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, 1994
Filed:
Jul. 22, 1992
Kohji Ogura, Nagoya, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A piezoelectric cable for use in detecting under water acoustic wave while being trailed by a boat is disclosed, which includes a core electrode, an outer electrode surrounding the core electrode, a piezoelectric layer disposed between the core electrode and the outer electrode, a sheath surrounding the outer electrode, and a shape retaining member extending axially within the cable and formed of a shape memory alloy whose phase is transformed between an austenite phase and a martensite phase by changing the temperature thereof and memorizing a predetermined shape in the austenite phase of the alloy. One of the core and outer electrodes may be formed of the shape memory alloy and, in this case, the shape retaining member can be omitted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile