Patents by Inventor Poul Ennemark
Poul Ennemark 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: 20180319430Abstract: A hydraulic steering unit (1) is described, said hydraulic steering unit (1) comprising a supply port arrangement having a pressure port (P) connected to a main flow path (3) and a tank port (T) connected to a tank flow path (4), a working port arrangement having a left working port (L) connected to a left working flow path (5) and a right working port (R) connected to a right working flow path (6), a bridge arrangement (14) of variable orifices having a first left orifice (A2L) connected to the main flow path (3) and to the left working flow path (5), a first right orifice (A2R) connected to the main flow path (3) and to the right working flow path (6), a second left orifice (A3L) connected to the left working flow path (5) and to the tank flow path (4), and a second right orifice (A3R) connected to the right working flow path (6) and to the tank flow path (4). Such a hydraulic steering unit should be operated together with a pressure source of fixed displacements.Type: ApplicationFiled: May 3, 2018Publication date: November 8, 2018Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
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Publication number: 20180319433Abstract: A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (P) connected to a main flow path (6) and a tank port (T) connected to a tank flow path (7), a working port arrangement having a left working port connected to a left working flow path (8) and a right working port (R) connected to a right working flow path (9), a bridge arrangement (14) of variable orifices (A2L, A2R, A3L, A3R) having a first left orifice (A2L) connected to the main flow path (6) and to the left working flow path (8), a first right orifice (A2R) connected to the main flow path (6) and to the right working flow path (9), a second left orifice (A3L) connected to the left working flow path (8) and to the tank flow path (7), and a second right orifice (A3R) connected to the right working flow path (9) and to the tank flow path (7). Such a steering unit should make steering comfortable.Type: ApplicationFiled: May 3, 2018Publication date: November 8, 2018Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
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Publication number: 20180319426Abstract: A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (8) connected to a main flow path (2) and a tank port (5) connected to a tank flow path (3), a working port arrangement having a left working port (L) connected to a left working flow path (4) and a right working port (R) connected to a right working flow path (5), a variable first left orifice (A2L) connected to the main flow path (2) and to the left working flow path (4), a variable first right orifice (A2R) connected to the main flow path (2) and to the right working flow path (5), a variable second left orifice (A3L) connected to the left working flow path (4) and to the tank flow path (3), and a variable second right orifice (A3R) connected to the right working flow path (5) and to the tank flow path (3). Such a steering unit should allow comfortable steering. To this end a measuring motor (15) is arranged in one of the working flow parts (4, 5).Type: ApplicationFiled: May 3, 2018Publication date: November 8, 2018Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
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Publication number: 20180319432Abstract: A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (8) connected to a main flow path (6) and a tank port (T) connected to a tank flow path (7), a working port arrangement having a left working port (L) connected to a left working flow path (9) and a right working port (R) connected to a right working flow path (10), a bridge arrangement (14) of variable orifices having a first left orifice (A2L) connected to the main flow path (6) and to the left working flow path (9), a first right orifice (A2R) connected to the main flow path (6) and to the right working flow path (10), a second left orifice (A3L) connected to the left working flow path (9) and to the tank flow path (7), and a second right orifice (A3R) connected to the right working flow path (10) and to the tank flow path (7). Such a hydraulic steering unit should allow comfortable steering.Type: ApplicationFiled: May 3, 2018Publication date: November 8, 2018Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
