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:
Dec. 11, 2001
Filed:
Apr. 21, 2000
Jean Laurent, Marseilles, FR;
Georges Constantinou, La Varenne Saint Hilaire, FR;
Other;
Abstract
Hydrophone with two unsymmetrically connected sensitive elements. The hydrophone comprises a detection unit including a closed housing (,) delimited by two cups (,) resting against each other, each one being provided with a flexible diaphragm (,) and at least two piezoelectric sensitive elements (,) associated each with electrodes (,), one outside the housing, the other inside the housing. The two sensitive elements are preferably different in size, notably with different diameters. Electrodes (,) of the sensitive elements that are not in contact with cups (,) are electrically interconnected and the electrodes in contact with cups (,) are also electrically interconnected. Each detection unit is preferably included in a protective assembly (not shown). The hydrophone can be used for marine seismic monitoring or prospecting for example.