Patents by Inventor Alv Repstad

Alv Repstad 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).

  • Submerged fin for wave energy conversion
    Patent number: 12454934
    Abstract: An energy conversion system includes a power takeoff system, a fin connected to the power takeoff system, and a control system on board the fin. The fin is submerged below a surface of the sea, and the fin is configured to use subsurface wave motions to extract energy.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: October 28, 2025
    Assignee: Schlumberger Technology Corporation
    Inventors: Erling Tambs, Jarle Hardeland Oevsthus, Alv Repstad
  • SUBMERGED FIN FOR WAVE ENERGY CONVERSION
    Publication number: 20240376857
    Abstract: An energy conversion system includes a power takeoff system, a fin connected to the power takeoff system, and a control system on board the fin. The fin is submerged below a surface of the sea, and the fin is configured to use subsurface wave motions to extract energy.
    Type: Application
    Filed: September 12, 2022
    Publication date: November 14, 2024
    Inventors: Erling Tambs, Jarle Hardeland Oevsthus, Alv Repstad
  • Heave compensation winches
    Patent number: 10081988
    Abstract: Various hoisting systems with heave compensation are provided. In one embodiment, an apparatus includes a winch having a rotatable drum and a heave compensation system with both active and passive drive input devices. The heave compensation system can be coupled to the rotatable drum so that the active and passive drive input devices can each be used to drive rotation of the rotatable drum in response to heaving motion of the winch. Additional systems, devices, and methods are also disclosed.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: September 25, 2018
    Assignee: CAMERON SENSE AS
    Inventors: Håkon F. Bergan, Bård H. Kaasin, Joe R. Berry, Alv Repstad
  • Wireline riser tensioner system and method
    Patent number: 9995093
    Abstract: A wireline riser tensioner system includes a set of tensioning units arranged about a first well with at least one tensioning cable connected to a first and a second tension ring of the first and second wells, respectively. Both wells can be serviced using the same set of tensioning units. The at least one tensioning cable is routed through a plurality of sheaves. If not being serviced, the first or the second well might serve as an anchor.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: June 12, 2018
    Assignee: Cameron International Corporation
    Inventors: Harald Langenes, Alv Repstad, Jean Philippe Huchon, Lasse Hammersland
  • HEAVE COMPENSATION WINCHES
    Publication number: 20150361736
    Abstract: Various hoisting systems with heave compensation are provided. In one embodiment, an apparatus includes a winch having a rotatable drum and a heave compensation system with both active and passive drive input devices. The heave compensation system can be coupled to the rotatable drum so that the active and passive drive input devices can each be used to drive rotation of the rotatable drum in response to heaving motion of the winch. Additional systems, devices, and methods are also disclosed.
    Type: Application
    Filed: June 13, 2014
    Publication date: December 17, 2015
    Inventors: Håkon F. Bergan, Bård H. Kaasin, Joe R. Berry, Alv Repstad