Donnell L Dunn

US Patent:

6499565, Dec 31, 2002

Filed:

Mar 15, 2000

Appl. No.:

09/525818

Inventors:

Edward L. Coyle - Fargo ND
Donnell L. Dunn - Fargo ND

Assignee:

Case Corporation - Racine WI

International Classification:

F01M 500

US Classification:

184 612, 74606 A, 184 622

Abstract:

A work vehicle includes a frame and an axle assembly coupled to the frame. The axle assembly includes a first axle shaft and a first axle housing, with the first axle shaft disposed substantially within the first axle housing; a first wheel coupled to the first axle assembly; an axle lubricating fluid disposed within the first axle housing; and a first axle cooling device disposed within the first axle housing, in contact with at least a portion of the lubricating fluid, and including a first coil. Also disclosed is a method of cooling an axle assembly of a work vehicle. The method includes steps of removing heat from the lubricating fluid by placing the lubricating fluid in contact with the outer surface of a coil, and removing the heat from the inner surface of the coil by circulating the cooling fluid through the passage.

US Patent:

6871726, Mar 29, 2005

Filed:

Nov 5, 2002

Appl. No.:

10/288664

Inventors:

Edward L. Coyle - Fargo ND, US
Donnell L. Dunn - Fargo ND, US

Assignee:

CNH America LLC - New Holland PA

International Classification:

F01M005/00

US Classification:

184 622, 1841041, 74606 A

Abstract:

A work vehicle includes a frame and an axle assembly coupled to the frame. The axle assembly includes a first axle shaft and a first axle housing, with the first axle shaft disposed substantially within the first axle housing; a first wheel coupled to the first axle assembly; an axle lubricating fluid disposed within the first axle housing; and a first axle cooling device disposed within the first axle housing, in contact with at least a portion of the lubricating fluid, and including a first coil. Also disclosed is a method of cooling an axle assembly of a work vehicle. The method includes steps of removing heat from the lubricating fluid by placing the lubricating fluid in contact with the outer surface of a coil, and removing the heat from the inner surface of the coil by circulating the cooling fluid through the passage.

US Patent:

6907958, Jun 21, 2005

Filed:

Mar 17, 2004

Appl. No.:

10/802619

Inventors:

Edward L. Coyle - Fargo ND, US
Donnell L. Dunn - Fargo ND, US

Assignee:

CNH America LLC - New Holland PA

International Classification:

F01M005/00

US Classification:

184 612, 184 622, 74606 A

Abstract:

A work vehicle includes a frame and an axle assembly coupled to the frame. The axle assembly includes a first axle shaft and a first axle housing, with the first axle shaft disposed substantially within the first axle housing; a first wheel coupled to the first axle assembly; an axle lubricating fluid disposed within the first axle housing; and a first axle cooling device disposed within the first axle housing, in contact with at least a portion of the lubricating fluid, and including a first coil. Also disclosed is a method of cooling an axle assembly of a work vehicle. The method includes steps of removing heat from the lubricating fluid by placing the lubricating fluid in contact with the outer surface of a coil, and removing the heat from the inner surface of the coil by circulating the cooling fluid through the passage.

US Patent:

6926113, Aug 9, 2005

Filed:

Oct 22, 2003

Appl. No.:

10/690907

Inventors:

Matthew J. Hennemann - Burlington IA, US
David R. Natzke - Fargo ND, US
Donnell L. Dunn - Fargo ND, US
Roger D. Mickelson - West Burlington IA, US

Assignee:

CNH America LLC - New Holland PA

International Classification:

B62D013/00

US Classification:

180418, 180417, 60422

Abstract:

An articulated wheel loader provides a cushioned deceleration at the limits of its turning to the left and to the right by reducing fluid flow through a hydraulic steering cylinder as the articulated frames approach abutment. The throttled fluid flow causes a variable displacement pump to de-stroke, which further cushions the deceleration.

US Patent:

7028810, Apr 18, 2006

Filed:

Jan 21, 2004

Appl. No.:

10/761554

Inventors:

Edward L. Coyle - Lakeland FL, US
Donnell L. Dunn - Fargo ND, US

Assignee:

CNH America LLC - New Holland PA

International Classification:

F01M 5/00

US Classification:

184 612, 184 622, 74606 A

Abstract:

A work vehicle includes a frame and an axle assembly coupled to the frame. The axle assembly includes a first axle shaft and a first axle housing, with the first axle shaft disposed substantially within the first axle housing; a first wheel coupled to the first axle assembly; an axle lubricating fluid disposed within the first axle housing; and a first axle cooling device disposed within the first axle housing, in contact with at least a portion of the lubricating fluid, and including a first coil. Also disclosed is a method of cooling an axle assembly of a work vehicle. The method includes steps of removing heat from the lubricating fluid by placing the lubricating fluid in contact with the outer surface of a coil, and removing the heat from the inner surface of the coil by circulating the cooling fluid through the passage.

US Patent:

39554740, May 11, 1976

Filed:

Mar 19, 1975

Appl. No.:

5/559746

Inventors:

Donnell L. Dunn - Terre Haute IN

Assignee:

J. I. Case Company - Racine WI

International Classification:

F15B 1306
F15B 1309

US Classification:

91414

Abstract:

A fluid pressure system having a plurality of pumps, valves, and fluid-pressure responsive units. These items are interconnected by fluid lines, and check valves are arranged to control the fluid in only certain directions in some portions of the lines. The entire arrangement permits the utilization of one pump for a respective fluid-pressure responsive unit, or all of the pumps can be directed to one of the fluid-pressure responsive units.

US Patent:

41470931, Apr 3, 1979

Filed:

Mar 4, 1977

Appl. No.:

5/774235

Inventors:

Donnell L. Dunn - Terre Haute IN

Assignee:

J. I. Case Company - Racine WI

International Classification:

F15B 1100
F15B 1300

US Classification:

91510

Abstract:

The self-actuating fluid holding system includes a fluid pump and two fluid valves and two fluid motors all fluid-flow connected together. The valves are arranged to sense the proportionate flow therethrough and to the two motors, and when the flow is out of proportion, such as when one of the connecting lines or a connection breaks to permit the fluid to leak, then the valves have shut off closures which protect the system against fluid leakage.

US Patent:

44176333, Nov 29, 1983

Filed:

Mar 18, 1981

Appl. No.:

6/245092

Inventors:

Donnell L. Dunn - Terre Haute IN

Assignee:

J. I. Case Company - Racine WI

International Classification:

B62D 506

US Classification:

180132

Abstract:

A hydraulic system having a pump, a power steering valve, a loader control valve and a pressure compensating valve is used to supply fluid under pressure to one or more hydraulic actuators of an earthworking machine to prevent repositioning of those actuators due to hydraulic leakage or leak-down. The pressure compensating valve has two outlets. One outlet, the priority outlet, is joined to the power steering valve, the other outlet is joined to the loader control valve. The pressure compensating valve includes a load sensing line joined to the power steering valve. A hydraulic connection is provided between the priority output of the pressure compensating valve to those hydraulic actuators which are to be protected against leakdown. This connection includes a check valve to prevent reverse flow. Whenever the steering valve is actuated, the priority output from the pressure compensating valve is thus applied to those hydraulic actuators of interest.