Patents by Inventor Lennart Arvidsson

Lennart Arvidsson 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).

  • Publication number: 20240017810
    Abstract: A method of controlling a propeller drive assembly attachable to a hull of a marine vessel, said propeller drive assembly comprising a propeller drive unit and a housing for attachment to a hull of the marine vessel on an inside of the hull. The housing defines an inner space and an opening through which at least a portion of the propeller drive unit is movable into and out of the inner space. The propeller drive assembly comprises a suspension mechanism attached to the housing and configured to suspend the propeller drive unit, wherein the suspension mechanism is adapted to move the propeller drive unit between a stowed position and a deployed position.
    Type: Application
    Filed: July 13, 2023
    Publication date: January 18, 2024
    Inventors: Lennart ARVIDSSON, Johan Tell, Lars Johansson
  • Publication number: 20230415872
    Abstract: A propulsion drive assembly for a marine vessel is described. The propulsion drive assembly includes a propeller drive unit for carrying and driving at least one propeller, a housing for connection to a hull of the marine vessel, a suspension mechanism attached to the housing and configured to suspend the propeller drive unit, wherein the suspension mechanism is movable along a first longitudinal axis of the housing between a stowed position, in which the propeller drive unit is positioned inside the inner space of the housing, and a deployed position in which at least a portion of the propeller drive unit protrudes outside the housing through the first opening, and a gas supply device configured to supply gas into the inner space of the housing, the gas supply device comprising a gas pump or a controllable valve connectable to a source of pressurized gas.
    Type: Application
    Filed: June 27, 2023
    Publication date: December 28, 2023
    Applicant: VOLVO PENTA CORPORATION
    Inventors: Lennart ARVIDSSON, Peter GRANQVIST
  • Patent number: 11820478
    Abstract: A device and a method for controlling an electrical steering system in a marine vessel comprising at least one steerable propulsion unit, the electrical steering system comprising a main steering system (220; 220.1) that comprises a main electric motor (221; 221.1) and a main power source, e.g. a main battery (229; 229.1); a main steering angle sensor (226; 226.1) arranged to detect the steering angle of the propulsion unit; a main control unit (240; 240.1) arranged to steer the propulsion unit and to monitor the main steering system status; an auxiliary steering system comprising an auxiliary electric motor (231; 231.1) and an auxiliary battery (239; 239.1); and an auxiliary clutch (232; 232.1) arranged to connect a drive shaft of the auxiliary electric motor to the input shaft of the steering transmission (223; 223.1).
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: November 21, 2023
    Assignee: AB VOLVO PENTA
    Inventor: Lennart Arvidsson
  • Publication number: 20220348301
    Abstract: A device and a method for controlling an electrical steering system in a marine vessel comprising at least one steerable propulsion unit, the electrical steering system comprising a main steering system (220; 220.1) that comprises a main electric motor (221; 221.1) and a main power source, e.g. a main battery (229; 229.1); a main steering angle sensor (226; 226.1) arranged to detect the steering angle of the propulsion unit; a main control unit (240; 240.1) arranged to steer the propulsion unit and to monitor the main steering system status; an auxiliary steering system comprising an auxiliary electric motor (231; 231.1) and an auxiliary battery (239; 239.1); and an auxiliary clutch (232; 232.1) arranged to connect a drive shaft of the auxiliary electric motor to the input shaft of the steering transmission (223; 223.1).
