Patent ID: 6932285

Claim:
For use in abrasive water jet cutting systems, an orifice body with a mixing cavity, comprising: a. a metal body having an outer cylindrical surface and a central bore, parallel to the cylindrical surface, with an upstream direction and a downstream direction; b. a jewel having an orifice mounted in the bore in the metal body, a portion of the central bore downstream of the jewel forming a mixing cavity; and c. an inclined bore for abrasive material passing from the outer cylindrical surface to the central bore at an incline and joining the central bore downstream of the jewel at an angle such that abrasive material is redirected by substantially less than 90 degrees as it passes from the inclined bore to the central bore that forms the mixing cavity, d. a rotational alignment slot in the cylindrical surface, parallel to the cylindrical surface, opposite the bore for abrasive material, extending from an upstream end of the cylindrical surface to a downstream end of the cylindrical surface.