Patents by Inventor Uwe Bernhard Pascal Stein

Uwe Bernhard Pascal Stein 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).

  • Patent number: 9052033
    Abstract: A valve assembly suitable for regulating the flow of fluid between a working chamber of a fluid-working machine and a fluid manifold. The valve assembly comprises a valve body comprising a valve seat, a fluid passage extending through the valve body, and a travelling member comprising a valve member, which valve member is operable between an open position in which the valve member is spaced apart from the valve seat and fluid can flow through the fluid passage and a closed position in which the valve member is in sealing contact with the valve seat preventing fluid from flowing through the fluid passage. The valve assembly defining a fluid flow path passing, in a first fluid flow mode, between the valve member and the valve seat, and into the fluid passage.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: June 9, 2015
    Assignee: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: Niall James Caldwell, Uwe Bernhard Pascal Stein, William Hugh Salvin Rampen
  • Patent number: 9033309
    Abstract: The invention relates to a valve actuator (2), comprising a magnetic core (6) with an interspace (8) and at least one bifurcating branch (7), at least one variable magnetic field generating device (16), at least one permanent magnetic field generating device (13) and at least one movable magnetic component (12), wherein the bifurcating branch (7) defines a first region (4) and a second region (5) of said magnetic core (6).
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: May 19, 2015
    Assignees: Sauer Danfoss Aps, Artemis Intelligent Power Ltd.
    Inventors: William Hugh Salvin Rampen, Niall James Caldwell, Uwe Bernhard Pascal Stein
  • Patent number: 9010104
    Abstract: A fluid-working machine has a working chamber of cyclically varying volume, high and low pressure manifolds, and high and low pressure valves for regulating the flow of fluid between the working chamber and the high and low pressure manifolds respectively. A controller actively controls at least one said valve to determine the net displacement of working fluid of the working chamber on a cycle by cycle basis. At least one said valve is a variable timing valve and the controller causes the valve to open or close at a time determined taking into account one or more properties of the performance of the fluid working machine measured during an earlier cycle of working chamber volume.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: April 21, 2015
    Assignee: Artemis Intelligent Power Limited
    Inventors: William Hugh Salvin Rampen, Uwe Bernhard Pascal Stein, Niall James Caldwell, Stephen Michael Laird, Pierre Robert Joly, Michael Richard Fielding, Daniil Sergeevich Dumnov
  • Patent number: 9003954
    Abstract: A variable displacement fluid working machine includes an inward ring and an outward ring, one of the inward ring and the outward ring including a rotatable ring cam coupled to a drive shaft, the other including a plurality of radially extending piston cylinders circumferentially spaced around the respective ring. The outward ring has first and second axially spaced structural members and a plurality of demountable blocks demountably retainable therebetween, the demountable blocks having either piston cylinders or ring cam segments. The demountable blocks are removable radially to facilitate maintenance and repair and to facilitate radial access to the inward ring.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: April 14, 2015
    Assignee: Artemis Intelligent Power Limited
    Inventors: Stephen Hugh Salter, William Hugh Salvin Rampen, Uwe Bernhard Pascal Stein, Robert George Fox
  • Patent number: 8870553
    Abstract: A fluid working machine comprising a controller and a working chamber, an electronically controllable low pressure valve associated therewith and a fast high pressure valve associated therewith, characterized in that the working chamber has associated therewith a slow high pressure valve for controlling the connection of the working chamber to a secondary high pressure manifold. A fluid working machine according to the invention may be operated to rotate its shaft to a certain position, for example to allow easy maintenance of a wind turbine generator.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: October 28, 2014
    Assignee: Artemis Intelligent Power Limited
    Inventors: Jack Samuel Lavender, Michael Richard Fielding, Niall James Caldwell, Uwe Bernhard Pascal Stein, Stephen Michael Laird
  • Patent number: 8757583