    Type: Application
    Filed: January 18, 2019
    Publication date: November 3, 2022
    Applicant: AB VOLVO PENTA
    Inventor: Lennart ARVIDSSON
  • Publication number: 20220234712
    Abstract: A hybrid marine drive unit mounted to a transom. The drive unit includes a drive housing mounted on the transom, a propelling unit rotatable about a vertical axis and mounted to a lower surface of the drive housing, and a transmission with at least a vertical drive shaft located in the drive housing and extending into the propelling unit. The vertical drive shaft is arranged transmit drive torque from at least one of multiple sources of drive torque. The vertical drive shaft is operably connected to a first source of drive torque arranged within the drive housing, and the vertical drive shaft is operably connected to a horizontal output shaft extending into the drive housing through the transom. The horizontal output shaft is connectable to a second source of drive torque.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 28, 2022
    Applicant: VOLVO PENTA CORPORATION
    Inventor: Lennart ARVIDSSON
  • Publication number: 20220234708
    Abstract: A hybrid marine drive unit mounted to a transom. The drive unit includes a drive housing rigidly mounted on the transom, a propelling unit rotatable about a vertical axis and mounted to a lower surface of the drive housing, and a transmission with at least a vertical drive shaft located in the drive housing and extending into the propelling unit, which vertical drive shaft is arranged transmit drive torque from at least one of multiple sources of drive torque. The vertical drive shaft is operably connected to at least one first source of drive torque arranged within the drive housing, and the vertical drive shaft is operably connected to a horizontal output shaft extending into the drive housing through the transom.
    Type: Application
    Filed: January 25, 2022
    Publication date: July 28, 2022
    Applicant: VOLVO PENTA CORPORATION
    Inventor: Lennart ARVIDSSON
  • Publication number: 20220234707
    Abstract: A drive arrangement for a marine vessel. The drive arrangement includes an upper drive part configured to be mounted onto an outside of a transom of the marine vessel. A lower drive part is connected to the upper drive part to be fixed in a vertical direction in relation to the upper drive part. The lower drive part has a hydrodynamic configuration and is provided with at least one propeller. A transmission system is arranged to transfer a drive torque to the propeller from a drive source system connected to the transmission system. An outer surface of the upper drive part substantially is made up of a plurality of surface sections connected by one or more edges. Each of said surface sections has a shape corresponding to a so-called ruled surface that can be generated by the motion of a straight line.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 28, 2022
    Applicant: VOLVO PENTA CORPORATION
    Inventors: Lennart ARVIDSSON, Annika LINDQVIST
  • Patent number: 10800504
    Abstract: A propeller drive assembly for transferring a torque between an engine and at least one propeller of a water surface vessel includes a plurality of lubrication clients. The propeller drive assembly includes a first lubrication system arranged to house a first lubricant, dedicated for lubrication of at least one first of the lubrication clients, and a second lubrication system arranged to house a second lubricant, dedicated for lubrication of at least one second of the lubrication clients, the at least one second lubrication client includes a seal arranged to seal the second lubrication system from a body of water surrounding at least a portion of the propeller drive assembly, the second lubrication system being arranged to transport the second lubricant to the seal.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: October 13, 2020
    Assignee: AB VOLVO PENTA
    Inventors: Lennart Arvidsson, Lars Larsson
  • Publication number: 20200086962
    Abstract: A propeller drive assembly for transferring a torque between an engine and at least one propeller of a water surface vessel includes a plurality of lubrication clients. The propeller drive assembly includes a first lubrication system arranged to house a first lubricant, dedicated for lubrication of at least one first of the lubrication clients, and a second lubrication system arranged to house a second lubricant, dedicated for lubrication of at least one second of the lubrication clients, the at least one second lubrication client includes a seal arranged to seal the second lubrication system from a body of water surrounding at least a portion of the propeller drive assembly, the second lubrication system being arranged to transport the second lubricant to the seal.
