Electricity: measuring and testing – Of geophysical surface or subsurface in situ – By magnetic means
Patent
1992-09-30
1994-07-05
Strecker, Gerard R.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
By magnetic means
324247, 324347, 324350, 324365, G01V 300, G01V 308, G01V 340, G01R 3302
Patent
active
053270894
ABSTRACT:
A portable underwater mount for magnetic and electric field sensors. The mount has a gimbal-like structure comprising a ball member having a mounting flange for coupling to the magnetometer. The ball member is cast from polyurethane with Teflon powder suspended therein, providing a substantially frictionless surface. The ball member is disposed over a support platform having a spherical contour so that the weighted sensor positions itself to true vertical. A collar having a lock terminating in the support platform rests over the ball member so that once the sensor is oriented to magnetic north, the lock is engaged to secure the sensor in true vertical and magnetic north positions.
REFERENCES:
patent: 2123045 (1938-07-01), Hoare
patent: 3085197 (1963-04-01), Hings
patent: 3514693 (1970-05-01), Cagniard
patent: 4292590 (1981-09-01), Wilson
patent: 4388592 (1983-06-01), Schonstedt
Thorn EMI Electronics, "Signature measurement and control", Special Advertising Supplement to IDR 8, 1991, pp. 13-15.
Mofford Donald F.
Raytheon Company
Sharkansky Richard M.
Strecker Gerard R.
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