Circular structures for rotation of backing relative to base

A rotational mating assembly comprising:

• a base circular structure defined by a hole extending through a base plate of a first component, the base circular structure comprising a plurality of protruding brackets, organized in a circular formation extending inwardly from a peripheral edge thereof, separated by a plurality of bracket gaps, and a tab defined by the circular formation of the brackets;
• a backing circular structure extending from a base plate of a second component, the backing circular structure comprising a plurality of keys corresponding to the bracket gaps, organized in a corresponding circular formation extending outwardly from a peripheral edge thereof, separated by a plurality of key gaps corresponding to the plurality of brackets, and a slot defined between the circular formation of the keys and the base plate;
• wherein the first component and the second component are rotatably attached by the brackets and the keys being aligned and inserted through the key gaps and the bracket gaps such that the tab is rotatably disposed within the slot, and wherein the brackets, the keys, the bracket gaps, and the key gaps vary in size in a circumferential direction to permit removal and attachment of the display backing to the rotation base at one rotational orientation;
• a partial circular groove defined by one of the first component and the second component and corresponding to a range of rotation of the second component relative to the first component between landscape and portrait orientations;
• and
• a protrusion defined by another of the first component and the second component, and movably fitting within the partial circular groove;
• wherein, in the orientation wherein the keys and corresponding key gaps align, the partial circular groove is not aligned with the protrusion and the tab is rotated within the slot to a different rotational orientation to align and insert the protrusion within the partial circular groove.

A method comprising:

• providing a rotation base having a base plate and a base circular structure defined by a hole extending therethrough, the base circular structure comprising a plurality of protruding brackets, organized in a circular formation extending inwardly from a peripheral edge thereof, separated by a plurality of bracket gaps, and a tab defined by the circular formation of the brackets;
• providing a display backing having a base plate and a backing circular structure extending therefrom, the backing circular structure comprising a plurality of keys corresponding to the bracket gaps, organized in a corresponding circular formation extending outwardly from a peripheral edge thereof, separated by a plurality of key gaps corresponding to the plurality of brackets, and a slot defined between the circular formation of the keys and the base plate;
• providing a partial circular groove defined by one of the rotation base and the display backing and corresponding to a range of rotation of the display backing relative to the rotation base between landscape and portrait orientations;
• providing a protrusion defined by the other of the rotation base and the display backing movably fitting within the partial circular groove;
• aligning the backing circular structure of the display backing at a rotational orientation relative to the base circular structure of the rotation base at which the backing circular structure is rotatably attachable to the base circular structure, wherein the rotation base and the display backing are rotatably attached by the brackets and the keys being aligned and inserted through the key gaps and the bracket gaps such that the tab is rotatably disposed within the slot and wherein the brackets, the keys, the bracket gaps, and the key gaps vary in size in a circumferential direction to permit removal and attachment of the display backing to the rotation base at one rotational orientation;
• rotating the display backing relative to the rotation base to a different rotational orientation to align and movably fit the protrusion within the partial circular groove;
• and
• rotating the display backing between the landscape and portrait orientations relative to the rotation base, as permitted by rotatable attachment of the backing circular structure to the base circular structure.