Patents by Inventor Alfons Gail
Alfons Gail 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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Publication number: 20150198251Abstract: Brush seal and method for the production thereof, the brush seal being composed of filament bundles that lie tightly adjacent to one another and are wound in bundles around a core element (14), the free filament ends (filament region 16) being arranged at a lay angle (?) deviating from 90° relative to the core element (14), and are held permanently by means of clamping members (18, 21, 23) that partially enclose the latter.Type: ApplicationFiled: January 9, 2015Publication date: July 16, 2015Inventors: Stefan Beichl, Alfons Gail
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Patent number: 8500128Abstract: A sealing device for a coolant supply on a rotating spindle includes a first brush seal and a second brush seal arranged one after another in series on the spindle. An annular leakage chamber is formed axially between the first and second brush seals, and radially between the spindle and a spindle housing.Type: GrantFiled: July 2, 2008Date of Patent: August 6, 2013Assignee: MTU Aero Engines GmbHInventors: Alfons Gail, Stefan Beichl
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Patent number: 8235392Abstract: The invention relates to a sealing arrangement for a non-hermetic seal of a gap (11) between a stator and a rotor with a brush seal (13), wherein the brush seal (13) has a bristle package (14) with several bristles (15), the bristles are wound about a core element (16) and fixed to the core element (16), wherein the brush seal (13) is disposed at least sectionally in an accommodating space, which is bounded by a supporting element (18) and a covering element (19), and wherein the bristles (15) have sealing bristle sections (21), which are at an angle to the bristle shafts (20) and the ends of which run against a sealing surface (22) of the rotor (12). According to the invention, the covering element (19) has a support surface (23) at an end adjacent to the sealing bristle sections (21), wherein the supporting surface (23) contacts the bristle shafts (20) in a defined, locally limited region, so that the radial mobility of the sealing bristle sections (21) is limited in the direction of the rotor (12).Type: GrantFiled: October 11, 2007Date of Patent: August 7, 2012Assignee: MTU Aero Engines GmbHInventors: Alfons Gail, Wilhelm Gräbeldinger, Alexander Rauschmeier
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Patent number: 7909334Abstract: A sealing arrangement for a non-hermetic seal between a stator and a rotor includes a brush gasket having a plurality of bristles wound around a core element and affixed to the core element with a clamping element. The brush gasket is disposed at least partially in a receiving space delimited by a support element and by a cover element. The support element, the cover element, and the brush gasket are secured using at least one fitting element in at least one recess, especially in an axial groove or bore, in the stator. In addition to being positioned by using the at least one fitting element, the components may also be affixed to the stator using an attachment element.Type: GrantFiled: July 9, 2004Date of Patent: March 22, 2011Assignee: MTU Aero Engines GmbHInventors: Stefan Beichl, Christoph Cernay, Alfons Gail, Erhan Ücgül
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Publication number: 20100320696Abstract: The invention relates to a sealing arrangement for a non-hermetic seal of a gap (11) between a stator and a rotor with a brush seal (13), wherein the brush seal (13) has a bristle package (14) with several bristles (15), the bristles are wound about a core element (16) and fixed to the core element (16), wherein the brush seal (13) is disposed at least sectionally in an accommodating space, which is bounded by a supporting element (18) and a covering element (19), and wherein the bristles (15) have sealing bristle sections (21), which are at an angle to the bristle shafts (20) and the ends of which run against a sealing surface (22) of the rotor (12). According to the invention, the covering element (19) has a support surface (23) at an end adjacent to the sealing bristle sections (21), wherein the supporting surface (23) contacts the bristle shafts (20) in a defined, locally limited region, so that the radial mobility of the sealing bristle sections (21) is limited in the direction of the rotor (12).Type: ApplicationFiled: October 11, 2007Publication date: December 23, 2010Applicant: MTU AERO ENGINES GMBHInventors: Alfons Gail, Wilhelm Gräbeldinger, Alexander Rauschmeier
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Patent number: 7832734Abstract: A seal arrangement for a turbo-engine, for sealing a peripheral gap between a rotor and a stator is provided. The stator a seal holder provided with at least one groove for respectively receiving a segmented, dynamic seal. Segments of the dynamic seal are made up of a plurality of brush seal segments, and free ends of bristles of the brush seal segments extend in the radial direction project from the respective groove and lie on the rotor. The or every groove for receiving the brush-type seal segments is designed without an undercut, the brush-type seal segments being received in the respective groove without an undercut in a positive manner.Type: GrantFiled: February 8, 2006Date of Patent: November 16, 2010Assignee: MTU Aero Engines GmbHInventors: Stefan Beichl, Alfons Gail
