Patents by Inventor Anders Hoglund

Anders Hoglund 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: 9988952
    Abstract: A combustion engine includes a cylinder head including a controllable engine valve configured to open/close a combustion chamber in the combustion engine, a valve actuator operatively connected with and configured to displace the engine valve, and a closed pressure fluid circuit, wherein the valve actuator is arranged in the closed pressure fluid circuit. The combustion engine includes a cylinder head chamber that is included in the closed pressure fluid circuit and that is delimited by the cylinder head and a cylinder head mantle, by the valve actuator including a pneumatic pressure fluid circuit with an outlet opening that is in fluid communication with the cylinder head chamber, and by the cylinder head chamber including a hydraulic liquid drainage valve, wherein a drainage conduit stretches from the hydraulic liquid drainage valve to a hydraulic liquid vessel of the combustion engine for draining hydraulic liquid accumulated in the cylinder head chamber.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: June 5, 2018
    Assignee: FREEVALVE AB
    Inventors: Anders Hoglund, Urban Carlson, Christian Von Koenigsegg
  • Patent number: 9964006
    Abstract: An actuator for axial displacement of an object, includes an actuator piston and an actuator piston rod, wherein the piston is displaceable in the axial direction, and a hydraulic circuit including a liquid filled chamber, a first end of the actuator piston rod being displaceable in the axial direction within the liquid filled chamber, wherein an axially extending recess mouth in the liquid filled chamber is arranged to receive the first end. The actuator piston rod in the area of the first end presents a cylindrical envelope surface, and the recess presents a cylindrical inner surface having a matching shape, wherein the actuator includes a passage extending between the recess and liquid filled chamber when the cylindrical envelope surface and the cylindrical inner surface are located in overlapping configuration, wherein the passage presents at a braking overlap section a cross section area that decreases as a function of increasing overlap.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: May 8, 2018
    Assignee: FREEVALVE AB
    Inventor: Anders Hoglund
  • Publication number: 20180119583
    Abstract: Disclosed is an actuator including a cylinder volume having a first portion, and an actuator piston disc displaceable in the cylinder between inactive and active positions, an inlet channel between a pressure fluid inlet and the first portion of the cylinder volume, a first inlet valve body in the inlet channel, an outlet channel between the first portion of the cylinder volume and a pressure fluid outlet, and an outlet valve body in the outlet channel. The slave piston is displaceable in a bore between inactive and active positions. The first inlet valve body includes a seat valve body having an inactive position closing the inlet channel, the slave piston, in moving from inactive to active positions, rams the first inlet valve body, displacing it to an active position at which the inlet channel is open, the outlet valve body being connected to and jointly displaceable with the slave piston.
    Type: Application
    Filed: April 15, 2016
    Publication date: May 3, 2018
    Inventors: Anders HOGLUND, Urban CARLSON
  • Publication number: 20180119829
    Abstract: Disclosed is a multi-way valve including a control pressure channel, a first control fluid channel between a first opening and the control pressure channel, a second control fluid channel between a second opening and the control pressure channel, a valve body in the first and second control fluid channels, and an electrically controlled device having a drive member and an armature. The armature moves axially according to the drive member between inactive and active positions. Movement of the armature from inactive to active displaces the valve body arrangement to an active position where the first control fluid channel is closed and the second control fluid channel is open. The device further includes a drive body connected to the armature and a spring between the armature and drive body. The drive body abuts the valve body and the spring in a compressed state when the armature is in active position.
    Type: Application
    Filed: April 15, 2016
    Publication date: May 3, 2018
    Inventors: Anders HOGLUND, Urban CARLSON
  • Publication number: 20180100413
    Abstract: Disclosed is an actuator for axial displacement of an object, including a cylinder volume having a first portion, and an actuator piston disc displaceable in the axial direction in the cylinder volume between inactive and active positions, an inlet channel between a pressure fluid inlet and the first portion of the cylinder volume, a first inlet valve body in the inlet channel, an outlet channel between the first portion of the cylinder volume and a pressure fluid outlet, and an outlet valve body in the outlet channel. The slave piston is displaceable in a bore, the slave piston displacing the first inlet valve body to an active position, and interacting with an opening connecting the bore and a control pressure channel, the opening having a first flow area with the slave piston in its inactive position and a larger second flow area with the slave piston in its active position.