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Patent number: 9950737Abstract: A hydraulic steering system (1) is described comprising a first steering circuit (2a) and a second steering circuit (2b), each of said steering circuits (2a, 2b) comprising a steering device (3a, 3b) and a steering motor (4a, 4b) connected to said steering device (3a, 3b), each of said steering devices (3a, 3b) comprising a supply port arrangement having a high pressure port (Pa, Pb) and a low pressure port (Ta, Tb), a working port arrangement having two working ports (La, Ra; Lb, Rb) connected to said steering motor (4a, 4b), a control valve (5a, 5b), and a measuring motor (6a, 6b). Such a steering system should have a comfortable steering behavior. To this end in each of said steering devices (3a, 3b) said measuring motor (6a, 6b) is arranged in a working line (19a, 20b) between said control valve (5a, 5b) and one of said working ports (La, Ra; Lb, Rb).Type: GrantFiled: April 7, 2016Date of Patent: April 24, 2018Assignee: Danfoss Power Solutions ApSInventors: Soeren Liljenberg, Tom Rudolph, Tom Tychsen, Jens Vester, Poul Ennemark
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Patent number: 9707998Abstract: A method for controlling steering of a vehicle (1) is provided, the vehicle (1) defining two or more steerable axes, and the vehicle (1) comprising a number of wheels (2), each of said wheels (2) being associated with one of said steerable axes in such a manner that steering of a given wheel (2) is obtained by steering the steerable axis associated therewith. The method comprises providing a first, a second and a third steering input. The first steering input defines a point of intersection between a virtual steering axis (4) and a longitudinal center axis defined by the vehicle (1). The second steering input defines an angle between the virtual steering axis (4) and the longitudinal center axis. The third steering input defines a position of a center of rotation (5) along the virtual steering axis (4).Type: GrantFiled: June 25, 2015Date of Patent: July 18, 2017Assignee: Danfoss Power Solutions ApSInventors: Poul Ennemark, Morten Hoeck Petersen
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Patent number: 9562544Abstract: A hydraulic system (1) is provided comprising a supply port arrangement (P, T), a working port arrangement (A, B), and a booster section (7), said supply port arrangement having at least a supply port (P), said booster section (7) being arranged between said supply port arrangement (P, T) and said working port arrangement (A, B). The operational possibilities of such a hydraulic system should be extended. To this end said working port arrangement comprises at least two working ports (A, B), flow direction changing means (9) are provided changing a flow direction through said working port arrangement and inactivating means (16) are provided inactivating or activating said booster section (7) for each flow direction.Type: GrantFiled: August 19, 2014Date of Patent: February 7, 2017Assignee: miniBOOSTER HYDRAULICS A/SInventors: Joergen Mads Clausen, Christen Espersen, Leif Hansen, Brian Petersen, Joergen P. Todsen, Poul Ennemark, Knud Meldgaard Jensen, Tom Tychsen
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Publication number: 20160298658Abstract: A hydraulic steering system (1) is provided having a steering device (2) and a symmetrically acting steering motor (3), said steering device (2) comprising a supply port arrangement having a high pressure port (P) and a low pressure port (T), a working port arrangement having two working ports (L, R), a control valve (14), two working lines (18, 19) each connecting said control valve (14) with one of said working ports (L, R), and a measuring motor (23). Such a hydraulic steering system should show a comfortable steering behavior. To this end said measuring motor (23) is arranged in one of said working lines (18, 19).Type: ApplicationFiled: April 7, 2016Publication date: October 13, 2016Inventors: Soeren Liljenberg, Tom Rudolph, Jens Vester, Tom Tychsen, Poul Ennemark
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Publication number: 20160297473Abstract: A hydraulic steering system (1) is described comprising a first steering circuit (2a) and a second steering circuit (2b), each of said steering circuits (2a, 2b) comprising a steering device (3a, 3b) and a steering motor (4a, 4b) connected to said steering device (3a, 3b), each of said steering devices (3a, 3b) comprising a supply port arrangement having a high pressure port (Pa, Pb) and a low pressure port (Ta, Tb), a working port arrangement having two working ports (La, Ra; Lb, Rb) connected to said steering motor (4a, 4b), a control valve (5a, 5b), and a measuring motor (6a, 6b). Such a steering system should have a comfortable steering behavior. To this end in each of said steering devices (3a, 3b) said measuring motor (6a, 6b) is arranged in a working line (19a, 20b) between said control valve (5a, 5b) and one of said working ports (La, Ra; Lb, Rb).Type: ApplicationFiled: April 7, 2016Publication date: October 13, 2016Inventors: Soeren Liljenberg, Tom Rudolph, Tom Tychsen, Jens Vester, Poul Ennemark
