Patents by Inventor Martin Raadkjær Jørgensen
Martin Raadkjær Jørgensen 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: 11693433Abstract: A thermal relief device (1) is described comprising a housing (2) having an inlet (3) and an outlet (4) connected by a relief channel (5). Such a thermal relief device should have a simple construction. To this end a microporous structure (10) is arranged between inlet (3) and outlet (4).Type: GrantFiled: December 5, 2019Date of Patent: July 4, 2023Assignee: Danfoss Power Solutions ApSInventors: Martin Raadkjær Jørgensen, Michael Winter
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Publication number: 20200183432Abstract: A thermal relief device (1) is described comprising a housing (2) having an inlet (3) and an outlet (4) connected by a relief channel (5). Such a thermal relief device should have a simple construction. To this end a microporous structure (10) is arranged between inlet (3) and outlet (4).Type: ApplicationFiled: December 5, 2019Publication date: June 11, 2020Inventors: Martin Raadkjær Jørgensen, Michael Winter
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Publication number: 20150192151Abstract: A hydraulic valve arrangement (1) is described comprising a supply port arrangement having a pressure port (P) and a tank port (T), a working port arrangement having at least a working port (A, B), a main valve (2), and a compensation valve (3), said compensation valve (3) being arranged between said pressure port (P) and a pressure channel (4) connected to said main valve (2), said compensation valve (3) forming a variable orifice between said pressure port (P) and said pressure channel (4). The control behavior of the compensation valve should be extended. To this end said compensation valve (3) is adjustable to connect said pressure channel (4) to said tank port (T).Type: ApplicationFiled: December 24, 2014Publication date: July 9, 2015Inventors: Carl Christian Dixen, Martin Raadkjaer Joergensen
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Patent number: 8356544Abstract: The invention concerns a method for controlling a raising drive, the raising process occurring by means of pressure activation of at least one lift cylinder and the lowering process occurring by means of relieving, and a control of the lowering speed occurring by means of a variable flow resistance. In order to achieve a load-independent lowering speed, the flow resistance is determined in dependence of at least one load signal.Type: GrantFiled: August 7, 2008Date of Patent: January 22, 2013Assignee: Sauer-Danfoss ApsInventors: Martin Raadkjaer Joergensen, Rudi Thomsen
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Patent number: 7954420Abstract: The invention concerns a hydraulic valve arrangement (1) having at least two working connections (A, B), a check valve (5, 6) being allocated to each working connection (A, B), and a pressure relief valve (7, 8) being allocated to each check valve (5, 6), each pressure relief valve (7, 8) being connected to a control pressure passage (17, 18). The valve arrangement shall ensure a reliable, pressure-less lowering, also in connection with single-actuated consumers, and further enable a pressure-less float position. For this purpose, the check valves (5, 6) can be opened by means of tappets (20, 21), whose sides facing away from the check valves (5, 6) are ending in a pressure chamber (22), which is connected to the control pressure passage (17, 18) of one of the pressure relief valves (7, 8).Type: GrantFiled: July 9, 2008Date of Patent: June 7, 2011Assignee: Sauer-Danfoss ApsInventors: Martin Raadkjaer Joergensen, Ken Petersen
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Patent number: 7703861Abstract: The invention concerns a brake valve arrangement of a vehicle having a trailer coupling and at least one controllable hydraulic consumer, with a brake valve (27). It is endeavored to provide a similar embodiment of a vehicle with such a brake valve arrangement. For this purpose, the brake valve (27) is combined with at least one control valve (11, 12) controlling the hydraulic consumer into forming a valve block (10) having several valve modules.Type: GrantFiled: January 18, 2006Date of Patent: April 27, 2010Assignee: Sauer-Danfoss ApsInventors: Carsten Christensen, Martin Raadkjaer Joergensen
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Publication number: 20090045017Abstract: The invention concerns a method for controlling a raising drive, the raising process occurring by means of pressure activation of at least one lift cylinder and the lowering process occurring by means of relieving, and a control of the lowering speed occurring by means of a variable flow resistance. In order to achieve a load-independent lowering speed, the flow resistance is determined in dependence of at least one load signal.Type: ApplicationFiled: August 7, 2008Publication date: February 19, 2009Applicant: Sauer-Danfoss ApsInventors: Martin Raadkjaer Joergensen, Rudi Thomsen
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Publication number: 20090014074Abstract: The invention concerns a hydraulic valve arrangement (1) having at least two working connections (A, B), a check valve (5, 6) being allocated to each working connection (A, B), and a pressure relief valve (7, 8) being allocated to each check valve (5, 6), each pressure relief valve (7, 8) being connected to a control pressure passage (17, 18). The valve arrangement shall ensure a reliable, pressure-less lowering, also in connection with single-actuated consumers, and further enable a pressure-less float position. For this purpose, the check valves (5, 6) can be opened by means of tappets (20, 21), whose sides facing away from the check valves (5, 6) are ending in a pressure chamber (22), which is connected to the control pressure passage (17, 18) of one of the pressure relief valves (7, 8).Type: ApplicationFiled: July 9, 2008Publication date: January 15, 2009Applicant: Sauer-Danfoss ApsInventors: Martin Raadkjaer Joergensen, Ken Petersen
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Patent number: 7168192Abstract: The invention concerns a driving device, particularly a lifting device for a working vehicle, with a hydraulic drive, in the form of a motor with a first connection and a second connection, a pump, a control valve arrangement between the pump and the drive, and an operating device with at least one operating element with a setting area, with which at least one parameter of the drive can be set. It is endeavoured to provide a simple manner of extending the functionality of the lifting device. For this purpose, it is ensured that the control valve arrangement is optionally controlling the drive to be single-acting or double-acting and the setting area has a first section, in which the drive is controlled to be single-acting and a second section, in which the drive is controlled to be double-acting.Type: GrantFiled: March 9, 2004Date of Patent: January 30, 2007Assignee: Sauer-Danfoss (Nordborg) A/SInventor: Martin Raadkjaer Joergensen
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Patent number: 7036421Abstract: The invention concerns a driving device, particularly a lifting device for a working vehicle, with a drive in the form of a hydraulic motor, the drive having a first connection and a second connection, a pump and a control valve arrangement between the drive and the pump. It is endeavoured to provide a simple way of extending the functionality of such lifting devices. For this purpose, the control valve arrangement can be switched from a first operating state, in which the motor is driven in a single-acting manner, to a second operating state, in which the motor is driven in a double-acting manner.Type: GrantFiled: March 9, 2004Date of Patent: May 2, 2006Assignee: Sauer-Danfoss (Nordborg) A/SInventor: Martin Raadkjaer Joergensen
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Patent number: 7028710Abstract: A hydraulic valve system (1) has a supply connection arrangement, having a high-pressure connection (P) and a low-pressure connection, with a working connection arrangement, having two working connections (A, B), with a control valve (3), which is arranged between the supply connection arrangement and the working connection arrangement, and with a non-return valve (24, 28) for each working connection (A, B). The valve being arranged between the control valve (3) and the working connection arrangement. A tappet (36) mechanically opening the valve element (25, 29) of said non-return valve.Type: GrantFiled: May 27, 2003Date of Patent: April 18, 2006Assignee: Sauer-Danfoss ApSInventor: Martin Raadkjaer Joergensen
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Publication number: 20040194618Abstract: The invention concerns a driving device, particularly a lifting device for a working vehicle, with a hydraulic drive, in the form of a motor with a first connection and a second connection, a pump, a control valve arrangement between the pump and the drive, and an operating device with at least one operating element with a setting area, with which at least one parameter of the drive can be set. It is endeavoured to provide a simple manner of extending the functionality of the lifting device. For this purpose, it is ensured that the control valve arrangement is optionally controlling the drive to be single-acting or double-acting and the setting area has a first section, in which the drive is controlled to be single-acting and a second section, in which the drive is controlled to be double-acting.Type: ApplicationFiled: March 9, 2004Publication date: October 7, 2004Applicant: Sauer-Danfoss (Nordborg) A/SInventor: Martin Raadkjaer Joergensen
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Publication number: 20040177749Abstract: The invention concerns a driving device, particularly a lifting device for a working vehicle, with a drive in the form of a hydraulic motor, the drive having a first connection and a second connection, a pump and a control valve arrangement between the drive and the pump. It is endeavoured to provide a simple way of extending the functionality of such lifting devices. For this purpose, the control valve arrangement can be switched from a first operating state, in which the motor is driven in a single-acting manner, to a second operating state, in which the motor is driven in a double-acting manner.Type: ApplicationFiled: March 9, 2004Publication date: September 16, 2004Applicant: Sauer-Danfoss (Nordborg) A/SInventor: Martin Raadkjaer Joergensen
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Publication number: 20030226597Abstract: A hydraulic valve system (1) has a supply connection arrangement, having a high-pressure connection (P) and a low-pressure connection, with a working connection arrangement, having two working connections (A, B), with a control valve (3), which is arranged between the supply connection arrangement and the working connection arrangement, and with a non-return valve (24, 28) for each working connection (A, B). The valve being arranged between the control valve (3) and the working connection arrangement. A tappet (36) mechanically opening the valve element (25, 29) of said non-return valve.Type: ApplicationFiled: May 27, 2003Publication date: December 11, 2003Applicant: Sauer-Danfoss (Nordborg) A/SInventor: Martin Raadkjaer Joergensen