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:
Apr. 16, 1991
Filed:
Jul. 28, 1989
Applicant:
Inventor:
John W McElroy, Newtown Square, PA (US);
Assignee:
Liberty Technology Center, Inc., Conshohocken, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
G21C / ; G08B / ; G01D / ;
U.S. Cl.
CPC ...
36455101 ; 376245 ; 137553 ; 73587 ; 73DI / ; 340686 ;
Abstract
A non-invasive system and method is provided for the inspection of check valves which combines acoustic and magnetic techniques. The acoustic and magnetic techniques are used to measure check valve disk motion and internal impacts or vibrations resulting from the disk motion.