Gregory W. Hefler

Person

Chillicothe, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Fuel injector with telescoping armature overtravel feature
- Patent number 8,689,772
- Issue date Apr 8, 2014
- Caterpillar Inc.
- Gregory William Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Fuel injector with needle control system that includes F, A, Z and...
- Patent number 8,690,075
- Issue date Apr 8, 2014
- Caterpillar Inc.
- Sana Mahmood
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
High pressure pump and method of reducing fluid mixing within same
- Patent number 8,061,328
- Issue date Nov 22, 2011
- Caterpillar Inc.
- Scott F. Shafer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Check valve with separate spherical spring guide
- Patent number 7,950,373
- Issue date May 31, 2011
- Caterpillar Inc.
- Gregory W. Hefler
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Variable displacement pump with an anti-stiction device
- Patent number 7,509,948
- Issue date Mar 31, 2009
- Caterpillar Inc.
- Jeffrey M. DePayva
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Variable discharge fuel pump
- Patent number 7,470,117
- Issue date Dec 30, 2008
- Caterpillar Inc.
- Scott F. Shafer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Engine having a variable valve actuation system
- Patent number 6,802,285
- Issue date Oct 12, 2004
- Caterpillar Inc.
- Gregory W. Hefler
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Directly controlled fuel injector with sealing against fluid mixing
- Patent number 6,749,129
- Issue date Jun 15, 2004
- Caterpillar Inc.
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Electrical actuator subassembly with external threads and fuel inje...
- Patent number 6,742,728
- Issue date Jun 1, 2004
- Caterpillar Inc.
- Ralph A. Smith
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Piston and barrel assembly with stepped top and hydraulically-actua...
- Patent number 6,575,137
- Issue date Jun 10, 2003
- Caterpillar Inc.
- Gregory W. Hefler
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Piston and barrel assembly with stepped top and hydraulically-actua...
- Patent number 6,425,375
- Issue date Jul 30, 2002
- Caterpillar Inc.
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Valve seat for a ball and pin valve member in a hydraulically actua...
- Patent number 6,142,394
- Issue date Nov 7, 2000
- Caterpillar Inc.
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulically-actuated fuel injector with direct control needle valve
- Patent number 6,082,332
- Issue date Jul 4, 2000
- Caterpillar Inc.
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulically-actuated fuel injector with direct control needle valve
- Patent number 6,065,450
- Issue date May 23, 2000
- Caterpillar Inc.
- Shikui K. Chen
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Rotational actuation fluid control valve for a hydraulically actuat...
- Patent number 6,050,496
- Issue date Apr 18, 2000
- Caterpillar Inc.
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Jumper tube with improved misalignment capability
- Patent number 5,983,864
- Issue date Nov 16, 1999
- Caterpillar Inc.
- Scott A. Chockley
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Valve assembly with coupled seats and fuel injector using same
- Patent number 5,833,146
- Issue date Nov 10, 1998
- Caterpillar Inc.
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Piston and barrell assembly with stepped top and hydraulically-actu...
- Patent number 5,826,562
- Issue date Oct 27, 1998
- Caterpillar Inc.
- Shikui K. Chen
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulically-actuated fuel injector with direct control needle valve
- Patent number 5,738,075
- Issue date Apr 14, 1998
- Caterpillar Inc.
- Shikui K. Chen
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulically-actuated fuel injector with direct control needle valve
- Patent number 5,697,342
- Issue date Dec 16, 1997
- Caterpillar Inc.
- Michael D. Anderson
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulically-actuated fuel injector with direct control needle valve
- Patent number 5,687,693
- Issue date Nov 18, 1997
- Caterpillar Inc.
- Shikui K. Chen
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulically-actuated fuel injector with pressure spike relief valve
- Patent number 5,682,858
- Issue date Nov 4, 1997
- Caterpillar Inc.
- Shikui K. Chen
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulically-actuated fuel injector with direct control needle valve
- Patent number 5,669,355
- Issue date Sep 23, 1997
- Caterpillar Inc.
- Dennis H. Gibson
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Electronically-controlled fluid injector system having pre-injectio...
- Patent number 5,628,293
- Issue date May 13, 1997
- Caterpillar Inc.
- Dennis H. Gibson
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Electronically-controlled fluid injector system having pre-injectio...
- Patent number 5,551,398
- Issue date Sep 3, 1996
- Caterpillar Inc.
- Dennis H. Gibson
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Tappet and plunger assembly adapted for a fluid injection pump
- Patent number 5,520,155
- Issue date May 28, 1996
- Caterpillar Inc.
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Electro-hydraulic spool control valve assembly adapted for a fuel i...
- Patent number 5,479,901
- Issue date Jan 2, 1996
- Caterpillar Inc.
- Dennis H. Gibson
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Flexible coupling device for use in an engine manifold system
- Patent number 5,159,811
- Issue date Nov 3, 1992
- Caterpillar Inc.
- Gregory W. Hefler
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