    Type: Application
    Filed: April 15, 2016
    Publication date: April 12, 2018
    Inventors: Anders HOGLUND, Urban CARLSON
  • Patent number: 9885261
    Abstract: Disclosed is an actuator for axial displacement of an object, including an actuator piston disc displaceable in a cylinder volume, an inlet channel, a first inlet valve body arranged in the inlet channel, a second inlet valve body operatively connected to the actuator piston disc and arranged in the inlet channel, an outlet channel and an outlet valve body arranged therein. The actuator includes an electrically controlled pilot valve communicating a first control pressure to the first inlet valve body via a first control pressure channel and communicating a second control pressure to the outlet valve body via a second control pressure channel. The pilot valve places itself in either a resting state or an active state.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: February 6, 2018
    Assignee: FREEVALVE AB
    Inventor: Anders Hoglund
  • Publication number: 20170306860
    Abstract: Disclosed is a combustion engine and method for engine braking therein including an intake air channel having a first pressure, a first inlet valve between the intake air channel and the cylinder volume, an exhaust air channel having a second pressure, a first outlet valve between the cylinder volume and the exhaust air channel, and a storage reservoir having a third pressure higher than the first and second pressures, the storage reservoir being arranged in controllable fluid communication with the cylinder volume. The method takes place during two-stroke cycle and includes: displacing the piston from upper dead centre (UDC) towards lower dead centre (LDC), keeping the first inlet valve open during at least part of the travel from UDC to LDC, displacing the piston from LDC towards UDC, and keeping the fluid communication between the storage reservoir and cylinder volume open during at least a part of such travel.
    Type: Application
    Filed: October 12, 2015
    Publication date: October 26, 2017
    Inventors: Anders HÖGLUND, Urban CARLSON
  • Patent number: 9778014
    Abstract: A method and position sensor assembly for determining a mutual position between a first object and a second object. The position sensor assembly includes a first body, a coil, a control unit, and a sensor circuit, the first body being reciprocally displaceable in the axial direction in relation to the coil. The sensor circuit includes in turn a comparator connected to a first branch including the coil, a power switch, and a measuring resistance coupled in series with each other.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: October 3, 2017
    Assignee: FREEVALVE AB
    Inventor: Anders Hoglund
  • Publication number: 20170037750
    Abstract: A combustion engine includes an engine valve arranged to selectively open/close a combustion chamber of the engine, a cylinder head adjacent the combustion chamber, arranged to guide a valve stem of the engine valve, the engine valve being axially displaceable relative to the cylinder head between the combustion chamber closed position and the combustion chamber fully opened position, and a valve spring retainer connected to the valve stem. The valve spring retainer partly delimits a gas spring volume, which is in fluid communication with an adjacent gas volume via a port when the engine valve is in the combustion chamber closed position, and which is separated from the adjacent gas volume when the engine valve is in the combustion chamber fully open position, the port being open during at least 25% of the maximal stroke of the engine valve and being closed due to a displacement of the engine valve.
    Type: Application
    Filed: April 15, 2015
    Publication date: February 9, 2017
    Inventors: Anders HOGLUND, Urban CARLSON, Christian KOENIGSEGG, Lars IVARSSON
  • Publication number: 20160369666
    Abstract: Disclosed is an actuator for axial displacement of an object, including an actuator piston disc displaceable in a cylinder volume, an inlet channel, a first inlet valve body arranged in the inlet channel, a second inlet valve body operatively connected to the actuator piston disc and arranged in the inlet channel, an outlet channel and an outlet valve body arranged therein. The actuator includes an electrically controlled pilot valve communicating a first control pressure to the first inlet valve body via a first control pressure channel and communicating a second control pressure to the outlet valve body via a second control pressure channel. The pilot valve places itself in either a resting state or an active state.
