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:
Jun. 16, 1998
Filed:
Jun. 26, 1996
Applicant:
Inventors:
Hidenori Obata, Tokyo, JP;
Tomohiro Tsuboi, Tokyo, JP;
Takashi Yoshikawa, Tokyo, JP;
Akiyoshi Kawamori, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
367172 ; 367162 ; 367167 ; 367176 ; 310337 ;
Abstract
In a flextensinal transducer a drive stack provided inside the oval shell has a strain compensator that has a cylinder and piston. The cylinder is provided in the oval shell, and the piston is stiffly attached to the end of the drive stack. Inside the cylinder, the piston can move along the major axis of the oval shell. When the flextensional transducer is sunk into the water, the oval shell is distorted to extend along the major axis. Then the cylinder and the piston moves relatively to each other to compensate for the distortion.