Patents by Inventor Ole Gunnar Dahlhaug
Ole Gunnar Dahlhaug 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).
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Patent number: 8657559Abstract: A method and device for reducing wear in a water turbine (1) comprising a turbine housing (2) and an impeller (4), and where between the turbine housing (2) and the impeller (4) is arranged a seal (16, 18), and where the method comprises supplying cleaned water to the seal (16, 18).Type: GrantFiled: March 20, 2009Date of Patent: February 25, 2014Assignee: Dynavec ASInventor: Ole Gunnar Dahlhaug
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Patent number: 8616833Abstract: A method and a device to counteract wear about a guide vane (16) from a particle bearing drive water, the guide vane (16) being arranged in a guide vane housing (14) in a water turbine (1), and where the method comprises: —routing a supply channel (36) for water cleaner than the drive water to the attachment point area between the guide vane (16) and the guide vane housing (14); and—leading water cleaner than the drive water to flow through a slit (28) where the slit (28) at least partly encircles the guide vane (16).Type: GrantFiled: July 9, 2010Date of Patent: December 31, 2013Assignee: Dynavec ASInventor: Ole Gunnar Dahlhaug
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Patent number: 8405238Abstract: A wind turbine power production system with a closed loop hydrostatic transmission system for the transfer of mechanical energy from a wind turbine rotor to an electric generator. The hydrostatic transmission system comprises a closed loop with a pump and a motor connected by tubes or pipes. The assembly of the wind turbine rotor and the pump is arranged for rotating about a vertical axis above a swivel arranged for transferring fluid to and from the motor, fluid reservoir and other components arranged below the swivel.Type: GrantFiled: October 29, 2008Date of Patent: March 26, 2013Assignee: Chapdrive ASInventor: Ole Gunnar Dahlhaug
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Patent number: 8398360Abstract: A method and a device for counteracting wear from particle bearing drive water in a runner (4) in a water turbine (1), the runner (4) comprising a runner hub (16) and a vane (18), or a runner hub (16), a vane (18) and a runner band (20), the vane (18) being attached to the runner hub (16) in a first attachment area (22) and to the runner band (20) in a second attachment area (24), and where the method comprises: —routing a supply channel (40) for water cleaner than the drive water to at least the first attachment area (22) or the second attachment area (24) and—leading water cleaner than the drive water to flow over at least a portion of the vane (18) surface.Type: GrantFiled: July 12, 2010Date of Patent: March 19, 2013Assignee: Dynavec ASInventor: Ole Gunnar Dahlhaug
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Patent number: 8342809Abstract: A device for a runner (1) for a fluid machine comprising a runner hub (2) and a number of blades (4) distributed around the centre axis (8) of the runner (1), each blade (4) being detachably connected to the runner (1).Type: GrantFiled: November 17, 2008Date of Patent: January 1, 2013Assignee: Dynavec ASInventors: Reza Hezari, Ole Gunnar Dahlhaug
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Publication number: 20120121386Abstract: A method and a device to counteract wear about a guide vane (16) from a particle bearing drive water, the guide vane (16) being arranged in a guide vane housing (14) in a water turbine (1), and where the method comprises: —routing a supply channel (36) for water cleaner than the drive water to the attachment point area between the guide vane (16) and the guide vane housing (14); and—leading water cleaner than the drive water to flow through a slit (28) where the slit (28) at least partly encircles the guide vane (16).Type: ApplicationFiled: July 9, 2010Publication date: May 17, 2012Applicant: Dynavec ASInventor: Ole Gunnar Dahlhaug
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Publication number: 20120121387Abstract: A method and a device for counteracting wear from particle bearing drive water in a runner (4) in a water turbine (1), the runner (4) comprising a runner hub (16) and a vane (18), or a runner hub (16), a vane (18) and a runner band (20), the vane (18) being attached to the runner hub (16) in a first attachment area (22) and to the runner band (20) in a second attachment area (24), and where the method comprises: —routing a supply channel (40) for water cleaner than the drive water to at least the first attachment area (22) or the second attachment area (24) and —leading water cleaner than the drive water to flow over at least a portion of the vane (18) surface.Type: ApplicationFiled: July 12, 2010Publication date: May 17, 2012Applicant: Dynavec ASInventor: Ole Gunnar Dahlhaug
