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. 10, 1977
Filed:
May. 03, 1976
Applicant:
Inventor:
Charles E Trame, Fox Point, WI (US);
Assignee:
Everbrite Electric Signs, Inc., South Milwaukee, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09F / ;
U.S. Cl.
CPC ...
40 2 / ;
Abstract
An opaque face plate has arrays of openings which are each arranged to form numerals when light is transmitted through a predetermined selection of openings. A plurality of opaque back plates are movably mounted behind the face plate, each back plate having an array of openings positioned to coact with face plate openings to form different numerals depending upon the position of movement of the back plate. Each back plate is driven in an orbital path in a plane parallel to the plane of the face plate by means which includes a slot in the back plate, and cam means coacting with said slot.