Mobile electronic device having member rotatable between first and second positions

A mobile electronic device comprising:

• a first member having a first surface and a second surface opposite to the first surface;
• a second member;
• and
• at least one linkage mechanism coupling the first member and the second member such that the device may be moved between a first position and a second position, the at least one linkage mechanism comprising:
• a linkage intermediate the first member and the second member;
• and
• a motion constraint mechanism that constrains movement of the first member with respect to the second member between the first and second positions to a pre-defined rotational and translational path, the rotational and translational path being defined by a rotation of the first member with respect to the second member and a counter-rotation of the linkage with respect to the second member, wherein
• the pre-defined path comprises about 180 degrees of rotation of the first member with respect to the second member with the first member being in approximately a same lateral position in both the first position and the second position.

An assembly for use with a mobile electronic device, the assembly comprising:

• a cover member;
• and
• at least one linkage mechanism that is attachable to the device,
• the at least one linkage mechanism, when attached to the device, interconnecting the device and the cover member such that the device and the cover member can be moved relative to each other between:
• a first position wherein the device overlies the cover member;
• a second position wherein the device overlies the cover member and the device is rotated about 180 degrees with respect to the first position,
• the at least one linkage mechanism comprising:
• a linkage intermediate the device and the cover member;
• and
• a motion constraint mechanism that constrains movement of the device with respect to the cover member between the first and second positions to a pre-defined rotational and translational path, the rotational and translational path being defined by a rotation of the device with respect to the cover member and a counter-rotation of the linkage with respect to the cover member.