    Abstract: In a fluid-working machine having a high-pressure line and a working chamber, a valve arrangement is arranged to control fluid flow from the high-pressure line to the working chamber. The valve arrangement comprises a main valve having a valve element arranged to provide sealing contact with a valve seat, and an auxiliary valve comprising an electromagnetically-movable valve member for equalising pressure on either side of the main valve by placing the working chamber in direct fluid communication with the high-pressure line. The electromagnetically-movable valve member may comprise a spool valve member or a poppet valve member.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: June 24, 2014
    Assignee: Artemis Intelligent Power Limited
    Inventor: Uwe Bernhard Pascal Stein
  • Patent number: 8657589
    Abstract: A hydraulic machine has at least one working chamber (11) of cyclically changing volume, and low-pressure and high pressure valves (15, 13) to control the connection of each of the at least one working chambers to low-pressure and high-pressure lines (16, 14) respectively. A method of operating the machine includes holding the low-pressure valve means (15) closed during at least an entire cycle of the chamber (11), starting at minimum chamber volume, such that gas dissolved in liquid in the chamber is released therefrom during an expansion of the chamber volume and re-dissolved during a reduction thereof.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: February 25, 2014
    Assignee: Artemis Intelligent Power Limited
    Inventors: Uwe Bernhard Pascal Stein, Niall James Caldwell, William Hugh Salvin Rampen
  • Patent number: 8602381
    Abstract: An electronically actuatable valve assembly having a primary face seating valve, including a primary valve member, and a secondary valve, including a secondary valve member. The secondary valve opens before the primary valve to equilibrate pressure across the primary valve member and thereby facilitate opening of the primary valve member. The secondary valve is coupled to an armature which moves from a first position to a second position, in use, attracted by an electromagnet. The coupling between the armature and the secondary valve is configured to enable the armature to begin to move from the first position without movement of the secondary valve.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: December 10, 2013
    Assignee: Artemis Intelligent Power Limited
    Inventors: Uwe Bernhard Pascal Stein, Gordon Paul Voller, Stephen Michael Laird
  • Publication number: 20130149171
    Abstract: A fluid-working machine for a renewable energy generation device, the fluid-working machine comprising a ring cam and a plurality of working chambers, the ring cam having an annular working surface extending around an axis of rotation of the ring cam, the annular working surface defining a plurality of waves, each working chamber having a piston, each piston in operative engagement with the ring cam working surface, the ring cam and working chambers being mounted to rotate relative to each other, cycles of working chamber volume being thereby coupled to rotation of the ring cam relative to the working chambers, characterised in that the individual waves of the ring cam working surface have an asymmetric profile.
    Type: Application
    Filed: August 17, 2010
    Publication date: June 13, 2013
    Applicant: Artemis Intelligent Power Limited
    Inventors: Niall James Caldwell, Daniil Sergeevich, William Hugh Salvin Rampen, Alasdair Ian Fletcher Robertson, Uwe Bernhard Pascal Stein, Robert George Fox
  • Patent number: 8348627
    Abstract: The present invention provides a hydraulic pump for use in driving a load with a control modulation system which modulates a primary control signal in order to accommodate variations in secondary changeable parameters which require control at a higher frequency or have a lower latency.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: January 8, 2013
    Assignee: Artemis Intelligent Power Ltd
    Inventors: William Hugh Salvin Rampen, Uwe Bernhard Pascal Stein, Michael Richard Fielding, Niall Caldwell
  • Publication number: 20120312158
    Abstract: A ring cam for a fluid-working machine is formed from a plurality of segments. The segments comprise a leading cooperating formation which has a piston facing surface which forms part of the working surface, at a trailing end, and which is recessed from the working surface at a leading end, and a trailing cooperating formation which has a piston facing surface which forms part of the working surface at a leading end, and which is recessed from the working surface at a trailing end. The segments having piston facing surfaces which are in compressive stress such as to partially or fully compensate for tensile stress arising from the action of rollers in use. The segments form a wavelike cam surface and attachment means are provided, through the working surface, on whichever of the leading or trailing surfaces thereof is subject to lowest forces from pistons in use.
