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:
Feb. 04, 2003
Filed:
May. 25, 2001
Applicant:
Inventors:
Vito Suppa, Roquefort les Pins, FR;
Michel Letiche, Vallauris, FR;
Michel Lattard, La Colle sur Loup, FR;
Assignee:
Thales, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/700 ; B06B 1/04 ; G01K 1/100 ;
U.S. Cl.
CPC ...
H04R 1/700 ; B06B 1/04 ; G01K 1/100 ;
Abstract
Disclosed is an electrodynamic transducer designed to emit acoustic waves in a sea environment while being capable of withstanding external explosions. The lower pole piece of such a transducer is drilled with vertical holes enabling air to circulate inside the transducer in order to efficiently cool the coil that makes it work. Light metal masses that are good heat conductors, attached between the magnets which excite the pole pieces, furthermore drain the heat out of the transducer. The efficiency of such a transducer is increased by at least 4.