The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
Mar. 21, 2017
Applicant:
Pgs Geophysical As, Oslo, NO;
Inventor:
Philip Heelan, Asker, NO;
Assignee:
PGS Geophysical AS, Oslo, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/20 (2006.01); H02H 3/16 (2006.01); G01V 3/08 (2006.01); H02H 3/33 (2006.01); H02H 3/44 (2006.01);
U.S. Cl.
CPC ...
H02H 7/20 (2013.01); G01V 3/083 (2013.01); H02H 3/16 (2013.01); H02H 3/167 (2013.01); H02H 3/33 (2013.01); H02H 3/445 (2013.01);
Abstract
Techniques are disclosed relating to electrical safety systems that may be useful, for example, in electromagnetic geophysical prospecting. Electromagnetic streamer systems often include a number of electrical loads in series that are powered by a constant-current power supply unit. Known techniques for detecting electrical faults have various drawbacks in such an arrangement. Embodiments of this disclosure may be used to mitigate some or all of such drawbacks.