Braille cell

Details Braille cell Braille cell

1991-08-08

1993-07-13

Apley, Richard J.

Education and demonstration

Communication aids for the handicapped

Tactile reading aid

434112, 434114, 434115, 434117, G09B 2100

Patent

active

052268179

ABSTRACT:
The present invention discloses a braille cell comprising plural piezoelectric element reeds which are bent at the free ends thereof when DC voltage is added to them, a base body to which the piezoelectric element reeds are fixed at the base ends thereof through a print circuit board and which supports the piezoelectric element reeds piled like steps at a certain interval, and tactile pins provided corresponding to the free ends of the piezoelectric element reeds, wherein a tactile section for holding the tactile pins and provided with a detachably attaching means is detachably attached to the base body and wherein fixing plates are attached to both sides of the base body by means of their detachable attachment which is to define the piezoelectric element reeds in left and right directions of the base body.

REFERENCES:
patent: 4283178 (1981-08-01), Tetzlaff
patent: 4473356 (1984-09-01), Fernando et al.
patent: 4633121 (1986-12-01), Ogawa et al.
patent: 4664632 (1987-05-01), Tretiakoff et al.
patent: 4758165 (1988-07-01), Tieman et al.

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