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Patent number: 9242668Abstract: A hydraulic steering device (1) is described comprising a supply port arrangement having a supply port (P) and a tank port (T), a working port arrangement having two working ports (L, R), a main flow path (14) between the supply port (P) and the working port arrangement, a return flow path (16) between the working port arrangement and the tank port (T), flow meter means (15) being arranged in said main flow path (14), said flow meter means (15) comprising at least two flow meters (27, 28) and a flow meter valve means (30), said flow meter valve means (30) in a first operation mode connecting at least two flow meters (27, 28) in parallel and in a second operation mode making inactive at least one flow meter (27). Such a steering device should be operated comfortable for a driver.Type: GrantFiled: December 10, 2012Date of Patent: January 26, 2016Assignee: Danfoss Power Solutions APSInventors: Poul Ennemark, Peter Gade Peistrup, Tom Rudolph
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Publication number: 20150375782Abstract: A method for controlling steering of a vehicle (1) is provided, the vehicle (1) defining two or more steerable axes, and the vehicle (1) comprising a number of wheels (2), each of said wheels (2) being associated with one of said steerable axes in such a manner that steering of a given wheel (2) is obtained by steering the steerable axis associated therewith. The method comprises providing a first, a second and a third steering input. The first steering input defines a point of intersection between a virtual steering axis (4) and a longitudinal centre axis defined by the vehicle (1). The second steering input defines an angle between the virtual steering axis (4) and the longitudinal centre axis. The third steering input defines a position of a centre of rotation (5) along the virtual steering axis (4).Type: ApplicationFiled: June 25, 2015Publication date: December 31, 2015Inventors: Poul Ennemark, Morten Hoeck Petersen
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Publication number: 20150158523Abstract: A hydraulic steering device (1) is described comprising a supply port arrangement having a supply port (P) and a tank port (T), a working port arrangement having two working ports (L, R), a main flow path (14) between the supply port (P) and the working port arrangement, a return flow path (16) between the working port arrangement and the tank port (T), flow meter means (15) being arranged in said main flow path (14), said flow meter means (15) comprising at least two flow meters (27, 28) and a flow meter valve means (30), said flow meter valve means (30) in a first operation mode connecting at least two flow meters (27, 28) in parallel and in a second operation mode making inactive at least one flow meter (27). Such a steering device should be operated comfortable for a driver.Type: ApplicationFiled: December 10, 2012Publication date: June 11, 2015Inventors: Poul Ennemark, Peter Gade Peistrup, Tom Rudolph
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Publication number: 20150052888Abstract: A hydraulic system (1) is provided comprising a supply port arrangement (P, T), a working port arrangement (A, B), and a booster section (7), said supply port arrangement having at least a supply port (P), said booster section (7) being arranged between said supply port arrangement (P, T) and said working port arrangement (A, B). The operational possibilities of such a hydraulic system should be extended. To this end said working port arrangement comprises at least two working ports (A, B), flow direction changing means (9) are provided changing a flow direction through said working port arrangement and inactivating means (16) are provided inactivating or activating said booster section (7) for each flow direction.Type: ApplicationFiled: August 19, 2014Publication date: February 26, 2015Inventors: Joergen Mads Clausen, Christen Espersen, Leif Hansen, Brian Petersen, Joergen P. Todsen, Poul Ennemark, Knud Meldgaard Jensen, Tom Tychsen
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Patent number: 8534416Abstract: The invention concerns a hydraulic steering (1) with a steering unit (2) with feedback behavior, a steering motor (8) connected to the steering unit (2) via working pipes (L, R), a steering member (6) and a feedback suppression device (9), which is located in at least one working pipe (L, R). It is endeavored to change the feedback behavior of such a steering in a simple manner. For this purpose, the feedback suppression device (9) has a valve arrangement (10) with hydraulic control inlet (C).Type: GrantFiled: August 27, 2010Date of Patent: September 17, 2013Assignee: Sauer-Danfoss ApsInventors: Svend Erik Thomsen, Tom Rudolph, Poul Ennemark
