Patents Assigned to Nortek AS
  • Publication number: 20140126333
    Abstract: A watercraft angle of attack system includes sensors having a position locator; a heading sensor; a tilt sensor; an acoustic Doppler velocity sensor that measures velocity of the boat relative to a volume of water remote from the boat so as to reduce the boat-induced disturbance of the velocity in the volume; and a processor programmed to receive real time data from the sensors; and to compute and display angle of attack of the watercraft relative to the water.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 8, 2014
    Applicant: NORTEK AS
    Inventors: Atle Lohrmann, Torstein Kanstad Pedersen, Robert Hopkins, JR.
  • Patent number: 8223588
    Abstract: An AD2CP includes at least one transducer assembly emitting sets of slanted directional acoustic beams and receiving the echoes; and electronics that processes the echoes into depth cells and computes velocity in each depth cell. The AD2CP is configured so that each beam set has a profiling catenation, at least two of which are different, and the AD2CP is configured so that the emitting, receiving and processing operate contemporaneously.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: July 17, 2012
    Assignee: Nortek AS
    Inventors: Atle Lohrmann, R. Lee Gordon, Sven Nylund
  • Publication number: 20110149689
    Abstract: An AD2CP includes at least one transducer assembly emitting sets of slanted directional acoustic beams and receiving the echoes; and electronics that processes the echoes into depth cells and computes velocity in each depth cell. The AD2CP is configured so that each beam set has a profiling catenation, at least two of which are different, and the AD2CP is configured so that the emitting, receiving and processing operate contemporaneously.
    Type: Application
    Filed: March 1, 2011
    Publication date: June 23, 2011
    Applicant: NORTEK AS
    Inventors: Atle Lohrmann, R. Lee Gordon, Sven Nylund
  • Patent number: 7613072
    Abstract: A system for determining the directional properties of surface waves or internal waves of a fluid medium includes a sonar system having a plurality of transducers for generating respective, separate acoustic beams and receiving echoes from one or more range cells located substantially within the beams; and a computer program for determining the directional properties associated with the surface waves or internal waves from the received echoes, wherein the computer program determines along-beam velocities along the separate acoustic beams and combines the along-beam velocities to form an equivalent orbital velocity vector. The system is mounted on or in a sub surface buoy that can move or rotate during measurement and includes a motion sensor measuring six degrees of freedom to account for horizontal velocity and vertical displacement in the subsurface buoy mounted sonar system.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: November 3, 2009
    Assignee: Nortek, AS
    Inventors: Atle Lohrmann, Torstein Kanstad Pedersen
  • Publication number: 20080239869
    Abstract: A system for determining the directional properties of surface waves or internal waves of a fluid medium includes a sonar system having a plurality of transducers for generating respective, separate acoustic beams and receiving echoes from one or more range cells located substantially within the beams; and a computer program for determining the directional properties associated with the surface waves or internal waves from the received echoes, wherein the computer program determines along-beam velocities along the separate acoustic beams and combines the along-beam velocities to form an equivalent orbital velocity vector. The system is mounted on or in a sub surface buoy that can move or rotate during measurement and includes a motion sensor measuring six degrees of freedom to account for horizontal velocity and vertical displacement in the subsurface buoy mounted sonar system.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 2, 2008
    Applicant: NORTEK AS
    Inventors: Atle Lohrmann, Torstein Kanstad Pedersen
  • Patent number: 7352651
    Abstract: A system for determining the directional properties of surface waves or internal waves of a fluid medium includes a sonar system having a plurality of transducers for generating respective, separate acoustic beams and receiving echoes from one or more range cells located substantially within the beams; and a computer program executed by a processor for determining the directional properties associated with the surface waves or internal waves from the received echoes, wherein the computer program determines along-beam velocities along the separate acoustic beams and combines the along-beam velocities to form an equivalent orbital velocity vector.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: April 1, 2008
    Assignee: Nortek AS
    Inventors: Atle Lohrmann, Torstein Kanstad Pedersen