Pivot stopping mechanism

A linkage mechanism comprising:

• a base structure having a first pivot and a second pivot;
• a first linkage made from a first plate, the first linkage comprising:
• a first tab of the first plate bent to form a first angle with an unbent portion of the first plate, the first tab forming a first crease with the unbent portion of the first plate and having a first cavity and a second cavity, the first cavity rotationally engaging the first pivot of the base structure and the second cavity rotationally engaging a third pivot of a third linkage, wherein the first linkage is configured to rotate about the first pivot between a first position and a second position;
• and
• a second tab of the first plate bent to form a second angle with the unbent portion of the first plate, the second tab forming a second crease with the unbent portion of the first plate, wherein the second crease forms a non-zero angle with the first crease and wherein the second tab provides a first flat surface for engaging the base structure at the second position;
• a second linkage comprising a third cavity and a fourth cavity, the third cavity rotationally engaging the second pivot of the base structure and the fourth cavity rotationally engaging a fourth pivot of the third linkage;
• and
• the third linkage movable between a default position and a set position respectively corresponding to the first linkage being at the first position and the second position.