Mark A Leclair

US Patent:

6932914, Aug 23, 2005

Filed:

Oct 1, 2002

Appl. No.:

10/263067

Inventors:

Mark L. LeClair - Buxton ME, US

International Classification:

B44C001/22

US Classification:

216 52, 216 56, 216 83, 216 94, 2191212, 21912143, 21912169, 606 2

Abstract:

The present invention discloses a method and apparatus for the directed formation of a re-entrant micro-jet formed upon the collapse of a working cavitation bubble formed proximate to a work surface. A target bubble, formed between the work surface and the working cavitation bubble, is utilized to direct the re-entrant micro-jet to the work surface.

US Patent:

6960307, Nov 1, 2005

Filed:

Aug 26, 2002

Appl. No.:

10/229341

Inventors:

Mark L. LeClair - Buxton ME, US

International Classification:

B44C001/22

US Classification:

216 52, 216 53, 2191212, 21912143, 21912169, 606 2

Abstract:

The present invention discloses a method and apparatus for the directed formation of a re-entrant micro-jet formed upon the collapse of a cavitation bubble formed proximate to a work surface placed in a fluid. A mask containing an orifice, placed between the work surface and the cavitation bubble, is utilized to direct the re-entrant micro-jet to the work surface. The cavitation bubble may be formed in the desired location by focusing an energy flow proximate to the mask. The energy flow may be obtained by radiation from laser, x-ray, or electrical discharge sources.

US Patent:

7297288, Nov 20, 2007

Filed:

Jul 5, 2005

Appl. No.:

11/175878

Inventors:

Mark L. LeClair - Buxton ME, US

International Classification:

B44C 1/22

US Classification:

216 83, 216 52, 216 56

Abstract:

The present invention discloses a method and apparatus for the directed formation of a re-entrant micro-jet formed upon the collapse of a working cavitation bubble formed proximate to a work surface. A target bubble, formed between the work surface and the working cavitation bubble, is utilized to direct the re-entrant micro-jet to the work surface.

US Patent:

7517430, Apr 14, 2009

Filed:

Jul 5, 2005

Appl. No.:

11/175778

Inventors:

Mark L. LeClair - Buxton ME, US

International Classification:

H01B 13/00
C23C 16/00

US Classification:

1563453, 134184, 134 13, 118721

Abstract:

The present invention discloses a method and apparatus for the directed formation of a re-entrant micro-jet formed upon the collapse of a cavitation bubble formed proximate to a work surface placed in a fluid. A mask containing an orifice, placed between the work surface and the cavitation bubble, is utilized to direct the re-entrant micro-jet to the work surface. The cavitation bubble may be formed in the desired location by focusing an energy flow proximate to the mask. The energy flow may be obtained by radiation from laser, x-ray, or electrical discharge sources.

US Patent:

55225535, Jun 4, 1996

Filed:

Sep 29, 1994

Appl. No.:

8/314817

Inventors:

Mark L. LeClair - Scarborough ME
John A. Higgins - Berwick ME

Assignee:

Kady International - Scarborough ME

International Classification:

B02C 1840

US Classification:

241 21

Abstract:

A device for producing suspensions of finely divided matter includes a dispersion mill of the type with a slotted rotor and stator. The stator has chamfers on the leading edges to permit fluid flow from the rotor into the stator which is longer in duration, of greater volume, and along a path resulting in an impact angle of 90 degrees. The impact angle generates stagnation forces of a magnitude that results in cavitation when the fluid accelerates away from the impact zone. Subsequent discharges of fluid from rotor to stator slot creates increased ambient pressure around the vapor cavity accelerating cavity collapse and generating high pressures through accelerated collapse and through reentrant jet effects. Shock waves are transmitted locally which disintegrate particulates such as cells.