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).
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Patent number: 10801279Abstract: 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: GrantFiled: July 7, 2017Date of Patent: October 13, 2020Assignee: MHWIRTH ASInventor: Per Slettedal
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Publication number: 20190153791Abstract: 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: ApplicationFiled: July 7, 2017Publication date: May 23, 2019Applicant: MHWIRTH ASInventor: PER SLETTEDAL
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Patent number: 7437974Abstract: 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: GrantFiled: February 26, 2004Date of Patent: October 21, 2008Assignee: Aker Kvaerner MH ASInventors: Per Slettedal, Terje Egeland
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Publication number: 20080250902Abstract: 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: ApplicationFiled: June 11, 2008Publication date: October 16, 2008Inventors: Per Slettedal, Terje Egeland
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Patent number: 7387050Abstract: 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: GrantFiled: February 26, 2004Date of Patent: June 17, 2008Assignee: Aker Kvaerner MH ASInventors: Per Slettedal, Terje Egeland
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Publication number: 20060196316Abstract: 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: ApplicationFiled: February 26, 2004Publication date: September 7, 2006Applicant: MARITIME HYDRAULICS ASInventors: Per Slettedal, Terje Egeland
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Publication number: 20060174729Abstract: 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: ApplicationFiled: February 26, 2004Publication date: August 10, 2006Inventors: Per Slettedal, Terje Egeland
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Patent number: 6860694Abstract: 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: GrantFiled: January 12, 2001Date of Patent: March 1, 2005Assignee: Maritime Hydraulics ASInventor: Per Slettedal
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Publication number: 20040217612Abstract: 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: ApplicationFiled: August 28, 2003Publication date: November 4, 2004Inventor: Per Slettedal
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Publication number: 20030170095Abstract: 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: ApplicationFiled: November 22, 2002Publication date: September 11, 2003Inventor: Per Slettedal
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Patent number: 4822230Abstract: 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: GrantFiled: October 20, 1987Date of Patent: April 18, 1989Assignee: Maritime Hydraulics A.S.Inventor: Per Slettedal