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:
Mar. 21, 1989
Filed:
Oct. 06, 1986
Lawrence J Zana, Wilkinsburg, PA (US);
Gerald A Breakey, Penn Township, Westmoreland County, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A signal converter adapted for use in a nuclear fuel tube inspection system that inspects the inner diameter and outer diameter of the tubes by comparing their actual diameters to the corresponding nominal values and uses that comparison to reject or pass each fuel tube. The signal converter receives signals corresponding to the inner and outer diameters, adds those signals to inverted reference signals corresponding to the nominal values for the inner and outer diameters, shifts the difference signals by an appropriate level, and amplifies the difference signals. The amplified difference signals can be applied to an analog to digital converter and then supplied to a microprocessor for processing. The signal converter increases the resolution of the inspection system without reducing the range of signal levels that it can process.