Patents by Inventor Thomas Kelch
Thomas Kelch 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: 9062497Abstract: Measurements made by a rotating sensor on a bottomhole assembly are used to determine the toolface angle of the BHA. The method includes using a phase locked loop (PLL) to determine a phase difference between the sensor output and a reference signal.Type: GrantFiled: October 28, 2009Date of Patent: June 23, 2015Assignee: BAKER HUGHES INCORPORATEDInventors: Ingolf Wassermann, Fang Zhang, Thomas Kelch, Levin L. Bong, Sven Krueger
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Patent number: 8689905Abstract: An apparatus for use in a wellbore is provided, which in one embodiment includes a drilling motor and a steering unit placed about a shaft between a lower section of a stator in the motor and a drill bit. The steering unit includes a substantially non-rotating member and a force application member on the non-rotating member configured to radially extend the force application member from the non-rotating member. In another embodiment, the steering unit may include, rotating member configured to rotate a drill bit, a steering member configured to orient the drill bit along a selected direction, a first steering device configured to orient the steering member in the wellbore, and a second steering device configured to maintain orientation of the steering member when drilling the wellbore.Type: GrantFiled: November 23, 2010Date of Patent: April 8, 2014Assignee: Baker Hughes IncorporatedInventors: Sven Krueger, Michael Koppe, Bernd Santelmann, Thomas Kelch, Niko Spreckelmeyer, Olof Hummes
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Patent number: 7983113Abstract: The present invention provides a method and system in which signals from the surface are sent by changing flow rate of the drilling fluid supplied to the drill string during drilling of a wellbore. The signals are sent based on a fixed or dynamic time period schemes so that the sent signals cross a dynamic threshold value in a known manner. A controller downhole sets the dynamic threshold and determines the number of times a parameter, such as voltage, relating to the changes in the flow rate crosses the set dynamic threshold. Based on the number of the number of crossings and/or the number of crossings and the timing of such crossings, the controller ascertains the signal sent from the surface for use downhole.Type: GrantFiled: June 29, 2007Date of Patent: July 19, 2011Assignee: Baker Hughes IncorporatedInventors: Sven Krueger, Thomas Kelch, Joachim Treviranus, Henning Doerge, Marc Kurella
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Publication number: 20110120775Abstract: An apparatus for use in a wellbore is provided, which in one embodiment includes a drilling motor and a steering unit placed about a shaft between a lower section of a stator in the motor and a drill bit. The steering unit includes a substantially non-rotating member and a force application member on the non-rotating member configured to radially extend the force application member from the non-rotating member. In another embodiment, the steering unit may include, rotating member configured to rotate a drill bit, a steering member configured to orient the drill bit along a selected direction, a first steering device configured to orient the steering member in the wellbore, and a second steering device configured to maintain orientation of the steering member when drilling the wellbore.Type: ApplicationFiled: November 23, 2010Publication date: May 26, 2011Applicant: BAKER HUGHES INCORPORATEDInventors: Sven Krueger, Michael Koppe, Bernd Santelmann, Thomas Kelch, Niko Spreckelmeyer, Olof Hummes
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Publication number: 20100187008Abstract: Measurements made by a rotating sensor on a bottomhole assembly are used to determine the toolface angle of the BHA. The method includes using a phase locked loop (PLL) to determine a phase difference between the sensor output and a reference signal.Type: ApplicationFiled: October 28, 2009Publication date: July 29, 2010Applicant: BAKER HUGHES INCORPORATEDInventors: Ingolf Wassermann, Fang Zhang, Thomas Kelch, Levin L. Bong, Sven Krueger
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Publication number: 20100101860Abstract: Measurements made by a rotating sensor on a bottomhole assembly are used to determine the toolface angle of the BHA. The method includes using a phase locked loop (PLL) to determine a phase difference between the sensor output and a reference signal.Type: ApplicationFiled: October 29, 2008Publication date: April 29, 2010Applicant: BAKER HUGHES INCORPORATEDInventors: Ingolf Wassermann, Fang Zhang, Thomas Kelch, Levin L. Bong, Sven Krueger
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Publication number: 20080007423Abstract: The present invention provides a method and system in which signals from the surface are sent by changing flow rate of the drilling fluid supplied to the drill string during drilling of a wellbore. The signals are sent based on a fixed or dynamic time period schemes so that the sent signals cross a dynamic threshold value in a known manner. A controller downhole sets the dynamic threshold and determines the number of times a parameter, such as voltage, relating to the changes in the flow rate crosses the set dynamic threshold. Based on the number of the number of crossings and/or the number of crossings and the timing of such crossings, the controller ascertains the signal sent from the surface for use downhole.Type: ApplicationFiled: June 29, 2007Publication date: January 10, 2008Applicant: BAKER HUGHES INCORPORATEDInventors: Sven Krueger, Thomas Kelch, Joachim Treviranus, Henning Doerge, Marc Kurella
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Patent number: 6245990Abstract: A gas-insulated tubular conductor arrangement is provided in which, in order to simplify the manufacture, transport and handling of the inner conductor, the support regions of the tubular inner conductor formed with the aid of columnar supports, are modified in that the inner conductor is formed, in the support region, by a short tubular intermediate piece manufactured by casting. The short tubular intermediate piece is connected at its ends with the adjoining inner conductor segments is fashioned in one piece with a respective blind-hole-type sleeve that surrounds one end of a columnar support.Type: GrantFiled: November 23, 1999Date of Patent: June 12, 2001Assignee: Siemens AktiengesellschaftInventor: Thomas Kelch
