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, 1987
Filed:
Dec. 19, 1985
Applicant:
Inventors:
Walter D Masterton, Manheim Township, PA (US);
Andrew Good, East Cocalico Township, both of Lancaster County, PA (US);
Assignee:
RCA Corporation, Princeton, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313403 ; 313408 ;
Abstract
The present invention provides an improvement in color picture tubes having slit type apertured shadow masks wherein the aperture throats are arranged in columns, and the apertures within each column are separated by webs. The improvement comprises the aperture throat columns passing through a center portion of the mask being substantially straight, and the aperture throat columns on both sides of the center portion of the mask being convexly curved toward the center portion and increasing in curvature with distance from the center portion.