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. 09, 1988
Filed:
May. 21, 1985
Applicant:
Inventors:
Gilbert Colomb, Voiron, FR;
Jean P Creusot, St. Martin d'Heres, FR;
Henri Rougeot, St. Nazaire les Eymes, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313544 ; 313420 ; 220 / ;
Abstract
The present invention provides a vacuum envelope for a radiation image intensifying tube and a process for manufacturing same. In a vacuum envelope of the type comprising a central body, an input window made from aluminum or an aluminum alloy at one end of said central body and a transparent output window at the other end of the body, said input window comprises a peripheral skirt fitting over a ring having the same section as said skirt, and made from iron or an iron alloy, integral with the end of the body, said skirt being welded to the ring by magnetic induction welding so as to be vacuum tight.