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:
Oct. 24, 1978
Filed:
Dec. 01, 1977
Applicant:
Inventors:
Walter Kaule, Cologne, DE;
Erik Primbsch, Cologne, DE;
Assignee:
Krautkramer-Branson, Incorporated, Stratford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73643 ;
Abstract
A method and apparatus for producing on the surface of a workpiece an ultrasonic pulse wave without physical contact comprise the use of a laser beam illuminating a small, striplike, portion of the workpiece surface and such portion being moved with uniform motion along a linear axis over a predetermined distance. The angle of propagation of the resulting ultrasonic wave is a function of the propagation velocity of sound in the workpiece and the velocity of the illuminated portion along the linear axis.