    Type: Application
    Filed: July 7, 2014
    Publication date: December 22, 2016
    Inventor: Anders HOGLUND
  • Publication number: 20160320209
    Abstract: A method and a position sensor assembly for determining a mutual position between a first object (1) and a second object (2). The position sensor assembly includes a first body (3), a second body (4), a control unit, and a sensor circuit, the first body (3) and the second body (4) being mutually displaceable in relation to each other and the second body (4) presenting an unambiguous inductance value for each mutual position between the first body (3) and the second body (4). The sensor circuit includes in its turn a comparator connected to a first branch including the second body (4), a power switch and a measuring resistance connected in series with each other.
    Type: Application
    Filed: December 19, 2014
    Publication date: November 3, 2016
    Inventor: Anders HOGLUND
  • Publication number: 20160237866
    Abstract: A combustion engine includes, a first controllable engine valve (8) arranged to selectively open/close a combustion chamber (7) included in the combustion engine (1), and a gas handling system arranged to drive the first engine valve (8), which gas handling system includes a closed pneumatic pressure fluid circuit, wherein the closed pressure fluid circuit includes, coupled in series with each other, a compressor (31) and a valve actuator (10) that are operatively connected to the first engine valve (8). The combustion engine is characterized by the gas handling system further including a gas accumulator (38) that is connected with the closed pressure fluid circuit via at least one gas accumulator conduit (39), which includes a controllable valve (40). A gas handling system for pneumatic control of a valve actuator is also described.
    Type: Application
    Filed: October 8, 2014
    Publication date: August 18, 2016
    Applicant: Freevalve AB
    Inventors: Anders HOGLUND, Urban CARLSON, Christian VON KOENIGSEGG
  • Publication number: 20160237864
    Abstract: A combustion engine includes, a cylinder head including a controllable first engine valve arranged to selectively open/close a combustion chamber included in the combustion engine, a first valve actuator operatively connected to the first engine valve, which first valve actuator includes at least one inlet opening for pressure fluid and at least one outlet opening for pressure fluid, and a closed pressure fluid circuit, wherein the first valve actuator is arranged in the closed pressure fluid circuit. The combustion engine further includes a cylinder head chamber that forms part of the closed pressure fluid circuit and that is delimited by the cylinder head and at least a first cylinder head mantle, wherein the at least one outlet opening of the first valve actuator is in fluid communication with the cylinder head chamber. A mantle assembly for a cylinder head of a combustion engine is also described.
    Type: Application
    Filed: October 8, 2014
    Publication date: August 18, 2016
    Applicant: Freevalve AB
    Inventors: Anders HOGLUND, Urban CARLSON, Christian VON KOENIGSEGG
  • Publication number: 20160230618
    Abstract: A combustion engine includes a cylinder head including a controllable engine valve configured to open/close a combustion chamber in the combustion engine, a valve actuator operatively connected with and configured to displace the engine valve, and a closed pressure fluid circuit, wherein the valve actuator is arranged in the closed pressure fluid circuit.
