Gary Leroy Durham

US Patent:

6707208, Mar 16, 2004

Filed:

May 12, 2003

Appl. No.:

10/436852

Inventors:

Gary L. Durham - Wichita KS 67205
Harold S. Durham - Wichita KS 67205

International Classification:

H02K 2112

US Classification:

31015637, 31015635, 31015636, 31015654, 31015684, 310261, 310268

Abstract:

An electric motor utilizing permanent magnets, wherein the permanent magnets produce a flux circuit in a first direction and shunt elements whereby the magnets and shunt elements rotate relative to each other wherein the shunt elements sequentially interrupt the magnet flux circuit to minimize generated flux circuits tending to rotate the motor in a direction opposite to the primary direction of motor rotation.

US Patent:

6853110, Feb 8, 2005

Filed:

Jul 24, 2002

Appl. No.:

10/202434

Inventors:

Gary L. Durham - Wichita KS, US
Harold Stephen Durham - Wichita KS, US

Assignee:

Tri-Seven Research, Inc. - Wichita KS

International Classification:

H02K001/12

US Classification:

310254, 310 49 R

Abstract:

The invention pertains to electrical machines of the electromagnetic type employing a stator and a rotatable such as electrical motors and generators, wherein magnetic forces imposed upon the rotor produce rotor rotation. Permanent magnets in either the stator or the rotor assembly are used to control the magnetic flux flow through the rotor in a radial direction, and the construction of the rotor and stator utilize poles which control the forces imposed upon the rotor such that the magnetic forces on the rotor primarily drive the rotor in its working direction, and counter-rotative forces which are common with conventional electrical machines are substantially eliminated by the utilization of flux directional control. Flux movement through the rotor is in a radial direction and high efficiencies and motor control are achieved.

US Patent:

7276831, Oct 2, 2007

Filed:

Dec 10, 2002

Appl. No.:

10/315845

Inventors:

Gary L. Durham - Stuart FL, US
Harold Stephen Durham - Wichita KS, US

Assignee:

Tri-Seven Research, Inc. - Stuart FL

International Classification:

H02K 1/00

US Classification:

310184, 310179, 310254

Abstract:

An electric motor having a plurality of rotor and stator poles, the poles of one element being alternately polarized and neutralized due to the use of direct current and alternating current windings on each pole. The poles of like current are connected in series, and the direct current poles are energized in synchronization with the alternating current poles.

US Patent:

7514832, Apr 7, 2009

Filed:

Feb 17, 2004

Appl. No.:

10/547940

Inventors:

Gary L. Durham - Stuart FL, US
Harold S. Durham - Stuart FL, US

Assignee:

Tri-Seven Research, Inc. - Wichita KS

International Classification:

H02K 21/38

US Classification:

310155, 310178, 310166

Abstract:

An electric motor having a single field rotor wherein the flux within the rotor is generated by magnetic means located at the end regions of the motor housing such that the flux within the motor rotor maintains a constant polarity.

US Patent:

7583000, Sep 1, 2009

Filed:

Aug 8, 2006

Appl. No.:

11/500559

Inventors:

Gary L. Durham - Stuart FL, US
Harold S. Durham - Stuart FL, US

Assignee:

Tri-Seven Research, Inc. - Wichita KS

International Classification:

H02K 1/00

US Classification:

310180, 310179

Abstract:

A starting system and method for starting a salient-poled-rotor electric motor having a stator with a plurality of spaced salient poles, a plurality of field coils of unchanging polarity, and a plurality of armature coils, wherein each field coil of the plurality of field coils at least partially overlaps an armature coil of the plurality of armature coils, and wherein variable excitement of the armature coils alternately creates a magnetic pole force in every other pole of the plurality of spaced salient poles of the stator. In such motors, the stator has a first position, wherein the rotor is in stasis with respect to the stator and torque between the rotor and the stator is substantially minimized, and a second position, wherein torque between the rotor and the stator is substantially maximized. A drive circuit provides current to the field coils and the armature coils. A start circuit is provided for regulating the drive circuit to vibrate the rotor to the second position.

US Patent:

7608967, Oct 27, 2009

Filed:

May 30, 2006

Appl. No.:

11/443945

Inventors:

Gary L. Durham - Stuart FL, US
Harold S. Durham - Stuart FL, US

Assignee:

Tri-Seven Research, Inc. - Wichita KS

International Classification:

H02K 31/00

US Classification:

310178, 310180, 310208, 310259

Abstract:

A single field rotor motor comprising a rotor mounted for rotation with respect to a stator. The stator has a plurality of stator poles each having a coil for creating a magnetic pole force. The rotor has a plurality of circumferentially spaced salient rotor poles formed thereon, wherein the flux within the rotor maintains a constant polarity. Magnetic means are provided for creating a pair of magnetic flux fields, wherein interaction of the pair of magnetic flux fields causes the magnetic flux fields to spray radially outward with respect to the rotor, thereby creating uniform magnetic polarity on the rotor poles. Circuit means are provided for alternately charging said stator coils to alternate the polarity of a given stator pole to alternately attract and repel said rotor poles to produce rotation of said rotor.

US Patent:

7719154, May 18, 2010

Filed:

Dec 18, 2008

Appl. No.:

12/337676

Inventors:

Gary L. Durham - Stuart FL, US
Harold S. Durham - Stuart FL, US

Assignee:

Tri-Seven Research, Inc. - Wichita KS

International Classification:

H02K 21/12

US Classification:

31015662, 310178, 3102611

Abstract:

A single field rotor motor comprising a rotor mounted for rotation with respect to a stator. The stator has a plurality of stator poles each having a coil for creating a magnetic pole force. The rotor has a plurality of circumferentially spaced salient rotor poles formed thereon, and has a first axial end and a second axial end. Magnetic means are provided for creating an unchanging, single polarity field on all of the rotor poles by inducing flux into the axial ends of the rotor. Circuit means for alternately charge said stator coils to alternate the polarity of a given stator pole to alternately attract and repel said rotor poles to produce rotation of said rotor.

US Patent:

20110084492, Apr 14, 2011

Filed:

Oct 11, 2010

Appl. No.:

12/902139

Inventors:

Gary L. Durham - Stuart FL, US
H. Stephen Durham - Port Saint Lucie FL, US

Assignee:

Just the 4 of Us, LLC - Wichita KS

International Classification:

F03D 9/00
F03D 7/02

US Classification:

290 55, 416 10

Abstract:

A vertical propeller system for capturing wind energy includes a coupling module coupled to a drive shaft to impart rotational energy to the drive shaft. The drive shaft rotates about a substantially vertical main axis. A first blade couples to the coupling module and rotates about a first blade axis. The first blade progresses through a first continuous, repeating sequence of first blade orientations, which include a first substantially vertical orientation and a first substantially horizontal orientation. The first substantially vertical orientation presents a maximal cross-section to a wind stream, the wind stream having a wind direction. The first substantially horizontal orientation presents a minimal cross-section to the wind stream. The first blade revolves around the coupling module in response to the wind stream, based on the first blade orientation, imparting rotational energy to the coupling module. The coupling module aligns the first continuous, repeating sequence of blade orientations so that the first substantially vertical orientation occurs at a predetermined angle to the wind direction.