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1129results about "Seismic energy generation" patented technology

Adjustable electrode and related method

The present invention relates to a electrode assembly and related method that includes a insulator assembly, an electrode assembly, a charging system, a mechanism for measuring electrical voltages, a mechanism for adjusting the distance between inner and outer electrode tips, and a controller. The insulator assembly includes an insulator body having a hollow central portion with a threaded inner wall. The insulator assembly includes inner and outer conductors that are electrically connected to the charging system and are physically connected to inner and outer electrodes, respectively. The electrodes are positioned such that their longitudinal axes are aligned and the tips of the electrodes are in relatively close physical proximity. The distance between the tips is defined as the spark gap. The charging system charges a capacitor that discharges and forms a spark across the spark gap. The electrical measuring mechanism measures the discharge voltage of the capacitor and the controller compares it to a reference voltage, issuing a correction signal to the adjusting mechanism that repositions the electrodes, thus optimizing the spark gap. An alternate embodiment analyzes the charge and discharge characteristics of an electrode assembly that utilizes a second capacitor and an inductor to adjust the spark gap.
Owner:MTS MEDICAL TECH & SERVICES

Marine vibrator

InactiveUS6230840B1Reduce hydrodynamic dragReducing hydrodynamic dragSeismic energy generationSound producing devicesCurve shapeEngineering
A marine vibrator has a hollow body formed of one shell or of two opposed shells defining an inner space therein with vibrator apparatus within the hollow body. At least one shell has a curved shape, and the shell can have a streamlined shape with relatively low hydrodynamic drag. Certain embodiments include one or more exterior control members to facilitate positioning of the vibrator in water. Other than their mating ends, when two shells are used the two shells may be different in shape and volume or they may be identical. In preferred two-shell embodiments, there is a flexible seal between and connecting the two opposed shells. In certain aspects the inner space is filled with gas. A vibrator apparatus in one aspect applies equal and opposite forces to the shells of a two-shell vibrator or to opposed sides of a single shell vibrator.
Owner:WESTERNGECO LLC

Streamlined, readily towable marine seismic energy source for creating intense swept-frequency and pulse-coded signals in a body of water

Streamlined, towable, marine seismic energy vibrator for creating intense swept-frequency and pulse-coded seismic signals in a body of water has a sleek, fish-like configuration designed for towing with minimum drag. The vibrator has a streamlined hollow towing head and a streamlined hollow tail head mounted onto front and rear of a long cylindrical tubular wall which is modular, comprising cylinder sections joined in end-to-end axial alignment. Within this long tubular cylinder wall is an axially vibratable multi-piston assembly having a plurality of pistons on a long piston rod. One piston is positioned in each of the cylinder chambers. These chambers hive multiple ports opening out through the long cylindrical wall. An elongated circular cylindrical elastomeric bladder forms a water-filled bladder chamber encircling the wall. An actuator piston is vibrated by a remotely controllably hydraulic circuit, thereby vibrating the multi-piston assembly for vibrating water out and in through multiple ports communicating with the water-filled bladder chamber for vibrating the exterior of the bladder shown having diameter "D" of 18 inches and length "L" of 118.5 inches, providing a 6,700 square inch vibration area contacting the ambient water. A multi-piston position sensor enables synchronization of the vibrator with companion sources being towed. An axial passage in the long piston rod feeds low-pressure compressed air into the cylinder chambers forming air cushions behind the pistons vibrating water in these cylinder chambers.
Owner:BOLT TECH CORP
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