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Patent number: 6166323Abstract: A connecting unit containing a four-segment inner conductor connection in an enclosure provided with two partitioning insulators and a installation opening, is used to provide easy mechanical access to an inner conductor of two partitioned sections of a gas-insulated, tubular conductor system, with one conductor segment of the inner conductor connection detachably connected in a shape of a claw to adjacent connector segments.Type: GrantFiled: December 21, 1999Date of Patent: December 26, 2000Assignee: Siemens AGInventors: Thomas Kelch, Mario Kieper, Christoph Braunlich
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Patent number: 6118068Abstract: Attachment points of an internal conductor in single-phase gas-insulated power transmission systems with tubular external and internal conductors are designed to have high dielectric strength and are of simple design, an end piece (6) of internal conductor is axially secured in a post insulator two head pieces (61, 71) radially and axially secured in a feed-through bore of the post insulator and axially connected to one another. The head pieces are configured as control electrodes. One head-shaped piece is also used as a plug contact with the adjacent internal conductor section.Type: GrantFiled: January 13, 1999Date of Patent: September 12, 2000Assignee: Siemens AktiengesellschaftInventors: Thomas Kelch, Mario Kieper, Christoph Braunlich
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Patent number: 6111548Abstract: Sensors positioned in power transmission systems with tubular enclosures have radio interrogation capabilities. The radio antenna assigned to a sensor is a planar antenna with a radiating element and a conductive baseplate, with the radiating element being designed as a reed that is provided in a self-supporting manner in a recess in the baseplate and is short-circuited to the baseplate at one end. This forms a quarter-wave antenna which can be tuned by using a metal resonating member with a U-shaped cross-section and can be combined with a surface-wave sensor.Type: GrantFiled: February 25, 1999Date of Patent: August 29, 2000Assignee: Siemens AGInventors: Christoph Braunlich, Armin Diessner, Jorg Gorablenkow, Thomas Kelch, Christian Korden, Klaus-P Lange
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Patent number: 5907123Abstract: A metal-sheathed high-voltage line with a high-voltage conductor and a metal sheath surrounding it coaxially has at least one securing element for a disk-shaped insulating support which has a first and second ring), each of which is concentric with the high-voltage conductor and each of which has a web projecting radially with respect to the longitudinal axis of the high-voltage line, where the insulating support is secured between the webs of the rings. The rings are jammed tightly by a wedge action on the high-voltage conductor.Type: GrantFiled: November 21, 1997Date of Patent: May 25, 1999Assignee: Siemens AktiengesellschaftInventors: Friedrich Lobner, Thomas Kelch, Manfred Meinherz
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Patent number: 5872346Abstract: A high-voltage metal-cladded switchgear having two busbars (1, 2) and a power switch (4) with a first connected to terminals (12, 13) of two isolating switches (10, 11). The power switch has a contact point (17) that can be removed from the enclosure (3) together with the power switch (4) and has at least two contact devices for connection to the terminals (12, 13) of the isolating switches (10, 11). No assembly work is necessary inside the enclosure (3). The internal conductors are connected by inserting the power switch (4).Type: GrantFiled: August 22, 1997Date of Patent: February 16, 1999Assignee: Siemens AktiengesellschaftInventors: Manfred Meinherz, Thomas Kelch
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Patent number: 5291369Abstract: A three-pole, metal-encased, pressurized-gas-insulated, high-voltage switchgear may include a single-pole, encapsulated, high-voltage power switch. Breaker units are located in a pressure chamber and are arranged with longitudinal axes thereof parallel to one another, and are attached to a bearing component which also carries the casing of the drive. In order to increase the mechanical rigidity of the bearing component, a shared gear casing with two partitions is provided for the switching mechanism, to which the breaker units are attached via bearing rings. The bearing rings, held by bridges, lie in front of three apertures on a side wall of the gear casing, to the flanges of which the pressure chambers are also attached. In the interior of the gear casing, carriers for the bearings of the drive shafts are provided, which proceed from the partitions or an outer wall. All bearing and sealing surfaces of the gear casing lie in parallel planes in each case, and can be machined in a single clamping process.Type: GrantFiled: July 2, 1992Date of Patent: March 1, 1994Assignee: Siemens AktiengesellschaftInventors: Thomas Kelch, Manfred Meinherz
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Patent number: 5025118Abstract: A metal-clad, compressed gas-blast circuit-breaker (1) with a gas-filled housing (2) and with an interrupter unit (3), which is supported, insulated in the housing (2), has at least one insulating drive rod (26) coupled to the switching contact (20) to actuate a movable switching contact (20). This drive rod (26), which is connected to the interrupter unit (3), extends through a controlling element (5), which takes up and guides the flow of the switching gases at the time of the switching-off operation, as well as through a hollow post insulator (4) connected to the controlling element (5). The controlling element (5) allows only a portion of the switching gases to pass through in the direction of at least one drive rod (26) and diverts the remaining portion in an at least radial direction. In this manner, the pressurization of the drive rod (26) and the post insulator (4) by the switching gases is reduced.Type: GrantFiled: January 22, 1990Date of Patent: June 18, 1991Assignee: Siemens AktiengesellschaftInventors: Manfred Meinherz, Freidrich-Wilh Veuhoff, Gunther Gilmozzi, Thomas Kelch