Tactile reading device

Details Tactile reading device Tactile reading device

1993-11-23

1995-09-12

Cheng, Joe H.

Education and demonstration

Communication aids for the handicapped

Tactile reading aid

434113, 34082519, 40012414, G09B 2100

Patent

active

054492920

ABSTRACT:
This invention discloses a tactile reading device including sensing rods that are supported to be vertically movable, piezo-electric actuating elements disposed in the vertical direction such that their free end portions are directed upward, and pushing-up cams having first levers which are axially and pivotally supported on support rods provided at an upper position of the free end portions of the piezo-electric actuating elements, extending downward from the support rods, and having side surfaces at distal end portions thereof which are freely abutted against the free end portions of the piezo-electric actuating elements, and second levers extending horizontally from the support rods and freely mounting, on their mounting planes, lower end portions of the sensing rods corresponding to the piezo-electric actuating elements.

REFERENCES:
patent: 4191945 (1980-03-01), Hannen et al.
patent: 4664632 (1987-05-01), Tretlakoff et al.
patent: 4898536 (1990-02-01), Hoffarth
patent: 5165897 (1992-11-01), Johnson
patent: 5226817 (1993-07-01), Nakajima et al.

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