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. 15, 1986
Filed:
May. 31, 1984
Applicant:
Inventor:
Walter D Masterton, Manheim Township, Lancaster County, PA (US);
Assignee:
RCA Corporation, Princeton, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313403 ; 313402 ; 313408 ;
Abstract
An improvement is made in a color picture tube having a slit-type shadow mounted therein in spaced relation to a cathodoluminescent line screen. For the mask, the spacing between adjacent aperture columns increases from center-to-edge as approximately the fourth power of the distance along from the center. Such fourth order spacing variation permits shaping of the shadow mask so that the contour of the mask along its major axis also varies as a function substantially of the fourth power of distance along from the center of the mask.