Patents by Inventor Lennart Claesson

Lennart Claesson 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: 10495052
    Abstract: A wave energy converter includes a buoyant body and an acceleration tube attached thereto forming a working cylinder. Upper and lower openings in the acceleration tube allow water flow between the working cylinder and the water in which the acceleration tube is at least partially submerged. A working piston is reciprocable in the working cylinder and an energy converting device collects energy from the movements of the working piston relative to the buoyant body. A mooring system maintains the wave energy converter within a desired anchoring area and includes at least a first fastening device mounted on the buoyant body for attachment of a first mooring line to the buoyant body and a second fastening device mounted on the buoyant body for attachment of a second mooring line to the buoyant body. The mooring lines include first and second line sections, respectively, and at least one buoyant element attached therebetween.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 3, 2019
    Assignee: W4P Waves4Power AB
    Inventors: Filip Alm, Lennart Claesson
  • Patent number: 10328996
    Abstract: A connection substation for a plurality of wave energy converters being part of a wave power station includes a transformer and a connecting device for electrically connecting input power cables to a common output cable. The connection substation has a buoyant body portion providing a buoyancy force and a fastening device for securing at least one mooring line connected to an anchor, wherein the at least one fastening device is disposed in the vicinity of the bottom end of the connection substation at a distance from an upper end of the buoyant body portion, wherein the at least one connecting device is disposed in a waterproof compartment in the connection substation, and wherein each of the plurality of input power cables are run so that at least a portion of the cable extends up to a level at least 2 meters above the design waterline of the connection substation.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: June 25, 2019
    Assignee: W4P WAVES4POWER AB
    Inventors: Filip Alm, Lennart Claesson
  • Publication number: 20180363621
    Abstract: A wave energy converter includes a buoyant body and an acceleration tube attached thereto forming a working cylinder. Upper and lower openings in the acceleration tube allow water flow between the working cylinder and the water in which the acceleration tube is at least partially submerged. A working piston is reciprocable in the working cylinder and an energy converting device collects energy from the movements of the working piston relative to the buoyant body. A mooring system maintains the wave energy converter within a desired anchoring area and includes at least a first fastening device mounted on the buoyant body for attachment of a first mooring line to the buoyant body and a second fastening device mounted on the buoyant body for attachment of a second mooring line to the buoyant body. The mooring lines include first and second line sections, respectively, and at least one buoyant element attached therebetween.
    Type: Application
    Filed: March 31, 2016
    Publication date: December 20, 2018
    Inventors: Filip ALM, Lennart CLAESSON
  • Publication number: 20180312224
    Abstract: A connection substation for a plurality of wave energy converters being part of a wave power station includes a transformer and a connecting device for electrically connecting input power cables to a common output cable. The connection substation has a buoyant body portion providing a buoyancy force and a fastening device for securing at least one mooring line connected to an anchor, wherein the at least one fastening device is disposed in the vicinity of the bottom end of the connection substation at a distance from an upper end of the buoyant body portion, wherein the at least one connecting device is disposed in a waterproof compartment in the connection substation, and wherein each of the plurality of input power cables are run so that at least a portion of the cable extends up to a level at least 2 meters above the design waterline of the connection substation.
    Type: Application
    Filed: October 24, 2016
    Publication date: November 1, 2018
    Inventors: Filip ALM, Lennart CLAESSON
  • Patent number: 6140712
    Abstract: A wave energy converter includes a buoyant body (11) and an acceleration tube (14) dependent from and attached to the buoyant body (11) and having an upper end near the buoyant body and a lower end remote from the buoyant body. A section of the acceleration tube intermediate the upper and lower ends of the acceleration tube defines a working cylinder (16) and openings in the acceleration tube (14) above and below the working cylinder (16) allow substantially unobstructed water flow between the working cylinder and a body of water in which the acceleration tube is immersed. A working piston (17) is reciprocable in the working cylinder. An energy-absorbing device (18, 19, S) includes paired resiliently extendable hose pumps (18, 19) operated by the working piston (17). One end of each hose pump within a pair is attached to the operating piston (17) on opposite sides thereof, and the other end is anchored to the unit which consists of the buoyant body (11) and the acceleration tube (14).
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: October 31, 2000
    Assignee: IPS Interproject Service AB
    Inventors: Gunnar Fredriksson, Bengt-Olov Sjostrom, Lennart Claesson, Jan Forsberg