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:
Jul. 20, 1976
Filed:
Mar. 31, 1975
Carl O Berglund, Houston, TX (US);
Teledyne Exploration Company, Houston, TX (US);
Abstract
A pressure-sensitive improved acceleration-cancelling hydrophone assembly and transducer unit for inclusion therein, each transducer unit being made of glass and metal parts hermetically sealed together with no exposed plastic, each sealed unit containing paired piezoelectric wafers mounted inside the sealed unit in opposed relationship and electrically interconnected such that pressure forces combine in the output signal but acceleration forces cancel, and the hydrophone assembly comprising a barrel in which one or more of these transducer units are mounted in vibration-isolated relationship, the mountings engaging the transducer units at surfaces thereof which are least likely to couple vibrations to the piezoelectric wafers.