GH

Gregory W. Hefler

Caterpillar: 27 patents #105 of 8,398Top 2%
Overall (All Time): #147,244 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 25 most recent of 27 patents

Patent #TitleCo-InventorsDate
8689772 Fuel injector with telescoping armature overtravel feature Adam Stecklein, Daniel R. Ibrahim 2014-04-08
8690075 Fuel injector with needle control system that includes F, A, Z and E orifices Sana Mahmood, Zhenyu Li, Michael Curtis Herr, Linda Angharad Williams 2014-04-08
7950373 Check valve with separate spherical spring guide Michael C. Long, Senthilkumar Rajagopalan, Donald A. Fuller 2011-05-31
7509948 Variable displacement pump with an anti-stiction device Jeffrey DePayva, Daniel R. Puckett, Todd A Johnson 2009-03-31
7470117 Variable discharge fuel pump Scott F. Shafer, Brad E. Bartley, Kevin Charles Reynolds 2008-12-30
6802285 Engine having a variable valve actuation system 2004-10-12
6749129 Directly controlled fuel injector with sealing against fluid mixing Sudhindra K. Ayanji, Ye Tian, Scott F. Shafer 2004-06-15
6742728 Electrical actuator subassembly with external threads and fuel injector using same Ralph A. Smith, III, Clifford E. Cotton, III, Richard H. Holtman 2004-06-01
6575137 Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same Shikui Kevin Chen 2003-06-10
6425375 Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same Shikui Kevin Chen 2002-07-30
6142394 Valve seat for a ball and pin valve member in a hydraulically actuated fuel injector Brian J. Murphy 2000-11-07
6082332 Hydraulically-actuated fuel injector with direct control needle valve Shikui Kevin Chen 2000-07-04
6065450 Hydraulically-actuated fuel injector with direct control needle valve Shikui Kevin Chen 2000-05-23
6050496 Rotational actuation fluid control valve for a hydraulically actuated fuel injector 2000-04-18
5983864 Jumper tube with improved misalignment capability Scott A. Chockley, Dennis H. Gibson, Ronald D. Shinogle, Alan R. Stockner 1999-11-16
5833146 Valve assembly with coupled seats and fuel injector using same 1998-11-10
5826562 Piston and barrell assembly with stepped top and hydraulically-actuated fuel injector utilizing same Shikui Kevin Chen 1998-10-27
5738075 Hydraulically-actuated fuel injector with direct control needle valve Shikui Kevin Chen 1998-04-14
5697342 Hydraulically-actuated fuel injector with direct control needle valve Michael D. Anderson, Dennis H. Gibson, Dale C. Maley, Ronald D. Shinogle, Mark F. Sommars 1997-12-16
5687693 Hydraulically-actuated fuel injector with direct control needle valve Shikui Kevin Chen 1997-11-18
5682858 Hydraulically-actuated fuel injector with pressure spike relief valve Shikui Kevin Chen 1997-11-04
5669355 Hydraulically-actuated fuel injector with direct control needle valve Dennis H. Gibson 1997-09-23
5628293 Electronically-controlled fluid injector system having pre-injection pressurizable fluid storage chamber and direct-operated check Dennis H. Gibson, Ronald D. Shinogle, Mark F. Sommars, Howard N. Cannon 1997-05-13
5551398 Electronically-controlled fluid injector system having pre-injection pressurizable fluid storage chamber and direct-operated check Dennis H. Gibson, Ronald D. Shinogle, Mark F. Sommars 1996-09-03
5520155 Tappet and plunger assembly adapted for a fluid injection pump 1996-05-28