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:
Jul. 18, 1989
Filed:
Jun. 27, 1988
Raymond Metcalfe, Chalk River, CA;
Ronald G Wensel, Deep River, CA;
Atomic Energy of Canada Limited, Ottawa, CA;
Abstract
This invention provides non-destructive testing of elongate compressible materials, and particularly to determine the elastodynamic properties of a material, and/or to detect defects such as non-uniformities in resilience or hardness, subsurface as well as surface defects such as inclusions, voids, tears, and the like. The material to be tested is passed between two rollers of substantially contant roller spacing. Measurement of the load provides an indication of elastodynamic properties of the material. Variations in the measured load can be utilized to detect defects in the material. The invention has been found particularly suitable for the testing of material for seals, such as O-rings.