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. 08, 1989
Filed:
Jun. 28, 1988
Applicant:
Inventor:
Vladimir Drits, Minnetonka, MN (US);
Assignee:
Innovex Inc., Hopkins, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73104 ;
Abstract
A method for determining wear or dullness of a cutting tool used to machine a surface of a workpiece. Cutting tool dullness is determined as a function of a plurality of work-hardening values of the machined surface. Each work-hardening value is computed as a function of different and separately measured parameters. The workpiece is characterized as being excessively worn if all of the separately computed work-hardening values are greater than a threshold value.