Information Patent Application
Fuel Injector With Needle Control System That Includes F, A, Z and...
- Publication number 20130112767
- Publication date May 9, 2013
- Caterpillar Inc.
- Sana Mahmood
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Fuel Injector With Telescoping Armature Overtravel Feature
- Publication number 20120291753
- Publication date Nov 22, 2012
- Caterpillar Inc.
- Gregory William Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Two-Way Valve Orifice Plate for a Fuel Injector
- Publication number 20120103308
- Publication date May 3, 2012
- Caterpillar, Inc.
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Check valve with separate spherical spring guide
- Publication number 20100037965
- Publication date Feb 18, 2010
- Caterpillar Inc.
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
VARIABLE DISPLACEMENT PUMP WITH AN ANTI-STICTION DEVICE
- Publication number 20090084360
- Publication date Apr 2, 2009
- Caterpillar Inc.
- Jeffrey M. DePayva
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
High pressure pump and method of reducing fluid mixing within same
- Publication number 20060201484
- Publication date Sep 14, 2006
- Scott F. Shafer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Variable discharge fuel pump
- Publication number 20060120880
- Publication date Jun 8, 2006
- Caterpillar Inc.
- Scott F. Shafer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
ENGINE HAVING A VARIABLE VALVE ACTUATION SYSTEM
- Publication number 20040118368
- Publication date Jun 24, 2004
- Gregory W. Hefler
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Directly controlled fuel injector with sealing against fluid mixing
- Publication number 20040021003
- Publication date Feb 5, 2004
- Gregory W. Hefler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Electrical actuator subassembly with external threads and fuel inje...
- Publication number 20030029940
- Publication date Feb 13, 2003
- Ralph A. Smith
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Piston and barrel assembly with stepped top and hydraulically-actua...
- Publication number 20020148444
- Publication date Oct 17, 2002
- Gregory W. Hefler
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
TWO PIECE GUIDED NOZZLE ASSEMBLY FOR A FUEL INJECTOR
- Publication number 20010017324
- Publication date Aug 30, 2001
- DANA R. COLDREN
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Gregory W. Hefler

Person

Patents Grantslast 30 patents

Fuel injector with telescoping armature overtravel feature

Fuel injector with needle control system that includes F, A, Z and...

High pressure pump and method of reducing fluid mixing within same

Check valve with separate spherical spring guide

Variable displacement pump with an anti-stiction device

Variable discharge fuel pump

Engine having a variable valve actuation system

Directly controlled fuel injector with sealing against fluid mixing

Electrical actuator subassembly with external threads and fuel inje...

Piston and barrel assembly with stepped top and hydraulically-actua...

Piston and barrel assembly with stepped top and hydraulically-actua...

Valve seat for a ball and pin valve member in a hydraulically actua...

Hydraulically-actuated fuel injector with direct control needle valve

Hydraulically-actuated fuel injector with direct control needle valve

Rotational actuation fluid control valve for a hydraulically actuat...

Jumper tube with improved misalignment capability

Valve assembly with coupled seats and fuel injector using same

Piston and barrell assembly with stepped top and hydraulically-actu...

Hydraulically-actuated fuel injector with direct control needle valve

Hydraulically-actuated fuel injector with direct control needle valve

Hydraulically-actuated fuel injector with direct control needle valve

Hydraulically-actuated fuel injector with pressure spike relief valve

Hydraulically-actuated fuel injector with direct control needle valve

Electronically-controlled fluid injector system having pre-injectio...

Electronically-controlled fluid injector system having pre-injectio...

Tappet and plunger assembly adapted for a fluid injection pump

Electro-hydraulic spool control valve assembly adapted for a fuel i...

Flexible coupling device for use in an engine manifold system

Patents Applicationslast 30 patents

Fuel Injector With Needle Control System That Includes F, A, Z and...

Fuel Injector With Telescoping Armature Overtravel Feature

Two-Way Valve Orifice Plate for a Fuel Injector

Check valve with separate spherical spring guide

VARIABLE DISPLACEMENT PUMP WITH AN ANTI-STICTION DEVICE

High pressure pump and method of reducing fluid mixing within same

Variable discharge fuel pump

ENGINE HAVING A VARIABLE VALVE ACTUATION SYSTEM

Directly controlled fuel injector with sealing against fluid mixing

Electrical actuator subassembly with external threads and fuel inje...

Piston and barrel assembly with stepped top and hydraulically-actua...

TWO PIECE GUIDED NOZZLE ASSEMBLY FOR A FUEL INJECTOR