David D Freeman

US Patent:

8089345, Jan 3, 2012

Filed:

May 7, 2007

Appl. No.:

11/800739

Inventors:

Darrel W. Berglund - Peoria IL, US
David C. Freeman - Mapleton IL, US
John W. Crayton - Peoria IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

G09F 25/00

US Classification:

34028601, 340506, 340517

Abstract:

A power and data delivery system for a machine. The system includes a conductor located throughout at least a portion of the machine for delivering power, a plurality of nodes, each connected to the conductor at a respective location, and a plurality of devices, each connected to a corresponding node. At least one node controls the delivery of power and data by way of a message containing a unique identifier for that one node.

US Patent:

8405500, Mar 26, 2013

Filed:

Dec 19, 2005

Appl. No.:

11/311595

Inventors:

Bryan G. Lammers - Peoria Heights IL, US
James I. Portscheller - Sparland IL, US
Paul G. Casperson - Peoria IL, US
John W. Crayton - Peoria IL, US
David C Freeman - Mapleton IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

G08B 1/08

US Classification:

34053811, 3404255, 340 101

Abstract:

A power and data delivery system for a machine. The system includes a power and data conductor located throughout at least a portion of the machine, a plurality of processing nodes, each connected to the conductor at various locations, and a plurality of devices, each connected to a corresponding one of the plurality of processing nodes and controlled by the processing node, wherein each processing node may be connected at any location of the conductor.

US Patent:

20070141903, Jun 21, 2007

Filed:

Dec 19, 2005

Appl. No.:

11/311596

Inventors:

Paul Casperson - Peoria IL, US
David Freeman - Mapleton IL, US

International Classification:

H01R 9/05

US Classification:

439582000

Abstract:

An electrical connector assembly. The connector may include a top housing and base housing for a conductor. The base housing may include a base conductor channel extending along a longitudinal axis, a conductor partition, and at least one conductor contact having corresponding prong transverse the longitudinal axis. The top housing may include a top conductor channel corresponding to the base conductor channel and a connector interface operably connected to the at least one prong.

US Patent:

20140061329, Mar 6, 2014

Filed:

Aug 29, 2012

Appl. No.:

13/597877

Inventors:

Khanh T. NGO - Peoria IL, US
David C. FREEMAN - Chillicothe IL, US
Peter W. ANDERTON - Peoria IL, US

International Classification:

B05B 12/00

US Classification:

239 11, 239146

Abstract:

A control system is disclosed having at least one spray head, a fluid pump, and a power converter driving the fluid pump. The control system may also have an interface device to receive at least one parameter associated with a desired fluid delivery event, a pressure sensor configured to generate a first signal, a travel speed sensor configured to generate a second signal, and a controller. The controller may be configured to determine a desired fluid pressure based on the at least one parameter, and determine a control command for the power converter based on the desired fluid pressure. The controller may be further configured to determine a feedforward gain parameter based on the at least one parameter and the second signal, determine a feedback gain parameter based on a difference between desired and actual fluid pressures, and adjust the control command based on the feedforward and feedback gain parameters.