CONRAD GENE GREMBOWICZ
Pilots at El Vis Ave, Peoria, IL

5575583, Nov 19, 1996

Apr 13, 1995

8/421821

Conrad G. Grembowicz - Peoria IL
Keith R. Schmidt - Sycamore IL
Alan L. Ferguson - Peoria IL

Caterpillar Paving Products Inc. - Minneapolis MN

E01L 1900

404 72

An apparatus for controlling a material feed system of a paver is disclosed. The material feed system includes a feeder conveyor and a spreader auger. The apparatus includes a sensor that monitors the amount of material at the edge of the screed and responsively produces an actual material height signal. A rotary switch produces a desired material height signal indicative of a desired amount of material at the edge of the screed. A controller receives the actual and desired material height signals, determines a desired rotational speed of the auger in response to the difference between the signal magnitudes, and produces a command signal to rotate the auger at the desired speed. An electrohydraulic system receives the command signal and rotates the auger at the desired rotational speed.

7970523, Jun 28, 2011

Apr 28, 2006

11/413187

Michael James Wallis - Washington IL, US
Paul Alan Ring - Dunlap IL, US
Giles Kent Sorrells - Metamora IL, US
Conrad Gene Grembowicz - Peoria IL, US
Jason Edward Carter - Morton IL, US

Caterpillar Inc. - Peoria IL

G06F 7/00, G06F 19/00, G05B 13/02, F02D 7/00

701 62, 701 99, 701102, 701110, 701 50, 700 29, 702 41, 12339919, 12340623, 123436, 123478

A torque estimator is disclosed for estimating torque on a machine. A computer system may include a torque estimator module located on the machine. The torque estimator module may be configured to receive a plurality of engine parameters, receive a drivetrain component parameter, determine an estimated torque value at the drivetrain component based on the plurality of engine parameters and the drivetrain component parameter. The computer system also may include an analysis module located on the machine. The analysis module may be configured to receive the estimated torque value and the drivetrain component parameter, and update a histogram data structure based on the estimated torque value and the drivetrain component parameter. The analysis module may also be configured to evaluate the histogram data structure in order to determine if excessive torque is being applied to a drivetrain component.

5568992, Oct 29, 1996

May 19, 1995

8/444945

Conrad G. Grembowicz - Peoria IL
Alan L. Ferguson - Peoria IL
Wade D. Samson - Sycamore IL
Keith R. Schmidt - Sycamore IL

Caterpillar Paving Products Inc. - Minneapolis MN

E01C 1912

404101

In one aspect of the present invention, a control system for a floating screed assembly for an asphalt paving machine is disclosed. The screed assembly includes a main screed and extension screed unit. An electrohydraulic device extends and retracts, as well as, raises and lowers the extension screed unit relative to the main screed unit. The electrohydraulic device additionally pivots the extension screed unit relative to the main screed unit about a horizontal axis. Position sensors produce position signals in response to the position of the extension screed unit. A controller receives the position signals and produces command signals to control the extending, retracting, and pivoting of the extension screed unit to a desired position.

4905120, Feb 27, 1990

Oct 20, 1988

7/260241

Conrad G. Grembowicz - Peoria IL
Brad Harrell - Morton IL

Caterpillar Inc. - Peoria IL

H01H 4732

36154

A driver circuit for first and second coils includes first and second selector switches coupled in series between first terminals of the coils and a first common junction, first and second diodes coupled in series between second terminals of the first and second coils, respectively, and a second common junction and a source of first potential coupled to the first common junction. A modulation switch is coupled between the second common junction and a source of second potential. The selector switches and modulation switches are operated to cause currents of controlled magnitude to flow through the coils. The circuit has improved fault immunity whereby at least one coil can be energized even when another coil has been subjected to a chassis ground fault.

5787374, Jul 28, 1998

Oct 25, 1995

8/548122

Alan L. Ferguson - Peoria IL
Conrad G. Grembowicz - Peoria IL
Keith R. Schmidt - Sycamore IL

Caterpillar Paving Products, Inc. - Minneapolis MN

B62D 1122, F16H 3714

701 41

An apparatus is disclosed for controlling the propulsion and steering of a machine. The machine includes a hydrostatic system that drives a pair of ground engaging traction devices. An electronic controller receives operator signals indicative of a desired travel speed and direction, and determines a desired rotational speed of the ground engaging traction devices. The electronic controller produces command signals indicative of the determined speeds to regulate the speed of the ground engaging traction devices to the desired speed.

