Patents by Inventor Tom LARSEN
Tom LARSEN 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: 11300237Abstract: An assembly comprising an end-fitting and an unbonded flexible pipe comprising several layers. The unbonded flexible pipe has an end-part entering the end-fitting at the front end and the layers of the unbonded flexible pipe being terminated in the end-fitting. The unbonded flexible pipe further comprises a first electrically conductive layer and a second electrically conductive layer, where the first electrically conductive layer is electrically insulated from the second electrically conductive layer. The end-fitting comprises a first electric zone electrically connected with the first electrically conductive layer, and a second electric zone electrically connected with the second electrically conductive layer, the first electric zone is electrically separated from the second electric zone, and the end-fitting comprises a third electric zone, the third electric zone being electrically separated from first electric zone and the second electric zone.Type: GrantFiled: February 19, 2018Date of Patent: April 12, 2022Assignee: NATIONAL OILWELL VARCO DENMARK I/SInventors: Thorsten Holst, Tom Larsen, Anders Straarup
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Patent number: 10655772Abstract: The present invention relates to an assembly including an end-fitting and an unbonded flexible pipe, which end-fitting is adapted for connecting the unbonded flexible pipe to a connector. The end-fitting has a through-going opening with a centerline and a front end and a rear end, and the end-fitting further provides for establishing an electrical connection to a least one electrical heating system in the unbonded flexible pipe. Moreover, the end-fitting includes at least one first metallic part having a first surface contacting a second surface of at least one second part in the end-fitting, wherein the first surface of the first metallic part, at least in the vicinity of the through-going opening, includes a coating having a high electrically resistivity. The invention also relates to a method for providing an end-fitting having good properties in respect of reducing galvanic corrosion.Type: GrantFiled: October 14, 2015Date of Patent: May 19, 2020Assignee: NATIONAL OILWELL VARCO DENMARK I/SInventors: Tom Larsen, Thorsten Holst
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Patent number: 10544892Abstract: The present invention relates to an assembly comprising an end-fitting and an unbonded flexible pipe having a length and a longitudinal axis, said flexible pipe comprising, from the inside and out, an internal armour layer, an internal pressure sheath, at least one external armour layer and an outer sheath, the first end of the unbonded flexible pipe being terminated in the end-fitting, and the end-fitting comprising means for connecting the internal armour layer to an external electrical power source. The means comprise connection points to the internal armour layer in the unbonded flexible pipe and connection points to the electrical power source wherein the connection points for the electrical power source are mounted in a housing adapted to an outer surface-part of the end-fitting.Type: GrantFiled: August 5, 2016Date of Patent: January 28, 2020Assignee: NATIONAL OILWELL VARCO DENMARK I/SInventors: Thorsten Holst, Anders Straarup, Tom Larsen
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Publication number: 20200011467Abstract: An assembly comprising an end-fitting and an unbonded flexible pipe comprising several layers. The unbonded flexible pipe has an end-part entering the end-fitting at the front end and the layers of the unbonded flexible pipe being terminated in the end-fitting. The unbonded flexible pipe further comprises a first electrically conductive layer and a second electrically conductive layer, where the first electrically conductive layer is electrically insulated from the second electrically conductive layer. The end-fitting comprises a first electric zone electrically connected with the first electrically conductive layer, and a second electric zone electrically connected with the second electrically conductive layer, the first electric zone is electrically separated from the second electric zone, and the end-fitting comprises a third electric zone, the third electric zone being electrically separated from first electric zone and the second electric zone.Type: ApplicationFiled: February 19, 2018Publication date: January 9, 2020Inventors: Thorsten Holst, Tom Larsen, Anders Straarup
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Patent number: 10261046Abstract: Disclosed are improved methods and structures for electrochemical sensors that may advantageously sense/detect chemical species including pollutants and/or energetics in a gaseous phase. Sensors according to the present disclosure may advantageously be fabricated using large scale microfabrication techniques and materials.Type: GrantFiled: January 9, 2017Date of Patent: April 16, 2019Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Beth L. Pruitt, Thomas Jaramillo, Tom Larsen, Frédéric Loizeau, Pierre-Alexandre Gross
