US Patent 11300226 Faucet with safety interlock for near-boiling and chilled water

A two-way or four-way water faucet dispenses near-boiling water on demand but has a safety interlock. A control valve assembly is attached to the faucet. The interlock uses two disks pressed into contact, each having a single projecting sector. One disk is fixed to the valve body. The other disk, fixed to the handle, slides against the first. The disks must be pulled apart by sliding the handle while it is being turned to superimpose the sectors and turn the control valve, connecting the faucet to the vented near-boiling water supply. A reed switch inside the fixed sector is activated by a magnet inside the rotatable sector and activates a near-boiling water pump.