Inventor
DEKEN ARTHUR D
US23 patents
Patents
23 patentsUSRE38418EFeb 10, 2004
Dual member pipe joint for a dual member drill string
CHARLES MACHINE WORKS64 citations96
US6543551B1Apr 8, 2003
Pipe handling device
CHARLES MACHINE WORKS118 citations96
USRE37450ENov 20, 2001
Directional multi-blade boring head
CHARLES MACHINE WORKS54 citations96
US5941322AAug 24, 1999
Directional boring head with blade assembly
CHARLES MACHINE WORKS82 citations96
US5242026ASep 7, 1993
Method of and apparatus for drilling a horizontal controlled borehole in the earth
CHARLES MACHINE WORKS54 citations96
US4422794ADec 27, 1983
Coupling for earth boring units
CHARLES MACHINE WORKS61 citations96
US5361855ANov 8, 1994
Method and casing for excavating a borehole
CHARLES MACHINE WORKS56 citations95
US5212891AMay 25, 1993
Soft excavator
CHARLES MACHINE WORKS71 citations95
US5148880ASep 22, 1992
Apparatus for drilling a horizontal controlled borehole in the earth
CHARLES MACHINE WORKS78 citations95
US6085852AJul 11, 2000
Pipe handling device
CHARLES MACHINE WORKS68 citations94
US5682956ANov 4, 1997
Dual member pipe joint for a dual member drill string
CHARLES MACHINE WORKS49 citations93
US5392868AFeb 28, 1995
Directional multi-blade boring head
CHARLES MACHINE WORKS24 citations93
US5390750AFeb 21, 1995
Downhole compaction and stabilization back reamer and drill bit
CHARLES MACHINE WORKS21 citations93
US5341887AAug 30, 1994
Directional multi-blade boring head
CHARLES MACHINE WORKS20 citations93
US5220964AJun 22, 1993
Downhole compaction and stabilization back reamer and drill bit
CHARLES MACHINE WORKS30 citations93
US6216803B1Apr 17, 2001
Anchor assembly
CHARLES MACHINE WORKS27 citations92
US5799740ASep 1, 1998
Directional boring head with blade assembly
CHARLES MACHINE WORKS37 citations92
US5479728AJan 2, 1996
Apparatus for backfilling and tamping a trench
CHARLES MACHINE WORKS34 citations92
US4963075AOct 16, 1990
Radial diaphragm pump
CHARLES MACHINE WORKS39 citations90
US4475604AOct 9, 1984
Mobile machine for subterranean installation of piping and the like
CHARLES MACHINE WORKS38 citations90
US4981396AJan 1, 1991
Multiple pipe installation backfilling, and compaction attachment
CHARLES MACHINE WORKS50 citations87
USRE37975EFeb 4, 2003
Directional boring head with blade assembly
CHARLES MACHINE WORKS16 citations83
US5267621ADec 7, 1993
Drill pipe breakout device
CHARLES MACHINE WORKS16 citations74