Patent ID: 8000741
Filing Date: 2011-08-16
Classification: G06F,H04M

Abstract:
1. A handheld wireless communication device, said device comprising: a display; a navigation tool a key field composed of a plurality of keys selected from a plurality of alphanumeric input keys and at least one menu key, said alphanumeric input keys comprising a plurality of alphabetic keys having letters associated therewith; a microprocessor; a plurality of said keys of said key field each being a resiliently depressible key having an upper surface presenting a primary engagement surface for receiving an operator's touch-engagement when depressing the respective resiliently depressible key; and at least one of said resiliently depressible keys further comprising a chamfer surface descending down from the primary engagement surface of said at least one resiliently depressible key toward a vertically adjacent resiliently depressible key, said chamfer surface defining a finger clearance space above said at least one resiliently depressible key whereby inadvertent depression of said at least one resiliently depressible key is avoided when the adjacent resiliently depressible key is depressed; a plurality of said resiliently depressible keys are parallelogram-shaped in a top plan view and each of said plurality of parallelogram-shaped resiliently depressible keys is approximately one-half primary engagement surface and approximately one-half chamfer surface in the top plan view thereof; and a plurality of said resiliently depressible keys are substantially U-shaped in a top plan view and each of said plurality of substantially U-shaped resiliently depressible keys is approximately one-half primary engagement surface and approximately one-half chamfer surface in the top plan view thereof, wherein each of said plurality of U-shaped resiliently depressible keys has a top half and a bottom half, said top half being closer to the display than the bottom half, and wherein the top half is the chamfer surface, and the bottom half is the primary engagement surface.