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Publication number: 20110033304Abstract: A device for a runner (1) for a fluid machine comprising a runner hub (2) and a number of blades (4) distributed around the centre axis (8) of the runner (1), each blade (4) being detachably connected to the runner (1).Type: ApplicationFiled: November 17, 2008Publication date: February 10, 2011Applicant: Dynavec ASInventors: Reza Hezari, Ole Gunnar Dahlhaug
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Publication number: 20110014049Abstract: A method and device for reducing wear in a water turbine (1) comprising a turbine housing (2) and an impeller (4), and where between the turbine housing (2) and the impeller (4) is arranged a seal (16, 18), and where the method comprises supplying cleaned water to the seal (16, 18).Type: ApplicationFiled: March 20, 2009Publication date: January 20, 2011Applicant: Dynavec ASInventor: Ole Gunnar Dahlhaug
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Patent number: 7863767Abstract: A turbine (2) driven electric power production system (1),—said turbine (2) arranged for being driven by a fluid (3) having a fluid speed (v) varying in time,—said turbine (2) connected to a hydrostatic displacement pump (6) further connected to a hydrostatic displacement motor (8) as part of a closed loop hydrostatic transmission system (7),—said motor (8) arranged for driving an electrical generator (9) supplying AC power (10) at a frequency (fg) near a given desired frequency (fdes), characterized by a closed loop system arranged for controlling a volumetric displacement (13) of the hydrostatic motor (8), comprising—a fluid speed meter (11m) arranged for producing a speed signal (11s) representing a speed (v) of said fluid (3), and—a rotational speed meter (12m) arranged for providing a rotational speed signal (12s) representing a rotational speed measurement (?) of said turbine (2), —a motor displacement control system (15) for continuously receiving said speed signal (11s) and said rotational speed signaType: GrantFiled: October 31, 2006Date of Patent: January 4, 2011Assignee: Chapdrive ASInventors: Peter Chapple, Ole Gunnar Dahlhaug, Per Olav Haarberg
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Publication number: 20100320770Abstract: A wind turbine power production system with a closed loop hydrostatic transmission system for the transfer of mechanical energy from a wind turbine rotor to an electric generator. The hydrostatic transmission system comprises a closed loop with a pump and a motor connected by tubes or pipes. The assembly of the wind turbine rotor and the pump is arranged for rotating about a vertical axis above a swivel arranged for transferring fluid to and from the motor, fluid reservoir and other components arranged below the swivel.Type: ApplicationFiled: October 29, 2008Publication date: December 23, 2010Applicant: CHAPDRIVE ASInventor: Ole Gunnar Dahlhaug
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Publication number: 20100270809Abstract: A wind turbine power production system (1) with a closed loop hydrostatic transmission system (10) for the transfer of mechanical energy from a wind turbine rotor (2) to an electric generator (20) where the hydrostatic transmission system (10) comprises a closed loop with a pump (11) and a motor (12) connected by tubes or pipes (13, 14). The assembly of the hydrostatic transmission system (10) and the turbine rotor (2) is arranged to rotate about a vertical axis (8), and the rotating motor (12) is arranged on or near the ground in the tower (4).Type: ApplicationFiled: November 7, 2008Publication date: October 28, 2010Applicant: CHAPDRIVE ASInventor: Ole Gunnar Dahlhaug
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Publication number: 20090140522Abstract: A turbine (2) driven electric power production system (1), —said turbine (2) arranged for being driven by a fluid (3) having a fluid speed (v) varying in time, —said turbine (2) connected to a hydrostatic displacement pump (6) further connected to a hydrostatic displacement motor (8) as part of a closed loop hydrostatic transmission system (7), —said motor (8) arranged for driving an electrical generator (9) supplying AC power (10) at a frequency (fg) near a given desired frequency (fdes), characterized by a closed loop system arranged for controlling a volumetric displacement (13) of the hydrostatic motor (8), comprising —a fluid speed meter (11m) arranged for producing a speed signal (11s) representing a speed (v) of said fluid (3), and —a rotational speed meter (12m) arranged for providing a rotational speed signal (12s) representing a rotational speed measurement (?) of said turbine (2), —a motor displacement control system (15) for continuously receiving said speed signal (11s) and said rotational speedType: ApplicationFiled: October 31, 2006Publication date: June 4, 2009Inventors: Peter Chapple, Ole Gunnar Dahlhaug, Per Olav Haarberg