Patents Assigned to Georg Fischer Rohrleitungssysteme AG
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Patent number: 9529368Abstract: A pressure-reducing valve for fluid and gaseous media, more particularly for regulating the pressure in pipeline systems, preferably in buildings, containing a housing preferably consisting of at least one upper and lower part, an interior housing wherein the interior housing has a poppet bore, a diaphragm for dividing the housing into a fluid-free and fluid-flowing area, a pressure adjustment unit, wherein the pressure adjustment unit comprises a spindle, a spring valve, a spring holder and at least one spring, a fastening means and a poppet, wherein the poppet and the diaphragm are connected to one another by fastening means, wherein the poppet is disposed in the poppet bore and at least one sealing element is arranged between the poppet and poppet bore for sealing action, wherein the poppet is formed in one piece and the sealing element is disposed integrally on the poppet or integrally on the interior housing.Type: GrantFiled: August 25, 2014Date of Patent: December 27, 2016Assignee: Georg Fischer Rohrleitungssysteme AGInventor: Timo Jäckle
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Patent number: 9518678Abstract: An electrical feedback device (6) of a valve (1) is provided for feeding back the position of a hand wheel (4) of the valve (1) and thus the position of a shut-off member of the valve (1). The electrical feedback device (6) can be mounted in a spindle housing (13) of a housing upper part (2) of the valve (1). The electrical feedback device is configured so that the rotational movement of the hand wheel (4) is converted into a linear movement of a trip cam (45). The electrical feedback device (6) has a gearwheel (43) which is driven by a screw thread (42) which is mounted on a ring (41).Type: GrantFiled: October 17, 2014Date of Patent: December 13, 2016Assignee: Georg Fischer Rohrleitungssysteme AGInventors: Stefan Bürgi, Jürgen Stumpp
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Patent number: 9255641Abstract: A saddle, in particular a clamping saddle for plastic pipes, containing a branch projection, a saddle piece, center axes (X), (Y) and (Z), and a groove for the arrangement of a seal, wherein the inner cheek of the groove is arranged, throughout the course of the groove, perpendicular to the inner surface of the saddle piece.Type: GrantFiled: July 18, 2014Date of Patent: February 9, 2016Assignee: Georg Fischer Rohrleitungssysteme AGInventors: Moritz Raible, Wolfgang Paul, Juergen Roesch, Joerg Wermelinger
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Patent number: 9062789Abstract: An actuating device (4) for actuating valves, having a spindle (5), wherein the actuating device is designed as a hand wheel (4) with a locking element (32) and with an electric feedback device (6), characterized in that the locking element (32) is formed in one piece and is arranged integrally in the hand wheel (4).Type: GrantFiled: June 8, 2010Date of Patent: June 23, 2015Assignee: Georg Fischer Rohrleitungssysteme AGInventors: Stefan Buergi, Juergen Stumpp
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Publication number: 20150034186Abstract: An actuating device (4) for actuating valves, having a spindle (5), wherein the actuating device is designed as a hand wheel (4) with a locking element (32) and with an electric feedback device (6), characterized in that the locking element (32) is formed in one piece and is arranged integrally in the hand wheel (4).Type: ApplicationFiled: October 17, 2014Publication date: February 5, 2015Applicant: Georg Fischer Rohrleitungssysteme AGInventors: Stefan Bürgi, Jürgen Stumpp
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Patent number: 8859670Abstract: A polyolefin composition having an increased modulus of elasticity as well as increased heat resistance, wherein the polymer composition has high melt viscosity, and wherein the composition contains a carbon material as a filler, wherein the filler is present in the form of a carbon nanofiber.Type: GrantFiled: May 20, 2010Date of Patent: October 14, 2014Assignee: Georg Fischer Rohrleitungssysteme AGInventors: Stephan Schuessler, Michaela Lendl, Bernd Kretzschmar
