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:
Jun. 29, 1993
Filed:
May. 08, 1992
Teruomi Gunji, Ootawara, JP;
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Abstract
An X-ray beam limiting apparatus, is used for a stereoscopic X-ray tube with two focal points separated from each other by a distance of approximately 35 mm. The X-ray beam limiting apparatus includes pivotable blade means for beam-limiting inner edges of pyramid-shaped X-ray beams emitted from the first and second X-ray focal points, while pivoting around center lines of first and second pivotable shafts positionally shifted with each other; and, first slidable blade means for beam-limiting outer edges of the pyramid-shaped X-ray beams emitted from the first and second X-ray focal points, while sliding on a plane substantially perpendicular to travelling paths of the pyramid-shaped X-ray beams.