Tactile display driven by shape memory wires

Details Tactile display driven by shape memory wires Tactile display driven by shape memory wires

1995-03-24

1998-02-17

Smith, Jeffrey A.

Education and demonstration

Communication aids for the handicapped

Tactile reading aid

434113, 3404071, G09B 2100

Patent

active

057185883

ABSTRACT:
Tactile display comprising an array of dots, preferably arranged in rows and columns, capable of showing both Braille characters and two-dimensional tactile graphics, in which the displacement of the dots is obtained by the action of opposite shape memory wires, one for each direction of displacement.
The tactile dots are kept in their raised or recessed positions by the action of elastic locking mechanisms, energy being used only to change the dot pattern.
The thickness, weight and power requirement of the display allow its use in conventional electronic notebooks, as a replacement or a complement to ordinary displays, when used by visually handicapped people.

REFERENCES:
patent: 4664632 (1987-05-01), Tretiakoff et al.
patent: 5086287 (1992-02-01), Nutzel
patent: 5165897 (1992-11-01), Johnson
"Final Report for NIH Grant No. 2 R44 EY06512-02", submitted by TiNi Alloy Company, Feb. 9, 1990.

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