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. 04, 1989
Filed:
Mar. 15, 1988
Samuel P Benigni, Lititz, PA (US);
RCA Licensing Corporation, Princeton, NJ (US);
Abstract
The novel CRT has an electron gun mount assembly therein which is similar in construction to prior CRT's. The electron gun mount assembly includes a cathode for generating at least one electron beam and a plurality of successively spaced electrodes including a screen grid electrode, a focusing electrode and an anode electrode secured to one major surface of at least two longitudinally extending insulating support beads. A first gap of predetermined width extends between the anode electrode and one end of the focusing electrode. A second gap of predetermined width extends between the opposite end of the focusing electrode and the screen grid electrode. An opposite major surface of each of the support beads faces outwardly and has thereon an electrically-conducting coating having a longitudinal dimension, d. Suitable voltages are applied to the electrodes to generate electrical activity. The coating on each of the beads is spaced a distance 1.25.times.d from the end of the focusing electrode adjacent to the second gap.