Patent ID: 9447571
Filing Date: 2016-09-20
CPC Classification: E03D,E03F

Claim Text:
1. An automatic flushing mechanism for a toilet that includes a water tank and a flush valve configured to be lifted from a bottom of the water tank to release flush water from the water tank, the automatic flushing mechanism comprising: an electronic control box containing a motor; an intermittent motion gear coupled to a rotation shaft of the motor and configured to rotate when the motor is operated, the intermittent motion gear comprising a toothed portion including a plurality of gear teeth; an intermittent motion pendulum rod comprising a first end pivotally attached to the electronic control box via a rotation shaft, a second end coupled to the flush valve, and a curved rack including a plurality of rack teeth which mesh with the gear teeth of the intermittent motion gear; wherein rotation of the intermittent motion gear causes the curved rack to be lifted upward, thereby rotating the intermittent motion pendulum rod about the rotation shaft and lifting the flush valve; wherein the intermittent motion gear comprises a toothless top portion along a rim of the intermittent motion gear in series with the toothed portion; wherein a bottom tooth of the curved rack remains in contact with and slides along the toothless top portion as the intermittent motion gear rotates after the bottom tooth disengages from the toothed portion.