David E Hackett

US Patent:

6349686, Feb 26, 2002

Filed:

Aug 31, 2000

Appl. No.:

09/652172

Inventors:

Dennis D. Feucht - Morton IL
David E. Hackett - Washington IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F01L 902

US Classification:

123 9012, 123 9013, 123446, 251 3005

Abstract:

In a hydraulically actuated gas exchange valve, the initiation and termination of gas exchange is achieved with a hydraulically driven valve that functions by opening an actuation fluid passage to a high pressure inlet source and a low pressure drain, respectively. The large amount of fluid needed to actuate a gas exchange valve can result in dynamic flow forces around the hydraulically driven valve making closing of the valve with a conventional biasing spring problematic. The small size of the valve limits the size and therefore strength of the biasing springs. Likewise, the need to provide a sufficiently strong spring limits valve designs. The present invention is intended to provide superior control over the timing of gas exchange by employing a hydraulic bias in place of the conventional biasing spring. Hydraulic bias allows both a greater closing force on the valve than could be provided with a spring, and allows for greater versatility in future valve designs.

US Patent:

6626137, Sep 30, 2003

Filed:

Jan 14, 2002

Appl. No.:

10/047218

Inventors:

David E. Hackett - Washington IL

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

F01L 118

US Classification:

123 9045, 123 9055, 123 9019

Abstract:

A lash adjuster and a method for adjusting lash in an engine valve train are provided. A first component of the lash adjuster is formed from a first material having a first coefficient of thermal expansion. A second component of the lash adjuster is formed from a second material having a second coefficient of thermal expansion greater than the first coefficient of thermal expansion. The second component has an exterior dimension that is greater than or equal to a corresponding interior dimension of the first component when the lash adjuster is heated to an operating temperature.

US Patent:

6647770, Nov 18, 2003

Filed:

Mar 13, 2002

Appl. No.:

10/097686

Inventors:

Mysore S. Satish - Missouri City TX
Timothy E. McGreevy - Morton IL
James J. Buettner - Peoria IL
David A. Cusac - East Peoria IL
Gregory J. Kaufmann - Metamora IL
Ronald P. Maloney - Peoria IL
Brian A. Cull - Metamora IL
John R. Davenport - Watseka IL
Burhan Hamdan - Peoria IL
David E. Hackett - Washington IL
Reid A. Peterson - Sparland IL
Gary L. Spadin - Chillicothe IL
Loren L. Randle - Hanna City IL
Michael L. Lusher - Delevan IL

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

G01M 1500

US Classification:

73119R

Abstract:

An apparatus for testing internal combustion engine valves is provided. The apparatus includes a housing with a bore for receiving a seat fixture. The seat fixture, in turn, receives a seat insert. A valve is inserted into the apparatus so the valve head is received at the seat insert and the valve stem extends through the seat fixture and through an axial bore in the housing. One end of the valve engages an actuating apparatus that provides a lifting action of the valve so that the valve head moves off of the seat insert as well as a rotating action to the valve. Another actuator is provided to move the valve from a lifted position to a seated position. A heater is employed to heat the valve to high temperatures to simulate extreme operating conditions. A cooling system is also provided to rapidly cool the valve and associated elements to simulate a rapid cooling condition. A method for testing internal combustion engine valves is also disclosed.

US Patent:

20120285419, Nov 15, 2012

Filed:

May 12, 2011

Appl. No.:

13/106504

Inventors:

David Elliot Hackett - Washington IL, US
Mark F. Sommars - Hopewell IL, US

Assignee:

CATERPILLAR, INC. - PEORIA IL

International Classification:

F02M 43/00
B23P 11/00

US Classification:

123304, 2988801

Abstract:

A duel fuel quill assembly and method for assembling such an assembly for an engine are disclosed. The dual fuel quill assembly may comprise a cylinder head including a main bore and a receiving cavity, an outer quill tube, an inner quill tube nested within the outer quill tube, an adapter slidingly received inside the main bore of the cylinder head, and a manifold secured to the adapter. The adapter may be moveable between a first position and a second position and may define an axial bore configured to receive the outer quill tube and the nested inner quill tube. The manifold may define a recess configured to compress the outer and inner quill tubes against the cylinder head cavity when the adapter is in the second position.

