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Piezoelectric pump and stirling refrigerator/freezer

Title: Piezoelectric pump and stirling refrigerator/freezer.
Abstract: A piezoelectric pump includes a casing formed of a plurality of metallic members welded and thus joined together, a piezoelectric element dividing an internal space of the casing into a working space and a back pressure space, and internal components formed of resin, and provided between the casing and the piezoelectric element and holding the piezoelectric element. The internal components are formed of workable and moldable resin. The internal component defines a perimeter of the working space and the internal component defines a perimeter of the back pressure space. The internal components are arranged opposite each other to form a recess therebetween to receive and thus hold the piezoelectric element therein. ...

- Falls Church, VA, US
Inventor: Hengliang Zhang
USPTO Applicaton #: #20080101965 - Class: 4174132 (USPTO) - 05/01/08 - Class 417 
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The Patent Description & Claims data below is from USPTO Patent Application 20080101965, Piezoelectric pump and stirling refrigerator/freezer.

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stats Patent Info
Application #
US 20080101965 A1
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Other USPTO Classes
310328, 62/6
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