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:
Aug. 22, 1989
Filed:
Jun. 17, 1988
Applicant:
Inventors:
Robert A Latour, Jr, Narberth, PA (US);
Jonathan Black, King of Prussia, PA (US);
Assignee:
Trustees of the University of Pennsylvania, Philadelphia, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73805 ;
Abstract
Mechanical testing apparatus and methods are disclosed for providing closed-loop dynamic mechanical testing under small loads. The testing machine includes an electrically-driven actuator and light weight load transducer. The load transducer converts the applied load into a voltage feedback signal, which is then fed into a closed-loop control means for regulating the applied load in response, in part, to the voltage feedback signal. The testing machine is extremely sensitive and is capable of testing samples with an applied load force of less than about 20 grams.