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Publication number: 20100171270Abstract: A sealing device for a coolant supply on a rotating spindle is characterized in that a first brush seal (4) and a second brush seal (5) are arranged one after another in series on the spindle (2). Hereby the technical problems of the prior art are avoided and an improved device is made available, which makes possible a reliable sealing of the supply of coolant to a quickly rotating tool spindle, which exhibits no sudden failure, and which nonetheless is cost-advantageous in production and installation.Type: ApplicationFiled: July 2, 2008Publication date: July 8, 2010Applicant: MTU AERO ENGINES GMBHInventors: Alfons Gail, Stefan Beichl
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Patent number: 7644928Abstract: A brush seal has a bristle housing formed by a cover element and a support element. A plurality of bristles, which are wound around a core element and secured to the core element by a clamping element are positioned in the bristle housing. At least one of the support element and the cover element of the bristle housing are made of plastic.Type: GrantFiled: August 17, 2004Date of Patent: January 12, 2010Assignee: MTU Aero Engines GmbHInventors: Stefan Beichl, Alfons Gail, Thomas Huppertz
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Patent number: 7445212Abstract: A brush seal for sealing a rotor with respect to a stator includes a bristle housing which is held on the stator or rotor, a cover plate, a supporting plate, a circumferential surface and two side surfaces and in which bristles oriented with their free ends to the rotor or stator are fastened. The bristle housing, for ensuring correct, anti-rotation installation in its seat, includes a first positioning arrangement on at least one side surface or the circumferential surface, the first positioning arrangement interacting in a positive-locking manner with a correspondingly configured second positioning arrangement on the stator or rotor or a separate fastening element for the definite positioning of the bristle housing.Type: GrantFiled: April 11, 2001Date of Patent: November 4, 2008Assignee: MTU Aero Engines GmbHInventors: Alfons Gail, Lodewijk Prins, Klemens Werner
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Publication number: 20080258403Abstract: A seal arrangement for a turbo-engine, for sealing a peripheral gap between a rotor and a stator is provided. The stator a seal holder provided with at least one groove for respectively receiving a segmented, dynamic seal. Segments of the dynamic seal are made up of a plurality of brush seal segments, and free ends of bristles of the brush seal segments extend in the radial direction project from the respective groove and lie on the rotor. The or every groove for receiving the brush-type seal segments is designed without an undercut, the brush-type seal segments being received in the respective groove without an undercut in a positive manner.Type: ApplicationFiled: February 8, 2006Publication date: October 23, 2008Applicant: MTU Aero Engines GmbHInventors: Stefan Beichl, Alfons Gail
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Patent number: 7165771Abstract: A brush seal assembly is provided for sealing components which move relative to one another. One of the components includes a recess or groove for accommodating a clamping sleeve which supports bristles. A support plate which is formed separately from the component and the clamping sleeve is pressed into the recess and abuts the recess wall surfaces and the clamping sleeve to hold the same in a predetermined working position.Type: GrantFiled: December 14, 2002Date of Patent: January 23, 2007Assignee: MTU Aero Engines GmbHInventors: Stefan Beichl, Carsten Butz, Christoph Cernay, Alfons Gail, Adriano Marchini, Alexander Rauschmeier
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Publication number: 20050116423Abstract: A brush seal assembly is provided for sealing components which move relative to one another. One of the components includes a recess or groove for accommodating a clamping sleeve which supports bristles. A support plate which is formed separately from the component and the clamping sleeve is pressed into the recess and abuts the recess wall surfaces and the clamping sleeve to hold the same in a predetermined working position.Type: ApplicationFiled: December 14, 2002Publication date: June 2, 2005Inventors: Stefan Beichl, Carsten Butz, Christoph Cernay, Alfons Gail, Adriano Marchini, Alexander Rauschmeier
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Publication number: 20050040602Abstract: A brush seal has a bristle housing formed by a cover element and a support element. A plurality of bristles, which are wound around a core element and secured to the core element by a clamping element are positioned in the bristle housing. At least one of the support element and the cover element of the bristle housing are made of plastic.Type: ApplicationFiled: August 17, 2004Publication date: February 24, 2005Applicant: MTU Aero Engines GmbHInventors: Stefan Beichl, Alfons Gail, Thomas Huppertz