    Type: Application
    Filed: July 19, 2011
    Publication date: December 13, 2012
    Applicant: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: William Hugh Salvin Rampen, Uwe Bernhard Pascal Stein, Robert George Fox, Stephen Hugh Salter
  • Publication number: 20120260765
    Abstract: A ring cam for a fluid-working machine is formed from a plurality of segments. The segments have piston facing surfaces together defining a working surface of the fluid-working machine. The segments comprise a leading cooperating formation which has a piston facing surface which forms part of the working surface, at a trailing end, and which is recessed from the working surface at a leading end, and a trailing cooperating formation which has a piston facing surface which forms part of the working surface at a leading end, and which is recessed from the working surface at a trailing end. The cooperating formations interlock and rollers are thereby handed over smoothly from one segment to the next irrespective of slight variations in alignment due to manufacturing tolerance or wear.
    Type: Application
    Filed: July 19, 2011
    Publication date: October 18, 2012
    Applicant: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: Robert George Fox, William Hugh Salvin Rampen, Uwe Bernhard Pascal Stein
  • Patent number: 8191518
    Abstract: A valvetrain control arrangement for an internal combustion engine. A fluid-working machine (1) has working chambers (3) of cyclically varying volume, each connected to a piston actuator (4) which is capable of moving an intake or exhaust valve in the internal combustion engine. The engine crankshaft (2) drives a crankshaft of the fluid-working machine at the same speed as the engine. Each working chamber (3) is linked to a low-pressure manifold (7) by a venting valve (6), the venting valve being normally open but electromagnetically closable by a signal from an electronic sequencing means (8) which operates in timed relationship to the engine crankshaft phase.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: June 5, 2012
    Assignee: Artemis Intelligent Power Limited
    Inventors: Uwe Bernhard Pascal Stein, Niall James Caldwell, William Hugh Salvin Rampen
  • Publication number: 20120063919
    Abstract: A fluid-working machine has a working chamber of cyclically varying volume, high and low pressure manifolds, and high and low pressure valves for regulating the flow of fluid between the working chamber and the high and low pressure manifolds respectively. A controller actively controls at least one said valve to determine the net displacement of working fluid of the working chamber on a cycle by cycle basis. At least one said valve is a variable timing valve and the controller causes the valve to open or close at a time determined taking into account one or more properties of the performance of the fluid working machine measured during an earlier cycle of working chamber volume.
    Type: Application
    Filed: February 23, 2011
    Publication date: March 15, 2012
    Applicant: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: William Hugh Salvin Rampen, Uwe Bernhard Pascal Stein, Niall James Caldwell, Stephen Michael Laird, Pierre Robert Joly, Michael Richard Fielding, Daniil Sergeevich Dumnov
  • Publication number: 20120060685
    Abstract: A variable displacement fluid working machine includes an inward ring and an outward ring, one of the inward ring and the outward ring including a rotatable ring cam coupled to a drive shaft, the other including a plurality of radially extending piston cylinders circumferentially spaced around the respective ring. The outward ring has first and second axially spaced structural members and a plurality of demountable blocks demountably retainable therebetween, the demountable blocks having either piston cylinders or ring cam segments. The demountable blocks are removable radially to facilitate maintenance and repair and to facilitate radial access to the inward ring.
    Type: Application
    Filed: February 23, 2011
    Publication date: March 15, 2012
    Applicant: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: Stephen Hugh Salter, William Hugh Salvin Rampen, Uwe Bernhard Pascal Stein, Robert George Fox
  • Publication number: 20120060684
    Abstract: The present invention relates to a fluid working machine comprising a controller and a working chamber, an electronically controllable low pressure valve associated therewith and a fast high pressure valve associated therewith, characterised in that the working chamber has associated therewith a slow high pressure valve for controlling the connection of the working chamber to a secondary high pressure manifold. A fluid working machine according to the invention may be operated to rotate its shaft to a certain position, for example to allow easy maintenance of a wind turbine generator.
