Key arrangement for data and instruction entry - has keys with foil covering contg. outer transparent layer and inner layer structured as symbol

摘要

A key arrangement has a number of sprung key elements set in key apertures in a housing surface. The elements can be operated perpendicularly w.r.t. the surface and carry visible symbols. Each element has a base body comprising the spring element and a suporting region. A foil element applied to the base body consists of at least two layers. The outer layer (S1) is transparent and essentially defines the mechanical properties of the key top. The inner layer (S2) is less transparent and is structured in the shape of the symbol. USE/ADVANTAGE - Data and instruction entry in many applications. Economical to mfr.