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Publication number: 20050006968Abstract: A sealing arrangement for a non-hermetic seal between a stator and a rotor includes a brush gasket having a plurality of bristles wound around a core element and affixed to the core element with a clamping element. The brush gasket is disposed at least partially in a receiving space delimited by a support element and by a cover element. The support element, the cover element, and the brush gasket are secured using at least one fitting element in at least one recess, especially in an axial groove or bore, in the stator. In addition to being positioned by using the at least one fitting element, the components may also be affixed to the stator using an attachment element.Type: ApplicationFiled: July 9, 2004Publication date: January 13, 2005Applicant: MTU Aero Engines GmbHInventors: Stefan Beichl, Christoph Cernay, Alfons Gail, Erhan Ucgul
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Patent number: 6695314Abstract: The invention relates to a brush seal for sealing a rotor against a stator. A brush housing is provided for fastening brushes whose free ends are directed towards the stator or rotor. The brush housing is held on the rotor or stator and has a support plate. In the brush seal the free ends of the brushes are provided with a slide-ring to improve the sealing effect and reduce the wear.Type: GrantFiled: February 14, 2002Date of Patent: February 24, 2004Assignee: MTU Aero Engines GmbHInventors: Alfons Gail, Klemens Werner
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Patent number: 6352263Abstract: The invention relates to a brush seal 1 with bristles 3 arranged at an angle, for sealing a rotor (2) against a stator. The brush seal (1) has a support plate (9) with a longitudinal section (10) and a support section (11). The brush seal (1) also has bristles (3) with shaft sections (6) and bristle sections (7) arranged at an angle to the shaft sections (6). The end of the bristle sections (7) run against the sealing area (U) of the rotor (2). A bending clearance (13) is provided between the shaft sections (6) of the bristles (3) and the support plate (9). Between the bristle sections (7) and across the entire length of the support section (11) of the support plate (9) there is a gap (12) which closes if there is differential pressure on opposite sides of the bristles (3).Type: GrantFiled: December 3, 1999Date of Patent: March 5, 2002Assignee: MTU Motoren-und Turbinen-UnionInventors: Alfons Gail, Stefan Beichl, Werner Klemens
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Publication number: 20020020968Abstract: A brush seal for sealing a rotor with respect to a stator includes a bristle housing which is held on the stator or rotor, a cover plate, a supporting plate, a circumferential surface and two side surfaces and in which bristles oriented with their free ends to the rotor or stator are fastened. The bristle housing, for ensuring correct, anti-rotation installation in its seat, includes a first positioning arrangement on at least one side surface or the circumferential surface, the first positioning arrangement interacting in a positive-locking manner with a correspondingly configured second positioning arrangement on the stator or rotor or a separate fastening element for the definite positioning of the bristle housing.Type: ApplicationFiled: April 11, 2001Publication date: February 21, 2002Inventors: Alfons Gail, Lodewijk Prins, Klemens Werner
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Patent number: 6302400Abstract: A brush seal for sealing a rotor against a housing. The brush seal includes a front panel and a supporting plate attached to the housing wherein a number of bristles are disposed between the front panel and supporting plate. A seal housing that defines a fit surface is formed by cold joining the front panel and supporting plate. The front panel or the supporting plate include a beaded lip for firmly joining the front panel to the supporting plate.Type: GrantFiled: February 17, 2000Date of Patent: October 16, 2001Assignee: MTU Motoren-und Turbinen-Union München GmbHInventors: Klemens Werner, Alfons Gail
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Patent number: 6293553Abstract: A brush seal for sealing a rotor against a housing. The brush seal includes a number of bristles that are each attached to the housing by a clamp member. The clamp member is positioned between a supporting plate and a front panel. The supporting plate has a supporting section for supporting the bristles in an inclined position.Type: GrantFiled: February 14, 2000Date of Patent: September 25, 2001Assignee: Mtu Motoren-und Turbinen-Union München GmbHInventors: Klemens Werner, Alfons Gail
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Patent number: 6077038Abstract: A brush seal assembly for turbo-engines is provided for sealing off spaces on a circumferential gap which are differently acted upon by pressure, particularly between an engine stator and an engine rotor. A holding device for a bristle bundle is provided on the engine stator, from which holding device the bristle bundle is guided between circumferential webs in a sealing manner against the engine rotor and forms an axial gap in the circumferential direction with respect to one web facing the high-pressure side. The upstream one of the circumferential webs, together with the engine rotor surface, forms an axial ring gap for flow of fluid therethrough. Turbulence reducing structure is disposed upstream of the upstream web in the high pressure space and serves to reduce the turbulence in flow of air from the upstream space through the axial ring gap. This turbulence reducing structure can be in the form of a metal sponge and/or a honey comb structure.Type: GrantFiled: December 19, 1997Date of Patent: June 20, 2000Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbHInventors: Alfons Gail, Uwe Michel, Edgar Pfister, Lothar Reisinger, Thomas Miller