Ramped-key keyboard for a handheld mobile communication device

Details Ramped-key keyboard for a handheld mobile communication device Ramped-key keyboard for a handheld mobile communication device

H - Electricity

01

H

H01H 13/84 (2006.01) H04W 88/02 (2009.01) G06F 3/02 (2006.01)

Patent

CA 2603762

Wireless handheld mobile communication device and keyboard therefore having a keyfield including a plurality of depressible keys arranged in rows that are distributed about a vertical centerline (Vc) of the keyboard. Each of the depressible keys has a top engagement surface of which an upper inboard portion is raised relative a lower outboard portion thereof. The top engagement surface of each of the depressible keys is ramped from the lower outboard portion toward the upper inboard portion. Each top engagement surface is generally crest shaped, with the apex of the crest running generally diagonally across the respective key with the rest of the top engagement surface failing away from the crest toward the upper outboard portion and the lower inboard portion of the key. The top engagement surface of each of the depressible keys terminates at an upper edge thereof in an elevated ridge down from which the balance of the respective top engagement surface slopes.

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