Patents by Inventor Kjeld Buus Jensen
Kjeld Buus Jensen 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: 9114831Abstract: The invention provides a method and a system for moving an element, e.g. a rudder of a ship or a wheel of a vehicle. The element is moved by a hydraulic fluid. According to the invention, an operator indicates a desired movement, and in accordance with the desired movement, at fluid is provided from at least three fluid providers each providing a share of the fluid in parallel streams and only considering the desired movement not the shares provided by the other fluid providers. The invention allows continuation of a steering task even if one fluid provider is disabled, and the invention allows the continuation even without having to notice that one provider is disabled. Accordingly, the invention provides an improvement and simplification relative to the known hydraulic steering systems.Type: GrantFiled: December 14, 2007Date of Patent: August 25, 2015Assignee: Danfoss Power Solutions ApSInventors: Preben Albrecht, John Kristensen, Steve Crow, Kjeld Buus Jensen
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Patent number: 8660754Abstract: The invention provides a steering system for a vehicle, a ship etc. The steering system has a steering handle for the operator of the vehicle, a set of signal processors, a sensor which determines a position of the steered element of the vehicle, and a controller which moves the steered element. The steered element could e.g. be the front wheels of a car. The signal processors are adapted to determine an error between the desired position of the steered element and an actual position of the steered element. In order to make the steering system more fault tolerant, the error signal is amplified based on the speed by which the steering handle is moved, and an error in the sensor therefore becomes less critical. The invention further provides a steering method, a steering control unit and a vehicle provided with a steering system of the mentioned kind.Type: GrantFiled: August 14, 2008Date of Patent: February 25, 2014Assignee: Sauer-Danfoss ApsInventors: John Kristensen, Preben Albrecht, Steve Crow, Kjeld Buus Jensen
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Patent number: 8079439Abstract: The invention concerns a hydraulic steering with a steering initiator, a steering unit with feedback properties, which can be activated by the steering initiator, the steering unit having a supply connection arrangement with a pressure connection (P) and a tank connection (T) and a working connection arrangement with two working connections (L, R), an auxiliary-force operated steering valve, which is located in parallel with the steering unit between the supply connection arrangement (P, T) and the working connection arrangement (L, R), and a feedback suppressing device, which is active, when the steering valve is active. It is endeavored to find a simple manner of ensuring the priority of the steering initiator over the steering valve. For this purpose, the steering initiator interacts with an activation sensor, which deactivates the feedback suppressing device on an activation of the steering initiator.Type: GrantFiled: November 2, 2009Date of Patent: December 20, 2011Assignee: Sauer-Danfoss ApsInventors: Bendt Porskrog, Kjeld Buus Jensen, Finn Visgaard Nielsen, Svend Erik Thomsen
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Patent number: 7997378Abstract: The invention concerns a hydraulic steering with a steering initiator, a steering unit with feedback properties, which can be activated by the steering initiator, the steering unit having a supply connection arrangement with a pressure connection (P) and a tank connection (T) and a working connection arrangement with two working connections (L, R), an auxiliary-force operated steering valve, which is located in parallel with the steering unit between the supply connection arrangement (P, T) and the working connection arrangement (L, R), and a feedback suppressing device, which is active, when the steering valve is active. It is endeavoured to find a simple manner of ensuring the priority of the steering initiator over the steering valve. For this purpose, the steering initiator interacts with an activation sensor, which deactivates the feedback suppressing device on an activation of the steering initiator.Type: GrantFiled: November 2, 2009Date of Patent: August 16, 2011Assignee: Sauer-Danfoss ApsInventors: Bendt Porskrog, Kjeld Buus Jensen, Finn Visgaard Nielsen, Svend Erik Thomsen
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Publication number: 20100044142Abstract: The invention concerns a hydraulic steering with a steering initiator, a steering unit with feedback properties, which can be activated by the steering initiator, the steering unit having a supply connection arrangement with a pressure connection (P) and a tank connection (T) and a working connection arrangement with two working connections (L, R), an auxiliary-force operated steering valve, which is located in parallel with the steering unit between the supply connection arrangement (P, T) and the working connection arrangement (L, R), and a feedback suppressing device, which is active, when the steering valve is active. It is endeavoured to find a simple manner of ensuring the priority of the steering initiator over the steering valve. For this purpose, the steering initiator interacts with an activation sensor, which deactivates the feedback suppressing device on an activation of the steering initiator.Type: ApplicationFiled: November 2, 2009Publication date: February 25, 2010Applicant: Sauer-Danfoss ApsInventors: Bendt Porskrog, Kjeld Buus Jensen, Finn Visgaard Nielsen, Svend Erik Thomsen
