Patent References 1165240 3528704 3713699 3807632 Arrangement for centering the impellers in a multi-stage centrifugal pump Cavitating liquid jet assisted drill bit and method for deep-hole drilling Enhancing liquid jet erosion Cavitating liquid jet assisted drill bit and method for deep-hole drilling Enhancing liquid jet erosion Nozzle assembly for an earth boring drill bit InventorApplicationNo. 629214 filed on 12/18/1990US Classes:239/101, WITH MEANS FOR FLUCTUATING FLOW OR PRESSURE OF FLUID SUPPLIED TO DISTRIBUTOR MEANS175/67, Boring by fluid erosion175/424, MISCELLANEOUS (E.G., EARTH-BORING NOZZLE)239/590Having interior filter or guideExaminersPrimary: Kashnikow, AndresAssistant: Trainor, Christopher G. Attorney, Agent or FirmForeign Patent References
International ClassE21B 007/18AbstractA cavitating jet nozzle is disclosed for producing cavitation in a pressurized fluid such as a water used to clean a surface. The cavitating jet nozzle includes a pin received at a central position which lowers the pressure of the pressurized fluid such that cavitation bubbles form in the fluid. The pin is free-floating relative to a securing member which retains the pin in the nozzle, and is thus self-centering. The inventive cavitating nozzle is easily maintained since the pin is self-centering and need not be repeatedly centered. The pin preferably has an end face upstream of an outlet portion of the nozzle.Other References
Field of SearchHaving interior filter or guideChamber-like deflector Deflector and terminal flow element Of discharge modification of flow varying Foraminous or apertures member Plural fluid directing means And remaining opposite side walls converging Spray fluid operated WITH MEANS FOR FLUCTUATING FLOW OR PRESSURE OF FLUID SUPPLIED TO DISTRIBUTOR MEANS MISCELLANEOUS (E.G., EARTH-BORING NOZZLE) Boring by fluid erosion With pressurized fluid or fluid manipulation With spray or jet supplying and/or applying means | |