Patent ID: 7727406

Claim:
A water sterilizer, comprising: an ultraviolet light source electrically connected to an electrical power source; a light-protective housing having a lower housing portion and an upper housing portion, said housing encasing said ultraviolet light source and having an inlet and an outlet, said housing and said ultraviolet light source forming a passage bounded by at least an interior surface of said housing and an exterior surface of said ultraviolet light source, said lower housing portion having a lower plurality of planar ridges extending into said passage and said upper housing portion having an upper plurality of planar ridges extending into said passage, each of said lower and upper plurality of planar ridges having a first surface extending from said housing opposite a second surface extending from said housing and having an edge surface therebetween, said first surface being parallel to said second surface; and a pump to draw said water into said housing to expose said water to ultraviolet light.