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:
May. 23, 1989
Filed:
Aug. 08, 1988
Applicant:
Inventors:
Richard L Lemaster, Pinole, CA (US);
David A Dornfeld, Berkeley, CA (US);
Assignee:
The Regents of the University of California, Berkeley, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73587 ;
Abstract
Method and apparatus for determining vertical density profiles in wood composites. A fly cutter is rotated across the edge of a wood composite panel to produce acoustic emissions that themselves produce an RMS voltage. The changes is RMS voltage so produced are recorded and thereby the acoustic emission is recorded. The detected signal is transformed into electrical signals, amplified and transmitted to a suitable detecting transducer.