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:
May. 18, 1976
Filed:
Mar. 12, 1973
Applicant:
Inventor:
Norman E Dixon, Pasco, WA (US);
Assignee:
Battelle Development Corporation, Columbus, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; B01J / ;
U.S. Cl.
CPC ...
3172 / ; 29 2535 ; 310-8 ; 310-81 ; 310-85 ; 310-95 ;
Abstract
A method for control monitoring the phase, depth, and area polarization of a piezoelectric transducer element. A piezoelectric element is energized by electrical pulses of controlled amplitude, duration, and repetition rate, and the response of the element is recorded by an oscilloscope or other suitable device. By properly matching the configuration, duration, and repetition rate of the driving pulses, with respect to the desired depth and phase of individual element layers, controlled-phase controlled-volume transducers may be achieved with a single piezoelectric transducer element.