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. 03, 1990
Filed:
May. 08, 1989
Harry R Meline, Minnetonka, MN (US);
Eric L Paulsen, Wayzata, MN (US);
MTS Systems Corporation, Eden Prairie, MN (US);
Abstract
A capacitive extensometer has an extensometer frame formed of a pair of arms having first ends with specimen contacting members and which are connected together about a hinge axis at second remote ends. The specimen contacting members engage the surfaces of a specimen to be tested. A capacitive type sensing arrangement is mounted on the arms, and is used with conventional circuitry for determining arm motion. The sensing members are located to insure adequate output, and can be located to the exterior of the periphery of the extensometer arm assembly. The ability to mount the capacitor sensor appropriately, while obtaining a relatively large output signal enhances the operability of the extensometer.