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.:

US 7236252 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 26, 2007

Filed:

Aug. 05, 2004
Applicants:

Louis G. Carreiro, Westport, MA (US);

Lawrence J. Reinhart, Wilmington, MA (US);

Inventors:

Louis G. Carreiro, Westport, MA (US);

Lawrence J. Reinhart, Wilmington, MA (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 11/02 (2006.01); G01B 13/08 (2006.01); G01B 7/16 (2006.01); G01N 33/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A device designed to apply uniaxial pressure to the surface of an electro-active material while simultaneously applying a current to the material under controlled temperature conditions and then measuring the displacement of the material by means of a laser interferometer. The device involves a housing with a chamber in which a sample of material is secured. The chamber has an aperture with a quartz window that allows the laser beam from the interferometer to pass. The sample is connected to electrodes and the chamber is filled with dielectric oil that applies the uniaxial pressure to one side of the sample. The device is placed onto a thermal control system. When the appropriate thermal and pressure conditions are established, current is applied to the sample and the interferometer measures the displacement.


Find Patent Forward Citations

Carreiro, Louis. (2007). System and apparatus for measuring displacements in electro-active materials (U.S. Patent No. 7236252). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7236252

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