Patent ID: 7146195

Claim:
A hinge device connecting a body member and a cover member, comprising: a horizontally extending open-close hinge unit to open and close the cover member and to hold the cover member at a first open position where a cellphone operation can be performed; a vertically extending pivotal hinge unit secured to the body member to pivot the cover member clockwise or counterclockwise; and a means to unlock the pivotal hinge unit by a cam mechanism to enable a pivotal motion of the pivotal hinge unit when the cover member is opened beyond the first open position where a cellphone operation can be performed; wherein the pivotal hinge unit includes: a cylindrical base mounting the open-close hinge unit; a stationary plate secured to the body member and pivotally supporting the base; a second disk secured to the stationary plate; a second spacer arranged to pivot with the base and also pivot relative to the second disk when the second spacer is unlocked from the stationary plate by the cam mechanism to enable a pivotal motion of the pivotal hinge unit, the second spacer being adapted to engage and be held to the second disk with a predetermined click by a biasing force at a pivotal position of the cover member 90 or 180 degrees clockwise or counterclockwise from the body member; and a stop means to stop the pivotal motion of the cover member at a pivotal position 180 degrees clockwise or counterclockwise from the body member.