Patents by Inventor Per Slettedal

Per Slettedal 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: 10801279
    Abstract: A fingerboard latch arrangement includes an elongate support member, a latch which moves from a closed position into an open position and from the open position into the closed position, and an activation member which is connected to and which is movable longitudinally along the elongate support member. The activation member includes means to bring the latch from the closed position into the open position and from the open position into the closed position.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: October 13, 2020
    Assignee: MHWIRTH AS
    Inventor: Per Slettedal
  • Publication number: 20190153791
    Abstract: A fingerboard latch arrangement includes an elongate support member, a latch which moves from a closed position into an open position and from the open position into the closed position, and an activation member which is connected to and which is movable longitudinally along the elongate support member. The activation member includes means to bring the latch from the closed position into the open position and from the open position into the closed position.
    Type: Application
    Filed: July 7, 2017
    Publication date: May 23, 2019
    Applicant: MHWIRTH AS
    Inventor: PER SLETTEDAL
  • Patent number: 7437974
    Abstract: A rotation unit for a torque tong for making and/or breaking threaded connections between pipes and/or spinning pipes during screwing and/or unscrewing of pipes, primarily pipes used in petroleum production. The unit includes a fixed part and a rotary part arranged to grip a pipe to be rotated. The rotary part includes at least one movable gripping jaw arranged to be moved into engagement with the pipe. The fixed part includes at least one gripping cylinder arranged to move the gripping jaw to engage the pipe when the gripping jaw is operatively engaged with the gripping cylinder.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: October 21, 2008
    Assignee: Aker Kvaerner MH AS
    Inventors: Per Slettedal, Terje Egeland
  • Publication number: 20080250902
    Abstract: A rotation unit for a torque tong for making and/or breaking threaded connections between pipes and/or spinning pipes during screwing and/or unscrewing of pipes, primarily pipes used in petroleum production. The unit includes a fixed part and a rotary part arranged to grip a pipe to be rotated. The rotary part includes at least one movable gripping jaw arranged to be moved into engagement with the pipe. The rotary part includes toothing arranged to engage at least one chain, which chain is operatively connected to an actuator in order to move the chain and so impart rotary movement to the rotary part.
    Type: Application
    Filed: June 11, 2008
    Publication date: October 16, 2008
    Inventors: Per Slettedal, Terje Egeland
  • Patent number: 7387050
    Abstract: A rotation unit for a torque tong for making and/or breaking threaded connections between pipes and/or spinning pipes during screwing and/or unscrewing of pipes, primarily pipes used in petroleum production. The unit includes a fixed part and a rotary part arranged to grip a pipe to be rotated. The rotary part includes at least one movable gripping jaw arranged to be moved into engagement with the pipe. The rotary part includes toothing arranged to engage at least one chain, which is operatively connected to an actuator in order to move the chain and so impart rotary movement to the rotary part.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: June 17, 2008
    Assignee: Aker Kvaerner MH AS
    Inventors: Per Slettedal, Terje Egeland
  • Publication number: 20060196316
    Abstract: A rotation unit for a torque tong for making and/or breaking threaded connections between pipes and/or spinning pipes during screwing and/or unscrewing of pipes, primarily pipes used in petroleum production. The unit comprises a fixed part (41) and a rotary part (40) arranged to grip a pipe (70) to be rotated. The rotary part (40) comprises at least one movable gripping jaw (1, 2, 3) arranged to be moved into engagement with the pipe. The rotary part (40) comprises toothing (43) arranged to engage at least one chain (46, 47), which chain is operatively connected to an actuator (51) in order to move the chain and so impart rotary movement to the rotary part (40).
    Type: Application
    Filed: February 26, 2004
    Publication date: September 7, 2006
    Applicant: MARITIME HYDRAULICS AS
    Inventors: Per Slettedal, Terje Egeland
  • Publication number: 20060174729
    Abstract: A rotation unit for a torque tong for making and/or breaking threaded connections between pipes and/or spinning pipes during screwing and/or unscrewing of pipes, primarily pipes used in petroleum production. The unit comprises a fixed part and a rotary part (40) arranged to grip a (70) to be rotated. The rotary part (40) comprises at least one movable gripping jaw (1, 2, 3) arranged to be moved into engagement with the pipe (70). The fixed part (41) comprises at least one gripping cylinder (4, 5, 6) arranged to move the gripping jaw (1, 2, 3) to engage the pipe (70) when the gripping jaw is operatively engaged with the gripping cylinder (4, 5, 6).
    Type: Application
    Filed: February 26, 2004
    Publication date: August 10, 2006
    Inventors: Per Slettedal, Terje Egeland
  • Patent number: 6860694
    Abstract: A device for handling pipes or stands including a transportation carriage for transport of pipes or stands between a pipe storage and a place for use. The carriage includes picking columns, each having a first picking arm arranged to move substantially vertically. The arms are capable of lifting at least one horizontal pipe or stand from the pipe storage. The picking columns are also equipped with a respective second picking arm, capable of motion substantially vertically on the opposite side of the picking column, to hold the pipe or stand between the first and second picking arms. Also described are a storage device and a pipe erecting device to be used together with the transportation carriage.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: March 1, 2005
    Assignee: Maritime Hydraulics AS
    Inventor: Per Slettedal
  • Publication number: 20040217612
    Abstract: A gripping apparatus (1) for tubular goods is disclosed. The apparatus comprises two in respect of each other pivotable jaws (1a, 1b) and a working cylinder (8) that effects motion of the jaws (1a, 1b) in respect of a stationary housing (2). A counter block (7) is arranged between the jaws (1a, 1b) in the housing (2), and each jaw is by forced motion movably arranged in respect of the counter block (7). The moveable forced motion causes axial forth and back displacement simultaneous with the opening/closing of the jaws (1a, 1b). The working cylinder (8) is connected to each jaw (1a, 1b) via respective articulated connection forming pivot axis for the pivotable jaws.
    Type: Application
    Filed: August 28, 2003
    Publication date: November 4, 2004
    Inventor: Per Slettedal
  • Publication number: 20030170095
    Abstract: Device for handling pipes or stands, comprising a transportation carriage (2) for transport of pipes or stands (33) between a pipe storage (1, 101) and a place for use. The carriage comprises picking columns (12, 13), each having a first picking arm (19) arranged to move substantially vertical. The arms (19) are capable of lifting at least one horizontal pipe or stand (33) from the pipe storage (1, 101). The picking columns are also equipped with a respective second picking arm (18), capable of motion substantially vertically on the opposite side of the picking column (12, 13), to hold the pipe or stand (33) between the first and second picking arms (18, 19). Also described are a storage device (1) and a pipe erecting device (201) to be used together with the transportation carriage.
    Type: Application
    Filed: November 22, 2002
    Publication date: September 11, 2003
    Inventor: Per Slettedal
  • Patent number: 4822230
    Abstract: A pipe handling apparatus is disclosed, which is adapted for automated drilling operations. Drill pipes are manipulated between substantially horizontal and vertical positions, and the apparatus is used with a top mounted drilling device which is rotatable about a substantially horizontal axis. The apparatus comprises a strongback provided with clamps to hold and manipulate pipes. The strongback is at one end portion rotatably connected to the same axis as the drilling device. The strongback moves up or down with the drilling device. A brace unit is attached to the strongback to be rotatable about a second axis spaced apart from said first axis. The brace unit has one end portion rotatable about a third axis.
    Type: Grant
    Filed: October 20, 1987
    Date of Patent: April 18, 1989
    Assignee: Maritime Hydraulics A.S.
    Inventor: Per Slettedal