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Publication number: 20180231163Abstract: The present invention relates to an assembly comprising an end-fitting and an unbonded flexible pipe having a length and a longitudinal axis, said flexible pipe comprising, from the inside and out, an internal armour layer, an internal pressure sheath, at least one external armour layer and an outer sheath, the first end of the unbonded flexible pipe being terminated in the end-fitting, and the end-fitting comprising means for connecting the internal armour layer to an external electrical power source. The means comprise connection points to the internal armour layer in the unbonded flexible pipe and connection points to the electrical power source wherein the connection points for the electrical power source are mounted in a housing adapted to an outer surface-part of the end-fitting.Type: ApplicationFiled: August 5, 2016Publication date: August 16, 2018Applicant: National Oilwell Varco Denmark I/SInventors: Thorsten Holst, Anders Straarup, Tom Larsen
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Publication number: 20170299092Abstract: The present invention relates to an assembly including an end-fitting and an unbonded flexible pipe, which end-fitting is adapted for connecting the unbonded flexible pipe to a connector. The end-fitting has a through-going opening with a centerline and a front end and a rear end, and the end-fitting further includes means for establishing an electrical connection to a least one electrical heating system in the unbonded flexible pipe. Moreover, the end-fitting includes at least one first metallic part having a first surface contacting a second surface of at least one second part in the end-fitting, wherein the first surface of the first metallic part, at least in the vicinity of the through-going opening, includes a coating having a high electrically resistivity. The invention also relates to a method for providing an end-fitting having good properties in respect of reducing galvanic corrosion.Type: ApplicationFiled: October 14, 2015Publication date: October 19, 2017Inventors: Tom Larsen, Thorsten Holst
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Publication number: 20170199147Abstract: Disclosed are improved methods and structures for electrochemical sensors that may advantageously sense/detect chemical species including pollutants and/or energetics in a gaseous phase. Sensors according to the present disclosure may advantageously be fabricated using large scale microfabrication techniques and materials.Type: ApplicationFiled: January 9, 2017Publication date: July 13, 2017Inventors: Beth L. Pruitt, Thomas JARAMILLO, Tom LARSEN, Frédéric LOIZEAU, Denis SPITZER, Pierre-Alexandre GROSS
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Publication number: 20160047701Abstract: The present invention relates to a micron-scale calorimeter and a calorimetry method utilizing the micron-scale calorimeter. In accordance with the invention, there is provided a micron-scale calorimeter comprising a micro-channel string, being restrained at at least two longitudinally distanced positions so as to form a free released double clamped string in-between said two longitudinally distanced positions said micro-channel string comprising a microfluidic channel having a closed cross section and extending in the longitudinal direction of the hollow string, acoustical means adapted to oscillate the string at different frequencies by emitting sound waves towards the string, optical means adapted to detect oscillating frequencies of the string, and controlling means controlling the strength and frequency of the sound wave emitted by the acoustical means and receiving a signal from the optical means representing the detected oscillating frequencies.Type: ApplicationFiled: April 4, 2014Publication date: February 18, 2016Applicant: Danmarks Tekniske UniversitetInventors: Muhammad Faheem Khan, Silvan Schmid, Anja Boisen, Tom Larsen
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Publication number: 20150293017Abstract: The present invention relates to a method for detecting photo-thermal absorbance of a material utilising a mechanically temperature sensitive resonator (20) and a sample being arrange in thermal communication with the temperature sensitive resonator. The present invention further relates to an apparatus for detecting photo-thermal absorbance of a sample.Type: ApplicationFiled: October 25, 2013Publication date: October 15, 2015Inventors: Shoko Yamada, Silvan Schmid, Anja Boisen, Tom Larsen
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Publication number: 20080184614Abstract: An apparatus and system for using semiochemical compositions to control insect pests including the navel orangeworm. Includes a source of at least one semiochemical composition contained within a housing and a dispenser to initiate the controlled release of the composition over an area of treatment in response to one or more control signals. Compound release is achieved by adjusting start times and stop times, at intervals that coincide with periods of high activity for an insect pest or in response to trap capture data for the insect pest. A transmitter may be included report operation and status for monitoring purposes. Optional receiver allows for remote control. Release of the composition may also depend on signals from a light sensor, temperature sensor or other environmental factors such as wind, humidity and rain. May use more than one semiochemical composition to address different insect pests.Type: ApplicationFiled: October 2, 2007Publication date: August 7, 2008Inventors: Bradley HIGBEE, Kristin KETNER, Tom LARSEN