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Patent number: 8672599Abstract: A securing element (26) for securing against the loosening by rotation of at least two screwable housing parts (3,2), the securing element (26) being arranged so as to be clamped in one of the housing parts (3) and interact with the other housing part (2).Type: GrantFiled: June 8, 2010Date of Patent: March 18, 2014Assignee: Georg Fischer Rohrleitungssysteme AGInventors: Joerg Hunnekuhl, Juergen Stumpp
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Publication number: 20140020774Abstract: A check valve (1) comprising a valve housing (2) in which a one-piece closing element (3) is present, which is arranged such that same can be displaced by the flow medium and contacts a profile seal (5) of a sealing section (7) in the closed position, wherein the closing element is guided by a bearing (10), wherein the bearing is disposed concentrically in the valve housing by ribs (11), wherein the closing element comprises a zone A (34) in which the outer contour comprises a flow-optimized shape and a zone B (35) in which the outer contour comprises a domed shape, and the zones A and B are disposed one after the other and transition smoothly into each other.Type: ApplicationFiled: December 14, 2011Publication date: January 23, 2014Applicant: Georg Fischer Rohrleitungssysteme AGInventors: Juergen Miklo, Markus Roost, Riccardo Barbone
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Publication number: 20140020811Abstract: A fitting (1) of weldable, thermoplastic material of a modular structure, comprising a number of elements (2, 3, 9, 10, 11, 12), at least one main element (2, 9) and at least one connecting element (3, 10, 11, 12), characterized in that the elements (2, 3, 9, 10, 11, 12) have end faces (4, 5) at right angles to the centre axis (8), and the elements (2, 3, 9, 10, 11, 12) are welded to one another exclusively at the end faces (4, 5).Type: ApplicationFiled: January 17, 2012Publication date: January 23, 2014Applicant: GEORG FISCHER ROHRLEITUNGSSYSTEME AGInventor: Joerg Wermelinger
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Patent number: 8517338Abstract: Diaphragm valve (1) comprising a housing upper part (2), which receives an actuating device (4) for actuating the valve (1), and a housing lower part (3), which has a receiving region (9) for receiving a diaphragm (11), wherein in the housing lower part (3) below the diaphragm (11) a central region forming a flow channel (17) is designed, wherein the cross-sectional surface of the flow channel (17) in the central region (51) of the housing lower part (3) is constant when the valve (1) is in the open state.Type: GrantFiled: March 11, 2010Date of Patent: August 27, 2013Assignee: Georg Fischer Rohrleitungssysteme AGInventors: Christian Hunnekuhl, Juergen Stumpp, Joerg Hunnekuhl, Walter Bannwarth
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Publication number: 20130126088Abstract: A method and a device for welding plastic pipes (1) made of thermoplastic material by a butt-welding method, wherein the pipes (1) are held in a coaxial position in relation to one another by clamping points (2), are trimmed by a trimmer (3), which can be brought between the clamping points (2), and are heated up by heated tools (6), which can be fitted in place of the trimmer (3), wherein the heating of the free pipe ends (8) to be welded has the effect of forming a melting region which forms a bead when pressing occurs, the pipe projection (5) of the pipes (1) being trimmed to a defined size.Type: ApplicationFiled: June 1, 2011Publication date: May 23, 2013Applicant: GEORG FISCHER ROHRLEITUNGSSYSTEME AGInventor: Joerg Wermelinger
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Publication number: 20130076022Abstract: Method of producing a welded pipe tee from thermoplastic, wherein the pipes to be joined together are welded along their approximating intersection curve.Type: ApplicationFiled: September 20, 2012Publication date: March 28, 2013Applicant: Georg Fischer Rohrleitungssysteme AGInventor: GEORG FISCHER ROHRLEITUNGSSYSTEME A
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Publication number: 20120111503Abstract: A heating coil welding fitting comprising a cylindrical coupling body for welding pipelines made of thermoplastics or other weldable plastics, containing at least two heating wire windings, each with a plurality of turns which are at any desired distance from one another, and contacts for feeding the electric current, wherein the heating wire winding is wavy, preferably sinusoidal, and the coupling can be deformed as a result.Type: ApplicationFiled: November 4, 2011Publication date: May 10, 2012Applicant: GEORG FISCHER ROHRLEITUNGSSYSTEME AGInventor: Joerg Wermelinger
