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:
May. 12, 1998
Filed:
Jan. 28, 1997
Hiroshi Takanobu, Mobara, JP;
Akimasa Ishikawa, Nagara-machi, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Electronic Devices Co., Ltd., Chiba-ken, JP;
Abstract
A cathode ray tube has a contact spring 30 which is fixed at one end to a shield cup 27 provided on an anode electrode 26 of an electron gun assembly and is pressed at the other end against an electrically conductive coating 3a applied to an inner wall of a funnel portion 3, so as to provide a reliable electrical connection between the anode electrode 26 and the electric conductive coating 3a and to hold the electron gun assembly coaxially in the neck portion 2. The contact spring 30 is made of an alloy material which is composed of 30-35 wt % nickel (Ni), 19-23 wt % chromium (Cr) and the balance of which is substantially iron (Fe), and which has a micro Vickers hardness of 250-400.