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:
Mar. 09, 1976
Filed:
May. 08, 1974
Booth B Strange, Houston, TX (US);
Western Geophysical Company of America, Houston, TX (US);
Abstract
A depth controller having a streamlined body which comprises retractable and extendable lift producing means, such as a main pair of vanes that can produce a variable negative lift and an auxiliary pair of vanes that can produce a variable positive lift. Each pair is movable by translation or rotation in a single plane, inclined relative to the horizontal. Depth control means are operatively coupled to retract the main pair of vanes inward as the controller moves from the water surface down to a reference depth and to extend the auxiliary pair of vanes outward as the controller falls below the reference depth. Each controller can be used to effectively maintain a seismic streamer cable section at or near the desired reference depth.