DAVID CONWAY ATKINSON
Engineers in Lake Of The Woods, IL

7320220, Jan 22, 2008

Dec 15, 2006

11/639160

David Conway Atkinson - Dunlap IL, US

Caterpillar Inc. - Peoria IL

F02B 33/44

606052, 60611

A valve arrangement for an internal combustion engine is disclosed. The valve arrangement may have a housing at least partially defining a venturi passageway, a first port disposed at an entrance to the venturi passageway, and a second port disposed at a throat of the venturi passageway. The valve arrangement may further have a valve element disposed within the housing to regulate the flow of fluid through the housing, and a sensor mounted to the housing in communication with the first and second ports. The valve arrangement may also have a controller mounted to the housing in communication with the sensor. The controller may be configured to affect movement of the valve element in response to input from the sensor.

7069919, Jul 4, 2006

Jan 6, 2005

11/030471

David C. Atkinson - Dunlap IL, US
Yung Bui - Peoria IL, US
Michael Evancik - Chillicothe IL, US
Paul A. Gamble - Peoria IL, US

Caterpillar Inc - Peoria IL

F02B 47/08

12356819, 12356818

A method and apparatus for controlling the ratio of ambient air to recirculated gases in an internal combustion engine, wherein an gas injector includes a intake air conduit defining a ambient air flow path, an actuator connected to the intake air conduit, a recirculated gas conduit operatively coupled and disposed within the intake air conduit defining a recirculated gas flow path and a valve apparatus operatively coupled to the intake air conduit and recirculated gas conduit. The valve apparatus includes; a shaft, a throttle valve coupled to the shaft and in fluid communication with the ambient air flow and a recirculated gas valve coupled to the shaft in fluid communication with the recirculated gas flow. The shaft rotates one of the throttle valve and the recirculated gas valve independent of the rotation of the other one of throttle valve and said recirculated gas valve.

2013004, Feb 21, 2013

Aug 16, 2011

13/210653

David C. Atkinson - Dunlap IL, US

CATERPILLAR, INC. - Peoria IL

E02F 3/28, E02F 3/36, G06F 19/00, E02F 1/00

414685, 414815, 701 50

A machine includes a frame having ground engaging propulsion elements coupled therewith, and a hydraulically actuated implement system having a linkage, an implement coupled with the linkage, and a hydraulic actuator coupled with the linkage. The machine further includes a control system having an electronic control unit configured to receive an implement down force control command, and responsively adjust a pressure of hydraulic fluid in the hydraulic actuator such that the implement rests with controlled down force upon a substrate below the machine. The controlled down force may be less than a quiescent down force of the hydraulically actuated implement system. Related methodology is also disclosed.

7237531, Jul 3, 2007

Jun 17, 2005

11/154661

David Conway Atkinson - Dunlap IL, US

Caterpillar Inc. - Peoria IL

F02D 11/10, F02M 25/07, F02B 47/09

123399, 12356819

A valve arrangement for a power source is disclosed. The valve arrangement has a first valve element and a second valve element. The valve arrangement also has an actuator configured to drive the first and second valve elements. The valve arrangement further has a planetary gear arrangement interconnecting the actuator and the first and second valve elements.

2013000, Jan 3, 2013

Jun 29, 2011

13/172504

Amanda Heisel - Hanna City IL, US
David Atkinson - Dunlap IL, US
Brien Johnston - Peoria IL, US

CATERPILLAR INC. - Peoria IL

F02D 23/00, F02B 33/44

60602, 606052

An exhaust gas recirculation valve is configured as a butterfly valve and includes a body with a generally uniform diameter bore therethrough. A generally circular plate is mounted within the bore and is rotatable between a first open position and a second closed position. The generally circular plate is dimensioned to provide a enlarged gap between an outer edge of the generally circular plate and the bore when at the second closed position.

2013010, May 2, 2013

Nov 2, 2011

13/287334

David C. Atkinson - Dunlap IL, US

CATERPILLAR, INC. - Peoria IL

E02F 9/20, E02F 3/36, G06F 19/00

414685, 701 50

A machine such as a wheel loader includes a frame and ground engaging propulsion elements coupled with the frame. A hydraulically actuated implement system of the machine includes a linkage and an implement and is adjustable from a starting configuration to a second configuration according to a substrate collision avoiding pattern. In the second configuration, the implement hovers above a substrate beneath the machine. Related methodology and control logic is also disclosed.

7946117, May 24, 2011

Jun 29, 2007

11/819876

David C. Atkinson - Dunlap IL, US
Christopher F. Gallmeyer - Peoria IL, US
Ashutosh Katari - Peoria IL, US
Brian V. Tranel - Peoria IL, US

Caterpillar Inc. - Peoria IL

F02B 33/44

606052, 60611, 12356819

A method of determining and regulating a mass flow rate exhaust gases recirculated into an engine is disclosed. The method may comprise directing the exhaust gases through a venturi and sensing a differential exhaust pressure across the venturi. The method may further include sensing an absolute exhaust pressure at the venturi, and sensing a temperature of the exhaust gases. The method may further include determining the mass flow rate of the exhaust based on the sensed differential fluid pressure, absolute fluid pressure, and temperature.

2010015, Jun 24, 2010

Dec 18, 2008

12/337678

SCOTT DAVID BRINKMEYER - E. Peoria IL, US
ARTHUR SCOTT LINDELL - Morton IL, US
JOSHUA DAVID KEYES - E. Peoria IL, US
JOSEPH JOHN STABNIK - Peoria IL, US
MATTHEW JAMES MUSEC - E. Peoria IL, US
DAVID CONWAY ATKINSON - Dunlap IL, US
NICHOLAS JOHN HOFFMAN - Washington IL, US
DOUGLAS EDWARD JONES - Lafayette IN, US

Caterpillar Inc. - Peoria IL

F01N 7/00

60324

Exhaust gas systems and methods are disclosed. A system includes an extensible duct assembly to communicate an exhaust gas from an internal combustion engine to an exhaust gas receiver. An angularly positionable ball joint assembly may be coupled to the duct assembly to fluidly and sealably couple the duct assembly to at least one of the outlet and the exhaust receiver. A method of installing an exhaust gas system includes presenting a first portion of the exhaust gas system to one of an exhaust gas outlet and an exhaust gas receiver, and positioning a second portion of the exhaust gas system relative to the other of the exhaust gas outlet and the exhaust gas receiver. The first portion and the second portion may be adjusted to achieve an alignment, and the first portion and the second portion may be sealably coupled to fixedly retain the alignment.