Editing Piezoelectric transducer

{{infobox patent|country=US|number=2640889|issue=17 May 1949|reference={{cite patent|US2640889}}}}

A '''piezoelectric transducer''' is an effect by which barium titanate or barium strontium are bonded with a ceramic binder. It is attained by the unidirectional electric polarizing field after subjecting the polycrystalline aggregate. The remaining saturation is called to have a piezo-electric effect. The patent for the invention was filed on May 17, 1949 and granted on June 2, 1953. <ref> {{ cite patent | country = US | number = 2640889 | status = patent | title = Piezoelectric transducer | pubdate =  | gdate = 2 June 1953 | fdate = 17 May 1949 | pridate =  | inventor = Walter L. Cherry | invent1 =  | invent2 =  | assign1 =  | assign2 =  | class = }} </ref>

==Description==
'''Piezoelectric transducer'''
* Inventor: Walter L. Cherry
* Patent number: 2640889
* Filing date: 17 May 1949
* Issue date: 2 June 1953

==Abstract==

<blockquote>
I claim <br/>
(1) A piezo electric transducer comprising a composite bimorphic element including a pair of juxtaposed polycrystalline aggregiate bodies and having permanent piezo electric properties with the direction of the piezo eleetric axis different in adjacent portions of each of said bodies.<br/>
(2) A piezo electric transducer comprising a composite bimorphie element including a pair of juxtaposed polycrystalline aggregate bodies and having permanent piezo electric properties with the direction of the piezo electric axis different in longitudinally adjacent portions of each of said bodies.<br/>
(3) A piezo electric transducer comprising composite bimorphic element including a pair juxtaposed thin substantially diamond polycrystalline aggregate bodies and having permanent piezo electric properties.<br/></blockquote>

==Images==

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File:piezoelectric-transducer.png
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==Referenced by==

* {{ cite patent | country = US | number = 3986061 | status = patent | title = Piezoelectric ignition device | pubdate =  | gdate = 12 October 1976 | fdate = 12 December 1974 | pridate =  | inventor = Kazuma Susuki; Takahiro Kurosawa| invent1 = Takahiro Kurosawa | invent2 =  | assign1 =  | assign2 =  | class = }}

==References==
<references/>

[[Category:Patents]]