    Type: Application
    Filed: February 23, 2011
    Publication date: March 15, 2012
    Applicant: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: Jack Samuel Lavender, Michael Richard Fielding, Niall James Caldwell, Uwe Bernhard Pascal Stein, Stephen Michael Laird
  • Publication number: 20120057991
    Abstract: In a method of detecting a fault in a fluid-working machine including a plurality of working chambers of cyclically varying volume, each working chamber is operable to displace a volume of working fluid which is selectable for each cycle of working chamber volume to carry out a working function responsive to a received demand signal. An output parameter of the fluid working machine, which is responsive to the displacement of working fluid by one or more of the working chambers to carry out the working function, is measured. It is determined whether the measured output parameter fulfils at least one acceptable function criterion, taking into account the previously selected net displacement of working fluid by a working chamber during a cycle of working chamber volume to carry out the working function.
    Type: Application
    Filed: February 23, 2011
    Publication date: March 8, 2012
    Applicant: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: William Hugh Salvin Rampen, Niall James Caldwell, Michael Richard Fielding, Stephen Michael Laird, Uwe Bernhard Pascal Stein, John Tearlach Campbell
  • Publication number: 20120045327
    Abstract: A fluid-working machine for a renewable energy generation device, the fluid-working machine comprising a ring cam and a plurality of working chambers, the ring cam having an annular working surface extending around an axis of rotation of the ring cam, the annular working surface defining a plurality of waves, each working chamber having a piston, each piston in operative engagement with the ring cam working surface, the ring cam and working chambers being mounted to rotate relative to each other, cycles of working chamber volume being thereby coupled to rotation of the ring cam relative to the working chambers, characterised in that the individual waves of the ring cam working surface have an asymmetric profile.
    Type: Application
    Filed: February 18, 2011
    Publication date: February 23, 2012
    Applicant: Artemis Intelligent Power Limited
    Inventors: Niall James Caldwell, Daniil Sergeevich Dumnov, William Hugh Salvin Rampen, Alasdair Ian Fletcher Robertson, Uwe Bernhard Pascal Stein, Robert George Fox
  • Publication number: 20120042771
    Abstract: An electronically controlled valve includes a valve member moveable between a first position and a second position. A valve member moving mechanism is operable to receive energy from a fluid-working machine crankshaft, or other rotating shaft, and to provide a valve member moving force to urge the valve member from the first position to the second position using the received energy. Thus, the energy used for movement of the valve against a pressure gradient is derived from the crankshaft. Energy received from the crankshaft can be stored and used subsequently to urge the valve member from the first position, allowing the valve to function despite timing differences between the availability of energy from the crankshaft and the requirement for energy to move the valve member.
    Type: Application
    Filed: November 15, 2010
    Publication date: February 23, 2012
    Applicant: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: Fergus Robert Mcintyre, Michael Richard Fielding, Uwe Bernhard Pascal Stein
  • Patent number: 8108111
    Abstract: A variable transmission comprises a first fluid working machine (1) for connection to a prime mover (2), a second fluid working machine (5) for connection to a mechanical load (6) and a fluid system linking the first and second working machines, the fluid system having a high-pressure side (3) and a low-pressure side (4) each connected to both said first and said second fluid working machines (1, 5), a fluid accumulator (7) on the high-pressure side, a means to admit fluid from the reservoir to the low-pressure side and a pressure control valve to maintain the correct pressure in the low-pressure side, wherein the second fluid working machine (5) includes chambers of variable volume having electronically controllable valves such that each of said chambers has pumping, motoring and idling modes of operation, and the second fluid working machine (5) is operable to both source fluid to and sink fluid from each of said high-pressure side (3) and said low-pressure side (4).
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: January 31, 2012
    Assignee: Artemis Intelligent Power Limited
    Inventors: Uwe Bernhard Pascal Stein, Michael Richard Fielding