 22, 2002Publication date: August 29, 2002Applicant: ALCATELInventors: Klaus Nothofer, Hans-Detlef Leppert, Hans-Jurgen Lysson, Wolfgang Teschner
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Publication number: 20020106248Abstract: In a method of laying a cable, or a pipe for the subsequent introduction of a cable, in a fresh-water conduit, the surface of the cable or pipe is cleaned during the laying process immediately before entering the fresh-water conduit.Type: ApplicationFiled: January 30, 2002Publication date: August 8, 2002Applicant: ALCATELInventors: Klaus Nothofer, Hans-Detlef Leppert, Hans-Jurgen Lysson, Wolfgang Teschner
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Publication number: 20020088906Abstract: The invention relates to a cable holding means within a pipe (1) having at least one holding element, which is secured on the inside wall (2) of the pipe (1), and at least one clamping element (4), which is secured on the holding element for the purpose of receiving the cable (5) or the cable bundle. In order for the cable or cable bundle to be held simply and reliably even when the course of the cable is highly curved, it is provided for the clamping element (4) to be secured on the holding element such that it is rotatable about a radial axis of the pipe (1).Type: ApplicationFiled: January 8, 2002Publication date: July 11, 2002Applicant: ALCATELInventors: Klaus Nothofer, Hans-Detlef Leppert, Hans-Jurgen Lysson, Wolfgang Teschner
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Patent number: 5672079Abstract: A coaxial connector (1) is adapted for use with a coaxial high frequency cable having an external conductor which concentrically surrounds and is spaced from a tube-shaped internal conductor with at least one optical wave guiding element therein. The coaxial connector has an internal contact part (5), which can be electrically connected with the internal conductor of the high frequency cable, and is positioned concentric with a longitudinal axis of the connector. A plug-in element (15), which is electrically connected to the internal contact part (5), is angled with respect to the longitudinal axis of the connector. The plug-in element (15) is surrounded by a ferrule terminal (21), with a space between them, which can be electrically connected to the external conductor of the high frequency cable.Type: GrantFiled: September 26, 1995Date of Patent: September 30, 1997Assignee: Alcatel Kabel AG & Co.Inventors: Hans-Detlef Leppert, Karl Schulze-Buxloh
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Patent number: 5588997Abstract: A device for coating an optical fiber, for example a glass fiber drawn from a glass preform, comprises a housing (3) with a lengthwise bore (11), into which a nozzle holder (13) containing a receiving aperture (25) is press-fit. An inlet nozzle (33) and an outlet nozzle (43), through which the optical fiber (1) can pass, are press-fit into the receiving hole (25) of nozzle holder (13) at a distance from each other. A coating space for applying a coating material to the optical fiber (1) is located between the inlet nozzle (33) and the outlet nozzle (43). The press-fitting of the nozzles (33, 43) into the nozzle holder (13), and press-fitting the nozzle holder (13) into the housing, achieves better reproducibility of the nozzle (33, 43) positioning when the device is being assembled.Type: GrantFiled: November 17, 1994Date of Patent: December 31, 1996Assignee: Kabel Rheydt AGInventors: Hans-Jurgen Lysson, Reiner Broden, Hans-Detlef Leppert
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Patent number: 5545246Abstract: A method for manufacturing an optical fiber (11), wherein the fiber (11) is drawn from one end of a preform (9) which is heated to above the glass softening temperature. The preform (9) is surronded by a protective gas (14) whose flow direction corresponds to the fiber drawing direction. The flow of the gas surrounding the preform (9) in the drawing area (10) is stabilized by an additional flushing gas (16).Type: GrantFiled: November 8, 1994Date of Patent: August 13, 1996Assignee: Kabel Rheydt AktiengesellschaftInventors: Hans-J urgen Lysson, Frank Lisse, Manuela Hahn, Hans-Detlef Leppert, Philippe Darbon