Ronnie J Duncan

US Patent:

6430919, Aug 13, 2002

Filed:

Mar 2, 2000

Appl. No.:

09/517130

Inventors:

Ronnie J. Duncan - Entiat WA

Assignee:

Direct Propulsion Devices, Inc. - Wenatchee WA

International Classification:

F02K 702

US Classification:

60 3976, 60247, 60746

Abstract:

A shaped charge engine includes an annular blast-forming chamber formed by joining inner and outer housings. A central through hole in the inner housing allows exhaust gases to exit. The outer housing comprises a generally round disk with an inner conical concave depression and through holes for the insertion of fuel and ignition. The blast chamber is preferably taper-conical in shape, wider at the base, and gradually decreasing in cross-sectional area as it rises to the apex. This construction forms a circular pinch point or throat toward the apex that produces a primary or first stage compression area. A secondary compression zone is created at the apex of the outer housing, just beyond the throat, producing hypersonic gases as generally opposing exhaust streams collide and are forced to exit the through hole in the inner housing. The shaped charge engine may be used in a variety of applications, including as a pulsed direct propulsion device, as a turbine driver, or in a wide array of tools and appliances.

US Patent:

6484687, Nov 26, 2002

Filed:

May 7, 2001

Appl. No.:

09/850937

Inventors:

Ronnie J. Duncan - Entiat WA

Assignee:

Saddle Rock Technologies LLC - Wenatchee WA

International Classification:

F02B 5300

US Classification:

123241, 123200, 123246, 123249, 418191, 418165, 418166

Abstract:

A rotary machine having a housing with rotary components disclosed within. The rotary machine is configurable as an internal combustion rotary engine, an external combustion rotary engine, a gas compressor, a vacuum pump, a liquid pump, a drive turbine, or a drive turbine for expandable gases or pressurized liquids. The combustion engine employs a new thermal cycleâeliminating the Otto cycles internal compression of the combustion products as part of the cycle. The new combustion thermal cycle is intake, expansion and exhaust.

US Patent:

6658838, Dec 9, 2003

Filed:

Jun 14, 2002

Appl. No.:

10/172406

Inventors:

Ronnie J. Duncan - Entiat WA

Assignee:

Saddle Rock Technologies, LLC - Wenatchee WA

International Classification:

F02K 702

US Classification:

60 3976, 60247, 60746

Abstract:

A shaped charge engine includes an annular blast-forming chamber formed by joining inner and outer housings. A central through hole in the inner housing allows exhaust gases to exit. The outer housing comprises a generally round disk with an inner conical concave depression and through holes for the insertion of fuel and ignition. The blast chamber is preferably taper-conical in shape, wider at the base, and gradually decreasing in cross-sectional area as it rises to the apex. This construction forms a circular pinch point or throat toward the apex that produces a primary or first stage compression area. A secondary compression zone is created at the apex of the outer housing, just beyond the throat, producing hypersonic gases as generally opposing exhaust streams collide and are forced to exit the through hole in the inner housing. The collided streams propel a turbine rotor to turn a shaft.

US Patent:

6672275, Jan 6, 2004

Filed:

Sep 30, 2002

Appl. No.:

10/261102

Inventors:

Ronnie J. Duncan - Entiat WA 98822

International Classification:

F02B 5300

US Classification:

123241, 123200, 123246, 123249, 123 39, 418191, 418165, 418166

Abstract:

A rotary machine having a housing with rotary components disclosed within. The rotary machine is configurable as an internal combustion rotary engine, an external combustion rotary engine, a gas compressor, a vacuum pump, a liquid pump, a drive turbine, or a drive turbine for expandable gases or pressurized liquids. The combustion engine employs a new thermal cycleâeliminating the Otto cycles internal compression of the combustion products as part of the cycle. The new combustion thermal cycle is intake, expansion and exhaust.

US Patent:

6684825, Feb 3, 2004

Filed:

Sep 30, 2002

Appl. No.:

10/261097

Inventors:

Ronnie J. Duncan - Entiat WA

Assignee:

Saddle Rock Technologies, LLC - Wenatchee WA

International Classification:

F02B 7500

US Classification:

123 39, 123228, 123241, 123246, 123 61 R, 418191

Abstract:

A rotary machine having a housing with rotary components disclosed within. The rotary machine is configurable as an internal combustion rotary engine, an external combustion rotary engine, a gas compressor, a vacuum pump, a liquid pump, a drive turbine, or a drive turbine for expandable gases or pressurized liquids. The combustion engine employs a new thermal cycleâeliminating the Otto cycles internal compression of the combustion products as part of the cycle. The new combustion thermal cycle is intake, expansion and exhaust.

US Patent:

6782866, Aug 31, 2004

Filed:

Sep 30, 2002

Appl. No.:

10/261174

Inventors:

Ronnie J. Duncan - Entiat WA

Assignee:

Saddlerock Technologies LLC - Washington

International Classification:

F02B 5300

US Classification:

123241, 123200, 123246, 123249, 418227, 418166, 418165, 418191

Abstract:

A rotary machine having a housing with rotary components disclosed within. The rotary machine is configurable as an internal combustion rotary engine, an external combustion rotary engine, a gas compressor, a vacuum pump, a liquid pump, a drive turbine, or a drive turbine for expandable gases or pressurized liquids. The combustion engine employs a new thermal cycleâeliminating the Otto cycles internal compression of the combustion products as part of the cycle. The new combustion thermal cycle is intake, expansion and exhaust.

US Patent:

20040134184, Jul 15, 2004

Filed:

Oct 15, 2003

Appl. No.:

10/687452

Inventors:

Ronnie Duncan - Entiat WA, US

International Classification:

F02G003/00

US Classification:

060/039760

Abstract:

A shaped charge engine includes multiple blast forming chambers, each chamber having a primary convergence zone that is variably shape to alter the shape of the exhaust gas emanating from each chamber. Thereafter, each chamber's variably shaped exhaust is merged at a secondary convergence zone into a shape further modified to alter the thrust characteristics of the exiting exhaust gases from the shaped charged engine.

US Patent:

20040159306, Aug 19, 2004

Filed:

Nov 25, 2003

Appl. No.:

10/722140

Inventors:

Ronnie Duncan - Entiat WA, US

International Classification:

F02B053/04

US Classification:

123/229000, 123/232000, 418/165000, 418/166000

Abstract:

A rotary machine configured to product rotary power by igniting intake products that are not compressed to produce combustive products, directing the pressure produced by combustive products to a rotatable expansion ring that rotates a distance proportional to the pressure and exhausting the combustive products from the rotary machine.