Ramped-key keyboard for a handheld mobile communication device
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United States of America Patent
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May 28, 2013
Grant Date -
Jul 26, 2012
app pub date -
Mar 27, 2012
filing date -
Sep 25, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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 depressible key has a top engagement surface with an upper inboard portion that is raised relative a lower outboard portion thereof. The top engagement surface of each depressible key 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 a remaining surface falling 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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