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. 30, 1989
Filed:
Dec. 29, 1987
Applicant:
Inventors:
Allan D Kautz, Naperville, IL (US);
Janice L Wichmann, Park Ridge, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ; G05B / ;
U.S. Cl.
CPC ...
445 30 ; 318640 ; 318573 ; 318574 ; 901 42 ; 21912164 ; 21912179 ;
Abstract
This disclosure describes a method and associated apparatus, in the manufacture of flat tension mask cathode ray tubes, for detecting the edges of a mask receiving surface in a plane, identifying its coordinates and subsequently delineating the path of an attachment device for permanently affixing a tensed foil shadow mask to the mask receiving surface of a mask support structure.