    Type: Application
    Filed: December 2, 2015
    Publication date: March 19, 2020
    Applicant: AB VOLVO PENTA
    Inventors: Lennart ARVIDSSON, Lars LARSSON
  • Patent number: 9567052
    Abstract: Steering control system for a vessel including set of propulsion units including at least two propulsion units pivotally arranged in relation to the hull of the vessel for generating a driving thrust of the vessel in a desired direction, the control system including a steering control instrument for generating input signals for control of a desired route of the vessel a control unit complex controlling the angular position of the propulsion units, the control unit complex being arranged for receiving input signals from the steering control instrument, which input signals represents a general direction of movement of the vessel and thus a general desired angular position of each propulsion unit the control unit complex furthermore containing a feed forward pivot angle correction control block for each propulsion unit, which feed forward pivot angle correction blocks are arranged to generate desired angular positions of the propulsion units by adding a correction value to the general desired angular position of
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: February 14, 2017
    Assignees: AB VOLVO PENTA, CPAC SYSTEMS AB
    Inventors: Peter Torrångs, Lennart Arvidsson, Eva Maria Finn, Lina Ingrid Finn, Ebba Maria Finn
  • Patent number: 8271155
    Abstract: There is elucidated a safety system for a marine vessel. The vessel includes two engines coupled to propellers for propelling the vessel through water. The vessel is provided with a digital anchor in communication with the two engines for maintaining the vessel substantially at a defined location when the anchor is activated. The safety system includes a sensor assembly coupled to a data processing assembly for sensing a region of said water at least partially surrounding the vessel for detecting one or more persons present in the region and for modifying operation of the digital anchor in response to the one or more persons being detected. The invention is of advantage in that the digital anchor is capable of responding to the one or more persons being present in the water and thereby reducing a risk of injury or loss of life when the digital anchor is employed.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: September 18, 2012
    Assignee: AB Volvo Penta
    Inventor: Lennart Arvidsson
  • Patent number: 8267731
    Abstract: There is provided a breakaway safety system for a vessel. The vessel includes: (a) a hull; (b) one or more engine arrangements supported by the hull; and (c) one or more propeller extensions mounted to the hull and coupled to receive motive power from the one or more engine arrangements in operation.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: September 18, 2012
    Assignee: AB Volvo Penta
    Inventor: Lennart Arvidsson
  • Patent number: 8226812
    Abstract: A method in a corrosion protection system for protecting a first and a second metal part of a marine construction is provided. The method includes controlling electrical currents through electrical circuits, including respective anodes, the respective metal parts and an electrolyte, at least partly based on measured electrical potentials of the respective metal parts with an reference electrode as a ground reference. The method further includes repetitively performing the steps of controlling the electrical currents so as to be reduced or eliminated, measuring the electrical potentials while the electrical currents are maintained reduced or eliminated, and, after measuring the first and second electrical potentials, controlling the electrical currents so as to be increased or reestablished.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: July 24, 2012
    Assignee: AB Volvo Penta
    Inventors: Carl Nelvig, Lennart Arvidsson
  • Patent number: 8195381
    Abstract: There is elucidated a safety system for a marine vessel. The vessel includes two engines coupled to propellers for propelling the vessel through water. The vessel is provided with a digital anchor in communication with the two engines for maintaining the vessel substantially at a defined location when the anchor is activated. The safety system includes a sensor assembly coupled to a data processing assembly for sensing a region of said water at least partially surrounding the vessel for detecting one or more persons present in the region and for modifying operation of the digital anchor is response to the one or more persons being detected. The invention is of advantage in that the digital anchor is capable of responding to the one or more persons being present in the water and thereby reducing a risk of injury or loss of life when the digital anchor is employed.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: June 5, 2012
    Assignee: AB Volvo Penta
    Inventor: Lennart Arvidsson
  • Publication number: 20120095628
    Abstract: There is elucidated a safety system for a marine vessel. The vessel includes two engines coupled to propellers for propelling the vessel through water. The vessel is provided with a digital anchor in communication with the two engines for maintaining the vessel substantially at a defined location when the anchor is activated. The safety system includes a sensor assembly coupled to a data processing assembly for sensing a region of said water at least partially surrounding the vessel for detecting one or more persons present in the region and for modifying operation of the digital anchor is response to the one or more persons being detected. The invention is of advantage in that the digital anchor is capable of responding to the one or more persons being present in the water and thereby reducing a risk of injury or loss of life when the digital anchor is employed.