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Patent number: 7997379Abstract: The invention concerns a hydraulic steering (1) with a steering valve (7) located between a supply connection arrangement (P, T) and a steering motor (2). It is endeavored to improve the safety of such a steering. For this purpose, the steering valve (7) has a hydraulic drive (9, 10) with a pilot valve arrangement (11) supplied by a pressure control valve (5), a stop valve (16) being located between the pressure control valve (5) and the pilot valve arrangement (11).Type: GrantFiled: March 6, 2007Date of Patent: August 16, 2011Assignee: Sauer-Danfoss ApsInventors: Anders Kryhlmand, Ove Pedersen, Niels Bjarne Hansen, Poul Ennemark
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Publication number: 20100320024Abstract: The invention concerns a hydraulic steering (1) with a steering unit (2) with feedback behaviour, a steering motor (8) connected to the steering unit (2) via working pipes (L, R), a steering member (6) and a feedback suppression device (9), which is located in at least one working pipe (L, R). It is endeavoured to change the feedback behaviour of such a steering in a simple manner. For this purpose, the feedback suppression device (9) has a valve arrangement (10) with hydraulic control inlet (C).Type: ApplicationFiled: August 27, 2010Publication date: December 23, 2010Applicant: Sauer-Danfoss ApSInventors: Svend Erik Thomsen, Tom Rudolph, Poul Ennemark
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Patent number: 7789190Abstract: The invention concerns a hydraulic steering (1) with a steering unit (2) with feedback behavior, a steering motor (8) connected to the steering unit (2) via working pipes (L, R), a steering member (6) and a feedback suppression device (9), which is located in at least one working pipe (L, R). It is endeavored to change the feedback behavior of such a steering in a simple manner. For this purpose, the feedback suppression device (9) has a valve arrangement (10) with hydraulic control inlet (C).Type: GrantFiled: March 6, 2007Date of Patent: September 7, 2010Assignee: Sauer-Danfoss ApsInventors: Svend Erik Thomsen, Tom Rudolph, Poul Ennemark
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Publication number: 20070221436Abstract: The invention concerns a hydraulic steering (1) with a steering unit (2) with feedback behaviour, a steering motor (8) connected to the steering unit (2) via working pipes (L, R), a steering member (6) and a feedback suppression device (9), which is located in at least one working pipe (L, R). It is endeavoured to change the feedback behaviour of such a steering in a simple manner. For this purpose, the feedback suppression device (9) has a valve arrangement (10) with hydraulic control inlet (C).Type: ApplicationFiled: March 6, 2007Publication date: September 27, 2007Applicant: Sauer-Danfoss ApSInventors: Svend Erik Thomsen, Tom Rudolph, Poul Ennemark
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Publication number: 20070221437Abstract: The invention concerns a hydraulic steering (1) with a steering valve (7) located between a supply connection arrangement (P, T) and a steering motor (2). It is endeavoured to improve the safety of such a steering. For this purpose, the steering valve (7) has a hydraulic drive (9, 10) with a pilot valve arrangement (11) supplied by a pressure control valve (5), a stop valve (16) being located between the pressure control valve (5) and the pilot valve arrangement (11).Type: ApplicationFiled: March 6, 2007Publication date: September 27, 2007Applicant: Sauer-Danfoss ApSInventors: Anders Kryhlmand, Ove Pedersen, Niels Hansen, Poul Ennemark
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Patent number: 6502600Abstract: The invention concerns a hydraulic line connection with a supply connection (2) having a pressure line and a return line, each ending at a connection valve (4,5), and with a safety valve (8) in a line between the pressure line and a consumer (1), said safety valve having a valve element (9), whose one side is acted upon by the pressure at the pressure connection (P) with the purpose of opening. The aim is to safely provide a connection of this kind in a simple way. For this purpose the other side of the valve element (9) is directly connected with the return line.Type: GrantFiled: November 19, 2001Date of Patent: January 7, 2003Assignee: Sauer-Danfoss Holding A/SInventors: Poul Ennemark, Søren Zaremba