Patent ID: 8248764

Claim:
A portable electronic device comprising: a first housing portion pivotal about a first pivot axis, the first housing portion including an outer side edge formed partially about the pivot axis, a first cam surface disposed on the outer side edge of the first housing portion; a first indexing member disposed on the first housing portion; a second housing portion pivotal about a second pivot axis, the second housing portion including an outer side edge formed partially about the pivot axis, a second cam surface disposed on the outer side edge of the second housing portion; wherein a spacing between the first and second pivot axes changes resulting from engagement between the first and second cam surfaces as the first and second housing portions are pivoted about the corresponding first and second pivot axes; a second indexing member disposed on the second housing portion; a biasing member biasing the first and second cam surfaces into engagement during pivoting of the first and second housing portions, the biasing member biasing the first and second indexing members into engagement during pivoting of the first and second housing portions; and a first spring interconnecting one of a first shaft portions and one of a second shaft portions, and a second spring interconnecting the other of the first shaft portions and the other of the second shaft portions; wherein the first and second housing portions are configured in a fixed angular orientation when complementary portions of the first and second cam surfaces are engaged.