Jeffrey D Witwer

US Patent:

6823955, Nov 30, 2004

Filed:

Jun 27, 2001

Appl. No.:

09/893056

Inventors:

Stanley Kermit Hall - Godwin NC
Neil Vincent Harber - Benson NC
Robert Alan Henson - Willow Springs NC
Jennifer Lynn Jaramillo - Raleigh NC
Jeffrey David Witwer - Clayton NC

Assignee:

Deere Company - Moline IL

International Classification:

B60K 1100

US Classification:

180 681, 180 682, 180 683, 180 692

Abstract:

An elongated air intake screen is provided for vehicles such as commercial mowers that operate in conditions having substantial airborne foreign materials that tend to clog the screen. The exterior surface of the screen is provided with intake openings throughout its 360 degree surface to draw air over a substantial area. It is located at the upper edge of the vehicle to separate it from the cutting decks and area where airborne grasses and similar foreign materials are encountered. Air drawn into the screen is used to cool the engine and hydraulic fluid heat exchangers and provide for engine combustion needs.

US Patent:

7370718, May 13, 2008

Filed:

Mar 28, 2005

Appl. No.:

11/091458

Inventors:

Jeffrey David Witwer - Clayton NC, US
Stanley Kermit Hall - Autryville NC, US
Jennifer Lynn Jaramillo - Raleigh NC, US
Roger Howard Tesch - Cary NC, US
John Louis Bocksnick - Willow Spring NC, US

Assignee:

Deere & Company - Moline IL

International Classification:

B62D 25/12
B62D 25/10

US Classification:

180 692, 180 681, 180 686

Abstract:

A hood covers an internal combustion engine on the rear of a grass mowing machine. The hood has a top surface with a plurality of air intake openings recessed below the top surface, and an integral air duct. The integral air duct extends over the engine between the air intake openings and an air inlet side of the radiator and/or oil cooler adjacent the rear of the grass mowing machine. The air intake openings closest to the air inlet side of the radiator and/or oil cooler are dimensioned to limit the air intake velocity and prevent buildup of debris on screens or grilles over the openings.

US Patent:

7437864, Oct 21, 2008

Filed:

Feb 16, 2007

Appl. No.:

11/676087

Inventors:

Todd Allen Link - Apex NC, US
Jeffrey David Witwer - Clayton NC, US
Jason Mclamb Honeycutt - Dunn NC, US
Brian Keith Pearman - Apex NC, US
Ronald Lee Reichen - Raleigh NC, US

Assignee:

Deere & Company - Moline IL

International Classification:

A01D 34/00

US Classification:

56 155

Abstract:

A shift mechanism for trim mower cutting units includes a pair of slidable carriers. Each slidable carrier can slide along a pair of guide rods mounted to a mower frame. A hydraulic extension cylinder is connected to each slidable carrier and independently extends to move the slidable carrier laterally outward from the mower frame or retracts to move the slidable carrier laterally inward in relation to the mower frame. A hydraulic shifting cylinder is mounted between the two extension cylinders and extends to shift both slidable carriers laterally inward toward a center position, and retracts to move both slidable carriers laterally outward toward an extended position.

US Patent:

7654066, Feb 2, 2010

Filed:

Sep 11, 2008

Appl. No.:

12/208566

Inventors:

Todd Allen Link - Apex NC, US
Jeffrey David Witwer - Clayton NC, US
Jason Mclamb Honeycutt - Dunn NC, US
Brian Keith Pearman - Apex NC, US
Ronald Lee Reichen - Raleigh NC, US

Assignee:

Deere & Company - Moline IL

International Classification:

A01D 34/00

US Classification:

56 155

Abstract:

A shift mechanism for trim mower cutting units includes a pair of slidable carriers. Each slidable carrier can slide along a pair of guide rods mounted to a mower frame. A hydraulic extension cylinder is connected to each slidable carrier and independently extends to move the slidable carrier laterally outward from the mower frame or retracts to move the slidable carrier laterally inward in relation to the mower frame. A hydraulic shifting cylinder is mounted between the two extension cylinders and extends to shift both slidable carriers laterally inward toward a center position, and retracts to move both slidable carriers laterally outward toward an extended position.

US Patent:

7971416, Jul 5, 2011

Filed:

Mar 9, 2005

Appl. No.:

11/075896

Inventors:

Stanley Kermit Hall - Autryville NC, US
Jeffrey David Witwer - Clayton NC, US
James Edward Muse - Raleigh NC, US
Roger Howard Tesch - Cary NC, US
John Louis Bocksnick - Willow Spring NC, US

Assignee:

Deere & Company - Moline IL

International Classification:

A01D 69/00

US Classification:

56 119, 248638

Abstract:

A mounting assembly to mount the base of a hydraulic motor on a mower deck includes a cast iron mounting plate having stiffening structures around the perimeter and spanning the perimeter, and rubber isolators between the mounting plate and the mower deck.

US Patent:

20020069624, Jun 13, 2002

Filed:

Dec 13, 2000

Appl. No.:

09/737159

Inventors:

Jennifer Jaramillo - Raleigh NC, US
Jeffrey Witwer - Clayton NC, US
Robert Henson - Willow Springs NC, US

International Classification:

B01D046/00

US Classification:

055/385300, 055/482000, 055/493000, 055/497000, 055/502000

Abstract:

An air filtering enclosure for a vehicle to minimize the amount of debris entering the radiator of the vehicle is provided. The enclosure consists of a shell having a set of interfitting interior and exterior members. Mounted with the interior member are clips designed to mate with a series of compatibly arranged brackets on the vehicle frame. Attached opposite the clips are handles which a user may grasp to easily install and remove the shell from a vehicle. Interior and exterior members form a frame which encases sheets of perforated screening to restrict the introduction of debris into the radiator. The shell is completed with a rubber seal enabling tight sealing of the enclosure to the vehicle on which it is attached.