Joshua D Graeve from Ottumwa, IA, age 48

Us Patents

Control System For An Electronic Float Feature For A Loader
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US Patent:

7478489, Jan 20, 2009
Filed:

Jun 1, 2006
Appl. No.:

11/444988
Inventors:

Eric R Anderson - Galena IL, US
Jahmy Hindman - Rickardsville IA, US
Joshua D Graeve - Epworth IA, US
Assignee:

Deere & Company - Moline IL
International Classification:

G05D 1/02
US Classification:

37348, 37382, 37414, 414699, 701 50, 60413
Abstract:

The present invention is related to a loader of a construction apparatus such as front-end wheel loader or an agricultural tractor. Specifically, the present invention is related to a control system for a loader.

Hydraulic System With Warm Up Circuit
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US Patent:

7827785, Nov 9, 2010
Filed:

Dec 3, 2007
Appl. No.:

11/949244
Inventors:

Edward C. Messerlie - Platteville WI, US
Neil V. Harber - Holy Cross IA, US
Joshua D. Graeve - Peosta IA, US
Assignee:

Deere & Company - Moline IL
International Classification:

F15B 11/06
F16D 39/00
US Classification:

60329, 91431
Abstract:

A hydraulic control system in which a pump for pressurized hydraulic fluid connects with a valve assembly having a valve element displaceable in a chamber to selectively direct fluid to a load driven by the hydraulic system. Surfaces on the end faces of the valve element are exposed to hydraulic pressure from a controller via electro-hydraulic solenoid valves. The surfaces of the valve element adjacent the end faces are undercut to establish a leakage flow path and the solenoid valves are selectively actuated to pressurize the end faces to a level below normal actuation of the valve element but high enough to cause fluid to return to a drain and thus increase the temperature of the hydraulic fluid in the system.

Circle Drive Arrangement For Motor Grader
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US Patent:

7874377, Jan 25, 2011
Filed:

Oct 29, 2009
Appl. No.:

12/608116
Inventors:

Joshua Dean Graeve - Peosta IA, US
Assignee:

Deere & Company - Moline IL
International Classification:

E02F 3/00
US Classification:

172796
Abstract:

A motor grader is equipped with a circle drive arrangement including a variable displacement motor capable of operating at a high speed for driving the circle at a high speed, as when the blade is elevated above the ground and the grader is turning around for reversing the operation of the blade, and capable of operating at a high torque for driving the circle to change the angle of operation of the blade relative to the grader frame when the blade is in ground contact.

Steering System With Variable Flow Rate Amplification Ratio And Associated Method
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US Patent:

7913800, Mar 29, 2011
Filed:

Oct 30, 2006
Appl. No.:

11/589459
Inventors:

Joshua D. Graeve - Epworth IA, US
Eric R. Anderson - Galena IL, US
Assignee:

Deere & Company - Moline IL
International Classification:

B62D 5/06
US Classification:

180421
Abstract:

A steering system has a steering control unit and a ratio adjuster for varying a flow rate amplification ratio of the steering control unit.

Steering Control System Combining Electro-Hydraulic And Manually-Actuated Pilot Pressure Control Valves For Safe Operation
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US Patent:

8056672, Nov 15, 2011
Filed:

Dec 9, 2009
Appl. No.:

12/634006
Inventors:

Joshua D. Graeve - Peosta IA, US
Assignee:

Deere & Company - Moline IL
International Classification:

B62D 5/065
US Classification:

180441, 180432
Abstract:

A steering control system for directing fluid to steering actuators on a machine include a set of right and left manually-operated pilot pressure fluid control valves and a set of right and left electro-hydraulic (EH) pilot pressure fluid control valves, with both sets being coupled to a main steering control valve for controlling movement of the latter to effect operation of the steering actuators. An electronic control unit (ECU) includes a computer and a memory and receives signals representative of various operating parameters of the control system and of the vehicle ground speed and operates to control the EH pilot pressure control valves and a set of right and left solenoid-operated valves such that only flow from the set of manually-operated valves is connected for operating the main steering control valve to effect a least aggressive steering mode when the vehicle speed is indicative of road travel, and for also actuating the EH pilot pressure control valves for effecting a more aggressive steering mode when the vehicle speed is low indicating off-road travel. EH valve failure results in the control system defaulting to that for effecting the least aggressive steering mode, while failure of one or both of the manually-controlled valves results in the EH control valves being activated to provide that pilot pressure called for by the manually-operated valve.

Mounting Console With Visibility Improvements
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US Patent:

8333250, Dec 18, 2012
Filed:

Mar 7, 2008
Appl. No.:

12/075076
Inventors:

Anthony Jon Knepper - Asbury IA, US
Joshua Dean Graeve - Peosta IA, US
Jed Douglas Polzin - Platteville WI, US
Michael Eugene Kennedy - Dubuque IA, US
Darrel Jeffrey Rowan - Dubuque IA, US
Assignee:

Deere & Company - Moline IL
International Classification:

E02F 3/00
US Classification:

172781, 180 78
Abstract:

A steering wheel assembly for a construction vehicle, such as a motor grader, is provided. The steering wheel assembly includes a chamfer or defines a space for viewing a portion of a grader blade of the motor grader.

Inverter Mounting On An Electric Drive Loader
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US Patent:

8474560, Jul 2, 2013
Filed:

Dec 28, 2011
Appl. No.:

13/338519
Inventors:

Jeffrey J. Konz - Dubuque IA, US
Joshua D. Graeve - Peosta IA, US
Devendra Thakur - Pune, IN
Mark J. Cherney - Potosi WI, US
Michael J. Ackerman - Peosta IA, US
Assignee:

Deere & Company - Moline IL
International Classification:

B60R 16/04
US Classification:

180 685
Abstract:

The present disclosure provides a work machine having a frame and a front and rear wheel axle. The machine includes a cab coupled to the frame. The cab is configured to include controls for controlling the operation of the work machine. The machine also includes an electrically-powered drive assembly coupled to the frame and front and rear axles and an inverter electrically coupled to the electrically-powered drive assembly. The machine further includes a platform assembly disposed adjacent the cab and coupled to the frame. The platform assembly comprises an outer wall at least partially surrounding the inverter.

Electro-Hydraulic Sensor Fail Safe
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US Patent:

8646473, Feb 11, 2014
Filed:

Feb 28, 2011
Appl. No.:

13/037347
Inventors:

Derek Scott Hall - Dubuque IA, US
Joshua Dean Graeve - Peosta IA, US
Brian K. Kellogg - Bellevue IA, US
Eric Richard Anderson - Ames IA, US
Jeffrey William Dobchuk - Saskatoon, CA
Assignee:

Deere & Company - Moline IL
International Classification:

F16K 35/14
F16K 31/00
US Classification:

137 14, 137636, 1376371
Abstract:

A fail-safe system and method for an electro-hydraulic system. The system includes a controller, sensor, directional control valve, interlock, hydraulic valve and movement actuator. The directional control valve moves when the controller is moved. The interlock is hydraulically coupled to the directional control valve; and is in active position when the directional control valve is moved, and in shutoff position when the directional control valve is not moved. The hydraulic valve has an input side coupled to a flow source and an output side coupled to a hydraulic function. The movement actuator moves the hydraulic valve to a desired position as directed by the controller when the interlock is in the active position, and does not move the hydraulic valve when the interlock is in the shutoff position. The sensor detects movement of the controller and sends a control signal to the first valve actuator.