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:
Jan. 04, 1977
Filed:
Mar. 31, 1975
Applicant:
Inventor:
Claude C Sims, Orlando, FL (US);
Assignee:
Marine Resources, Inc., Fern Park, FL (US);
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
340 / ; 340 / ; 340 / ;
Abstract
An electromagnetic, high compliance, high displacement low frequency underwater sound transducer is provided for use at great depths without gas compensation. Fluid filled chambers having flexible walls of predetermined area and compliance provide proper acoustic impedance to allow large transducer diaphragm displacements to radiate high power with reasonable efficiency when connected to a chamber located behind the transducer diaphragm.