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:
Dec. 22, 1987
Filed:
Dec. 17, 1982
Applicant:
Inventor:
Robert L Jones, La Habra, CA (US);
Assignee:
NDT Instruments, Inc., Huntington Beach, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
364563 ; 73 / ; 73597 ; 73629 ;
Abstract
A microprocessor-controlled, hand-held, digital ultrasonic thickness gage having automatic zero calibration, scroll velocity adjustment and an electronic locking feature to prevent inadvertent calibration or velocity data variations. This invention is used with a dual-element transducer and, in that regard, employs a microprocessor program which automatically corrects for the well-known, inherent thickness gaging inaccuracies (nonlinearities) always caused by the use of the otherwise advantageous (high sensitivity) dual element transducer.