Education and demonstration – Language – Alphabet letter formation – recognition – or sequencing
Patent
1998-06-12
2000-04-18
Hafer, Robert A.
Education and demonstration
Language
Alphabet letter formation, recognition, or sequencing
434156, 434112, 434113, 434428, G09B 100
Patent
active
060508248
ABSTRACT:
Representations of letters of the alphabet have surfaces which have a feel on being touched which are different from the feel of surfaces of other letters. The letters may be presented in a book having a plurality of pages, each page displaying a letter of the alphabet, the surface of the letter having a feel on being touched which is different from the feel of its page and from the feel of other letters. The letters may also have a different appearance from the appearance of other letters. Each letter may have a combination of feel and appearance which is different from the combination of feel and appearance of each of the other letters. The letters may be disposed in a plane which is offset from a plane defined by its page. Each page is preferably split into a first portion which displays the uppercase form of the letter and a second portion which displays the lowercase form of the letter, the first and second portions being capable of being turned independently of one another.
REFERENCES:
patent: 1584627 (1926-05-01), Marino
patent: 4315748 (1982-02-01), Frascara et al.
patent: 4427390 (1984-01-01), Manger
patent: 4878844 (1989-11-01), Gasper et al.
patent: 5788503 (1996-02-01), Shapiro et al.
Hafer Robert A.
Miller Bena B.
Nelson Gordon E.
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