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Publication number: 20100044143Abstract: The invention concerns a hydraulic steering with a steering initiator, a steering unit with feedback properties, which can be activated by the steering initiator, the steering unit having a supply connection arrangement with a pressure connection (P) and a tank connection (T) and a working connection arrangement with two working connections (L, R), an auxiliary-force operated steering valve, which is located in parallel with the steering unit between the supply connection arrangement (P, T) and the working connection arrangement (L, R), and a feedback suppressing device, which is active, when the steering valve is active. It is endeavoured to find a simple manner of ensuring the priority of the steering initiator over the steering valve. For this purpose, the steering initiator interacts with an activation sensor, which deactivates the feedback suppressing device on an activation of the steering initiator.Type: ApplicationFiled: November 2, 2009Publication date: February 25, 2010Applicant: Sauer-Danfoss ApsInventors: Bendt Porskrog, Kjeld Buus Jensen, Finn Visgaard Nielsen, Svend Erik Thomsen
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Patent number: 7610988Abstract: The invention concerns a hydraulic steering with a steering initiator, a steering unit with feedback properties, which can be activated by the steering initiator, the steering unit having a supply connection arrangement with a pressure connection (P) and a tank connection (T) and a working connection arrangement with two working connections (L, R), an auxiliary-force operated steering valve, which is located in parallel with the steering unit between the supply connection arrangement (P, T) and the working connection arrangement (L, R), and a feedback suppressing device, which is active, when the steering valve is active. It is endeavored to find a simple manner of ensuring the priority of the steering initiator over the steering valve. For this purpose, the steering initiator interacts with an activation sensor, which deactivates the feedback suppressing device on an activation of the steering initiator.Type: GrantFiled: February 18, 2005Date of Patent: November 3, 2009Assignee: Sauer-Danfoss ApsInventors: Bendt Porskrog, Kjeld Buus Jensen, Finn Visgaard Nielsen, Svend Erik Thomsen
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Publication number: 20090048736Abstract: The invention provides a steering system for a vehicle, a ship etc. The steering system has a steering handle for the operator of the vehicle, a set of signal processors, a sensor which determines a position of the steered element of the vehicle, and a controller which moves the steered element. The steered element could e.g. be the front wheels of a car. The signal processors are adapted to determine an error between the desired position of the steered element and an actual position of the steered element. In order to make the steering system more fault tolerant, the error signal is amplified based on the speed by which the steering handle is moved, and an error in the sensor therefore becomes less critical. The invention further provides a steering method, a steering control unit and a vehicle provided with a steering system of the mentioned kind.Type: ApplicationFiled: August 14, 2008Publication date: February 19, 2009Applicant: Sauer-Danfoss ApsInventors: John Kristensen, Preben Albrecht, Steve Crow, Kjeld Buus Jensen
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Publication number: 20080236931Abstract: The invention provides a steering system e.g. for a vehicle. The system comprises a system-pump, a steering actuator, a rotary valve, a rotary meter, and a motor. The system-pump is arranged to provide a flow of a fluid to the steering actuator via the rotary valve and via the rotary meter, and the motor is arranged to provide rotation of the rotary valve and the rotary meter. To handle an emergency situation if the system-pump fails, the motor is dimensioned to operate the rotary meter as a fail-operational pump for pumping a flow of the fluid to the steering actuator if the system-pump fails.Type: ApplicationFiled: February 7, 2008Publication date: October 2, 2008Applicant: SAUER-DANFOSS APSInventors: Stephen Crow, Kjeld Buus Jensen, Preben Albrecht, John Kristensen
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Publication number: 20080236932Abstract: The invention provides a method and a system for moving an element, e.g. a rudder of a ship or a wheel of a vehicle. The element is moved by a hydraulic fluid. According to the invention, an operator indicates a desired movement, and in accordance with the desired movement, at fluid is provided from at least three fluid providers each providing a share of the fluid in parallel streams and only considering the desired movement not the shares provided by the other fluid providers. The invention allows continuation of a steering task even if one fluid provider is disabled, and the invention allows the continuation even without having to notice that one provider is disabled. Accordingly, the invention provides an improvement and simplification relative to the known hydraulic steering systems.Type: ApplicationFiled: December 14, 2007Publication date: October 2, 2008Applicant: Sauer-Danfoss ApSInventors: Preben Albrecht, John Kristensen, Steve Crow, Kjeld Buus Jensen