Patent ID: 8425443

Claim:
A limb support system, comprising: at least one joint configured to rotate about at least two axes that are orthogonal to each other, the at least one joint, comprising: a first electromagnet and a biasing device positioned generally opposite to each other with at least one first locking member positioned in between the first electromagnet and the biasing device, wherein the at least one first locking member is movable between a first locked position and a second unlocked position that enables rotation about a first axis; and a second locking member in mechanical connection with the first locking member, wherein the second locking member is positioned proximal to the first electromagnet and opposite to the first locking member, wherein the second locking member is configured to control rotation about a second axis that is orthogonal to the first axis; and at least one support arm extending from the joint and coupled to a support structure to support the at least one joint.