    Type: Application
    Filed: October 8, 2014
    Publication date: August 11, 2016
    Inventors: Anders HOGLUND, Urban CARLSON, Christian VON KOENIGSEGG
  • Patent number: 9347466
    Abstract: An actuator, including a cylinder, an actuator piston displacably arranged in the cylinder, a pressure fluid circuit having a channel mouthing in the cylinder, an indirectly electrically controlled first valve body, arranged in the channel for controlling a flow of a pressure fluid in the channel, and a second valve body, arranged in or at the channel to open and close the channel, the second valve body being a member fixedly connected to the actuator piston, and the first valve body and the second valve body being arranged in series with each other in the channel. The actuator further includes an electrically controlled three-way valve that is arranged to alternately open for a pressure fluid flow from a high pressure source and a pressure fluid flow from a low pressure source, chosen pressure fluid flow being arranged to act against and admit displacement of the first valve body.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: May 24, 2016
    Assignee: FREEVALVE AB
    Inventor: Anders Hoglund
  • Publication number: 20160108777
    Abstract: An actuator for axial displacement of a gas exchange valve of a combustion engine is configured to be connected to a pressure fluid source and a pressure fluid sink, respectively, and to be driven by a gaseous pressure fluid and includes an actuator piston including an actuator piston disc and an actuator piston rod projecting therefrom in the axial direction, a cylinder volume, the disc separating the cylinder volume into a first part and a second part and being displaceable back and forth in the axial direction in the cylinder volume between an inactive position and an active position, the first part being configured for controllable fluid communication with the pressure fluid source and the pressure fluid sink, respectively, and a hydraulic circuit includes a chamber, the free end of the rod being arranged therein, wherein the rod is displaceable back and forth in the axial direction in a channel.
    Type: Application
    Filed: October 7, 2015
    Publication date: April 21, 2016
    Inventor: Anders Hoglund
  • Publication number: 20160040564
    Abstract: An actuator for axial displacement of an object, includes an actuator piston and an actuator piston rod, wherein the piston is displaceable in the axial direction, and a hydraulic circuit including a liquid filled chamber, a first end of the actuator piston rod being displaceable in the axial direction within the liquid filled chamber, wherein an axially extending recess mouth in the liquid filled chamber is arranged to receive the first end. The actuator piston rod in the area of the first end presents a cylindrical envelope surface, and the recess presents a cylindrical inner surface having a matching shape, wherein the actuator includes a passage extending between the recess and liquid filled chamber when the cylindrical envelope surface and the cylindrical inner surface are located in overlapping configuration, wherein the passage presents at a braking overlap section a cross section area that decreases as a function of increasing overlap.
    Type: Application
    Filed: March 27, 2014
    Publication date: February 11, 2016
    Inventor: Anders HOGLUND
  • Patent number: 9244170
    Abstract: A visual display includes hidden reference illuminators adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input to gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. Also provides are a system and method for determining a gaze point of an eye watching a visual display that includes reference illuminators. The determination of the gaze point may be based on an ellipsoidal cornea model.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: January 26, 2016
    Assignee: Tobii Technology AB
    Inventors: Peter Blixt, Anders Hoglund, Bengt Rehnstrom, John Elvesjö, Mattias Kuldkepp
  • Patent number: 9228459
    Abstract: An actuator for axially displacing an object includes an actuator piston disc and an actuator piston rod, which together form an actuator piston, a cylinder volume, the actuator piston disc dividing the cylinder volume into a first part and second part and being displaceable in the cylinder volume between an inactive and active position, a pressure fluid circuit arranged for controllable fluid communication with the first part, and a first hydraulic circuit including a liquid-filled space, the actuator piston rod being disposed to be axially displaced in relation to the liquid-filled space in connection with axial displacement of the actuator piston disc in the cylinder volume. The actuator piston includes a second hydraulic circuit, the liquid-filled space being in fluid communication with an inner cavity in the second hydraulic circuit when the actuator piston disc is in the inactive position, the inner cavity partly being delimited by a positioning piston.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: January 5, 2016
    Assignee: FREEVALVE AB
    Inventor: Anders Hoglund
  • Publication number: 20150247718
    Abstract: A method and position sensor assembly for determining a mutual position between a first object and a second object. The position sensor assembly includes a first body, a coil, a control unit, and a sensor circuit, the first body being reciprocally displaceable in the axial direction in relation to the coil. The sensor circuit includes in turn a comparator connected to a first branch including the coil, a power switch, and a measuring resistance coupled in series with each other.
    Type: Application
    Filed: June 25, 2013
    Publication date: September 3, 2015
    Applicant: FREEVALVE AB
    Inventor: Anders Hoglund