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. 02, 1977
Filed:
Jun. 03, 1971
Applicant:
Inventors:
Christian Flambard, Gagny, FR;
Alain Lambert, Creil, FR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 677 ; 73 7 / ;
Abstract
This invention relates to a device for non-destructive measurement of the extent to which a surface layer of a material has been affected by a superficial treatment. The device has an emitter of ultrasonic waves and a receiver therefor, the emitter and receiver being movable over the arcuate surface of a semi-cylindrical block which is applied to the material being studied. The emitter and receiver can be moved until the ultrasonic beam is reflected by the surface of the material and measured, means being provided for precise measurement of the angle formed between the emitter and receiver.