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. 11, 1977
Filed:
Sep. 08, 1976
Applicant:
Inventor:
Joseph J Grass, Brookfield, WI (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
250491 ; 250320 ; 250476 ;
Abstract
A device for aligning the central ray of an x-ray beam with the center of an image receptor comprises a metal tube in a mounting which is provided with means for establishing the axis of the tube perpendicular to the plane of the image receptor or other plane which is perpendicular to the central ray. The tube is mounted in such manner that the region around it is x-ray permeable. The mounting is adapted for being moved in parallelism with the plane such that alignment of the central ray with a point on the receptor may be determined when the circular shadow cast by the outside of the tube is concentric with the circular image of the tube bore.