Education and demonstration – Communication aids for the handicapped – Tactile reading aid
Patent
1979-07-02
1981-08-11
Grieb, William H.
Education and demonstration
Communication aids for the handicapped
Tactile reading aid
G09B 2100
Patent
active
042831784
ABSTRACT:
An electromechanical braille cell is disclosed wherein each cell includes six braille indicia formed by the free ends of a vertical stack of cantilever supported piezoelectric reeds. Applying an operating potential to a respective reed causes the reed to bend about a fulcrum at the supported root end of the reed causing the free end to deflect in such a manner as to cause the indicia rod to protrude through an opening in the reading surface of the braille cell. Simultaneous energization of one or more of the reeds in the respective stack defines a given braille character sensed by the operator. The free ends of the reeds are tiered in pairs in a stair step configuration so that the sensing rods from a lower pair of reeds pass by the free end portions of the reeds of a higher step. The upper reed of each pair of reeds is notched to allow passage of the sensing rod associated with the lower reed of that pair of reeds.
REFERENCES:
patent: 1487115 (1924-03-01), Quarrie
patent: 3229387 (1966-01-01), Linvill
patent: 4044350 (1977-08-01), Tretiakoff et al.
Final Report, Project No. 142112, Grant No. DEG-0-8-071112-2995, Research and Development of Tactile FAcsimile Reading Aid for the Blind, Linvill, Mar. 1973, pp. iii and 27.
Aine Harry E.
Grieb William H.
Lowhurst Harvey G.
Telesensory Systems, Inc.
LandOfFree
Electromechanical braille cell does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electromechanical braille cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromechanical braille cell will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1024192