Patents Assigned to Depro AS
  • Pipe clamp provided with a tension gauge and use of a tension gauge on a pipe clamp
    Patent number: 9939085
    Abstract: A pipe damp is for joining submerged pipes provided with flanges. The pipe clamp includes at least two segments connected by at least one hinge. The pipe clamp is further provided with a threaded bolt arranged to open and close the pipe clamp. The pipe clamp is provided with at least one strain gauge arranged to measure the tension of the pipe clamp around the flange of the pipe when the pipe clamp is dosed by the threaded bolt. A method is for tensioning a pipe clamp. Use of strain gauges to measure the tension of a pipe clamp is provided.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: April 10, 2018
    Assignee: Depro AS
    Inventors: Rune Oyen, Odd Rune Holland, Arne Hodne
  • Device for compensation of wave influenced distance variations on a drill string
    Patent number: 9359836
    Abstract: Device (11) for compensation of wave induced distance variations to a drill string between a floating drill rig and a seabed-fixed installation, comprising an extendable cylinder/piston unit (12) which is arranged to be able to compensate when the load exceeds a pre-determined threshold value. The cylinder (13) of the cylinder/piston unit (12) comprises a non-compressible liquid at both sides of a piston (14) positioned substantially in the middle of the cylinder (13) and is prevented from fluid communication with the surroundings. A control valve (19) is arranged to activate the device (11) by opening for fluid communication between the cylinder (13) and a gas containing accumulator (17) when the load exceeds a predetermined threshold value. The device is characterized by being a complete, self-supported unit comprising cylinder (13), piston (14) on a piston rod (15), accumulator (17), control valve (19) and drainage tank (20).
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: June 7, 2016
    Assignee: DEPRO AS
    Inventors: Tommy Andre Hognestad Liland, Kjetil Naesgaard
  • Pipe Clamp Provided with a Tension Gauge and Use of a Tension Gauge on a Pipe Clamp
    Publication number: 20150226352
    Abstract: A pipe damp is for joining submerged pipes provided with flanges. The pipe clamp includes at least two segments connected by at least one hinge. The pipe clamp is further provided with a threaded bolt arranged to open and close the pipe clamp. The pipe clamp is provided with at least one strain gauge arranged to measure the tension of the pipe clamp around the flange of the pipe when the pipe clamp is dosed by the threaded bolt. A method is for tensioning a pipe clamp. Use of strain gauges to measure the tension of a pipe clamp is provided.
    Type: Application
    Filed: August 22, 2013
    Publication date: August 13, 2015
    Applicant: Depro AS
    Inventors: Rune Oyen, Odd Rune Holland, Arne Hodne