2009021, Aug 27, 2009

Feb 26, 2008

12/071769

William Edward Allen - Peoria IL, US
Conrad Gene Grembowicz - Peoria IL, US
Roger Dale Koch - Pekin IL, US
Bryan James Everett - Peoria IL, US

G06Q 10/00, G05D 1/00

701 50, 705 8

A management system is provided having a data storage device configured to receive and store data from a loading machine and at least one of a plurality of transport machines. The data stored in the machines is indicative of at least one of a position and status of the loading machine and at least one of the plurality of transport machines. The management system also has a destination generator configured to estimate a location of an event and select and direct one of the plurality of transport machines to the estimated location. The estimated location is based on data received from the loading machine and data stored in the data storage device. The received and stored data are indicative of at least one of a current position and status of the loading machine and at least one of a previous position and status of the loading machine.

5757158, May 26, 1998

Feb 28, 1996

8/613775

Alan L. Ferguson - Peoria IL
Conrad G. Grembowicz - Peoria IL

Caterpillar Paving Products Inc. - Miineapolis MN

H01H 3942

318575

A control device for operating a machine is disclosed. The control device includes a joystick having a central axis and being universally moveable along a first and second axis in a plane perpendicular to the central axis, and a rotatable operator control station that houses the joystick. A joystick position sensor senses the position of the joystick and responsively generates a set of operator command signals corresponding to the displacement and direction of the joystick from the central axis in the first and second axis. A operator station position sensor senses the rotational position of the operator station and responsively generates a position signal. A controller receives the operator command and position signals, and responsively transposes the function of the joystick axis to correspond to the orientation of the machine.

8073653, Dec 6, 2011

Dec 23, 2002

10/326410

Jin Suzuki - Manchester CT, US
David Randal Hinton - Mt. Zion IL, US
Julie A. Gannon - Washington IL, US
Conrad Gene Grembowicz - Peoria IL, US

Caterpillar Inc. - Peoria IL

G06F 17/18, G06F 11/30, G01B 3/44, G01B 3/52, G21C 17/00

702181, 702 34, 702185

A life indicator for a component of a machine is disclosed. The life indicator includes at least one sensor operably associated with the machine and configured to sense a property associated with the machine. The sensor is configured to output the sensed property as a data signal. The life indicator also includes a memory element having a first data structure that determines a damage factor for the component of the machine based at least in part on the data signal received from the at least one sensor. A processor executes the first data structure to determine the damage factor.

5576962, Nov 19, 1996

Mar 18, 1996

8/619270

Alan L. Ferguson - Peoria IL
Conrad G. Grembowicz - Peoria IL
Larry E. Kendrick - Peoria IL

Caterpillar Inc. - Peoria IL

B60K 4116, F04B 4900

36443103

An apparatus for controlling the load of an engine associated with an hydrostatic drive system is disclosed. The apparatus modifies a pump displacement command signal in response to the actual and desired engine acceleration. The modified pump displacement command signal is used to control the displacement of a variable pump in order to regulate the load on the engine to achieve optimum efficiency.

6027177, Feb 22, 2000

Dec 19, 1997

8/994160

Alan L. Ferguson - Peoria IL
Conrad G. Grembowicz - Peoria IL
Timothy M. Gutzwiller - Peoria IL

Caterpillar Inc. - Peoria IL

F16D 3102

303 3

A controllable mechanical brake release system for controllably releasing a mechanical brake included in a hydrostatic machine is disclosed. In the preferred embodiment the hydrostatic machine is located on an incline. The mechanical brake is included in a mechanical braking system. The hydrostatic machine has the braking system, a hydrostatic propulsion system and a controller. A determined hydraulic pressure associated with the hydrostatic propulsion system is compared with an established trip indicator. A release mechanical brake signal is produced in response to the comparison.