Magnetic or electrostatic pivoting of a mobile timepiece element

A timepiece sub-assembly comprising:

• a mobile timepiece element including at least a first annular peripheral surface of revolution about a pivot axis of the mobile element;
• and
• a device for guiding pivoting about a theoretical axis of a timepiece mechanism;
• wherein the first peripheral surface is planar and magnetically or electrically charged;
• and
• the device further comprising either a first magnetically or respectively electrically charged ring, or at least three first magnetically or respectively electrically charged surfaces, parallel to each other, positioned opposite to and above the first peripheral surface to repulse the first peripheral surface at a first interface, to maintain the mobile element in axial levitation in a direction of the theoretical axis,
• wherein the one mobile timepiece element includes the second annular peripheral surfaces of revolution about the pivot axis of the mobile element which is parallel to and opposite to the first annular peripheral surface of revolution on either side of the mobile element,
• wherein the second peripheral surface is magnetically or electrically charged, and
• wherein the device further comprises either a second magnetically or respectively electrically charged ring, or at least three second magnetically or respectively electrically charged surfaces, parallel to each other, positioned opposite to and below the second peripheral surface to repulse the second peripheral surface, at a second interface, to maintain the mobile element in axial levitation in the direction of the theoretical axis, wherein the first peripheral surface and the second peripheral surface are tilted with respect to pivot axis such that an axis of the first peripheral surface and the second peripheral intersects the pivot axis at a cone angle to form a cone.