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Publication number: 20120087763Abstract: A securing element (26) for securing against the loosening by rotation of at least two screwable housing parts (3,2), the securing element (26) being arranged so as to be clamped in one of the housing parts (3) and interact with the other housing part (2).Type: ApplicationFiled: June 8, 2010Publication date: April 12, 2012Applicant: GEORG FISCHER ROHRLEITUNGSSYSTEME AGInventors: Joerg Hunnekuhl, Juergen Stumpp
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Publication number: 20120080628Abstract: An actuating device (4) for actuating valves, having a spindle (5), wherein the actuating device is designed as a hand wheel (4) with a locking element (32) and with an electric feedback device (6), characterized in that the locking element (32) is formed in one piece and is arranged integrally in the hand wheel (4).Type: ApplicationFiled: June 8, 2010Publication date: April 5, 2012Applicant: GEORG FISCHER ROHRLEITUNGSSYSTEME AGInventors: Stefan Buergi, Juergen Stumpp
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Publication number: 20120070598Abstract: A polyolefin composition having an increased modulus of elasticity as well as increased heat resistance, wherein the polymer composition has high melt viscosity, and wherein the composition contains a carbon material as a filler, wherein the filler is present in the form of a carbon nanofiber.Type: ApplicationFiled: May 20, 2010Publication date: March 22, 2012Applicant: GEORG FISCHER ROHRLEITUNGSSYSTEME AGInventors: Stephan Schuessler, Michaela Lendl, Bernd Kretzschmar
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Publication number: 20120056120Abstract: Diaphragm valve (1) comprising a housing upper part (2), which receives an actuating device (4) for actuating the valve (1), and a housing lower part (3), which has a receiving region (9) for receiving a diaphragm (11), wherein in the housing lower part (3) below the diaphragm (11) a central region forming a flow channel (17) is designed, wherein the cross-sectional surface of the flow channel (17) in the central region (51) of the housing lower part (3) is constant when the valve (1) is in the open state.Type: ApplicationFiled: March 11, 2010Publication date: March 8, 2012Applicant: GEORG FISCHER ROHRLEITUNGSSYSTEME AGInventors: Christian Hunnekuhl, Juergen Stumpp, Joerg Hunnekuhl, Walter Bannwarth
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Patent number: 7731153Abstract: A handle (1) for valves (4) comprising a connecting region (2) for connecting the handle (1) to a spindle (5) of the valve (4), an actuating arm (3) for actuating the valve (4), a locking lever (8) arranged resiliently in the actuating arm (3) for engaging the actuating arm (3) and a locking and guide disc (16) for locking and guiding the handle (1), the locking and guide disc (16) having a greater external diameter than the connecting region (2) and being arranged to be able to be connected to a flange region (12) of the valve (4).Type: GrantFiled: September 18, 2006Date of Patent: June 8, 2010Assignee: Georg Fischer Rohrleitungssysteme AGInventors: Jürgen Miklo, Peter Tkaczyk
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Patent number: 7708321Abstract: A pipe-connector molded part for pre-insulated pipe conduits consisting of plastic, whereby the pipe conduit is pre-insulated with polyurethane foam and the pipe-connector molded part is positioned so that it can be connected to the internal wall of the pipe conduits to be connected by a method for connecting pre-insulated pipe conduits consisting of plastic by way of the molded part.Type: GrantFiled: May 16, 2003Date of Patent: May 4, 2010Assignee: Georg Fischer Rohrleitungssysteme AGInventors: Harald Muckenschnabel, Udo Heizmann
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Publication number: 20080084059Abstract: A pipe-connection moulded part comprising an inner pipe part, an insulating layer and an outer casing of plastic, wherein the outer casing and the insulating layer are formed from the same plastic, for example polyurethane. A method of producing the pipe-connection moulded part is also proposed.Type: ApplicationFiled: October 2, 2007Publication date: April 10, 2008Applicant: GEORG FISCHER ROHRLEITUNGSSYSTEME AGInventors: Max Meier, Harald Muckenschnabel