Patent attributes
A phase-locked pivot assembly includes a support component. A first shaft and a second shaft pivot relative to the support component. A first annular body is configured to rotate with the first shaft. The first annular body includes a first outer annular surface and a first sunken arc portion. A second annular body is configured to rotate with the second shaft and corresponds to the first annular body. The second annular body includes a second outer annular surface and a second sunken arc portion. The first sunken arc portion and the second outer annular surface are matched and selectively contact each other to lock the first shaft. The second sunken arc portion and the first outer annular surface are matched and selectively contact each other to lock the second shaft.
