DEREK ALAN LITCHFIELD
Pilots at Bellingham Rd, Macomb, IL
License number
Illinois A4971842
Issued Date
Nov 2013
Expiration Date
Nov 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
625 Bellingham Rd, Macomb, IL 61455
Professional information
Fertilizer Coulter With Self Sealing Knife
US Patent:
2008031, Dec 25, 2008
Filed:
Jun 24, 2008
Appl. No.:
12/145205
Inventors:
Patrick Whalen - Colchester IL, US
Don Bunnell - Bowen IL, US
Jim Lascelles - Ipava IL, US
Lonnie Lucas - Colchester IL, US
Derek Litchfield - Macomb IL, US
Derek Allensworth - Blandinsville IL, US
Don Bunnell - Bowen IL, US
Jim Lascelles - Ipava IL, US
Lonnie Lucas - Colchester IL, US
Derek Litchfield - Macomb IL, US
Derek Allensworth - Blandinsville IL, US
International Classification:
A01C 23/02
US Classification:
111121, 111118
Abstract:
A soil treatment dispensing assembly that is provided with a frame and a coulter wheel coupled to the frame that is adapted to engage the soil to form a trench. The soil treatment dispensing assembly is also provided with a support arm having a leading edge adapted to engage the soil. The support arm includes a tubular applicator that is coupled to the lower portion of the support arm. The applicator includes a tapered forward region, a dispensing opening and an internal cavity formed in the applicator. The soil treatment dispensing assembly also includes an application conduit arranged to terminate within the internal cavity of the applicator. The application conduit is connectable to a source of treating product, such as fertilizer, and communicates the treating product directly into the internal cavity of the applicator. Treating product within the internal cavity exits the opening formed in the applicator to treat the soil.
Implement Height Adjuster
US Patent:
2011024, Oct 13, 2011
Filed:
Feb 24, 2011
Appl. No.:
13/033881
Inventors:
Patrick Whalen - Colchester IL, US
Derek Litchfield - Macomb IL, US
Derek Allensworth - Macomb IL, US
Derek Litchfield - Macomb IL, US
Derek Allensworth - Macomb IL, US
International Classification:
A01B 63/30
US Classification:
172315
Abstract:
An implement height adjuster is provided to allow for the adjustment of the height of an implement remotely from the tractor cab without requiring the user to stop the tractor to make individual adjustments. The implement height adjuster is configured to be coupled to a planter unit or other equipment towed behind a tractor and includes a motor, a gear reduction transmission coupled to the motor, and a flexible output shaft, that is coupled to the transmission at a first end and to the implement to be adjusted at a second end. The flexible output shaft allows the motor of the implement height adjuster to be mounted in various positions on the equipment. The gear reduction transmission or motor includes a position sensor that allows the operator of the tractor to know the position of a particular implement without requiring a visual inspection of the implement. A control panel is used to manage the vertical adjustment of one or a series of implements. The control panel provides power to the implement height adjusters and uses the output signals of the sensor to determine the exact location of each the tillage implement.
Crop Debris Clearing Device
US Patent:
7240627, Jul 10, 2007
Filed:
Sep 10, 2004
Appl. No.:
10/937932
Inventors:
Patrick Whalen - Colchester IL, US
Stephen E. Cerven - Colchester IL, US
Derek A. Litchfield - Macomb IL, US
Stephen E. Cerven - Colchester IL, US
Derek A. Litchfield - Macomb IL, US
Assignee:
Yetter Manufacturing Company - Colchester IL
International Classification:
A01B 15/16, A01B 21/00, A01B 49/04, A01C 5/00, A01C 13/00
US Classification:
111140, 111164, 111167, 111193, 172574, 172575, 172584, 172603, 172604
Abstract:
A residue coulter apparatus that cleanly severs and clears crop debris from a planting row, causing minimal disturbance to the soil. The residue coulter apparatus comprises a pair of flat discs each having a plurality of back swept shark type teeth extending about their periphery. The teeth include a double beveled cutting edge on the outer edge of the teeth adapted to sever residue from the field. The clearing discs are oriented substantially vertical to the ground. Two clearing discs are used in combination to clear a pathway for planting seed. The clearing discs are angled toward each other so that the leading edges of the clearing discs are pointed in a toe-in orientation. The present design effectively removes crop debris without over discharge and causes minimal soil disturbance.
Crop Debris Clearing Device
US Patent:
7832345, Nov 16, 2010
Filed:
Feb 16, 2007
Appl. No.:
11/675992
Inventors:
Patrick Whalen - Colchester IL, US
Stephen E. Cerven - Colchester IL, US
Derek A. Litchfield - Macomb IL, US
Stephen E. Cerven - Colchester IL, US
Derek A. Litchfield - Macomb IL, US
Assignee:
Yetter Manufacturing Company - Colchester IL
International Classification:
A01B 15/16, A01B 21/00, A01B 49/04, A01C 5/00, A01C 13/00
US Classification:
111140, 111164, 111167, 111193, 172574, 172575, 172584, 172603, 172604
Abstract:
An apparatus that cleanly severs and clears crop debris from a planting row or closes a furrow while causing minimal disturbance to the soil. The residue coulter apparatus comprises a pair of flat discs each having a plurality of back swept teeth extending about their periphery. The teeth include a beveled cutting edge on the outer edge of the teeth adapted to sever residue from the field or close a furrow. The discs are oriented substantially vertical to the ground. Two discs are used in combination to clear a pathway for planting seed or for closing a furrow.
Cast Closing Wheel
US Patent:
D663326, Jul 10, 2012
Filed:
Jan 6, 2012
Appl. No.:
29/410260
Inventors:
Derek Allensworth - Macomb IL, US
Jim Lascelles - Ipava IL, US
Derek Litchfield - Macomb IL, US
Jim Lascelles - Ipava IL, US
Derek Litchfield - Macomb IL, US
Assignee:
Yatter Manufacturing Company - Colchester IL
International Classification:
1503
US Classification:
D15 29, D15 28