US Patent:

20120291752, Nov 22, 2012

Filed:

May 19, 2011

Appl. No.:

13/111067

Inventors:

David Elliot Hackett - Washington IL, US

Assignee:

CATERPILLAR, INC. - Peoria IL

International Classification:

F02M 43/00

US Classification:

123445

Abstract:

A quill assembly includes a first quill tube and a second quill tube nested within the first quill tube. A first compression assembly includes a first piston operably coupled to the first quill tube and fluidly communicates with the first fuel rail to apply a first piston axial force against the first quill tube inlet end, and a first spring operably coupled to the first piston and configured to apply a first spring axial force against the first quill tube inlet end. A second compression assembly includes a second piston operably coupled to the second quill tube inlet end and fluidly communicates with the second fuel rail to apply a second piston axial force against the second quill tube inlet end, and a second spring operably coupled to the second piston and configured to apply a second spring axial force against the second quill tube inlet end.

US Patent:

20130062291, Mar 14, 2013

Filed:

Sep 12, 2011

Appl. No.:

13/229837

Inventors:

David Elliot Hackett - Washington IL, US
Chad Falah Ahmad - Peoria IL, US

Assignee:

CATERPILLAR INC. - Peoria IL

International Classification:

B01D 37/00
B01D 35/00

US Classification:

210767, 210348

Abstract:

A fluid filter assembly includes a housing oriented along a vertical axis. A filter medium is disposed within the housing, oriented along the vertical axis, and has a filtration rating. The filter medium traps particulates having a particulate size greater than the filtration rating. A particulate containment space is located below the filter medium relative to the vertical axis and is defined by an inner surface of the housing and a lower end of the filter medium. A re-entrainment reduction structure, having an array of hollow cells, is positioned within the particulate containment space for receiving dislodged particulates.

US Patent:

20130152779, Jun 20, 2013

Filed:

Dec 20, 2011

Appl. No.:

13/330736

Inventors:

Michael E. Pickell - Washington IL, US
Bryan E. Nelson - Lacon IL, US
Satyasai C. Avasarala - Pontiac IL, US
David E. Hackett - Washington IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F16J 15/18
B23P 15/00

US Classification:

92165 R, 2988802

Abstract:

A shaft arrangement for an axial piston pump assembly to couple to a rotatable member such as a gear therewith. A shaft extends at least partially through a housing chamber of the pump about a longitudinal axis. Reciprocating pistons are disposed within the chamber radially about the shaft. A cam unit is fitted over the shaft and provides an angled camming surface to engage the pistons. Bearing assemblies are fitted over the cam unit. An adapter can be fitted over the proximal end of the cam unit. The adapter has a distal surface which may abut the bearing assembly and be axially spaced from the cam unit, and an outer radial surface to engage the rotatable member. A clamping device provides a desired clamp load path between the rotatable member, the adapter, the cam unit, the bearing assemblies and the shaft.

US Patent:

20140000563, Jan 2, 2014

Filed:

Jun 27, 2012

Appl. No.:

13/534343

Inventors:

David Elliot Hackett - Washington IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02M 69/50
B23P 17/00
F02M 69/04

US Classification:

123456, 123445, 2989009

Abstract:

A coaxial quill assembly is used for supplying gaseous and liquid fuels from separate common rails to individual fuel injectors of a compression ignition engine. Each coaxial quill assembly includes a matched pair of an outer quill and an inner quill that are matched based upon a fuel system dimensional specification that causes both the inner and outer quills to sealingly engage a common conical seat of a fuel injector. During pre-installation handling, the matched pair of inner and outer quills are retained together with a retainer.