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:
Jul. 09, 1991
Filed:
Jun. 13, 1990
Dale R Caldwell, Skokie, IL (US);
Other;
Abstract
A device for teaching reading and passage of time which comprises a clock face composed of not less than three planes having two separate numerical scales circumferentially and concentrically disposed therein; the outer minute scale on the highest plane represented by 60 sector shapes, each sharing a common border line set at increments of 6 degrees beginning at zero degrees at the top center of the circular scale; each minute sector shape containing a plurality of minute numerals centrally spaced within each minute sector shape and directly in line with each border line interval; the inner hour scale on the next lower plane represented by 12 sector shapes each sharing a common border line set at increments of 30 degrees beginning at zero degrees at the top center of the circular scale; each hour sector containing numerals 1 to 12 centrally spaced within each hour sector and directly in line with each border line interval; each minute and hour sector shape graphically skewed; and respective hour and minute hands mounted centrally and pivotally on the lowest plane, the hour hand raised to a level of the next lower plane and being of a length as to be within the outer periphery of the lowest plane and the minute hand raised to a level of the highest plane, and being of a length as to be within the outer periphery of the next lower plane.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile