US Patent 7624757 Dual function handles for a faucet assembly

A faucet assembly is operable automatically or mechanically to facilitate control in a non-powered or motor failure condition. In the automatic control position, separate and automatic control of fluid flow and temperature is provided by respective actuation of first and second handles. In the manual control position, the first and second handles are moved axially to decouple electric motors from corresponding fluid control valves. Such axial movement of the first and second handles concurrently couples the handles mechanically to the corresponding fluid control valves to provide the desired manual actuation.