Patent ID: 9734731
Date: 2017-08-15
CPC Classifications: G09B

Claim:
1. A braille display having an undivided outer wall with a flat outer surface, an inner surface and a plurality of holes extending between the outer surface and the inner surface and which are arranged in an at least substantially regular pattern relative to each other, wherein the braille display is further provided with individual, removable braille cells, each braille cell consists of an integrated housing with an outer wall, a bottom wall and side walls and a sub-housing with a plurality of tactile members each being secured in said sub-housing and movable between a first outer position and second outer position, wherein for each braille cell, a distance as measured in a longitudinal direction of the tactile member between the free top of the tactile member and the outer surface if the tactile member is in the first outer position differs from the distance as measured in a longitudinal direction of the tactile member between the free top of the tactical member and the outer surface if the tactile member is in the second outer position, the inner surface of the outer wall having a first and second longitudinal edge extending parallel to each other wherein each of the braille cells is clamped between the edges, the sub-housing having opposing end side walls flexible for movement towards each other for cooperation with a respective grooved portion of the first and second longitudinal edges of the outer wall for a snap-fit connection and retention in a manner that allows removal and alignment of a tactile member with a respective hole; each of said tactile members extends away from the sub-housing and is movable between the first and second outer position wherein each tactile member comprises a free top and wherein the sub-housing of each individual braille cell is attached directly to only a portion of the outer top wall by the snap-fit connection with the respective grooved portions, wherein each tactile member extends through one of the holes from the inner surface in a direction of the outer surface, when the tactile member is in the second outer position and wherein a position of the free top of the tactile member relative to the outer surface when the tactile member is in the first outer position differs from the position of the free top of the tactical member relative to the outer surface when the tactile member is in the second outer position, and each braille cell is individually attached to the outer wall and defines at least one braille character.