Resilient deformable keyboard

An improved keyboard of the type having an array of keyfaces and a corresponding array of switches, wherein the improvement comprises:

• a sheet having a first side and an opposing second side with a plurality of apertures extending from the first to the second side, such apertures each extending, from and in registry with a keyface on the first side, to the corresponding switch at the second side;
• a plurality of closed cells, each cell being disposed in one of the apertures and having first and second elastically deformable surfaces defining first and second ends thereof proximate to the first and second sides of the sheet, respectively;
• each such cell being filled with a deformable medium at least somewhat resistant to compression for tranducing deformations of the first surface caused by pressure on the keyface, into deformations of the second surface for operating the corresponding switch;
• each aperture being of a dimension to laterally confine the sidewalls of the cell disposed therein so that motion of the first surface is transduced into motion substantially only of the second surface without motion of the cell sidewalls.