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:
Sep. 26, 1989
Filed:
Mar. 16, 1989
Fumio Sugimori, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
This invention relates to an X-ray image intensifier for intensifying and reproducing an image of an object, by use of X-ray and the like. An evacuated envelope of the image intensifier is constituted by a cylindrical glass body having an open end and a closed end, an X-ray input window covering the open end of the body, and a support ring for providing a hermetical seal between the body and the window at the open end. The window is constituted by a domed portion which expands outwardly from the evacuated envelope, a flange portion which is formed around the peripheral edge of the window and has a flat bonding surface which extends perpendicular to the axis of the evacuated envelope, with a curved portion forming a transitional area between the domed and flange portions. The support ring is bonded to the flange portion, at the flat bonding surface, and has a smaller inner diameter than the outer diameter of the curved portion. Further, the inner end of the ring member is located inward of the inner end of the flange portion.