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, 1983
Filed:
Oct. 05, 1981
Applicant:
Inventor:
Ralph J D'Amato, Lancaster, PA (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
313348 ; 313449 ; 313444 ; 313447 ; 313349 ; 313452 ;
Abstract
An electron gun comprises a cathode for generating at least one electron beam along a beam path and a plurality of electrodes spaced along the beam path from the cathode. The electrode adjacent to the cathode comprises an electrically conductive base member of a first material having an aperture extending therethrough. The base member has two opposing surfaces that have overlying layers of a second electrically conductive material disposed thereon. The overlying layers overhang the aperture in the base member. At least one of the overlying layers has a plurality of apertures therethrough.