Education and demonstration – Communication aids for the handicapped – Writing guide for the blind
Patent
1981-12-07
1984-01-10
Grieb, William H.
Education and demonstration
Communication aids for the handicapped
Writing guide for the blind
G09B 2100
Patent
active
044250959
ABSTRACT:
The invention provides a writing aid comprising a contoured surface having a plurality of relatively depressed surface portions and raised ridges or surface regions at least partially surrounding each depressed surface portion at a level differing therefrom by an amount rendering transition between a ridge or region and a depressed portion tangible to a person through a hand-held writing implement traversing the surface. The contoured surface may be provided by embossing writing paper or embedding threads therein, or may be provided on a substrate or backing sheet for a piece of plain paper.
REFERENCES:
patent: 1371430 (1921-03-01), Nickerson
patent: 2616198 (1952-11-01), Sewell
patent: 3667139 (1972-06-01), Barr
patent: 3872611 (1975-03-01), Kuhn
Brown Charles E.
Grieb William H.
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