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. 09, 1986
Filed:
Sep. 25, 1984
Jerry A Kamuf, Owensboro, KY (US);
Russell L Arnold, Reynolds Station, KY (US);
Premium Allied Tool, Inc., Owensboro, KY (US);
Abstract
An indirectly heated cathode structure for use in cathode ray tubes containing a hollow sleeve of cylindrical shape wherein one edge portion of the sleeve is folded outwardly and backwardly around and against the sleeve. A cap having a circular surface surrounded by a circular sidewall is disposed over the folded edge portion of the sleeve. The sidewall contains an annularly shaped ledge extending around an interior surface portion thereof upon which an end of the folded edge portion of the sleeve rests so as to increase the resistance of the cap to push-off forces applied thereto when the sleeve is restrained. A method for forming the foregoing structure is also disclosed.