Inventor
HEFLER GREGORY W
US24 patents
Patents
24 patentsUS5697342ADec 16, 1997
Hydraulically-actuated fuel injector with direct control needle valve
CATERPILLAR INC121 citations98
US5687693ANov 18, 1997
Hydraulically-actuated fuel injector with direct control needle valve
CATERPILLAR INC107 citations98
US5479901AJan 2, 1996
Electro-hydraulic spool control valve assembly adapted for a fuel injector
CATERPILLAR INC106 citations98
US5738075AApr 14, 1998
Hydraulically-actuated fuel injector with direct control needle valve
CATERPILLAR INC103 citations97
US5669355ASep 23, 1997
Hydraulically-actuated fuel injector with direct control needle valve
CATERPILLAR INC95 citations96
US5628293AMay 13, 1997
Electronically-controlled fluid injector system having pre-injection pressurizable fluid storage chamber and direct-operated check
CATERPILLAR INC77 citations96
US5551398ASep 3, 1996
Electronically-controlled fluid injector system having pre-injection pressurizable fluid storage chamber and direct-operated check
CATERPILLAR INC68 citations96
US5826562AOct 27, 1998
Piston and barrell assembly with stepped top and hydraulically-actuated fuel injector utilizing same
CATERPILLAR INC64 citations95
US5682858ANov 4, 1997
Hydraulically-actuated fuel injector with pressure spike relief valve
CATERPILLAR INC89 citations95
US6082332AJul 4, 2000
Hydraulically-actuated fuel injector with direct control needle valve
CATERPILLAR INC42 citations92
US6065450AMay 23, 2000
Hydraulically-actuated fuel injector with direct control needle valve
CATERPILLAR INC16 citations92
US5833146ANov 10, 1998
Valve assembly with coupled seats and fuel injector using same
CATERPILLAR INC33 citations92
US5159811ANov 3, 1992
Flexible coupling device for use in an engine manifold system
CATERPILLAR INC47 citations89
US6425375B1Jul 30, 2002
Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same
CATERPILLAR INC15 citations83
US6142394ANov 7, 2000
Valve seat for a ball and pin valve member in a hydraulically actuated fuel injector
CATERPILLAR INC18 citations82
US6050496AApr 18, 2000
Rotational actuation fluid control valve for a hydraulically actuated fuel injector
CATERPILLAR INC8 citations74
US5520155AMay 28, 1996
Tappet and plunger assembly adapted for a fluid injection pump
CATERPILLAR INC12 citations74
US6749129B2Jun 15, 2004
Directly controlled fuel injector with sealing against fluid mixing
CATERPILLAR INC8 citations73
US5983864ANov 16, 1999
Jumper tube with improved misalignment capability
CATERPILLAR INC7 citations73
US6802285B2Oct 12, 2004
Engine having a variable valve actuation system
CATERPILLAR INC3 citations63
US6575137B2Jun 10, 2003
Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same
CATERPILLAR INC4 citations62
US6742728B2Jun 1, 2004
Electrical actuator subassembly with external threads and fuel injector using same
CATERPILLAR INC2 citations61
US7950373B2May 31, 2011
Check valve with separate spherical spring guide
CATERPILLAR INC3 citations59
US7470117B2Dec 30, 2008
Variable discharge fuel pump
CATERPILLAR INC2 citations53