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. 09, 1990
Filed:
Sep. 25, 1985
Toshiyuki Koga, Tokyo, JP;
Seiko Instruments Inc., , JP;
Abstract
An X-ray device comprising an X-ray tube (1); a shutter (9) which is movable between an open position (not shown) in which X-rays from the X-ray tube (1) may be directed onto material (8) to be tested and a closed position (shown in FIG. 1) in which the said X-rays are prevented from being so directed; an X-ray detector (4) for detecting fluorescent X-rays emitted by said material (8) when the shutter (9) is open; means (2) movable with the shutter (9) for receiving X-rays from the X-ray tube (1) and for directing fluorescent X-rays onto the X-ray detector (4) when the shutter (9) is closed; and correction means (11-14) connected to said X-ray detector (4) for automatically correcting a change in the X-rays produced by the X-ray tube (1).