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. 18, 1984
Filed:
Jan. 07, 1982
Applicant:
Inventors:
Emile Gabbay, Paris, FR;
Jean M Penato, Paris, FR;
Assignee:
Thomson CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
378140 ; 378147 ;
Abstract
A universal limiter for any type of x-ray tube used in radiology or radiation therapy comprises an envelope of conical shape whose axis coincides with the axis of symmetry of the useful beam of radiation. The limiter is formed of material which is opaque to secondary radiation. The inlet aperture of the limiter is located in the immediate vicinity of the emitting focal spot and the outlet aperture of the limiter is connected mechanically to the exit window of the x-ray tube.