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. 10, 1984
Filed:
Mar. 23, 1982
Hiroshi Ishijima, Tokyo, JP;
Toshiyuki Koga, Tokyo, JP;
Seiko Instruments & Electronics Ltd., Tokyo, JP;
Abstract
A fluorescent X-ray film thickness gauge has an X-ray source and a collimator for irradiating a sample with X-rays, and a detector for detecting fluorescent X-rays emitted by the sample. The detector has a cylindrical-shaped housing in which is formed a detector opening for receiving therethrough the fluorescent X-rays to be detected. The detector is rotatable or angularly displaceable about its longitudinal axis to adjust the position of the detector opening relative to the sample so as to effectively minimize variations in the intensity of the detected fluorescent X-rays due to variations in the distance between the sample and the detector.