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:
Mar. 21, 1978
Filed:
Jul. 16, 1976
William Norman Mayer, White Bear Lake, MN (US);
Richard Karl Kirchner, Bloomington, MN (US);
Nicholas Cleanthis Andreadakis, White Bear Lake, MN (US);
Modern Controls, Inc., Minneapolis, MN (US);
Abstract
Apparatus for providing a visual information screen of the type formed from a plurality of gas cells wherein electrical voltages are capacitively coupled to selected cells to cause gas ignition and subsequent light emisson. The present invention comprises an improvement over prior art devices in that it utilizes a single plane of parallel spaced conductors to ignite gas in channels perpendicularly aligned with respect to the conductors and located above the conductor plane, wherein a gas cell is defined by the region within a channel between two parallel conductors, and further in that it utilizes a special conductor geometry to initially ignite a gas cell and introduce data into the screen with only a single voltage-magnitude source.