Patent ID: 6862754

Claim:
A urinal having a dual-phase flush cycle, comprising: a fixture having a rear wall, said rear wall having a mounting surface and a urinal surface with an elongate channel defined therebetween along a longitudinal extent of said rear wall, coextensive sidewalls protruding normally outwardly from said urinal surface and terminating at a curved bowl portion of said fixture, each sidewall having a generally planar inner surface in parallel alignment with an inner surface of a sidewall spaced therefrom, said urinal surface and said sidewall inner surfaces defining an ingress for an internally defined containment area in which at least one atmospheric vacuum breaker (AVB) and at least one valve means are disposed, said valve means being in electrical communication with a sensor and having a first fluid discharge port in fluid communication with the bowl portion and a second fluid discharge port, wherein, upon detection of the user, said sensor transmits a first signal to said valve means to initiate a first water exchange phase of the flush cycle during which said valve means discharges water through said first fluid discharge port along said elongate channel to remove waste from said bowl portion, and said sensor, after a predetermined delay, transmits a subsequent second signal to said valve means to initiate a wall-scouring phase of the flush cycle during which said valve means discharges water from said second fluid discharge port along said urinal surface.