Patents Assigned to Danfoss Power Solutions APS
  • Patent number: 10953915
    Abstract: 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: Grant
    Filed: May 3, 2018
    Date of Patent: March 23, 2021
    Assignee: DANFOSS POWER SOLUTIONS APS
    Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
  • Patent number: 10953914
    Abstract: 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: Grant
    Filed: May 3, 2018
    Date of Patent: March 23, 2021
    Assignee: Danfoss Power Solutions ApS
    Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
  • Patent number: 10895328
    Abstract: A hydraulic steering unit is described comprising a housing (1) and a non-return valve (2) having a ball (3) and a valve seat (4) at an end of a channel (5) in the housing (1), wherein a movement of the ball (3) away from the valve seat (4) is limited by an abutment (7) in the channel (5). Such a steering unit should have a non-return valve which can be produced with low costs. To this end the abutment (7) extends transversely through the channel.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: January 19, 2021
    Assignee: DANFOSS POWER SOLUTIONS APS
    Inventors: Nils E. Sevelsted, Ylnghui Liu
  • Patent number: 10862382
    Abstract: A hydraulic steering arrangement is described comprising a steering unit (1), a steering wheel and a steering wheel angle sensor (3) detecting an angle of rotation between the steering wheel and the steering unit (1). Such a steering arrangement should have a simple construction. To this end the steering wheel angle sensor (3) comprises a transmitter/receiver arrangement fixed to the steering unit (1) and a target assembly (4) which is rotateably fixed to the steering wheel by means of a connection geometry (9) and comprises a passive reaction arrangement.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: December 8, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventors: Ole Falck Sorensen, Jorgen Krusborg, Soren Winkler Rasmussen, Caspar Pilkington Laugesen
  • Patent number: 10843725
    Abstract: A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (P) connected to a main flow path (2) and a tank port (T) connected to a tank flow path (3), a first working port arrangement having a first left working port (L1) connected to a first left working flow path (4) and a first right working port (R1) connected to a first right working flow path (5), a variable first left orifice (A2L) connected to the main flow path (2) and to the first left working flow path (4), a variable first right orifice (A2R) connected to the main flow path (2) and to the first right working flow path (5), a variable second left orifice (A3L) connected to the first left working flow path (4) and to the tank flow path (3), a variable second right orifice (A3R) connected to the first right working flow path (5) and to the tank flow path (3), and a second working port arrangement having a second left working port (12) connected to a second left working flow path (9) and a second right work
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: November 24, 2020
    Assignee: DANFOSS POWER SOLUTIONS APS
    Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
  • Patent number: 10830616
    Abstract: A steering wheel angle sensor is described comprising a first part and a second part, wherein the first part and the second part are moveable relative to each other in rotational direction and the first part comprises at least one first signal generating means (1, 2) generating a sine signal (x2, x5) in response to an angular position of the second part and at least one second signal generating means (3, 4) generating a cosine signal (y2, y5) in response to the angular position of the second part. Such a steering wheel angle sensor should allow a simple fault detection. To this end fault detecting means (9) are provided, wherein the fault detecting means (9) form a sum of the square of the sine signal (x2, x5) and the square of the cosine signal (y2, y5) and generates a fault signal, if the sum is not within a predetermined range.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: November 10, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventors: Ole Falck Sorensen, Jorgen Krusborg, Soren Winkler Rasmussen, Dennis Gregersen
  • Patent number: 10766524
    Abstract: A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (P) connected to a main flow path (5) and a tank port (T) connected to a tank flow path (6), a working port arrangement having a left working port (L) connected to a left working flow path (7) and a right working port (R) connected to a right working flow path (8), a bridge arrangement (14) of variable neutral open orifices, said bridge arrangement (14) comprising a first left orifice (A2L) connected to a main flow path (5) and to the left working flow path (7), a first right orifice (A2R) connected to a main flow path (5) and to the right working flow path (8), a second left orifice (A3L) connected to the left working flow path (7) and to the tank flow path (6), and a second right orifice (A3R) connected to the right working flow path (8) and to the tank flow path (6). Such a steering unit has a good steering behavior but can function as a closed-center solution.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: September 8, 2020
    Assignee: DANFOSS POWER SOLUTIONS APS
    Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
  • Patent number: 10730548
    Abstract: A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (P) connected to a main flow path (2) and a tank port (T) 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 bridge arrangement (21) of variable orifices (A2L, A3L, A2R, A3R) having a first left orifice (A2L) connected to the main flow path (2) and to the left working flow path (4), a first right orifice (A3R) connected to the main flow path (2) and to the right working flow path (5), a second left orifice (A3L) connected to the left working flow path (4) and to the tank flow path (3), and a second right orifice (A3R) connected to the right working flow path (5) and to the tank flow path (3). Such a steering unit allows steering a vehicle with low energy consumption.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: August 4, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
  • Patent number: 10723378
    Abstract: 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: Grant
    Filed: May 3, 2018
    Date of Patent: July 28, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
  • Patent number: 10717464
    Abstract: 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: Grant
    Filed: May 3, 2018
    Date of Patent: July 21, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
  • Patent number: 10670055
    Abstract: A hydraulic system (1) is provided comprising a group of at least two valves (2a, 2b, 2c) connected to a bus (8), each of said valves (2a, 2b, 2c) comprising a primary memory (9a, 9b, 9c) for storing a set of parameters of the valve (2a, 2b, 2c). The service work of such a hydraulic system should be facilitated. To this end each valve (2a, 2b, 2c) comprises a secondary memory (10a, 10b, 10c) storing said set of parameters of a different valve (2b, 2c, 2a) of said group.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: June 2, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventors: Henrik Hjorth, Erik Christensen
  • Patent number: 10640144
    Abstract: A hydraulic steering arrangement is shown having a steering unit and two working ports each of which being connected to the steering unit by a working line (3), wherein an anti jerk valve (9) is arranged in each working line (3), the anti jerk valve (9) having a valve element (12) being loaded in opening direction by the pressure in the working line (3) and in closing direction by restoring means (17). A vehicle equipped with such a steering arrangement should have a good comfort. To this end the valve element (12) is loaded in closing direction by the pressure in the working line (3) via delay means (21).
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: May 5, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventors: Ole Soerensen, Abdul Karim Rahimzai
  • Patent number: 10625775
    Abstract: A hydraulic steering arrangement (2) is described having a main flow path (8) with a flow meter (9) and an amplification flow path (10) opening into the main flow path (8) at a connecting point (11) located between the flow meter (9) and a working port arrangement (L, R). Such a steering arrangement should have in a simple way a large flow of the hydraulic fluid to the working port arrangement. To this end pressure increasing means (17) are arranged in the main flow path (8) upstream the connecting point (11).
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 21, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventors: Ole Soerensen, Abdul Karim Rahimzai, Niels Arbjerg
  • Patent number: 10619677
    Abstract: A shaft (1) is shown comprising a shaft section (2) having an axis (3), a tooth geometry (4) at least at one end of said shaft section, said tooth geometry (4) having a first end (5) opposite said shaft section (2) and a second end (6) adjacent said shaft section (2), a number of teeth (7) distributed in circumferential direction around said axis (3), a bottom curve (9) between adjacent teeth (7), and an outer tooth curve (12), said bottom curve (9) having a positive slope from said first end (5) towards said shaft section (2) and a negative slope (14) at said second end (6). In such a shaft wear should be made as small as possible. To this end said bottom curve (9) comprises a section having a concave bottom curvature (15) between said positive slope and said negative slope.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: April 14, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventor: Vagn Soennichsen
  • Patent number: 10611402
    Abstract: A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (P) connected to a main flow path (2) and a tank port (T) connected to a tank flow path (3), 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 (15) of variable orifices having a first left orifice (A2L) connected to the main flow path (2) and to a left connecting point (16) at the left working flow path (9), a first right orifice (A2R) connected to the main flow path (2) and to a right connecting point (17) at the right working flow path (10), a second left orifice (A3L) connected to the left connecting point (16) at the left working flow path (9) and to the tank flow path (3), and a second right orifice (A3R) connected to the right connecting point (17) at the right working flow path (10) and to the tank flow path (3).
