Patent application number | Description | Published |
20110158045 | System for adjusting geophysical sensor streamer front end towing depth - A system for towing a marine geophysical sensor streamer includes a lead in line extending from a tow vessel. A streamer front end termination is coupled to an end of the lead in line and to a forward end of the sensor streamer. A floatation device is coupled by a line proximate to the front end termination. A winch is disposed on the floatation device to extend and retract the line. A depth sensor is disposed proximate the front end termination. A controller is in signal communication with the winch and the depth sensor so that the forward end of the streamer is maintained at a selected depth in the body of water. | 06-30-2011 |
20110203509 | Tension management control system and methods used with towed marine sensor arrays - A method for towing a sensor streamer array in a body of water includes towing a plurality of sensor streamers behind a vessel in the water, measuring tension at a plurality of positions along the array and determining at least one of an optimum operating speed for the vessel, when the streamers and associated towing equipment have become affected by marine debris so as to require cleaning, and an optimum angle of attack of at least one paravane in the towing equipment. | 08-25-2011 |
20120222607 | SYSTEM AND METHOD OF CONTROLLING FORCE DEVELOPED BY A PARAVANE SYSTEM - Controlling lateral force developed by a paravane system. At least some of the illustrative embodiments are methods including: towing a paravane system through water, the towing by way of a bridle comprising a plurality of fixed-length forward lines coupled to a respective plurality of forward tow points, and a plurality of fixed-length aft lines coupled to a respective plurality of aft tow points; and while towing the paravane system through the water changing one or both of the lateral force supplied by the paravane or the direction of the force supplied by the paravane. | 09-06-2012 |
20130010570 | Towing Methods and Systems for Geophysical Surveys - Disclosed are methods and systems for controlling spread and/or depth in a geophysical survey. An embodiment discloses a method for geophysical surveying, comprising: towing two streamers laterally spaced apart through a body of water at a depth of at least about 25 meters, each of the streamers comprising geophysical sensors disposed thereon at spaced apart locations; maintaining lateral separation of at least about 150 meters between the two streamers using at least two submersible deflectors, the two submersible deflectors being individually coupled to one of the two streamers; and detecting signals using the two geophysical sensors while the two streamers are towed at the depth of at least about 25 meters. | 01-10-2013 |
20130010571 | Towing Methods and Systems for Geophysical Surveys - Disclosed are methods and systems for controlling spread and/or depth in a geophysical survey. An embodiment discloses a submersible deflector, comprising: an upper portion comprising an upper fin section and upper foils disposed below the upper fin section, wherein at least one slot is defined between the upper foils; and a lower portion coupled to the upper portion and disposed below the upper portion, wherein the lower portion comprises a lower fin section and lower foils disposed above the lower fin section, wherein at least one slot is defined between the lower foils. Also disclosed are marine geophysical survey systems and methods of performing geophysical surveys. | 01-10-2013 |
Patent application number | Description | Published |
20140304799 | System and method for operating a safety-critical device over a non-secure communication network - In a system and method for operating, at a near location, a remote safety-critical device, the system includes a first operating input device operated at the near location, providing a first barrier control signal; and a second operating input device to be operated at the near location, providing a second barrier control signal. The first barrier control signal is communicatively connected to a near end of a first secure communication tunnel, and the second barrier control signal is communicatively connected to a near end of a second secure communication tunnel, both through the non-secure communication network. Far ends of the first and second secure communication tunnels are communicatively connected to activating inputs of first and second barrier circuits, respectively. The first and second barrier circuits enable operation of the safety-critical device when both are activated. | 10-09-2014 |
20150372985 | SYSTEM AND METHOD FOR OPERATING A SAFETY-CRITICAL DEVICE OVER A NON-SECURE COMMUNICATION NETWORK - A system and method for operating, at a near location, a safety-critical device located at a far location. The system includes a first operating input device to be operated at the near location, providing a first barrier control signal; and a second operating input device to be operated at the near location, providing a second barrier control signal. The first barrier control signal is communicatively connected to a near end of a first secure communication tunnel through the non-secure communication network, and the second barrier control signal is communicatively connected to a near end of a second secure communication tunnel through the non-secure communication network. A far end of the first secure communication tunnel is communicatively connected to an activating input of a first barrier circuit, and a far end of the second secure communication tunnel is communicatively connected to an activating input of a second barrier circuit. | 12-24-2015 |