    Type: Application
    Filed: December 2, 2011
    Publication date: April 19, 2012
    Applicant: AB VOLVO PENTA
    Inventor: Lennart Arvidsson
  • Publication number: 20110028057
    Abstract: Steering control system (7) for a vessel (1) including set of propulsion units including at least two propulsion units (5,6) pivotally arranged in relation to the hull (2) of the vessel (1) for generating a driving thrust of said vessel (1) in a desired direction, said control system including a steering control instrument (10,11) for generating input signals for control of a desired route of the vessel a control unit complex (8,9) controlling the angular position of said propulsion units (5,6), said control unit complex being arranged for receiving input signals from said steering control instrument (10,11), which input signals represents a general direction of movement of the vessel and thus a general desired angular position of each propulsion unit said control unit complex furthermore containing a feed forward pivot angle correction control block for each propulsion unit, which feed forward pivot angle correction blocks are arranged to generate desired angular positions of the propulsion units by adding a
    Type: Application
    Filed: September 8, 2006
    Publication date: February 3, 2011
    Inventors: Peter Torrångs, Lennart Arvidsson
  • Publication number: 20110000794
    Abstract: A method in a corrosion protection system for protecting a first and a second metal part of a marine construction is provided. The method includes controlling electrical currents through electrical circuits, including respective anodes, the respective metal parts and an electrolyte, at least partly based on measured electrical potentials of the respective metal parts with an reference electrode as a ground reference. The method further includes repetitively performing the steps of controlling the electrical currents so as to be reduced or eliminated, measuring the electrical potentials while the electrical currents are maintained reduced or eliminated, and, after measuring the first and second electrical potentials, controlling the electrical currents so as to be increased or reestablished.
    Type: Application
    Filed: March 19, 2008
    Publication date: January 6, 2011
    Applicant: AB VOLVO PENTA
    Inventors: Carl Nelvig, Lennart Arvidsson
  • Publication number: 20100291816
    Abstract: There is provided a breakaway safety system for a vessel. The vessel includes: (a) a hull; (b) one or more engine arrangements supported by the hull; and (c) one or more propeller extensions mounted to the hull and coupled to receive motive power from the one or more engine arrangements in operation.
    Type: Application
    Filed: January 31, 2008
    Publication date: November 18, 2010
    Applicant: AB Volvo Penta
    Inventor: Lennart Arvidsson
  • Publication number: 20090276148
    Abstract: There is elucidated a safety system for a marine vessel. The vessel includes two engines coupled to propellers for propelling the vessel through water. The vessel is provided with a digital anchor in communication with the two engines for maintaining the vessel substantially at a defined location when the anchor is activated. The safety system includes a sensor assembly coupled to a data processing assembly for sensing a region of said water at least partially surrounding the vessel for detecting one or more persons present in the region and for modifying operation of the digital anchor is response to the one or more persons being detected. The invention is of advantage in that the digital anchor is capable of responding to the one or more persons being present in the water and thereby reducing a risk of injury or loss of life when the digital anchor is employed.
    Type: Application
    Filed: November 30, 2006
    Publication date: November 5, 2009
    Applicant: AB VOLVO PENTA
    Inventor: Lennart Arvidsson
  • Patent number: 7524219
    Abstract: Steering control system for a vessel including at least two propulsion units pivotally arranged in relation to the hull of the vessel for generating a driving thrust of the vessel in a desired direction, wherein each propulsion unit is moveable within a working volume defined for each propulsion unit and wherein the working volume for neighboring propulsion units of the at least two propulsion units have a common space, the control system including at least two separate control units each controlling an associated propulsion unit, and a steering control instrument for determining the desired angular position of the propulsion units, where each of the separate control units are arranged for receiving a first input signal from the steering control instrument for determining the desired angular position of its associated propulsion unit and second input signal(s) originating from the other separate control units, associated with neighboring propulsion units, which second input signal(s) indicating the status of
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: April 28, 2009
    Assignees: CPAC Systems AB, AB Volvo Penta
    Inventors: Peter Torrangs, Lennart Arvidsson