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: April 7, 2020
    Assignee: Danfoss Power Solutions ApS
    Inventors: Niels Arbjerg, Charles Anthony Bates, Poul Ennemark, Mogens Frederiksen, Casper Mikael Olesen
  • Patent number: 10308280
    Abstract: Hydraulic steering (1) is disclosed comprising a high pressure port (P), a low pressure port (T), two working ports (CL, CR), a manual steering section (3), and a steering valve section having a steering valve 5 and a hydraulic driving arrangement (6) adjusting hydraulically a position of said steering valve. A change from automatic steering to manual steering should be reliably ensured when the manual steering section is directly influenced by a driver. To this end, a switching valve (11) is provided, which is actuatable between a first position in which said driving arrangement (6) is supplied with hydraulic fluid under pressure, and a second position in which a supply of hydraulic fluid to said driving arrangement (6) is interrupted, wherein said switching valve (11) is hydraulically actuated into said second position by a pressure generated upon actuating of said manual steering section (3).
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: June 4, 2019
    Assignee: Danfoss Power Solutions ApS
    Inventors: Morten Hoeck Petersen, Thomas Træger Hansen, Thomas Bauer, Niels Bjarne Hansen, Jeroen Hinse
  • Patent number: 10215200
    Abstract: An electrohydraulic control valve (1) comprising a control valve element (2) displaceable in a first direction by a pressure in a first pressure chamber (5) and in a second direction by a pressure in a second pressure chamber (6). Each pressure chamber (5, 6) is connected to a line between a high pressure port (PP) and a low pressure port (PT) via a magnetic valve (11, 12). Each magnetic valve (11, 12) is a three-way valve and comprises a first valve seat (17) and a second valve seat (18). A space (19) between the first valve seat (17) and the second valve seat (18) is connected to the pressure chamber (5, 6) and a first valve element (20) positioned outside the space (19) cooperates with the first valve seat (17) and a second valve element (21) positioned outside the space (19) cooperates with the second valve seat (18).
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: February 26, 2019
    Assignee: Danfoss Power Solutions ApS
    Inventors: Dirk Wroblewski, Kjeld Ravn
  • Patent number: 10174854
    Abstract: A hydraulic overpressure valve (1) is provided comprising a valve housing (2), a valve seat (3) located in said valve housing and having a seat center and a seat center axis (4), a cone element (5) movable relatively to said valve seat (3), said cone element (5) having a cone (6) protruding at least partly into said valve seat (3) and having a cone center axis (4), and force generating means acting on said cone element (5) in a direction towards said valve seat (3). Such a hydraulic overpressure valve should be operated with low noise. To this end said cone (6) is movable along a path of movement in which said cone center axis is kept outside said seat center axis (4).
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: January 8, 2019
    Assignee: Danfoss Power Solutions ApS
    Inventors: Per Bonde, Mogens Frederiksen, Niels Bjarne Hansen, Nils E. Sevelsted, Bendt Porskrog, Helle Bonde Rasmussen
  • Patent number: 10161425
    Abstract: 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: Grant
    Filed: April 7, 2016
    Date of Patent: December 25, 2018
    Assignee: Danfoss Power Solutions ApS
    Inventors: Soeren Liljenberg, Tom Rudolph, Jens Vester, Tom Tychsen, Poul Ennemark
  • Patent number: D839803
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: February 5, 2019
    Assignee: Danfoss Power Solutions ApS
    Inventor: Ravi Kanbargi