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:
Apr. 23, 1991
Filed:
Aug. 31, 1989
Francisco Hernandez, Concord, CA (US);
Jerry Chamberlain, Pittsburg, CA (US);
Siemens Medical Laboratories, Inc., Walnut Creek, CA (US);
Abstract
The generation of excessive electron radiation or X-ray radiation is prevented in an apparatus which comprises an accelerator means for generating and accelerating electrons. These electrons form an electron beam which has a predetermined low intensity level for the generation of electron radiation or a predetermined high intensity level for the generation of X-ray radiation. In case of generating electron radiation a scattering foil or a target, respectively are arranged in the trajectory of the electron beam. The foil and the target are movably arranged on a support means. Detecting means operable by this support means sense the position of the foil and the target relative to the trajectory of said electron beam and inhibiting means prevent the generation of an electron beam having an intensity level which exceeds the predetermined low intensity level if the target is not positioned and/or which exceeds the predetermined high intensity level if the target is positioned in the trajectory of the electron beam.