U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Cavitating jet nozzle

Patent 5086974 Issued on February 11, 1992. Estimated Expiration Date: Icon_subject December 18, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1165240

3528704

3713699

3807632

Arrangement for centering the impellers in a multi-stage centrifugal pump
Patent #: 4172690
Issued on: 10/30/1979
Inventor: Kuntz

Cavitating liquid jet assisted drill bit and method for deep-hole drilling
Patent #: 4262757
Issued on: 04/21/1981
Inventor: Johnson, Jr. ,   et al.

Enhancing liquid jet erosion
Patent #: 4389071
Issued on: 06/21/1983
Inventor: Johnson, Jr. ,   et al.

Cavitating liquid jet assisted drill bit and method for deep-hole drilling
Patent #: 4391339
Issued on: 07/05/1983
Inventor: Johnson, Jr. ,   et al.

Enhancing liquid jet erosion
Patent #: 4474251
Issued on: 10/02/1984
Inventor: Johnson, Jr.

Nozzle assembly for an earth boring drill bit
Patent #: 4542798
Issued on: 09/24/1985
Inventor: Madigan

More ...

Inventor

Application

No. 629214 filed on 12/18/1990

US 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 guide

Examiners

Primary: Kashnikow, Andres
Assistant: Trainor, Christopher G.

Attorney, Agent or Firm

Foreign Patent References

  • 655286 DE2 02/13/2012
  • 403191 CH 06/13/1966

International Class

E21B 007/18

Abstract

A 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

  • Cleaning and Cutting with Self-Resonating Pulsed Water Jets, Hydronautics, Incorporated, Laurel, Md. 20707
  • The Centerbody Cavijet, Tracor Hydronautics, Laurel, Md. 20707
  • Industrial Applications for Rotating Nozzle Technology, M. T. Gracey NLB Corporation, Wixom, Mich. 48096
  • Rapid Cutting of Pavement with Cavitating Water Jets, Andrew F. Conn Tracor Hydronautics, Inc. Laurel, Md. U.S.A
  • Some Unusual Applications for Cavitating Water Jets, Andrew F. Conn Tracor Hydronautics, Inc., Laurel, Md., U.S.A
  • An Automated Explosive Removal System Using Cavitating Water Jets, Andrew F. Conn, Tracor Hydronautics, Inc. Laurel, Md., U.S.A
  • A Material Failure Model for Pulsed Jet Impact, Thomas J. Labus, University of Wisconsin-Parkside Engineering Science
  • Research Facilities Using Cavitating Water Jet Techniques to Test Materials, Michael T. Gracey and Andrew F. Conn, Tracor Hydronautics
  • Cavitation Erosion Used for Material Testing, Gracey and Conn, Jet Technology Systems Division of Tracor Hydronautics, Inc
  • Sandroid Systems, Inc., Division of Mobile Robot Corporation Gary K. Sweet, Vice President
  • The Application of High Pressure Water Jet Technology, David Summers University of Missouri-Rolla, May 23, 198
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