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:
Nov. 17, 1998
Filed:
Apr. 29, 1997
Georges Constantinou, La Varenne St. Hilaire, FR;
Jean Laurent, Morainvillier, FR;
Marc Bernard, Lamorlay, FR;
Institut Francais du Petrole, Rueil-Malmaison, FR;
Vinci Technologies, Rueil-Malmaison, FR;
Abstract
The hydrophone according to the invention comprises at least one detection unit (1) comprising a casing made up of two cups (2a, 2b) resting on each other by a peripheral rim (3), each one of them being provided with a flexible central part, and a sensitive element (4) associated with electrodes, that is fastened to the central part of the cups, on the outer face thereof, a hollowed flat centering element (6) made of a deformable material, into which at least one casing is fitted, intended to be inserted into a tube (9) along an axial plane thereof, this centering element being provided for example with an inner slot (8) for fitting in the peripheral rim of the two cups (2a, 2b) of the casing, and a sealed protective coating (11) sheathing detection unit (1), and a part of the inner face of tube (9). Once the centering element is introduced in the tube, the substance forming the coating is injected into a thin space provided around the centering element by a two-legged moulding piece (13a, 13b) that is inserted into the tube. The hydrophone can be used in geophysical prospecting or subsea listening for example.