Abstract: An improved multi-function key assembly (12) is provided. The multi-function key assembly includes a printed circuit board substrate (28) having a popple dome switch array (26) mounted thereto. Attached to the substrate is a button member (22) adapted for use as a data input device for an electronic device. The button member has a central area or region (48) and a contoured peripheral surface (30) serving as a plurality of perimeter key regions (32-46). The contour of the peripheral surface provides a user with tactile feedback in determining the location of the various key regions. The button member additionally includes a plurality of plungers (54-68, 72) extending from its bottom surface (70). Each plunger corresponds to a specific key region and is capable of actuating a popple dome switch (154, 156) for that specific key region. The assembly may include a base (76) having a plurality of legs (90).

Abstract: The present invention relates to a snap arrangement comprising snap hooks (208) associated with a first housing (200) that snap over corresponding protrusions (111) in a second housing (100). The snap hooks preferably include an inclined portion (212) such that a finger (504) of a certain width of a removal tool (502) will force them apart to the deflection required for disassembly. Once the tool has been inserted beyond the elbow (213), the snap hook is not deflected any further regardless of the motion of the tool. This enables the tool to continue moving the front housing apart from the rear housing without further deflecting the snap hooks. This ensures that the snap hooks are never overstressed, that the front housing comes completely off of the rear housing every time, and that repeated disassembly will only minimally affect the strength of the snaps.