Inventor
STIFFLER STEPHEN P
US20 patents
Patents
20 patentsUS6824225B2Nov 30, 2004
Embossed washer
KENNAMETAL INC221 citations99
US5141289AAug 25, 1992
Cemented carbide tip
KENNAMETAL INC194 citations99
US4940288AJul 10, 1990
Earth engaging cutter bit
KENNAMETAL INC161 citations99
US4981328AJan 1, 1991
Rotatable tool having a carbide insert with bumps
KENNAMETAL INC71 citations95
US6428110B1Aug 6, 2002
Cutting tool retainer
KENNAMETAL INC40 citations92
US6070945AJun 6, 2000
Cutting tool retainer
KENNAMETAL INC24 citations92
US5219209AJun 15, 1993
Rotatable cutting bit insert
KENNAMETAL INC44 citations92
US5131725AJul 21, 1992
Rotatable cutting tool having an insert with flanges
KENNAMETAL INC33 citations92
US4941711AJul 17, 1990
Cemented carbide tip
KENNAMETAL INC44 citations92
US4911503AMar 27, 1990
Earth engaging cutter bit
KENNAMETAL INC26 citations92
US4911504AMar 27, 1990
Cutter bit and tip
KENNAMETAL INC33 citations92
US7475949B2Jan 13, 2009
Edge cutter assembly for use with a rotatable drum
KENNAMETAL INC34 citations91
US5143163ASep 1, 1992
Digging tooth
KENNAMETAL INC24 citations88
US6764140B2Jul 20, 2004
Drum mounting plate for cutting tool holder block
KENNAMETAL INC49 citations87
US7547074B2Jun 16, 2009
Overlapping pedestals for supporting a block secured to a rotating drum
KENNAMETAL INC8 citations80
US4817743AApr 4, 1989
Butterfly-type shim having semi-opened bottom and double sandwich braze joint produced therewith
KENNAMETAL INC23 citations78
US4917196AApr 17, 1990
Excavating tooth for an earth auger
KENNAMETAL INC18 citations73
US5067262ANov 26, 1991
Digging tooth
KENNAMETAL INC16 citations72
US7883154B2Feb 8, 2011
Cutting tool with water injection to the cutting bit shank
KENNAMETAL INC5 citations61
US7883153B2Feb 8, 2011
Road milling drum having an adjustable width
KENNAMETAL INC2 citations61