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:
Aug. 13, 1991
Filed:
Jun. 05, 1989
Applicant:
Inventor:
Carl C Scheid, Delafield, WI (US);
Assignee:
General Electric, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G21K / ;
U.S. Cl.
CPC ...
378155 ; 378146 ;
Abstract
1. A diagnostic x-ray machine including a reciprocating grid reduces grid lines, in the radiographic image, formed as a result of velocity variations in the reciprocation of the grid, principally at the points of grid reversal. An x-ray source produces a beam of x-ray radiation along a major axis directed through the body and to the grid. A reciprocating mechanism moves the grid within a plane perpendicular to the major axis between a first limit and a second limit and the x-ray beam is modulated synchronously with the grid motion to reduce the grid image at points of grid speed variation.