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. 06, 1986
Filed:
Jan. 03, 1985
Joachim Burchart, Schlangen, DE;
Nixdorf Computer AG, Paderborn, DE;
Abstract
An apparatus for reading by blind persons comprising a data medium in the form of a thick elastic belt and having formed therein a dense uniformly spaced two-dimensional array of data elements of thin membrane-like construction integral with the belt and capable of assuming stable convex and concave conditions wherein they either project upwardly from the belt to be sensible by a person's finger or down into the belt where they may not be felt. Because of the thickness of the belt, the data elements are also capable of assuming intermediate unstable conditions wherein they do not experience a transition to the opposite state simply because they are compressed flush with a surface of the belt. Means are provided for setting and resetting the data areas.