Patent ID: 6320963
Filing Date: 2001-11-20
Classification: H04M

Abstract:
A secrecy cover, for a matrix type key pad with a plurality of pressure depressible keys arrayed in columns and rows having manually programmable operating mechanism to allow secret data entry into the key pad in a visually observable area, comprising in combination:a casement having a face and defining a medial cavity to fit over and enclose at least a 3.times.3 matrix array of keys of the key pad;at least three lineally arrayed operator keys movably carried by the casement to extend from the medial cavity, through the casement face and spacedly therefrom; andoperating mechanism, carried by the casement in the medial cavity, communicating with the operator keys and having means for selectively depressing one key in each of three adjacent rows or three adjacent columns of a 3.times.3 matrix of key pad keys covered by the casement responsive to motion of the operator keys.